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## Expressions

Every AST node in SQLGlot is represented by a subclass of `Expression`.

This module contains the implementation of all supported `Expression` types. Additionally, it exposes a number of helper functions, which are mainly used to programmatically build SQL expressions, such as `select`.

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       1"""
       2## Expressions
       3
       4Every AST node in SQLGlot is represented by a subclass of `Expression`.
       5
       6This module contains the implementation of all supported `Expression` types. Additionally,
       7it exposes a number of helper functions, which are mainly used to programmatically build
       8SQL expressions, such as `sqlglot.expressions.select`.
       9
      10----
      11"""
      12
      13from __future__ import annotations
      14
      15import datetime
      16import math
      17import numbers
      18import re
      19import typing as t
      20from collections import deque
      21from copy import deepcopy
      22from enum import auto
      23from functools import reduce
      24
      25from sqlglot._typing import E
      26from sqlglot.errors import ParseError
      27from sqlglot.helper import (
      28    AutoName,
      29    camel_to_snake_case,
      30    ensure_collection,
      31    ensure_list,
      32    seq_get,
      33    subclasses,
      34)
      35from sqlglot.tokens import Token
      36
      37if t.TYPE_CHECKING:
      38    from sqlglot.dialects.dialect import DialectType
      39
      40
      41class _Expression(type):
      42    def __new__(cls, clsname, bases, attrs):
      43        klass = super().__new__(cls, clsname, bases, attrs)
      44
      45        # When an Expression class is created, its key is automatically set to be
      46        # the lowercase version of the class' name.
      47        klass.key = clsname.lower()
      48
      49        # This is so that docstrings are not inherited in pdoc
      50        klass.__doc__ = klass.__doc__ or ""
      51
      52        return klass
      53
      54
      55class Expression(metaclass=_Expression):
      56    """
      57    The base class for all expressions in a syntax tree. Each Expression encapsulates any necessary
      58    context, such as its child expressions, their names (arg keys), and whether a given child expression
      59    is optional or not.
      60
      61    Attributes:
      62        key: a unique key for each class in the Expression hierarchy. This is useful for hashing
      63            and representing expressions as strings.
      64        arg_types: determines what arguments (child nodes) are supported by an expression. It
      65            maps arg keys to booleans that indicate whether the corresponding args are optional.
      66        parent: a reference to the parent expression (or None, in case of root expressions).
      67        arg_key: the arg key an expression is associated with, i.e. the name its parent expression
      68            uses to refer to it.
      69        comments: a list of comments that are associated with a given expression. This is used in
      70            order to preserve comments when transpiling SQL code.
      71        type: the `sqlglot.expressions.DataType` type of an expression. This is inferred by the
      72            optimizer, in order to enable some transformations that require type information.
      73        meta: a dictionary that can be used to store useful metadata for a given expression.
      74
      75    Example:
      76        >>> class Foo(Expression):
      77        ...     arg_types = {"this": True, "expression": False}
      78
      79        The above definition informs us that Foo is an Expression that requires an argument called
      80        "this" and may also optionally receive an argument called "expression".
      81
      82    Args:
      83        args: a mapping used for retrieving the arguments of an expression, given their arg keys.
      84    """
      85
      86    key = "expression"
      87    arg_types = {"this": True}
      88    __slots__ = ("args", "parent", "arg_key", "comments", "_type", "_meta", "_hash")
      89
      90    def __init__(self, **args: t.Any):
      91        self.args: t.Dict[str, t.Any] = args
      92        self.parent: t.Optional[Expression] = None
      93        self.arg_key: t.Optional[str] = None
      94        self.comments: t.Optional[t.List[str]] = None
      95        self._type: t.Optional[DataType] = None
      96        self._meta: t.Optional[t.Dict[str, t.Any]] = None
      97        self._hash: t.Optional[int] = None
      98
      99        for arg_key, value in self.args.items():
     100            self._set_parent(arg_key, value)
     101
     102    def __eq__(self, other) -> bool:
     103        return type(self) is type(other) and hash(self) == hash(other)
     104
     105    @property
     106    def hashable_args(self) -> t.Any:
     107        return frozenset(
     108            (k, tuple(_norm_arg(a) for a in v) if type(v) is list else _norm_arg(v))
     109            for k, v in self.args.items()
     110            if not (v is None or v is False or (type(v) is list and not v))
     111        )
     112
     113    def __hash__(self) -> int:
     114        if self._hash is not None:
     115            return self._hash
     116
     117        return hash((self.__class__, self.hashable_args))
     118
     119    @property
     120    def this(self):
     121        """
     122        Retrieves the argument with key "this".
     123        """
     124        return self.args.get("this")
     125
     126    @property
     127    def expression(self):
     128        """
     129        Retrieves the argument with key "expression".
     130        """
     131        return self.args.get("expression")
     132
     133    @property
     134    def expressions(self):
     135        """
     136        Retrieves the argument with key "expressions".
     137        """
     138        return self.args.get("expressions") or []
     139
     140    def text(self, key) -> str:
     141        """
     142        Returns a textual representation of the argument corresponding to "key". This can only be used
     143        for args that are strings or leaf Expression instances, such as identifiers and literals.
     144        """
     145        field = self.args.get(key)
     146        if isinstance(field, str):
     147            return field
     148        if isinstance(field, (Identifier, Literal, Var)):
     149            return field.this
     150        if isinstance(field, (Star, Null)):
     151            return field.name
     152        return ""
     153
     154    @property
     155    def is_string(self) -> bool:
     156        """
     157        Checks whether a Literal expression is a string.
     158        """
     159        return isinstance(self, Literal) and self.args["is_string"]
     160
     161    @property
     162    def is_number(self) -> bool:
     163        """
     164        Checks whether a Literal expression is a number.
     165        """
     166        return isinstance(self, Literal) and not self.args["is_string"]
     167
     168    @property
     169    def is_int(self) -> bool:
     170        """
     171        Checks whether a Literal expression is an integer.
     172        """
     173        if self.is_number:
     174            try:
     175                int(self.name)
     176                return True
     177            except ValueError:
     178                pass
     179        return False
     180
     181    @property
     182    def is_star(self) -> bool:
     183        """Checks whether an expression is a star."""
     184        return isinstance(self, Star) or (isinstance(self, Column) and isinstance(self.this, Star))
     185
     186    @property
     187    def alias(self) -> str:
     188        """
     189        Returns the alias of the expression, or an empty string if it's not aliased.
     190        """
     191        if isinstance(self.args.get("alias"), TableAlias):
     192            return self.args["alias"].name
     193        return self.text("alias")
     194
     195    @property
     196    def alias_column_names(self) -> t.List[str]:
     197        table_alias = self.args.get("alias")
     198        if not table_alias:
     199            return []
     200        return [c.name for c in table_alias.args.get("columns") or []]
     201
     202    @property
     203    def name(self) -> str:
     204        return self.text("this")
     205
     206    @property
     207    def alias_or_name(self) -> str:
     208        return self.alias or self.name
     209
     210    @property
     211    def output_name(self) -> str:
     212        """
     213        Name of the output column if this expression is a selection.
     214
     215        If the Expression has no output name, an empty string is returned.
     216
     217        Example:
     218            >>> from sqlglot import parse_one
     219            >>> parse_one("SELECT a").expressions[0].output_name
     220            'a'
     221            >>> parse_one("SELECT b AS c").expressions[0].output_name
     222            'c'
     223            >>> parse_one("SELECT 1 + 2").expressions[0].output_name
     224            ''
     225        """
     226        return ""
     227
     228    @property
     229    def type(self) -> t.Optional[DataType]:
     230        return self._type
     231
     232    @type.setter
     233    def type(self, dtype: t.Optional[DataType | DataType.Type | str]) -> None:
     234        if dtype and not isinstance(dtype, DataType):
     235            dtype = DataType.build(dtype)
     236        self._type = dtype  # type: ignore
     237
     238    @property
     239    def meta(self) -> t.Dict[str, t.Any]:
     240        if self._meta is None:
     241            self._meta = {}
     242        return self._meta
     243
     244    def __deepcopy__(self, memo):
     245        copy = self.__class__(**deepcopy(self.args))
     246        if self.comments is not None:
     247            copy.comments = deepcopy(self.comments)
     248
     249        if self._type is not None:
     250            copy._type = self._type.copy()
     251
     252        if self._meta is not None:
     253            copy._meta = deepcopy(self._meta)
     254
     255        return copy
     256
     257    def copy(self):
     258        """
     259        Returns a deep copy of the expression.
     260        """
     261        new = deepcopy(self)
     262        new.parent = self.parent
     263        return new
     264
     265    def add_comments(self, comments: t.Optional[t.List[str]]) -> None:
     266        if self.comments is None:
     267            self.comments = []
     268        if comments:
     269            self.comments.extend(comments)
     270
     271    def append(self, arg_key: str, value: t.Any) -> None:
     272        """
     273        Appends value to arg_key if it's a list or sets it as a new list.
     274
     275        Args:
     276            arg_key (str): name of the list expression arg
     277            value (Any): value to append to the list
     278        """
     279        if not isinstance(self.args.get(arg_key), list):
     280            self.args[arg_key] = []
     281        self.args[arg_key].append(value)
     282        self._set_parent(arg_key, value)
     283
     284    def set(self, arg_key: str, value: t.Any) -> None:
     285        """
     286        Sets arg_key to value.
     287
     288        Args:
     289            arg_key: name of the expression arg.
     290            value: value to set the arg to.
     291        """
     292        if value is None:
     293            self.args.pop(arg_key, None)
     294            return
     295
     296        self.args[arg_key] = value
     297        self._set_parent(arg_key, value)
     298
     299    def _set_parent(self, arg_key: str, value: t.Any) -> None:
     300        if hasattr(value, "parent"):
     301            value.parent = self
     302            value.arg_key = arg_key
     303        elif type(value) is list:
     304            for v in value:
     305                if hasattr(v, "parent"):
     306                    v.parent = self
     307                    v.arg_key = arg_key
     308
     309    @property
     310    def depth(self) -> int:
     311        """
     312        Returns the depth of this tree.
     313        """
     314        if self.parent:
     315            return self.parent.depth + 1
     316        return 0
     317
     318    def iter_expressions(self) -> t.Iterator[t.Tuple[str, Expression]]:
     319        """Yields the key and expression for all arguments, exploding list args."""
     320        for k, vs in self.args.items():
     321            if type(vs) is list:
     322                for v in vs:
     323                    if hasattr(v, "parent"):
     324                        yield k, v
     325            else:
     326                if hasattr(vs, "parent"):
     327                    yield k, vs
     328
     329    def find(self, *expression_types: t.Type[E], bfs: bool = True) -> t.Optional[E]:
     330        """
     331        Returns the first node in this tree which matches at least one of
     332        the specified types.
     333
     334        Args:
     335            expression_types: the expression type(s) to match.
     336            bfs: whether to search the AST using the BFS algorithm (DFS is used if false).
     337
     338        Returns:
     339            The node which matches the criteria or None if no such node was found.
     340        """
     341        return next(self.find_all(*expression_types, bfs=bfs), None)
     342
     343    def find_all(self, *expression_types: t.Type[E], bfs: bool = True) -> t.Iterator[E]:
     344        """
     345        Returns a generator object which visits all nodes in this tree and only
     346        yields those that match at least one of the specified expression types.
     347
     348        Args:
     349            expression_types: the expression type(s) to match.
     350            bfs: whether to search the AST using the BFS algorithm (DFS is used if false).
     351
     352        Returns:
     353            The generator object.
     354        """
     355        for expression, *_ in self.walk(bfs=bfs):
     356            if isinstance(expression, expression_types):
     357                yield expression
     358
     359    def find_ancestor(self, *expression_types: t.Type[E]) -> t.Optional[E]:
     360        """
     361        Returns a nearest parent matching expression_types.
     362
     363        Args:
     364            expression_types: the expression type(s) to match.
     365
     366        Returns:
     367            The parent node.
     368        """
     369        ancestor = self.parent
     370        while ancestor and not isinstance(ancestor, expression_types):
     371            ancestor = ancestor.parent
     372        return t.cast(E, ancestor)
     373
     374    @property
     375    def parent_select(self) -> t.Optional[Select]:
     376        """
     377        Returns the parent select statement.
     378        """
     379        return self.find_ancestor(Select)
     380
     381    @property
     382    def same_parent(self) -> bool:
     383        """Returns if the parent is the same class as itself."""
     384        return type(self.parent) is self.__class__
     385
     386    def root(self) -> Expression:
     387        """
     388        Returns the root expression of this tree.
     389        """
     390        expression = self
     391        while expression.parent:
     392            expression = expression.parent
     393        return expression
     394
     395    def walk(self, bfs=True, prune=None):
     396        """
     397        Returns a generator object which visits all nodes in this tree.
     398
     399        Args:
     400            bfs (bool): if set to True the BFS traversal order will be applied,
     401                otherwise the DFS traversal will be used instead.
     402            prune ((node, parent, arg_key) -> bool): callable that returns True if
     403                the generator should stop traversing this branch of the tree.
     404
     405        Returns:
     406            the generator object.
     407        """
     408        if bfs:
     409            yield from self.bfs(prune=prune)
     410        else:
     411            yield from self.dfs(prune=prune)
     412
     413    def dfs(self, parent=None, key=None, prune=None):
     414        """
     415        Returns a generator object which visits all nodes in this tree in
     416        the DFS (Depth-first) order.
     417
     418        Returns:
     419            The generator object.
     420        """
     421        parent = parent or self.parent
     422        yield self, parent, key
     423        if prune and prune(self, parent, key):
     424            return
     425
     426        for k, v in self.iter_expressions():
     427            yield from v.dfs(self, k, prune)
     428
     429    def bfs(self, prune=None):
     430        """
     431        Returns a generator object which visits all nodes in this tree in
     432        the BFS (Breadth-first) order.
     433
     434        Returns:
     435            The generator object.
     436        """
     437        queue = deque([(self, self.parent, None)])
     438
     439        while queue:
     440            item, parent, key = queue.popleft()
     441
     442            yield item, parent, key
     443            if prune and prune(item, parent, key):
     444                continue
     445
     446            for k, v in item.iter_expressions():
     447                queue.append((v, item, k))
     448
     449    def unnest(self):
     450        """
     451        Returns the first non parenthesis child or self.
     452        """
     453        expression = self
     454        while type(expression) is Paren:
     455            expression = expression.this
     456        return expression
     457
     458    def unalias(self):
     459        """
     460        Returns the inner expression if this is an Alias.
     461        """
     462        if isinstance(self, Alias):
     463            return self.this
     464        return self
     465
     466    def unnest_operands(self):
     467        """
     468        Returns unnested operands as a tuple.
     469        """
     470        return tuple(arg.unnest() for _, arg in self.iter_expressions())
     471
     472    def flatten(self, unnest=True):
     473        """
     474        Returns a generator which yields child nodes who's parents are the same class.
     475
     476        A AND B AND C -> [A, B, C]
     477        """
     478        for node, _, _ in self.dfs(prune=lambda n, p, *_: p and not type(n) is self.__class__):
     479            if not type(node) is self.__class__:
     480                yield node.unnest() if unnest else node
     481
     482    def __str__(self) -> str:
     483        return self.sql()
     484
     485    def __repr__(self) -> str:
     486        return self._to_s()
     487
     488    def sql(self, dialect: DialectType = None, **opts) -> str:
     489        """
     490        Returns SQL string representation of this tree.
     491
     492        Args:
     493            dialect: the dialect of the output SQL string (eg. "spark", "hive", "presto", "mysql").
     494            opts: other `sqlglot.generator.Generator` options.
     495
     496        Returns:
     497            The SQL string.
     498        """
     499        from sqlglot.dialects import Dialect
     500
     501        return Dialect.get_or_raise(dialect)().generate(self, **opts)
     502
     503    def _to_s(self, hide_missing: bool = True, level: int = 0) -> str:
     504        indent = "" if not level else "\n"
     505        indent += "".join(["  "] * level)
     506        left = f"({self.key.upper()} "
     507
     508        args: t.Dict[str, t.Any] = {
     509            k: ", ".join(
     510                v._to_s(hide_missing=hide_missing, level=level + 1)
     511                if hasattr(v, "_to_s")
     512                else str(v)
     513                for v in ensure_list(vs)
     514                if v is not None
     515            )
     516            for k, vs in self.args.items()
     517        }
     518        args["comments"] = self.comments
     519        args["type"] = self.type
     520        args = {k: v for k, v in args.items() if v or not hide_missing}
     521
     522        right = ", ".join(f"{k}: {v}" for k, v in args.items())
     523        right += ")"
     524
     525        return indent + left + right
     526
     527    def transform(self, fun, *args, copy=True, **kwargs):
     528        """
     529        Recursively visits all tree nodes (excluding already transformed ones)
     530        and applies the given transformation function to each node.
     531
     532        Args:
     533            fun (function): a function which takes a node as an argument and returns a
     534                new transformed node or the same node without modifications. If the function
     535                returns None, then the corresponding node will be removed from the syntax tree.
     536            copy (bool): if set to True a new tree instance is constructed, otherwise the tree is
     537                modified in place.
     538
     539        Returns:
     540            The transformed tree.
     541        """
     542        node = self.copy() if copy else self
     543        new_node = fun(node, *args, **kwargs)
     544
     545        if new_node is None or not isinstance(new_node, Expression):
     546            return new_node
     547        if new_node is not node:
     548            new_node.parent = node.parent
     549            return new_node
     550
     551        replace_children(new_node, lambda child: child.transform(fun, *args, copy=False, **kwargs))
     552        return new_node
     553
     554    @t.overload
     555    def replace(self, expression: E) -> E:
     556        ...
     557
     558    @t.overload
     559    def replace(self, expression: None) -> None:
     560        ...
     561
     562    def replace(self, expression):
     563        """
     564        Swap out this expression with a new expression.
     565
     566        For example::
     567
     568            >>> tree = Select().select("x").from_("tbl")
     569            >>> tree.find(Column).replace(Column(this="y"))
     570            (COLUMN this: y)
     571            >>> tree.sql()
     572            'SELECT y FROM tbl'
     573
     574        Args:
     575            expression: new node
     576
     577        Returns:
     578            The new expression or expressions.
     579        """
     580        if not self.parent:
     581            return expression
     582
     583        parent = self.parent
     584        self.parent = None
     585
     586        replace_children(parent, lambda child: expression if child is self else child)
     587        return expression
     588
     589    def pop(self: E) -> E:
     590        """
     591        Remove this expression from its AST.
     592
     593        Returns:
     594            The popped expression.
     595        """
     596        self.replace(None)
     597        return self
     598
     599    def assert_is(self, type_: t.Type[E]) -> E:
     600        """
     601        Assert that this `Expression` is an instance of `type_`.
     602
     603        If it is NOT an instance of `type_`, this raises an assertion error.
     604        Otherwise, this returns this expression.
     605
     606        Examples:
     607            This is useful for type security in chained expressions:
     608
     609            >>> import sqlglot
     610            >>> sqlglot.parse_one("SELECT x from y").assert_is(Select).select("z").sql()
     611            'SELECT x, z FROM y'
     612        """
     613        assert isinstance(self, type_)
     614        return self
     615
     616    def error_messages(self, args: t.Optional[t.Sequence] = None) -> t.List[str]:
     617        """
     618        Checks if this expression is valid (e.g. all mandatory args are set).
     619
     620        Args:
     621            args: a sequence of values that were used to instantiate a Func expression. This is used
     622                to check that the provided arguments don't exceed the function argument limit.
     623
     624        Returns:
     625            A list of error messages for all possible errors that were found.
     626        """
     627        errors: t.List[str] = []
     628
     629        for k in self.args:
     630            if k not in self.arg_types:
     631                errors.append(f"Unexpected keyword: '{k}' for {self.__class__}")
     632        for k, mandatory in self.arg_types.items():
     633            v = self.args.get(k)
     634            if mandatory and (v is None or (isinstance(v, list) and not v)):
     635                errors.append(f"Required keyword: '{k}' missing for {self.__class__}")
     636
     637        if (
     638            args
     639            and isinstance(self, Func)
     640            and len(args) > len(self.arg_types)
     641            and not self.is_var_len_args
     642        ):
     643            errors.append(
     644                f"The number of provided arguments ({len(args)}) is greater than "
     645                f"the maximum number of supported arguments ({len(self.arg_types)})"
     646            )
     647
     648        return errors
     649
     650    def dump(self):
     651        """
     652        Dump this Expression to a JSON-serializable dict.
     653        """
     654        from sqlglot.serde import dump
     655
     656        return dump(self)
     657
     658    @classmethod
     659    def load(cls, obj):
     660        """
     661        Load a dict (as returned by `Expression.dump`) into an Expression instance.
     662        """
     663        from sqlglot.serde import load
     664
     665        return load(obj)
     666
     667
     668IntoType = t.Union[
     669    str,
     670    t.Type[Expression],
     671    t.Collection[t.Union[str, t.Type[Expression]]],
     672]
     673ExpOrStr = t.Union[str, Expression]
     674
     675
     676class Condition(Expression):
     677    def and_(
     678        self,
     679        *expressions: t.Optional[ExpOrStr],
     680        dialect: DialectType = None,
     681        copy: bool = True,
     682        **opts,
     683    ) -> Condition:
     684        """
     685        AND this condition with one or multiple expressions.
     686
     687        Example:
     688            >>> condition("x=1").and_("y=1").sql()
     689            'x = 1 AND y = 1'
     690
     691        Args:
     692            *expressions: the SQL code strings to parse.
     693                If an `Expression` instance is passed, it will be used as-is.
     694            dialect: the dialect used to parse the input expression.
     695            copy: whether or not to copy the involved expressions (only applies to Expressions).
     696            opts: other options to use to parse the input expressions.
     697
     698        Returns:
     699            The new And condition.
     700        """
     701        return and_(self, *expressions, dialect=dialect, copy=copy, **opts)
     702
     703    def or_(
     704        self,
     705        *expressions: t.Optional[ExpOrStr],
     706        dialect: DialectType = None,
     707        copy: bool = True,
     708        **opts,
     709    ) -> Condition:
     710        """
     711        OR this condition with one or multiple expressions.
     712
     713        Example:
     714            >>> condition("x=1").or_("y=1").sql()
     715            'x = 1 OR y = 1'
     716
     717        Args:
     718            *expressions: the SQL code strings to parse.
     719                If an `Expression` instance is passed, it will be used as-is.
     720            dialect: the dialect used to parse the input expression.
     721            copy: whether or not to copy the involved expressions (only applies to Expressions).
     722            opts: other options to use to parse the input expressions.
     723
     724        Returns:
     725            The new Or condition.
     726        """
     727        return or_(self, *expressions, dialect=dialect, copy=copy, **opts)
     728
     729    def not_(self, copy: bool = True):
     730        """
     731        Wrap this condition with NOT.
     732
     733        Example:
     734            >>> condition("x=1").not_().sql()
     735            'NOT x = 1'
     736
     737        Args:
     738            copy: whether or not to copy this object.
     739
     740        Returns:
     741            The new Not instance.
     742        """
     743        return not_(self, copy=copy)
     744
     745    def as_(
     746        self,
     747        alias: str | Identifier,
     748        quoted: t.Optional[bool] = None,
     749        dialect: DialectType = None,
     750        copy: bool = True,
     751        **opts,
     752    ) -> Alias:
     753        return alias_(self, alias, quoted=quoted, dialect=dialect, copy=copy, **opts)
     754
     755    def _binop(self, klass: t.Type[E], other: t.Any, reverse: bool = False) -> E:
     756        this = self.copy()
     757        other = convert(other, copy=True)
     758        if not isinstance(this, klass) and not isinstance(other, klass):
     759            this = _wrap(this, Binary)
     760            other = _wrap(other, Binary)
     761        if reverse:
     762            return klass(this=other, expression=this)
     763        return klass(this=this, expression=other)
     764
     765    def __getitem__(self, other: ExpOrStr | t.Tuple[ExpOrStr]):
     766        return Bracket(
     767            this=self.copy(), expressions=[convert(e, copy=True) for e in ensure_list(other)]
     768        )
     769
     770    def isin(
     771        self,
     772        *expressions: t.Any,
     773        query: t.Optional[ExpOrStr] = None,
     774        unnest: t.Optional[ExpOrStr] | t.Collection[ExpOrStr] = None,
     775        copy: bool = True,
     776        **opts,
     777    ) -> In:
     778        return In(
     779            this=maybe_copy(self, copy),
     780            expressions=[convert(e, copy=copy) for e in expressions],
     781            query=maybe_parse(query, copy=copy, **opts) if query else None,
     782            unnest=Unnest(
     783                expressions=[
     784                    maybe_parse(t.cast(ExpOrStr, e), copy=copy, **opts) for e in ensure_list(unnest)
     785                ]
     786            )
     787            if unnest
     788            else None,
     789        )
     790
     791    def between(self, low: t.Any, high: t.Any, copy: bool = True, **opts) -> Between:
     792        return Between(
     793            this=maybe_copy(self, copy),
     794            low=convert(low, copy=copy, **opts),
     795            high=convert(high, copy=copy, **opts),
     796        )
     797
     798    def is_(self, other: ExpOrStr) -> Is:
     799        return self._binop(Is, other)
     800
     801    def like(self, other: ExpOrStr) -> Like:
     802        return self._binop(Like, other)
     803
     804    def ilike(self, other: ExpOrStr) -> ILike:
     805        return self._binop(ILike, other)
     806
     807    def eq(self, other: t.Any) -> EQ:
     808        return self._binop(EQ, other)
     809
     810    def neq(self, other: t.Any) -> NEQ:
     811        return self._binop(NEQ, other)
     812
     813    def rlike(self, other: ExpOrStr) -> RegexpLike:
     814        return self._binop(RegexpLike, other)
     815
     816    def __lt__(self, other: t.Any) -> LT:
     817        return self._binop(LT, other)
     818
     819    def __le__(self, other: t.Any) -> LTE:
     820        return self._binop(LTE, other)
     821
     822    def __gt__(self, other: t.Any) -> GT:
     823        return self._binop(GT, other)
     824
     825    def __ge__(self, other: t.Any) -> GTE:
     826        return self._binop(GTE, other)
     827
     828    def __add__(self, other: t.Any) -> Add:
     829        return self._binop(Add, other)
     830
     831    def __radd__(self, other: t.Any) -> Add:
     832        return self._binop(Add, other, reverse=True)
     833
     834    def __sub__(self, other: t.Any) -> Sub:
     835        return self._binop(Sub, other)
     836
     837    def __rsub__(self, other: t.Any) -> Sub:
     838        return self._binop(Sub, other, reverse=True)
     839
     840    def __mul__(self, other: t.Any) -> Mul:
     841        return self._binop(Mul, other)
     842
     843    def __rmul__(self, other: t.Any) -> Mul:
     844        return self._binop(Mul, other, reverse=True)
     845
     846    def __truediv__(self, other: t.Any) -> Div:
     847        return self._binop(Div, other)
     848
     849    def __rtruediv__(self, other: t.Any) -> Div:
     850        return self._binop(Div, other, reverse=True)
     851
     852    def __floordiv__(self, other: t.Any) -> IntDiv:
     853        return self._binop(IntDiv, other)
     854
     855    def __rfloordiv__(self, other: t.Any) -> IntDiv:
     856        return self._binop(IntDiv, other, reverse=True)
     857
     858    def __mod__(self, other: t.Any) -> Mod:
     859        return self._binop(Mod, other)
     860
     861    def __rmod__(self, other: t.Any) -> Mod:
     862        return self._binop(Mod, other, reverse=True)
     863
     864    def __pow__(self, other: t.Any) -> Pow:
     865        return self._binop(Pow, other)
     866
     867    def __rpow__(self, other: t.Any) -> Pow:
     868        return self._binop(Pow, other, reverse=True)
     869
     870    def __and__(self, other: t.Any) -> And:
     871        return self._binop(And, other)
     872
     873    def __rand__(self, other: t.Any) -> And:
     874        return self._binop(And, other, reverse=True)
     875
     876    def __or__(self, other: t.Any) -> Or:
     877        return self._binop(Or, other)
     878
     879    def __ror__(self, other: t.Any) -> Or:
     880        return self._binop(Or, other, reverse=True)
     881
     882    def __neg__(self) -> Neg:
     883        return Neg(this=_wrap(self.copy(), Binary))
     884
     885    def __invert__(self) -> Not:
     886        return not_(self.copy())
     887
     888
     889class Predicate(Condition):
     890    """Relationships like x = y, x > 1, x >= y."""
     891
     892
     893class DerivedTable(Expression):
     894    @property
     895    def selects(self) -> t.List[Expression]:
     896        return self.this.selects if isinstance(self.this, Subqueryable) else []
     897
     898    @property
     899    def named_selects(self) -> t.List[str]:
     900        return [select.output_name for select in self.selects]
     901
     902
     903class Unionable(Expression):
     904    def union(
     905        self, expression: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
     906    ) -> Unionable:
     907        """
     908        Builds a UNION expression.
     909
     910        Example:
     911            >>> import sqlglot
     912            >>> sqlglot.parse_one("SELECT * FROM foo").union("SELECT * FROM bla").sql()
     913            'SELECT * FROM foo UNION SELECT * FROM bla'
     914
     915        Args:
     916            expression: the SQL code string.
     917                If an `Expression` instance is passed, it will be used as-is.
     918            distinct: set the DISTINCT flag if and only if this is true.
     919            dialect: the dialect used to parse the input expression.
     920            opts: other options to use to parse the input expressions.
     921
     922        Returns:
     923            The new Union expression.
     924        """
     925        return union(left=self, right=expression, distinct=distinct, dialect=dialect, **opts)
     926
     927    def intersect(
     928        self, expression: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
     929    ) -> Unionable:
     930        """
     931        Builds an INTERSECT expression.
     932
     933        Example:
     934            >>> import sqlglot
     935            >>> sqlglot.parse_one("SELECT * FROM foo").intersect("SELECT * FROM bla").sql()
     936            'SELECT * FROM foo INTERSECT SELECT * FROM bla'
     937
     938        Args:
     939            expression: the SQL code string.
     940                If an `Expression` instance is passed, it will be used as-is.
     941            distinct: set the DISTINCT flag if and only if this is true.
     942            dialect: the dialect used to parse the input expression.
     943            opts: other options to use to parse the input expressions.
     944
     945        Returns:
     946            The new Intersect expression.
     947        """
     948        return intersect(left=self, right=expression, distinct=distinct, dialect=dialect, **opts)
     949
     950    def except_(
     951        self, expression: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
     952    ) -> Unionable:
     953        """
     954        Builds an EXCEPT expression.
     955
     956        Example:
     957            >>> import sqlglot
     958            >>> sqlglot.parse_one("SELECT * FROM foo").except_("SELECT * FROM bla").sql()
     959            'SELECT * FROM foo EXCEPT SELECT * FROM bla'
     960
     961        Args:
     962            expression: the SQL code string.
     963                If an `Expression` instance is passed, it will be used as-is.
     964            distinct: set the DISTINCT flag if and only if this is true.
     965            dialect: the dialect used to parse the input expression.
     966            opts: other options to use to parse the input expressions.
     967
     968        Returns:
     969            The new Except expression.
     970        """
     971        return except_(left=self, right=expression, distinct=distinct, dialect=dialect, **opts)
     972
     973
     974class UDTF(DerivedTable, Unionable):
     975    @property
     976    def selects(self) -> t.List[Expression]:
     977        alias = self.args.get("alias")
     978        return alias.columns if alias else []
     979
     980
     981class Cache(Expression):
     982    arg_types = {
     983        "with": False,
     984        "this": True,
     985        "lazy": False,
     986        "options": False,
     987        "expression": False,
     988    }
     989
     990
     991class Uncache(Expression):
     992    arg_types = {"this": True, "exists": False}
     993
     994
     995class DDL(Expression):
     996    @property
     997    def ctes(self):
     998        with_ = self.args.get("with")
     999        if not with_:
    1000            return []
    1001        return with_.expressions
    1002
    1003    @property
    1004    def named_selects(self) -> t.List[str]:
    1005        if isinstance(self.expression, Subqueryable):
    1006            return self.expression.named_selects
    1007        return []
    1008
    1009    @property
    1010    def selects(self) -> t.List[Expression]:
    1011        if isinstance(self.expression, Subqueryable):
    1012            return self.expression.selects
    1013        return []
    1014
    1015
    1016class Create(DDL):
    1017    arg_types = {
    1018        "with": False,
    1019        "this": True,
    1020        "kind": True,
    1021        "expression": False,
    1022        "exists": False,
    1023        "properties": False,
    1024        "replace": False,
    1025        "unique": False,
    1026        "indexes": False,
    1027        "no_schema_binding": False,
    1028        "begin": False,
    1029        "clone": False,
    1030    }
    1031
    1032
    1033# https://docs.snowflake.com/en/sql-reference/sql/create-clone
    1034class Clone(Expression):
    1035    arg_types = {
    1036        "this": True,
    1037        "when": False,
    1038        "kind": False,
    1039        "shallow": False,
    1040        "expression": False,
    1041    }
    1042
    1043
    1044class Describe(Expression):
    1045    arg_types = {"this": True, "kind": False, "expressions": False}
    1046
    1047
    1048class Pragma(Expression):
    1049    pass
    1050
    1051
    1052class Set(Expression):
    1053    arg_types = {"expressions": False, "unset": False, "tag": False}
    1054
    1055
    1056class SetItem(Expression):
    1057    arg_types = {
    1058        "this": False,
    1059        "expressions": False,
    1060        "kind": False,
    1061        "collate": False,  # MySQL SET NAMES statement
    1062        "global": False,
    1063    }
    1064
    1065
    1066class Show(Expression):
    1067    arg_types = {
    1068        "this": True,
    1069        "target": False,
    1070        "offset": False,
    1071        "limit": False,
    1072        "like": False,
    1073        "where": False,
    1074        "db": False,
    1075        "scope": False,
    1076        "scope_kind": False,
    1077        "full": False,
    1078        "mutex": False,
    1079        "query": False,
    1080        "channel": False,
    1081        "global": False,
    1082        "log": False,
    1083        "position": False,
    1084        "types": False,
    1085    }
    1086
    1087
    1088class UserDefinedFunction(Expression):
    1089    arg_types = {"this": True, "expressions": False, "wrapped": False}
    1090
    1091
    1092class CharacterSet(Expression):
    1093    arg_types = {"this": True, "default": False}
    1094
    1095
    1096class With(Expression):
    1097    arg_types = {"expressions": True, "recursive": False}
    1098
    1099    @property
    1100    def recursive(self) -> bool:
    1101        return bool(self.args.get("recursive"))
    1102
    1103
    1104class WithinGroup(Expression):
    1105    arg_types = {"this": True, "expression": False}
    1106
    1107
    1108class CTE(DerivedTable):
    1109    arg_types = {"this": True, "alias": True}
    1110
    1111
    1112class TableAlias(Expression):
    1113    arg_types = {"this": False, "columns": False}
    1114
    1115    @property
    1116    def columns(self):
    1117        return self.args.get("columns") or []
    1118
    1119
    1120class BitString(Condition):
    1121    pass
    1122
    1123
    1124class HexString(Condition):
    1125    pass
    1126
    1127
    1128class ByteString(Condition):
    1129    pass
    1130
    1131
    1132class RawString(Condition):
    1133    pass
    1134
    1135
    1136class Column(Condition):
    1137    arg_types = {"this": True, "table": False, "db": False, "catalog": False, "join_mark": False}
    1138
    1139    @property
    1140    def table(self) -> str:
    1141        return self.text("table")
    1142
    1143    @property
    1144    def db(self) -> str:
    1145        return self.text("db")
    1146
    1147    @property
    1148    def catalog(self) -> str:
    1149        return self.text("catalog")
    1150
    1151    @property
    1152    def output_name(self) -> str:
    1153        return self.name
    1154
    1155    @property
    1156    def parts(self) -> t.List[Identifier]:
    1157        """Return the parts of a column in order catalog, db, table, name."""
    1158        return [
    1159            t.cast(Identifier, self.args[part])
    1160            for part in ("catalog", "db", "table", "this")
    1161            if self.args.get(part)
    1162        ]
    1163
    1164    def to_dot(self) -> Dot:
    1165        """Converts the column into a dot expression."""
    1166        parts = self.parts
    1167        parent = self.parent
    1168
    1169        while parent:
    1170            if isinstance(parent, Dot):
    1171                parts.append(parent.expression)
    1172            parent = parent.parent
    1173
    1174        return Dot.build(deepcopy(parts))
    1175
    1176
    1177class ColumnPosition(Expression):
    1178    arg_types = {"this": False, "position": True}
    1179
    1180
    1181class ColumnDef(Expression):
    1182    arg_types = {
    1183        "this": True,
    1184        "kind": False,
    1185        "constraints": False,
    1186        "exists": False,
    1187        "position": False,
    1188    }
    1189
    1190    @property
    1191    def constraints(self) -> t.List[ColumnConstraint]:
    1192        return self.args.get("constraints") or []
    1193
    1194
    1195class AlterColumn(Expression):
    1196    arg_types = {
    1197        "this": True,
    1198        "dtype": False,
    1199        "collate": False,
    1200        "using": False,
    1201        "default": False,
    1202        "drop": False,
    1203    }
    1204
    1205
    1206class RenameTable(Expression):
    1207    pass
    1208
    1209
    1210class Comment(Expression):
    1211    arg_types = {"this": True, "kind": True, "expression": True, "exists": False}
    1212
    1213
    1214class Comprehension(Expression):
    1215    arg_types = {"this": True, "expression": True, "iterator": True, "condition": False}
    1216
    1217
    1218# https://clickhouse.com/docs/en/engines/table-engines/mergetree-family/mergetree#mergetree-table-ttl
    1219class MergeTreeTTLAction(Expression):
    1220    arg_types = {
    1221        "this": True,
    1222        "delete": False,
    1223        "recompress": False,
    1224        "to_disk": False,
    1225        "to_volume": False,
    1226    }
    1227
    1228
    1229# https://clickhouse.com/docs/en/engines/table-engines/mergetree-family/mergetree#mergetree-table-ttl
    1230class MergeTreeTTL(Expression):
    1231    arg_types = {
    1232        "expressions": True,
    1233        "where": False,
    1234        "group": False,
    1235        "aggregates": False,
    1236    }
    1237
    1238
    1239# https://dev.mysql.com/doc/refman/8.0/en/create-table.html
    1240class IndexConstraintOption(Expression):
    1241    arg_types = {
    1242        "key_block_size": False,
    1243        "using": False,
    1244        "parser": False,
    1245        "comment": False,
    1246        "visible": False,
    1247        "engine_attr": False,
    1248        "secondary_engine_attr": False,
    1249    }
    1250
    1251
    1252class ColumnConstraint(Expression):
    1253    arg_types = {"this": False, "kind": True}
    1254
    1255    @property
    1256    def kind(self) -> ColumnConstraintKind:
    1257        return self.args["kind"]
    1258
    1259
    1260class ColumnConstraintKind(Expression):
    1261    pass
    1262
    1263
    1264class AutoIncrementColumnConstraint(ColumnConstraintKind):
    1265    pass
    1266
    1267
    1268class CaseSpecificColumnConstraint(ColumnConstraintKind):
    1269    arg_types = {"not_": True}
    1270
    1271
    1272class CharacterSetColumnConstraint(ColumnConstraintKind):
    1273    arg_types = {"this": True}
    1274
    1275
    1276class CheckColumnConstraint(ColumnConstraintKind):
    1277    pass
    1278
    1279
    1280class ClusteredColumnConstraint(ColumnConstraintKind):
    1281    pass
    1282
    1283
    1284class CollateColumnConstraint(ColumnConstraintKind):
    1285    pass
    1286
    1287
    1288class CommentColumnConstraint(ColumnConstraintKind):
    1289    pass
    1290
    1291
    1292class CompressColumnConstraint(ColumnConstraintKind):
    1293    pass
    1294
    1295
    1296class DateFormatColumnConstraint(ColumnConstraintKind):
    1297    arg_types = {"this": True}
    1298
    1299
    1300class DefaultColumnConstraint(ColumnConstraintKind):
    1301    pass
    1302
    1303
    1304class EncodeColumnConstraint(ColumnConstraintKind):
    1305    pass
    1306
    1307
    1308class GeneratedAsIdentityColumnConstraint(ColumnConstraintKind):
    1309    # this: True -> ALWAYS, this: False -> BY DEFAULT
    1310    arg_types = {
    1311        "this": False,
    1312        "expression": False,
    1313        "on_null": False,
    1314        "start": False,
    1315        "increment": False,
    1316        "minvalue": False,
    1317        "maxvalue": False,
    1318        "cycle": False,
    1319    }
    1320
    1321
    1322# https://dev.mysql.com/doc/refman/8.0/en/create-table.html
    1323class IndexColumnConstraint(ColumnConstraintKind):
    1324    arg_types = {
    1325        "this": False,
    1326        "schema": True,
    1327        "kind": False,
    1328        "index_type": False,
    1329        "options": False,
    1330    }
    1331
    1332
    1333class InlineLengthColumnConstraint(ColumnConstraintKind):
    1334    pass
    1335
    1336
    1337class NonClusteredColumnConstraint(ColumnConstraintKind):
    1338    pass
    1339
    1340
    1341class NotForReplicationColumnConstraint(ColumnConstraintKind):
    1342    arg_types = {}
    1343
    1344
    1345class NotNullColumnConstraint(ColumnConstraintKind):
    1346    arg_types = {"allow_null": False}
    1347
    1348
    1349# https://dev.mysql.com/doc/refman/5.7/en/timestamp-initialization.html
    1350class OnUpdateColumnConstraint(ColumnConstraintKind):
    1351    pass
    1352
    1353
    1354class PrimaryKeyColumnConstraint(ColumnConstraintKind):
    1355    arg_types = {"desc": False}
    1356
    1357
    1358class TitleColumnConstraint(ColumnConstraintKind):
    1359    pass
    1360
    1361
    1362class UniqueColumnConstraint(ColumnConstraintKind):
    1363    arg_types = {"this": False, "index_type": False}
    1364
    1365
    1366class UppercaseColumnConstraint(ColumnConstraintKind):
    1367    arg_types: t.Dict[str, t.Any] = {}
    1368
    1369
    1370class PathColumnConstraint(ColumnConstraintKind):
    1371    pass
    1372
    1373
    1374# computed column expression
    1375# https://learn.microsoft.com/en-us/sql/t-sql/statements/create-table-transact-sql?view=sql-server-ver16
    1376class ComputedColumnConstraint(ColumnConstraintKind):
    1377    arg_types = {"this": True, "persisted": False, "not_null": False}
    1378
    1379
    1380class Constraint(Expression):
    1381    arg_types = {"this": True, "expressions": True}
    1382
    1383
    1384class Delete(Expression):
    1385    arg_types = {
    1386        "with": False,
    1387        "this": False,
    1388        "using": False,
    1389        "where": False,
    1390        "returning": False,
    1391        "limit": False,
    1392        "tables": False,  # Multiple-Table Syntax (MySQL)
    1393    }
    1394
    1395    def delete(
    1396        self,
    1397        table: ExpOrStr,
    1398        dialect: DialectType = None,
    1399        copy: bool = True,
    1400        **opts,
    1401    ) -> Delete:
    1402        """
    1403        Create a DELETE expression or replace the table on an existing DELETE expression.
    1404
    1405        Example:
    1406            >>> delete("tbl").sql()
    1407            'DELETE FROM tbl'
    1408
    1409        Args:
    1410            table: the table from which to delete.
    1411            dialect: the dialect used to parse the input expression.
    1412            copy: if `False`, modify this expression instance in-place.
    1413            opts: other options to use to parse the input expressions.
    1414
    1415        Returns:
    1416            Delete: the modified expression.
    1417        """
    1418        return _apply_builder(
    1419            expression=table,
    1420            instance=self,
    1421            arg="this",
    1422            dialect=dialect,
    1423            into=Table,
    1424            copy=copy,
    1425            **opts,
    1426        )
    1427
    1428    def where(
    1429        self,
    1430        *expressions: t.Optional[ExpOrStr],
    1431        append: bool = True,
    1432        dialect: DialectType = None,
    1433        copy: bool = True,
    1434        **opts,
    1435    ) -> Delete:
    1436        """
    1437        Append to or set the WHERE expressions.
    1438
    1439        Example:
    1440            >>> delete("tbl").where("x = 'a' OR x < 'b'").sql()
    1441            "DELETE FROM tbl WHERE x = 'a' OR x < 'b'"
    1442
    1443        Args:
    1444            *expressions: the SQL code strings to parse.
    1445                If an `Expression` instance is passed, it will be used as-is.
    1446                Multiple expressions are combined with an AND operator.
    1447            append: if `True`, AND the new expressions to any existing expression.
    1448                Otherwise, this resets the expression.
    1449            dialect: the dialect used to parse the input expressions.
    1450            copy: if `False`, modify this expression instance in-place.
    1451            opts: other options to use to parse the input expressions.
    1452
    1453        Returns:
    1454            Delete: the modified expression.
    1455        """
    1456        return _apply_conjunction_builder(
    1457            *expressions,
    1458            instance=self,
    1459            arg="where",
    1460            append=append,
    1461            into=Where,
    1462            dialect=dialect,
    1463            copy=copy,
    1464            **opts,
    1465        )
    1466
    1467    def returning(
    1468        self,
    1469        expression: ExpOrStr,
    1470        dialect: DialectType = None,
    1471        copy: bool = True,
    1472        **opts,
    1473    ) -> Delete:
    1474        """
    1475        Set the RETURNING expression. Not supported by all dialects.
    1476
    1477        Example:
    1478            >>> delete("tbl").returning("*", dialect="postgres").sql()
    1479            'DELETE FROM tbl RETURNING *'
    1480
    1481        Args:
    1482            expression: the SQL code strings to parse.
    1483                If an `Expression` instance is passed, it will be used as-is.
    1484            dialect: the dialect used to parse the input expressions.
    1485            copy: if `False`, modify this expression instance in-place.
    1486            opts: other options to use to parse the input expressions.
    1487
    1488        Returns:
    1489            Delete: the modified expression.
    1490        """
    1491        return _apply_builder(
    1492            expression=expression,
    1493            instance=self,
    1494            arg="returning",
    1495            prefix="RETURNING",
    1496            dialect=dialect,
    1497            copy=copy,
    1498            into=Returning,
    1499            **opts,
    1500        )
    1501
    1502
    1503class Drop(Expression):
    1504    arg_types = {
    1505        "this": False,
    1506        "kind": False,
    1507        "exists": False,
    1508        "temporary": False,
    1509        "materialized": False,
    1510        "cascade": False,
    1511        "constraints": False,
    1512        "purge": False,
    1513    }
    1514
    1515
    1516class Filter(Expression):
    1517    arg_types = {"this": True, "expression": True}
    1518
    1519
    1520class Check(Expression):
    1521    pass
    1522
    1523
    1524# https://docs.snowflake.com/en/sql-reference/constructs/connect-by
    1525class Connect(Expression):
    1526    arg_types = {"start": False, "connect": True}
    1527
    1528
    1529class Prior(Expression):
    1530    pass
    1531
    1532
    1533class Directory(Expression):
    1534    # https://spark.apache.org/docs/3.0.0-preview/sql-ref-syntax-dml-insert-overwrite-directory-hive.html
    1535    arg_types = {"this": True, "local": False, "row_format": False}
    1536
    1537
    1538class ForeignKey(Expression):
    1539    arg_types = {
    1540        "expressions": True,
    1541        "reference": False,
    1542        "delete": False,
    1543        "update": False,
    1544    }
    1545
    1546
    1547class ColumnPrefix(Expression):
    1548    arg_types = {"this": True, "expression": True}
    1549
    1550
    1551class PrimaryKey(Expression):
    1552    arg_types = {"expressions": True, "options": False}
    1553
    1554
    1555# https://www.postgresql.org/docs/9.1/sql-selectinto.html
    1556# https://docs.aws.amazon.com/redshift/latest/dg/r_SELECT_INTO.html#r_SELECT_INTO-examples
    1557class Into(Expression):
    1558    arg_types = {"this": True, "temporary": False, "unlogged": False}
    1559
    1560
    1561class From(Expression):
    1562    @property
    1563    def name(self) -> str:
    1564        return self.this.name
    1565
    1566    @property
    1567    def alias_or_name(self) -> str:
    1568        return self.this.alias_or_name
    1569
    1570
    1571class Having(Expression):
    1572    pass
    1573
    1574
    1575class Hint(Expression):
    1576    arg_types = {"expressions": True}
    1577
    1578
    1579class JoinHint(Expression):
    1580    arg_types = {"this": True, "expressions": True}
    1581
    1582
    1583class Identifier(Expression):
    1584    arg_types = {"this": True, "quoted": False, "global": False, "temporary": False}
    1585
    1586    @property
    1587    def quoted(self) -> bool:
    1588        return bool(self.args.get("quoted"))
    1589
    1590    @property
    1591    def hashable_args(self) -> t.Any:
    1592        return (self.this, self.quoted)
    1593
    1594    @property
    1595    def output_name(self) -> str:
    1596        return self.name
    1597
    1598
    1599class Index(Expression):
    1600    arg_types = {
    1601        "this": False,
    1602        "table": False,
    1603        "using": False,
    1604        "where": False,
    1605        "columns": False,
    1606        "unique": False,
    1607        "primary": False,
    1608        "amp": False,  # teradata
    1609        "partition_by": False,  # teradata
    1610    }
    1611
    1612
    1613class Insert(DDL):
    1614    arg_types = {
    1615        "with": False,
    1616        "this": True,
    1617        "expression": False,
    1618        "conflict": False,
    1619        "returning": False,
    1620        "overwrite": False,
    1621        "exists": False,
    1622        "partition": False,
    1623        "alternative": False,
    1624        "where": False,
    1625        "ignore": False,
    1626        "by_name": False,
    1627    }
    1628
    1629    def with_(
    1630        self,
    1631        alias: ExpOrStr,
    1632        as_: ExpOrStr,
    1633        recursive: t.Optional[bool] = None,
    1634        append: bool = True,
    1635        dialect: DialectType = None,
    1636        copy: bool = True,
    1637        **opts,
    1638    ) -> Insert:
    1639        """
    1640        Append to or set the common table expressions.
    1641
    1642        Example:
    1643            >>> insert("SELECT x FROM cte", "t").with_("cte", as_="SELECT * FROM tbl").sql()
    1644            'WITH cte AS (SELECT * FROM tbl) INSERT INTO t SELECT x FROM cte'
    1645
    1646        Args:
    1647            alias: the SQL code string to parse as the table name.
    1648                If an `Expression` instance is passed, this is used as-is.
    1649            as_: the SQL code string to parse as the table expression.
    1650                If an `Expression` instance is passed, it will be used as-is.
    1651            recursive: set the RECURSIVE part of the expression. Defaults to `False`.
    1652            append: if `True`, add to any existing expressions.
    1653                Otherwise, this resets the expressions.
    1654            dialect: the dialect used to parse the input expression.
    1655            copy: if `False`, modify this expression instance in-place.
    1656            opts: other options to use to parse the input expressions.
    1657
    1658        Returns:
    1659            The modified expression.
    1660        """
    1661        return _apply_cte_builder(
    1662            self, alias, as_, recursive=recursive, append=append, dialect=dialect, copy=copy, **opts
    1663        )
    1664
    1665
    1666class OnConflict(Expression):
    1667    arg_types = {
    1668        "duplicate": False,
    1669        "expressions": False,
    1670        "nothing": False,
    1671        "key": False,
    1672        "constraint": False,
    1673    }
    1674
    1675
    1676class Returning(Expression):
    1677    arg_types = {"expressions": True, "into": False}
    1678
    1679
    1680# https://dev.mysql.com/doc/refman/8.0/en/charset-introducer.html
    1681class Introducer(Expression):
    1682    arg_types = {"this": True, "expression": True}
    1683
    1684
    1685# national char, like n'utf8'
    1686class National(Expression):
    1687    pass
    1688
    1689
    1690class LoadData(Expression):
    1691    arg_types = {
    1692        "this": True,
    1693        "local": False,
    1694        "overwrite": False,
    1695        "inpath": True,
    1696        "partition": False,
    1697        "input_format": False,
    1698        "serde": False,
    1699    }
    1700
    1701
    1702class Partition(Expression):
    1703    arg_types = {"expressions": True}
    1704
    1705
    1706class Fetch(Expression):
    1707    arg_types = {
    1708        "direction": False,
    1709        "count": False,
    1710        "percent": False,
    1711        "with_ties": False,
    1712    }
    1713
    1714
    1715class Group(Expression):
    1716    arg_types = {
    1717        "expressions": False,
    1718        "grouping_sets": False,
    1719        "cube": False,
    1720        "rollup": False,
    1721        "totals": False,
    1722        "all": False,
    1723    }
    1724
    1725
    1726class Lambda(Expression):
    1727    arg_types = {"this": True, "expressions": True}
    1728
    1729
    1730class Limit(Expression):
    1731    arg_types = {"this": False, "expression": True, "offset": False}
    1732
    1733
    1734class Literal(Condition):
    1735    arg_types = {"this": True, "is_string": True}
    1736
    1737    @property
    1738    def hashable_args(self) -> t.Any:
    1739        return (self.this, self.args.get("is_string"))
    1740
    1741    @classmethod
    1742    def number(cls, number) -> Literal:
    1743        return cls(this=str(number), is_string=False)
    1744
    1745    @classmethod
    1746    def string(cls, string) -> Literal:
    1747        return cls(this=str(string), is_string=True)
    1748
    1749    @property
    1750    def output_name(self) -> str:
    1751        return self.name
    1752
    1753
    1754class Join(Expression):
    1755    arg_types = {
    1756        "this": True,
    1757        "on": False,
    1758        "side": False,
    1759        "kind": False,
    1760        "using": False,
    1761        "method": False,
    1762        "global": False,
    1763        "hint": False,
    1764    }
    1765
    1766    @property
    1767    def method(self) -> str:
    1768        return self.text("method").upper()
    1769
    1770    @property
    1771    def kind(self) -> str:
    1772        return self.text("kind").upper()
    1773
    1774    @property
    1775    def side(self) -> str:
    1776        return self.text("side").upper()
    1777
    1778    @property
    1779    def hint(self) -> str:
    1780        return self.text("hint").upper()
    1781
    1782    @property
    1783    def alias_or_name(self) -> str:
    1784        return self.this.alias_or_name
    1785
    1786    def on(
    1787        self,
    1788        *expressions: t.Optional[ExpOrStr],
    1789        append: bool = True,
    1790        dialect: DialectType = None,
    1791        copy: bool = True,
    1792        **opts,
    1793    ) -> Join:
    1794        """
    1795        Append to or set the ON expressions.
    1796
    1797        Example:
    1798            >>> import sqlglot
    1799            >>> sqlglot.parse_one("JOIN x", into=Join).on("y = 1").sql()
    1800            'JOIN x ON y = 1'
    1801
    1802        Args:
    1803            *expressions: the SQL code strings to parse.
    1804                If an `Expression` instance is passed, it will be used as-is.
    1805                Multiple expressions are combined with an AND operator.
    1806            append: if `True`, AND the new expressions to any existing expression.
    1807                Otherwise, this resets the expression.
    1808            dialect: the dialect used to parse the input expressions.
    1809            copy: if `False`, modify this expression instance in-place.
    1810            opts: other options to use to parse the input expressions.
    1811
    1812        Returns:
    1813            The modified Join expression.
    1814        """
    1815        join = _apply_conjunction_builder(
    1816            *expressions,
    1817            instance=self,
    1818            arg="on",
    1819            append=append,
    1820            dialect=dialect,
    1821            copy=copy,
    1822            **opts,
    1823        )
    1824
    1825        if join.kind == "CROSS":
    1826            join.set("kind", None)
    1827
    1828        return join
    1829
    1830    def using(
    1831        self,
    1832        *expressions: t.Optional[ExpOrStr],
    1833        append: bool = True,
    1834        dialect: DialectType = None,
    1835        copy: bool = True,
    1836        **opts,
    1837    ) -> Join:
    1838        """
    1839        Append to or set the USING expressions.
    1840
    1841        Example:
    1842            >>> import sqlglot
    1843            >>> sqlglot.parse_one("JOIN x", into=Join).using("foo", "bla").sql()
    1844            'JOIN x USING (foo, bla)'
    1845
    1846        Args:
    1847            *expressions: the SQL code strings to parse.
    1848                If an `Expression` instance is passed, it will be used as-is.
    1849            append: if `True`, concatenate the new expressions to the existing "using" list.
    1850                Otherwise, this resets the expression.
    1851            dialect: the dialect used to parse the input expressions.
    1852            copy: if `False`, modify this expression instance in-place.
    1853            opts: other options to use to parse the input expressions.
    1854
    1855        Returns:
    1856            The modified Join expression.
    1857        """
    1858        join = _apply_list_builder(
    1859            *expressions,
    1860            instance=self,
    1861            arg="using",
    1862            append=append,
    1863            dialect=dialect,
    1864            copy=copy,
    1865            **opts,
    1866        )
    1867
    1868        if join.kind == "CROSS":
    1869            join.set("kind", None)
    1870
    1871        return join
    1872
    1873
    1874class Lateral(UDTF):
    1875    arg_types = {"this": True, "view": False, "outer": False, "alias": False}
    1876
    1877
    1878class MatchRecognize(Expression):
    1879    arg_types = {
    1880        "partition_by": False,
    1881        "order": False,
    1882        "measures": False,
    1883        "rows": False,
    1884        "after": False,
    1885        "pattern": False,
    1886        "define": False,
    1887        "alias": False,
    1888    }
    1889
    1890
    1891# Clickhouse FROM FINAL modifier
    1892# https://clickhouse.com/docs/en/sql-reference/statements/select/from/#final-modifier
    1893class Final(Expression):
    1894    pass
    1895
    1896
    1897class Offset(Expression):
    1898    arg_types = {"this": False, "expression": True}
    1899
    1900
    1901class Order(Expression):
    1902    arg_types = {"this": False, "expressions": True}
    1903
    1904
    1905# hive specific sorts
    1906# https://cwiki.apache.org/confluence/display/Hive/LanguageManual+SortBy
    1907class Cluster(Order):
    1908    pass
    1909
    1910
    1911class Distribute(Order):
    1912    pass
    1913
    1914
    1915class Sort(Order):
    1916    pass
    1917
    1918
    1919class Ordered(Expression):
    1920    arg_types = {"this": True, "desc": True, "nulls_first": True}
    1921
    1922
    1923class Property(Expression):
    1924    arg_types = {"this": True, "value": True}
    1925
    1926
    1927class AlgorithmProperty(Property):
    1928    arg_types = {"this": True}
    1929
    1930
    1931class AutoIncrementProperty(Property):
    1932    arg_types = {"this": True}
    1933
    1934
    1935class BlockCompressionProperty(Property):
    1936    arg_types = {"autotemp": False, "always": False, "default": True, "manual": True, "never": True}
    1937
    1938
    1939class CharacterSetProperty(Property):
    1940    arg_types = {"this": True, "default": True}
    1941
    1942
    1943class ChecksumProperty(Property):
    1944    arg_types = {"on": False, "default": False}
    1945
    1946
    1947class CollateProperty(Property):
    1948    arg_types = {"this": True}
    1949
    1950
    1951class CopyGrantsProperty(Property):
    1952    arg_types = {}
    1953
    1954
    1955class DataBlocksizeProperty(Property):
    1956    arg_types = {
    1957        "size": False,
    1958        "units": False,
    1959        "minimum": False,
    1960        "maximum": False,
    1961        "default": False,
    1962    }
    1963
    1964
    1965class DefinerProperty(Property):
    1966    arg_types = {"this": True}
    1967
    1968
    1969class DistKeyProperty(Property):
    1970    arg_types = {"this": True}
    1971
    1972
    1973class DistStyleProperty(Property):
    1974    arg_types = {"this": True}
    1975
    1976
    1977class EngineProperty(Property):
    1978    arg_types = {"this": True}
    1979
    1980
    1981class HeapProperty(Property):
    1982    arg_types = {}
    1983
    1984
    1985class ToTableProperty(Property):
    1986    arg_types = {"this": True}
    1987
    1988
    1989class ExecuteAsProperty(Property):
    1990    arg_types = {"this": True}
    1991
    1992
    1993class ExternalProperty(Property):
    1994    arg_types = {"this": False}
    1995
    1996
    1997class FallbackProperty(Property):
    1998    arg_types = {"no": True, "protection": False}
    1999
    2000
    2001class FileFormatProperty(Property):
    2002    arg_types = {"this": True}
    2003
    2004
    2005class FreespaceProperty(Property):
    2006    arg_types = {"this": True, "percent": False}
    2007
    2008
    2009class InputOutputFormat(Expression):
    2010    arg_types = {"input_format": False, "output_format": False}
    2011
    2012
    2013class IsolatedLoadingProperty(Property):
    2014    arg_types = {
    2015        "no": True,
    2016        "concurrent": True,
    2017        "for_all": True,
    2018        "for_insert": True,
    2019        "for_none": True,
    2020    }
    2021
    2022
    2023class JournalProperty(Property):
    2024    arg_types = {
    2025        "no": False,
    2026        "dual": False,
    2027        "before": False,
    2028        "local": False,
    2029        "after": False,
    2030    }
    2031
    2032
    2033class LanguageProperty(Property):
    2034    arg_types = {"this": True}
    2035
    2036
    2037# spark ddl
    2038class ClusteredByProperty(Property):
    2039    arg_types = {"expressions": True, "sorted_by": False, "buckets": True}
    2040
    2041
    2042class DictProperty(Property):
    2043    arg_types = {"this": True, "kind": True, "settings": False}
    2044
    2045
    2046class DictSubProperty(Property):
    2047    pass
    2048
    2049
    2050class DictRange(Property):
    2051    arg_types = {"this": True, "min": True, "max": True}
    2052
    2053
    2054# Clickhouse CREATE ... ON CLUSTER modifier
    2055# https://clickhouse.com/docs/en/sql-reference/distributed-ddl
    2056class OnCluster(Property):
    2057    arg_types = {"this": True}
    2058
    2059
    2060class LikeProperty(Property):
    2061    arg_types = {"this": True, "expressions": False}
    2062
    2063
    2064class LocationProperty(Property):
    2065    arg_types = {"this": True}
    2066
    2067
    2068class LockingProperty(Property):
    2069    arg_types = {
    2070        "this": False,
    2071        "kind": True,
    2072        "for_or_in": True,
    2073        "lock_type": True,
    2074        "override": False,
    2075    }
    2076
    2077
    2078class LogProperty(Property):
    2079    arg_types = {"no": True}
    2080
    2081
    2082class MaterializedProperty(Property):
    2083    arg_types = {"this": False}
    2084
    2085
    2086class MergeBlockRatioProperty(Property):
    2087    arg_types = {"this": False, "no": False, "default": False, "percent": False}
    2088
    2089
    2090class NoPrimaryIndexProperty(Property):
    2091    arg_types = {}
    2092
    2093
    2094class OnProperty(Property):
    2095    arg_types = {"this": True}
    2096
    2097
    2098class OnCommitProperty(Property):
    2099    arg_types = {"delete": False}
    2100
    2101
    2102class PartitionedByProperty(Property):
    2103    arg_types = {"this": True}
    2104
    2105
    2106class ReturnsProperty(Property):
    2107    arg_types = {"this": True, "is_table": False, "table": False}
    2108
    2109
    2110class RowFormatProperty(Property):
    2111    arg_types = {"this": True}
    2112
    2113
    2114class RowFormatDelimitedProperty(Property):
    2115    # https://cwiki.apache.org/confluence/display/hive/languagemanual+dml
    2116    arg_types = {
    2117        "fields": False,
    2118        "escaped": False,
    2119        "collection_items": False,
    2120        "map_keys": False,
    2121        "lines": False,
    2122        "null": False,
    2123        "serde": False,
    2124    }
    2125
    2126
    2127class RowFormatSerdeProperty(Property):
    2128    arg_types = {"this": True, "serde_properties": False}
    2129
    2130
    2131# https://spark.apache.org/docs/3.1.2/sql-ref-syntax-qry-select-transform.html
    2132class QueryTransform(Expression):
    2133    arg_types = {
    2134        "expressions": True,
    2135        "command_script": True,
    2136        "schema": False,
    2137        "row_format_before": False,
    2138        "record_writer": False,
    2139        "row_format_after": False,
    2140        "record_reader": False,
    2141    }
    2142
    2143
    2144class SchemaCommentProperty(Property):
    2145    arg_types = {"this": True}
    2146
    2147
    2148class SerdeProperties(Property):
    2149    arg_types = {"expressions": True}
    2150
    2151
    2152class SetProperty(Property):
    2153    arg_types = {"multi": True}
    2154
    2155
    2156class SettingsProperty(Property):
    2157    arg_types = {"expressions": True}
    2158
    2159
    2160class SortKeyProperty(Property):
    2161    arg_types = {"this": True, "compound": False}
    2162
    2163
    2164class SqlSecurityProperty(Property):
    2165    arg_types = {"definer": True}
    2166
    2167
    2168class StabilityProperty(Property):
    2169    arg_types = {"this": True}
    2170
    2171
    2172class TemporaryProperty(Property):
    2173    arg_types = {}
    2174
    2175
    2176class TransientProperty(Property):
    2177    arg_types = {"this": False}
    2178
    2179
    2180class VolatileProperty(Property):
    2181    arg_types = {"this": False}
    2182
    2183
    2184class WithDataProperty(Property):
    2185    arg_types = {"no": True, "statistics": False}
    2186
    2187
    2188class WithJournalTableProperty(Property):
    2189    arg_types = {"this": True}
    2190
    2191
    2192class Properties(Expression):
    2193    arg_types = {"expressions": True}
    2194
    2195    NAME_TO_PROPERTY = {
    2196        "ALGORITHM": AlgorithmProperty,
    2197        "AUTO_INCREMENT": AutoIncrementProperty,
    2198        "CHARACTER SET": CharacterSetProperty,
    2199        "CLUSTERED_BY": ClusteredByProperty,
    2200        "COLLATE": CollateProperty,
    2201        "COMMENT": SchemaCommentProperty,
    2202        "DEFINER": DefinerProperty,
    2203        "DISTKEY": DistKeyProperty,
    2204        "DISTSTYLE": DistStyleProperty,
    2205        "ENGINE": EngineProperty,
    2206        "EXECUTE AS": ExecuteAsProperty,
    2207        "FORMAT": FileFormatProperty,
    2208        "LANGUAGE": LanguageProperty,
    2209        "LOCATION": LocationProperty,
    2210        "PARTITIONED_BY": PartitionedByProperty,
    2211        "RETURNS": ReturnsProperty,
    2212        "ROW_FORMAT": RowFormatProperty,
    2213        "SORTKEY": SortKeyProperty,
    2214    }
    2215
    2216    PROPERTY_TO_NAME = {v: k for k, v in NAME_TO_PROPERTY.items()}
    2217
    2218    # CREATE property locations
    2219    # Form: schema specified
    2220    #   create [POST_CREATE]
    2221    #     table a [POST_NAME]
    2222    #     (b int) [POST_SCHEMA]
    2223    #     with ([POST_WITH])
    2224    #     index (b) [POST_INDEX]
    2225    #
    2226    # Form: alias selection
    2227    #   create [POST_CREATE]
    2228    #     table a [POST_NAME]
    2229    #     as [POST_ALIAS] (select * from b) [POST_EXPRESSION]
    2230    #     index (c) [POST_INDEX]
    2231    class Location(AutoName):
    2232        POST_CREATE = auto()
    2233        POST_NAME = auto()
    2234        POST_SCHEMA = auto()
    2235        POST_WITH = auto()
    2236        POST_ALIAS = auto()
    2237        POST_EXPRESSION = auto()
    2238        POST_INDEX = auto()
    2239        UNSUPPORTED = auto()
    2240
    2241    @classmethod
    2242    def from_dict(cls, properties_dict: t.Dict) -> Properties:
    2243        expressions = []
    2244        for key, value in properties_dict.items():
    2245            property_cls = cls.NAME_TO_PROPERTY.get(key.upper())
    2246            if property_cls:
    2247                expressions.append(property_cls(this=convert(value)))
    2248            else:
    2249                expressions.append(Property(this=Literal.string(key), value=convert(value)))
    2250
    2251        return cls(expressions=expressions)
    2252
    2253
    2254class Qualify(Expression):
    2255    pass
    2256
    2257
    2258# https://www.ibm.com/docs/en/ias?topic=procedures-return-statement-in-sql
    2259class Return(Expression):
    2260    pass
    2261
    2262
    2263class Reference(Expression):
    2264    arg_types = {"this": True, "expressions": False, "options": False}
    2265
    2266
    2267class Tuple(Expression):
    2268    arg_types = {"expressions": False}
    2269
    2270    def isin(
    2271        self,
    2272        *expressions: t.Any,
    2273        query: t.Optional[ExpOrStr] = None,
    2274        unnest: t.Optional[ExpOrStr] | t.Collection[ExpOrStr] = None,
    2275        copy: bool = True,
    2276        **opts,
    2277    ) -> In:
    2278        return In(
    2279            this=maybe_copy(self, copy),
    2280            expressions=[convert(e, copy=copy) for e in expressions],
    2281            query=maybe_parse(query, copy=copy, **opts) if query else None,
    2282            unnest=Unnest(
    2283                expressions=[
    2284                    maybe_parse(t.cast(ExpOrStr, e), copy=copy, **opts) for e in ensure_list(unnest)
    2285                ]
    2286            )
    2287            if unnest
    2288            else None,
    2289        )
    2290
    2291
    2292class Subqueryable(Unionable):
    2293    def subquery(self, alias: t.Optional[ExpOrStr] = None, copy: bool = True) -> Subquery:
    2294        """
    2295        Convert this expression to an aliased expression that can be used as a Subquery.
    2296
    2297        Example:
    2298            >>> subquery = Select().select("x").from_("tbl").subquery()
    2299            >>> Select().select("x").from_(subquery).sql()
    2300            'SELECT x FROM (SELECT x FROM tbl)'
    2301
    2302        Args:
    2303            alias (str | Identifier): an optional alias for the subquery
    2304            copy (bool): if `False`, modify this expression instance in-place.
    2305
    2306        Returns:
    2307            Alias: the subquery
    2308        """
    2309        instance = maybe_copy(self, copy)
    2310        if not isinstance(alias, Expression):
    2311            alias = TableAlias(this=to_identifier(alias)) if alias else None
    2312
    2313        return Subquery(this=instance, alias=alias)
    2314
    2315    def limit(
    2316        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2317    ) -> Select:
    2318        raise NotImplementedError
    2319
    2320    @property
    2321    def ctes(self):
    2322        with_ = self.args.get("with")
    2323        if not with_:
    2324            return []
    2325        return with_.expressions
    2326
    2327    @property
    2328    def selects(self) -> t.List[Expression]:
    2329        raise NotImplementedError("Subqueryable objects must implement `selects`")
    2330
    2331    @property
    2332    def named_selects(self) -> t.List[str]:
    2333        raise NotImplementedError("Subqueryable objects must implement `named_selects`")
    2334
    2335    def select(
    2336        self,
    2337        *expressions: t.Optional[ExpOrStr],
    2338        append: bool = True,
    2339        dialect: DialectType = None,
    2340        copy: bool = True,
    2341        **opts,
    2342    ) -> Subqueryable:
    2343        raise NotImplementedError("Subqueryable objects must implement `select`")
    2344
    2345    def with_(
    2346        self,
    2347        alias: ExpOrStr,
    2348        as_: ExpOrStr,
    2349        recursive: t.Optional[bool] = None,
    2350        append: bool = True,
    2351        dialect: DialectType = None,
    2352        copy: bool = True,
    2353        **opts,
    2354    ) -> Subqueryable:
    2355        """
    2356        Append to or set the common table expressions.
    2357
    2358        Example:
    2359            >>> Select().with_("tbl2", as_="SELECT * FROM tbl").select("x").from_("tbl2").sql()
    2360            'WITH tbl2 AS (SELECT * FROM tbl) SELECT x FROM tbl2'
    2361
    2362        Args:
    2363            alias: the SQL code string to parse as the table name.
    2364                If an `Expression` instance is passed, this is used as-is.
    2365            as_: the SQL code string to parse as the table expression.
    2366                If an `Expression` instance is passed, it will be used as-is.
    2367            recursive: set the RECURSIVE part of the expression. Defaults to `False`.
    2368            append: if `True`, add to any existing expressions.
    2369                Otherwise, this resets the expressions.
    2370            dialect: the dialect used to parse the input expression.
    2371            copy: if `False`, modify this expression instance in-place.
    2372            opts: other options to use to parse the input expressions.
    2373
    2374        Returns:
    2375            The modified expression.
    2376        """
    2377        return _apply_cte_builder(
    2378            self, alias, as_, recursive=recursive, append=append, dialect=dialect, copy=copy, **opts
    2379        )
    2380
    2381
    2382QUERY_MODIFIERS = {
    2383    "match": False,
    2384    "laterals": False,
    2385    "joins": False,
    2386    "connect": False,
    2387    "pivots": False,
    2388    "where": False,
    2389    "group": False,
    2390    "having": False,
    2391    "qualify": False,
    2392    "windows": False,
    2393    "distribute": False,
    2394    "sort": False,
    2395    "cluster": False,
    2396    "order": False,
    2397    "limit": False,
    2398    "offset": False,
    2399    "locks": False,
    2400    "sample": False,
    2401    "settings": False,
    2402    "format": False,
    2403}
    2404
    2405
    2406# https://learn.microsoft.com/en-us/sql/t-sql/queries/hints-transact-sql-table?view=sql-server-ver16
    2407class WithTableHint(Expression):
    2408    arg_types = {"expressions": True}
    2409
    2410
    2411# https://dev.mysql.com/doc/refman/8.0/en/index-hints.html
    2412class IndexTableHint(Expression):
    2413    arg_types = {"this": True, "expressions": False, "target": False}
    2414
    2415
    2416class Table(Expression):
    2417    arg_types = {
    2418        "this": True,
    2419        "alias": False,
    2420        "db": False,
    2421        "catalog": False,
    2422        "laterals": False,
    2423        "joins": False,
    2424        "pivots": False,
    2425        "hints": False,
    2426        "system_time": False,
    2427        "version": False,
    2428    }
    2429
    2430    @property
    2431    def name(self) -> str:
    2432        if isinstance(self.this, Func):
    2433            return ""
    2434        return self.this.name
    2435
    2436    @property
    2437    def db(self) -> str:
    2438        return self.text("db")
    2439
    2440    @property
    2441    def catalog(self) -> str:
    2442        return self.text("catalog")
    2443
    2444    @property
    2445    def selects(self) -> t.List[Expression]:
    2446        return []
    2447
    2448    @property
    2449    def named_selects(self) -> t.List[str]:
    2450        return []
    2451
    2452    @property
    2453    def parts(self) -> t.List[Identifier]:
    2454        """Return the parts of a table in order catalog, db, table."""
    2455        parts: t.List[Identifier] = []
    2456
    2457        for arg in ("catalog", "db", "this"):
    2458            part = self.args.get(arg)
    2459
    2460            if isinstance(part, Identifier):
    2461                parts.append(part)
    2462            elif isinstance(part, Dot):
    2463                parts.extend(part.flatten())
    2464
    2465        return parts
    2466
    2467
    2468class Union(Subqueryable):
    2469    arg_types = {
    2470        "with": False,
    2471        "this": True,
    2472        "expression": True,
    2473        "distinct": False,
    2474        "by_name": False,
    2475        **QUERY_MODIFIERS,
    2476    }
    2477
    2478    def limit(
    2479        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2480    ) -> Select:
    2481        """
    2482        Set the LIMIT expression.
    2483
    2484        Example:
    2485            >>> select("1").union(select("1")).limit(1).sql()
    2486            'SELECT * FROM (SELECT 1 UNION SELECT 1) AS _l_0 LIMIT 1'
    2487
    2488        Args:
    2489            expression: the SQL code string to parse.
    2490                This can also be an integer.
    2491                If a `Limit` instance is passed, this is used as-is.
    2492                If another `Expression` instance is passed, it will be wrapped in a `Limit`.
    2493            dialect: the dialect used to parse the input expression.
    2494            copy: if `False`, modify this expression instance in-place.
    2495            opts: other options to use to parse the input expressions.
    2496
    2497        Returns:
    2498            The limited subqueryable.
    2499        """
    2500        return (
    2501            select("*")
    2502            .from_(self.subquery(alias="_l_0", copy=copy))
    2503            .limit(expression, dialect=dialect, copy=False, **opts)
    2504        )
    2505
    2506    def select(
    2507        self,
    2508        *expressions: t.Optional[ExpOrStr],
    2509        append: bool = True,
    2510        dialect: DialectType = None,
    2511        copy: bool = True,
    2512        **opts,
    2513    ) -> Union:
    2514        """Append to or set the SELECT of the union recursively.
    2515
    2516        Example:
    2517            >>> from sqlglot import parse_one
    2518            >>> parse_one("select a from x union select a from y union select a from z").select("b").sql()
    2519            'SELECT a, b FROM x UNION SELECT a, b FROM y UNION SELECT a, b FROM z'
    2520
    2521        Args:
    2522            *expressions: the SQL code strings to parse.
    2523                If an `Expression` instance is passed, it will be used as-is.
    2524            append: if `True`, add to any existing expressions.
    2525                Otherwise, this resets the expressions.
    2526            dialect: the dialect used to parse the input expressions.
    2527            copy: if `False`, modify this expression instance in-place.
    2528            opts: other options to use to parse the input expressions.
    2529
    2530        Returns:
    2531            Union: the modified expression.
    2532        """
    2533        this = self.copy() if copy else self
    2534        this.this.unnest().select(*expressions, append=append, dialect=dialect, copy=False, **opts)
    2535        this.expression.unnest().select(
    2536            *expressions, append=append, dialect=dialect, copy=False, **opts
    2537        )
    2538        return this
    2539
    2540    @property
    2541    def named_selects(self) -> t.List[str]:
    2542        return self.this.unnest().named_selects
    2543
    2544    @property
    2545    def is_star(self) -> bool:
    2546        return self.this.is_star or self.expression.is_star
    2547
    2548    @property
    2549    def selects(self) -> t.List[Expression]:
    2550        return self.this.unnest().selects
    2551
    2552    @property
    2553    def left(self):
    2554        return self.this
    2555
    2556    @property
    2557    def right(self):
    2558        return self.expression
    2559
    2560
    2561class Except(Union):
    2562    pass
    2563
    2564
    2565class Intersect(Union):
    2566    pass
    2567
    2568
    2569class Unnest(UDTF):
    2570    arg_types = {
    2571        "expressions": True,
    2572        "ordinality": False,
    2573        "alias": False,
    2574        "offset": False,
    2575    }
    2576
    2577
    2578class Update(Expression):
    2579    arg_types = {
    2580        "with": False,
    2581        "this": False,
    2582        "expressions": True,
    2583        "from": False,
    2584        "where": False,
    2585        "returning": False,
    2586        "order": False,
    2587        "limit": False,
    2588    }
    2589
    2590
    2591class Values(UDTF):
    2592    arg_types = {
    2593        "expressions": True,
    2594        "ordinality": False,
    2595        "alias": False,
    2596    }
    2597
    2598
    2599class Var(Expression):
    2600    pass
    2601
    2602
    2603class Version(Expression):
    2604    """
    2605    Time travel, iceberg, bigquery etc
    2606    https://trino.io/docs/current/connector/iceberg.html?highlight=snapshot#using-snapshots
    2607    https://www.databricks.com/blog/2019/02/04/introducing-delta-time-travel-for-large-scale-data-lakes.html
    2608    https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#for_system_time_as_of
    2609    https://learn.microsoft.com/en-us/sql/relational-databases/tables/querying-data-in-a-system-versioned-temporal-table?view=sql-server-ver16
    2610    this is either TIMESTAMP or VERSION
    2611    kind is ("AS OF", "BETWEEN")
    2612    """
    2613
    2614    arg_types = {"this": True, "kind": True, "expression": False}
    2615
    2616
    2617class Schema(Expression):
    2618    arg_types = {"this": False, "expressions": False}
    2619
    2620
    2621# https://dev.mysql.com/doc/refman/8.0/en/select.html
    2622# https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/SELECT.html
    2623class Lock(Expression):
    2624    arg_types = {"update": True, "expressions": False, "wait": False}
    2625
    2626
    2627class Select(Subqueryable):
    2628    arg_types = {
    2629        "with": False,
    2630        "kind": False,
    2631        "expressions": False,
    2632        "hint": False,
    2633        "distinct": False,
    2634        "into": False,
    2635        "from": False,
    2636        **QUERY_MODIFIERS,
    2637    }
    2638
    2639    def from_(
    2640        self, expression: ExpOrStr, dialect: DialectType = None, copy: bool = True, **opts
    2641    ) -> Select:
    2642        """
    2643        Set the FROM expression.
    2644
    2645        Example:
    2646            >>> Select().from_("tbl").select("x").sql()
    2647            'SELECT x FROM tbl'
    2648
    2649        Args:
    2650            expression : the SQL code strings to parse.
    2651                If a `From` instance is passed, this is used as-is.
    2652                If another `Expression` instance is passed, it will be wrapped in a `From`.
    2653            dialect: the dialect used to parse the input expression.
    2654            copy: if `False`, modify this expression instance in-place.
    2655            opts: other options to use to parse the input expressions.
    2656
    2657        Returns:
    2658            The modified Select expression.
    2659        """
    2660        return _apply_builder(
    2661            expression=expression,
    2662            instance=self,
    2663            arg="from",
    2664            into=From,
    2665            prefix="FROM",
    2666            dialect=dialect,
    2667            copy=copy,
    2668            **opts,
    2669        )
    2670
    2671    def group_by(
    2672        self,
    2673        *expressions: t.Optional[ExpOrStr],
    2674        append: bool = True,
    2675        dialect: DialectType = None,
    2676        copy: bool = True,
    2677        **opts,
    2678    ) -> Select:
    2679        """
    2680        Set the GROUP BY expression.
    2681
    2682        Example:
    2683            >>> Select().from_("tbl").select("x", "COUNT(1)").group_by("x").sql()
    2684            'SELECT x, COUNT(1) FROM tbl GROUP BY x'
    2685
    2686        Args:
    2687            *expressions: the SQL code strings to parse.
    2688                If a `Group` instance is passed, this is used as-is.
    2689                If another `Expression` instance is passed, it will be wrapped in a `Group`.
    2690                If nothing is passed in then a group by is not applied to the expression
    2691            append: if `True`, add to any existing expressions.
    2692                Otherwise, this flattens all the `Group` expression into a single expression.
    2693            dialect: the dialect used to parse the input expression.
    2694            copy: if `False`, modify this expression instance in-place.
    2695            opts: other options to use to parse the input expressions.
    2696
    2697        Returns:
    2698            The modified Select expression.
    2699        """
    2700        if not expressions:
    2701            return self if not copy else self.copy()
    2702
    2703        return _apply_child_list_builder(
    2704            *expressions,
    2705            instance=self,
    2706            arg="group",
    2707            append=append,
    2708            copy=copy,
    2709            prefix="GROUP BY",
    2710            into=Group,
    2711            dialect=dialect,
    2712            **opts,
    2713        )
    2714
    2715    def order_by(
    2716        self,
    2717        *expressions: t.Optional[ExpOrStr],
    2718        append: bool = True,
    2719        dialect: DialectType = None,
    2720        copy: bool = True,
    2721        **opts,
    2722    ) -> Select:
    2723        """
    2724        Set the ORDER BY expression.
    2725
    2726        Example:
    2727            >>> Select().from_("tbl").select("x").order_by("x DESC").sql()
    2728            'SELECT x FROM tbl ORDER BY x DESC'
    2729
    2730        Args:
    2731            *expressions: the SQL code strings to parse.
    2732                If a `Group` instance is passed, this is used as-is.
    2733                If another `Expression` instance is passed, it will be wrapped in a `Order`.
    2734            append: if `True`, add to any existing expressions.
    2735                Otherwise, this flattens all the `Order` expression into a single expression.
    2736            dialect: the dialect used to parse the input expression.
    2737            copy: if `False`, modify this expression instance in-place.
    2738            opts: other options to use to parse the input expressions.
    2739
    2740        Returns:
    2741            The modified Select expression.
    2742        """
    2743        return _apply_child_list_builder(
    2744            *expressions,
    2745            instance=self,
    2746            arg="order",
    2747            append=append,
    2748            copy=copy,
    2749            prefix="ORDER BY",
    2750            into=Order,
    2751            dialect=dialect,
    2752            **opts,
    2753        )
    2754
    2755    def sort_by(
    2756        self,
    2757        *expressions: t.Optional[ExpOrStr],
    2758        append: bool = True,
    2759        dialect: DialectType = None,
    2760        copy: bool = True,
    2761        **opts,
    2762    ) -> Select:
    2763        """
    2764        Set the SORT BY expression.
    2765
    2766        Example:
    2767            >>> Select().from_("tbl").select("x").sort_by("x DESC").sql(dialect="hive")
    2768            'SELECT x FROM tbl SORT BY x DESC'
    2769
    2770        Args:
    2771            *expressions: the SQL code strings to parse.
    2772                If a `Group` instance is passed, this is used as-is.
    2773                If another `Expression` instance is passed, it will be wrapped in a `SORT`.
    2774            append: if `True`, add to any existing expressions.
    2775                Otherwise, this flattens all the `Order` expression into a single expression.
    2776            dialect: the dialect used to parse the input expression.
    2777            copy: if `False`, modify this expression instance in-place.
    2778            opts: other options to use to parse the input expressions.
    2779
    2780        Returns:
    2781            The modified Select expression.
    2782        """
    2783        return _apply_child_list_builder(
    2784            *expressions,
    2785            instance=self,
    2786            arg="sort",
    2787            append=append,
    2788            copy=copy,
    2789            prefix="SORT BY",
    2790            into=Sort,
    2791            dialect=dialect,
    2792            **opts,
    2793        )
    2794
    2795    def cluster_by(
    2796        self,
    2797        *expressions: t.Optional[ExpOrStr],
    2798        append: bool = True,
    2799        dialect: DialectType = None,
    2800        copy: bool = True,
    2801        **opts,
    2802    ) -> Select:
    2803        """
    2804        Set the CLUSTER BY expression.
    2805
    2806        Example:
    2807            >>> Select().from_("tbl").select("x").cluster_by("x DESC").sql(dialect="hive")
    2808            'SELECT x FROM tbl CLUSTER BY x DESC'
    2809
    2810        Args:
    2811            *expressions: the SQL code strings to parse.
    2812                If a `Group` instance is passed, this is used as-is.
    2813                If another `Expression` instance is passed, it will be wrapped in a `Cluster`.
    2814            append: if `True`, add to any existing expressions.
    2815                Otherwise, this flattens all the `Order` expression into a single expression.
    2816            dialect: the dialect used to parse the input expression.
    2817            copy: if `False`, modify this expression instance in-place.
    2818            opts: other options to use to parse the input expressions.
    2819
    2820        Returns:
    2821            The modified Select expression.
    2822        """
    2823        return _apply_child_list_builder(
    2824            *expressions,
    2825            instance=self,
    2826            arg="cluster",
    2827            append=append,
    2828            copy=copy,
    2829            prefix="CLUSTER BY",
    2830            into=Cluster,
    2831            dialect=dialect,
    2832            **opts,
    2833        )
    2834
    2835    def limit(
    2836        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2837    ) -> Select:
    2838        """
    2839        Set the LIMIT expression.
    2840
    2841        Example:
    2842            >>> Select().from_("tbl").select("x").limit(10).sql()
    2843            'SELECT x FROM tbl LIMIT 10'
    2844
    2845        Args:
    2846            expression: the SQL code string to parse.
    2847                This can also be an integer.
    2848                If a `Limit` instance is passed, this is used as-is.
    2849                If another `Expression` instance is passed, it will be wrapped in a `Limit`.
    2850            dialect: the dialect used to parse the input expression.
    2851            copy: if `False`, modify this expression instance in-place.
    2852            opts: other options to use to parse the input expressions.
    2853
    2854        Returns:
    2855            Select: the modified expression.
    2856        """
    2857        return _apply_builder(
    2858            expression=expression,
    2859            instance=self,
    2860            arg="limit",
    2861            into=Limit,
    2862            prefix="LIMIT",
    2863            dialect=dialect,
    2864            copy=copy,
    2865            **opts,
    2866        )
    2867
    2868    def offset(
    2869        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2870    ) -> Select:
    2871        """
    2872        Set the OFFSET expression.
    2873
    2874        Example:
    2875            >>> Select().from_("tbl").select("x").offset(10).sql()
    2876            'SELECT x FROM tbl OFFSET 10'
    2877
    2878        Args:
    2879            expression: the SQL code string to parse.
    2880                This can also be an integer.
    2881                If a `Offset` instance is passed, this is used as-is.
    2882                If another `Expression` instance is passed, it will be wrapped in a `Offset`.
    2883            dialect: the dialect used to parse the input expression.
    2884            copy: if `False`, modify this expression instance in-place.
    2885            opts: other options to use to parse the input expressions.
    2886
    2887        Returns:
    2888            The modified Select expression.
    2889        """
    2890        return _apply_builder(
    2891            expression=expression,
    2892            instance=self,
    2893            arg="offset",
    2894            into=Offset,
    2895            prefix="OFFSET",
    2896            dialect=dialect,
    2897            copy=copy,
    2898            **opts,
    2899        )
    2900
    2901    def select(
    2902        self,
    2903        *expressions: t.Optional[ExpOrStr],
    2904        append: bool = True,
    2905        dialect: DialectType = None,
    2906        copy: bool = True,
    2907        **opts,
    2908    ) -> Select:
    2909        """
    2910        Append to or set the SELECT expressions.
    2911
    2912        Example:
    2913            >>> Select().select("x", "y").sql()
    2914            'SELECT x, y'
    2915
    2916        Args:
    2917            *expressions: the SQL code strings to parse.
    2918                If an `Expression` instance is passed, it will be used as-is.
    2919            append: if `True`, add to any existing expressions.
    2920                Otherwise, this resets the expressions.
    2921            dialect: the dialect used to parse the input expressions.
    2922            copy: if `False`, modify this expression instance in-place.
    2923            opts: other options to use to parse the input expressions.
    2924
    2925        Returns:
    2926            The modified Select expression.
    2927        """
    2928        return _apply_list_builder(
    2929            *expressions,
    2930            instance=self,
    2931            arg="expressions",
    2932            append=append,
    2933            dialect=dialect,
    2934            copy=copy,
    2935            **opts,
    2936        )
    2937
    2938    def lateral(
    2939        self,
    2940        *expressions: t.Optional[ExpOrStr],
    2941        append: bool = True,
    2942        dialect: DialectType = None,
    2943        copy: bool = True,
    2944        **opts,
    2945    ) -> Select:
    2946        """
    2947        Append to or set the LATERAL expressions.
    2948
    2949        Example:
    2950            >>> Select().select("x").lateral("OUTER explode(y) tbl2 AS z").from_("tbl").sql()
    2951            'SELECT x FROM tbl LATERAL VIEW OUTER EXPLODE(y) tbl2 AS z'
    2952
    2953        Args:
    2954            *expressions: the SQL code strings to parse.
    2955                If an `Expression` instance is passed, it will be used as-is.
    2956            append: if `True`, add to any existing expressions.
    2957                Otherwise, this resets the expressions.
    2958            dialect: the dialect used to parse the input expressions.
    2959            copy: if `False`, modify this expression instance in-place.
    2960            opts: other options to use to parse the input expressions.
    2961
    2962        Returns:
    2963            The modified Select expression.
    2964        """
    2965        return _apply_list_builder(
    2966            *expressions,
    2967            instance=self,
    2968            arg="laterals",
    2969            append=append,
    2970            into=Lateral,
    2971            prefix="LATERAL VIEW",
    2972            dialect=dialect,
    2973            copy=copy,
    2974            **opts,
    2975        )
    2976
    2977    def join(
    2978        self,
    2979        expression: ExpOrStr,
    2980        on: t.Optional[ExpOrStr] = None,
    2981        using: t.Optional[ExpOrStr | t.Collection[ExpOrStr]] = None,
    2982        append: bool = True,
    2983        join_type: t.Optional[str] = None,
    2984        join_alias: t.Optional[Identifier | str] = None,
    2985        dialect: DialectType = None,
    2986        copy: bool = True,
    2987        **opts,
    2988    ) -> Select:
    2989        """
    2990        Append to or set the JOIN expressions.
    2991
    2992        Example:
    2993            >>> Select().select("*").from_("tbl").join("tbl2", on="tbl1.y = tbl2.y").sql()
    2994            'SELECT * FROM tbl JOIN tbl2 ON tbl1.y = tbl2.y'
    2995
    2996            >>> Select().select("1").from_("a").join("b", using=["x", "y", "z"]).sql()
    2997            'SELECT 1 FROM a JOIN b USING (x, y, z)'
    2998
    2999            Use `join_type` to change the type of join:
    3000
    3001            >>> Select().select("*").from_("tbl").join("tbl2", on="tbl1.y = tbl2.y", join_type="left outer").sql()
    3002            'SELECT * FROM tbl LEFT OUTER JOIN tbl2 ON tbl1.y = tbl2.y'
    3003
    3004        Args:
    3005            expression: the SQL code string to parse.
    3006                If an `Expression` instance is passed, it will be used as-is.
    3007            on: optionally specify the join "on" criteria as a SQL string.
    3008                If an `Expression` instance is passed, it will be used as-is.
    3009            using: optionally specify the join "using" criteria as a SQL string.
    3010                If an `Expression` instance is passed, it will be used as-is.
    3011            append: if `True`, add to any existing expressions.
    3012                Otherwise, this resets the expressions.
    3013            join_type: if set, alter the parsed join type.
    3014            join_alias: an optional alias for the joined source.
    3015            dialect: the dialect used to parse the input expressions.
    3016            copy: if `False`, modify this expression instance in-place.
    3017            opts: other options to use to parse the input expressions.
    3018
    3019        Returns:
    3020            Select: the modified expression.
    3021        """
    3022        parse_args: t.Dict[str, t.Any] = {"dialect": dialect, **opts}
    3023
    3024        try:
    3025            expression = maybe_parse(expression, into=Join, prefix="JOIN", **parse_args)
    3026        except ParseError:
    3027            expression = maybe_parse(expression, into=(Join, Expression), **parse_args)
    3028
    3029        join = expression if isinstance(expression, Join) else Join(this=expression)
    3030
    3031        if isinstance(join.this, Select):
    3032            join.this.replace(join.this.subquery())
    3033
    3034        if join_type:
    3035            method: t.Optional[Token]
    3036            side: t.Optional[Token]
    3037            kind: t.Optional[Token]
    3038
    3039            method, side, kind = maybe_parse(join_type, into="JOIN_TYPE", **parse_args)  # type: ignore
    3040
    3041            if method:
    3042                join.set("method", method.text)
    3043            if side:
    3044                join.set("side", side.text)
    3045            if kind:
    3046                join.set("kind", kind.text)
    3047
    3048        if on:
    3049            on = and_(*ensure_list(on), dialect=dialect, copy=copy, **opts)
    3050            join.set("on", on)
    3051
    3052        if using:
    3053            join = _apply_list_builder(
    3054                *ensure_list(using),
    3055                instance=join,
    3056                arg="using",
    3057                append=append,
    3058                copy=copy,
    3059                into=Identifier,
    3060                **opts,
    3061            )
    3062
    3063        if join_alias:
    3064            join.set("this", alias_(join.this, join_alias, table=True))
    3065
    3066        return _apply_list_builder(
    3067            join,
    3068            instance=self,
    3069            arg="joins",
    3070            append=append,
    3071            copy=copy,
    3072            **opts,
    3073        )
    3074
    3075    def where(
    3076        self,
    3077        *expressions: t.Optional[ExpOrStr],
    3078        append: bool = True,
    3079        dialect: DialectType = None,
    3080        copy: bool = True,
    3081        **opts,
    3082    ) -> Select:
    3083        """
    3084        Append to or set the WHERE expressions.
    3085
    3086        Example:
    3087            >>> Select().select("x").from_("tbl").where("x = 'a' OR x < 'b'").sql()
    3088            "SELECT x FROM tbl WHERE x = 'a' OR x < 'b'"
    3089
    3090        Args:
    3091            *expressions: the SQL code strings to parse.
    3092                If an `Expression` instance is passed, it will be used as-is.
    3093                Multiple expressions are combined with an AND operator.
    3094            append: if `True`, AND the new expressions to any existing expression.
    3095                Otherwise, this resets the expression.
    3096            dialect: the dialect used to parse the input expressions.
    3097            copy: if `False`, modify this expression instance in-place.
    3098            opts: other options to use to parse the input expressions.
    3099
    3100        Returns:
    3101            Select: the modified expression.
    3102        """
    3103        return _apply_conjunction_builder(
    3104            *expressions,
    3105            instance=self,
    3106            arg="where",
    3107            append=append,
    3108            into=Where,
    3109            dialect=dialect,
    3110            copy=copy,
    3111            **opts,
    3112        )
    3113
    3114    def having(
    3115        self,
    3116        *expressions: t.Optional[ExpOrStr],
    3117        append: bool = True,
    3118        dialect: DialectType = None,
    3119        copy: bool = True,
    3120        **opts,
    3121    ) -> Select:
    3122        """
    3123        Append to or set the HAVING expressions.
    3124
    3125        Example:
    3126            >>> Select().select("x", "COUNT(y)").from_("tbl").group_by("x").having("COUNT(y) > 3").sql()
    3127            'SELECT x, COUNT(y) FROM tbl GROUP BY x HAVING COUNT(y) > 3'
    3128
    3129        Args:
    3130            *expressions: the SQL code strings to parse.
    3131                If an `Expression` instance is passed, it will be used as-is.
    3132                Multiple expressions are combined with an AND operator.
    3133            append: if `True`, AND the new expressions to any existing expression.
    3134                Otherwise, this resets the expression.
    3135            dialect: the dialect used to parse the input expressions.
    3136            copy: if `False`, modify this expression instance in-place.
    3137            opts: other options to use to parse the input expressions.
    3138
    3139        Returns:
    3140            The modified Select expression.
    3141        """
    3142        return _apply_conjunction_builder(
    3143            *expressions,
    3144            instance=self,
    3145            arg="having",
    3146            append=append,
    3147            into=Having,
    3148            dialect=dialect,
    3149            copy=copy,
    3150            **opts,
    3151        )
    3152
    3153    def window(
    3154        self,
    3155        *expressions: t.Optional[ExpOrStr],
    3156        append: bool = True,
    3157        dialect: DialectType = None,
    3158        copy: bool = True,
    3159        **opts,
    3160    ) -> Select:
    3161        return _apply_list_builder(
    3162            *expressions,
    3163            instance=self,
    3164            arg="windows",
    3165            append=append,
    3166            into=Window,
    3167            dialect=dialect,
    3168            copy=copy,
    3169            **opts,
    3170        )
    3171
    3172    def qualify(
    3173        self,
    3174        *expressions: t.Optional[ExpOrStr],
    3175        append: bool = True,
    3176        dialect: DialectType = None,
    3177        copy: bool = True,
    3178        **opts,
    3179    ) -> Select:
    3180        return _apply_conjunction_builder(
    3181            *expressions,
    3182            instance=self,
    3183            arg="qualify",
    3184            append=append,
    3185            into=Qualify,
    3186            dialect=dialect,
    3187            copy=copy,
    3188            **opts,
    3189        )
    3190
    3191    def distinct(
    3192        self, *ons: t.Optional[ExpOrStr], distinct: bool = True, copy: bool = True
    3193    ) -> Select:
    3194        """
    3195        Set the OFFSET expression.
    3196
    3197        Example:
    3198            >>> Select().from_("tbl").select("x").distinct().sql()
    3199            'SELECT DISTINCT x FROM tbl'
    3200
    3201        Args:
    3202            ons: the expressions to distinct on
    3203            distinct: whether the Select should be distinct
    3204            copy: if `False`, modify this expression instance in-place.
    3205
    3206        Returns:
    3207            Select: the modified expression.
    3208        """
    3209        instance = maybe_copy(self, copy)
    3210        on = Tuple(expressions=[maybe_parse(on, copy=copy) for on in ons if on]) if ons else None
    3211        instance.set("distinct", Distinct(on=on) if distinct else None)
    3212        return instance
    3213
    3214    def ctas(
    3215        self,
    3216        table: ExpOrStr,
    3217        properties: t.Optional[t.Dict] = None,
    3218        dialect: DialectType = None,
    3219        copy: bool = True,
    3220        **opts,
    3221    ) -> Create:
    3222        """
    3223        Convert this expression to a CREATE TABLE AS statement.
    3224
    3225        Example:
    3226            >>> Select().select("*").from_("tbl").ctas("x").sql()
    3227            'CREATE TABLE x AS SELECT * FROM tbl'
    3228
    3229        Args:
    3230            table: the SQL code string to parse as the table name.
    3231                If another `Expression` instance is passed, it will be used as-is.
    3232            properties: an optional mapping of table properties
    3233            dialect: the dialect used to parse the input table.
    3234            copy: if `False`, modify this expression instance in-place.
    3235            opts: other options to use to parse the input table.
    3236
    3237        Returns:
    3238            The new Create expression.
    3239        """
    3240        instance = maybe_copy(self, copy)
    3241        table_expression = maybe_parse(
    3242            table,
    3243            into=Table,
    3244            dialect=dialect,
    3245            **opts,
    3246        )
    3247        properties_expression = None
    3248        if properties:
    3249            properties_expression = Properties.from_dict(properties)
    3250
    3251        return Create(
    3252            this=table_expression,
    3253            kind="table",
    3254            expression=instance,
    3255            properties=properties_expression,
    3256        )
    3257
    3258    def lock(self, update: bool = True, copy: bool = True) -> Select:
    3259        """
    3260        Set the locking read mode for this expression.
    3261
    3262        Examples:
    3263            >>> Select().select("x").from_("tbl").where("x = 'a'").lock().sql("mysql")
    3264            "SELECT x FROM tbl WHERE x = 'a' FOR UPDATE"
    3265
    3266            >>> Select().select("x").from_("tbl").where("x = 'a'").lock(update=False).sql("mysql")
    3267            "SELECT x FROM tbl WHERE x = 'a' FOR SHARE"
    3268
    3269        Args:
    3270            update: if `True`, the locking type will be `FOR UPDATE`, else it will be `FOR SHARE`.
    3271            copy: if `False`, modify this expression instance in-place.
    3272
    3273        Returns:
    3274            The modified expression.
    3275        """
    3276        inst = maybe_copy(self, copy)
    3277        inst.set("locks", [Lock(update=update)])
    3278
    3279        return inst
    3280
    3281    def hint(self, *hints: ExpOrStr, dialect: DialectType = None, copy: bool = True) -> Select:
    3282        """
    3283        Set hints for this expression.
    3284
    3285        Examples:
    3286            >>> Select().select("x").from_("tbl").hint("BROADCAST(y)").sql(dialect="spark")
    3287            'SELECT /*+ BROADCAST(y) */ x FROM tbl'
    3288
    3289        Args:
    3290            hints: The SQL code strings to parse as the hints.
    3291                If an `Expression` instance is passed, it will be used as-is.
    3292            dialect: The dialect used to parse the hints.
    3293            copy: If `False`, modify this expression instance in-place.
    3294
    3295        Returns:
    3296            The modified expression.
    3297        """
    3298        inst = maybe_copy(self, copy)
    3299        inst.set(
    3300            "hint", Hint(expressions=[maybe_parse(h, copy=copy, dialect=dialect) for h in hints])
    3301        )
    3302
    3303        return inst
    3304
    3305    @property
    3306    def named_selects(self) -> t.List[str]:
    3307        return [e.output_name for e in self.expressions if e.alias_or_name]
    3308
    3309    @property
    3310    def is_star(self) -> bool:
    3311        return any(expression.is_star for expression in self.expressions)
    3312
    3313    @property
    3314    def selects(self) -> t.List[Expression]:
    3315        return self.expressions
    3316
    3317
    3318class Subquery(DerivedTable, Unionable):
    3319    arg_types = {
    3320        "this": True,
    3321        "alias": False,
    3322        "with": False,
    3323        **QUERY_MODIFIERS,
    3324    }
    3325
    3326    def unnest(self):
    3327        """
    3328        Returns the first non subquery.
    3329        """
    3330        expression = self
    3331        while isinstance(expression, Subquery):
    3332            expression = expression.this
    3333        return expression
    3334
    3335    def unwrap(self) -> Subquery:
    3336        expression = self
    3337        while expression.same_parent and expression.is_wrapper:
    3338            expression = t.cast(Subquery, expression.parent)
    3339        return expression
    3340
    3341    @property
    3342    def is_wrapper(self) -> bool:
    3343        """
    3344        Whether this Subquery acts as a simple wrapper around another expression.
    3345
    3346        SELECT * FROM (((SELECT * FROM t)))
    3347                      ^
    3348                      This corresponds to a "wrapper" Subquery node
    3349        """
    3350        return all(v is None for k, v in self.args.items() if k != "this")
    3351
    3352    @property
    3353    def is_star(self) -> bool:
    3354        return self.this.is_star
    3355
    3356    @property
    3357    def output_name(self) -> str:
    3358        return self.alias
    3359
    3360
    3361class TableSample(Expression):
    3362    arg_types = {
    3363        "this": False,
    3364        "expressions": False,
    3365        "method": False,
    3366        "bucket_numerator": False,
    3367        "bucket_denominator": False,
    3368        "bucket_field": False,
    3369        "percent": False,
    3370        "rows": False,
    3371        "size": False,
    3372        "seed": False,
    3373        "kind": False,
    3374    }
    3375
    3376
    3377class Tag(Expression):
    3378    """Tags are used for generating arbitrary sql like SELECT <span>x</span>."""
    3379
    3380    arg_types = {
    3381        "this": False,
    3382        "prefix": False,
    3383        "postfix": False,
    3384    }
    3385
    3386
    3387# Represents both the standard SQL PIVOT operator and DuckDB's "simplified" PIVOT syntax
    3388# https://duckdb.org/docs/sql/statements/pivot
    3389class Pivot(Expression):
    3390    arg_types = {
    3391        "this": False,
    3392        "alias": False,
    3393        "expressions": True,
    3394        "field": False,
    3395        "unpivot": False,
    3396        "using": False,
    3397        "group": False,
    3398        "columns": False,
    3399        "include_nulls": False,
    3400    }
    3401
    3402
    3403class Window(Condition):
    3404    arg_types = {
    3405        "this": True,
    3406        "partition_by": False,
    3407        "order": False,
    3408        "spec": False,
    3409        "alias": False,
    3410        "over": False,
    3411        "first": False,
    3412    }
    3413
    3414
    3415class WindowSpec(Expression):
    3416    arg_types = {
    3417        "kind": False,
    3418        "start": False,
    3419        "start_side": False,
    3420        "end": False,
    3421        "end_side": False,
    3422    }
    3423
    3424
    3425class Where(Expression):
    3426    pass
    3427
    3428
    3429class Star(Expression):
    3430    arg_types = {"except": False, "replace": False}
    3431
    3432    @property
    3433    def name(self) -> str:
    3434        return "*"
    3435
    3436    @property
    3437    def output_name(self) -> str:
    3438        return self.name
    3439
    3440
    3441class Parameter(Condition):
    3442    arg_types = {"this": True, "wrapped": False}
    3443
    3444
    3445class SessionParameter(Condition):
    3446    arg_types = {"this": True, "kind": False}
    3447
    3448
    3449class Placeholder(Condition):
    3450    arg_types = {"this": False, "kind": False}
    3451
    3452
    3453class Null(Condition):
    3454    arg_types: t.Dict[str, t.Any] = {}
    3455
    3456    @property
    3457    def name(self) -> str:
    3458        return "NULL"
    3459
    3460
    3461class Boolean(Condition):
    3462    pass
    3463
    3464
    3465class DataTypeParam(Expression):
    3466    arg_types = {"this": True, "expression": False}
    3467
    3468
    3469class DataType(Expression):
    3470    arg_types = {
    3471        "this": True,
    3472        "expressions": False,
    3473        "nested": False,
    3474        "values": False,
    3475        "prefix": False,
    3476        "kind": False,
    3477    }
    3478
    3479    class Type(AutoName):
    3480        ARRAY = auto()
    3481        BIGDECIMAL = auto()
    3482        BIGINT = auto()
    3483        BIGSERIAL = auto()
    3484        BINARY = auto()
    3485        BIT = auto()
    3486        BOOLEAN = auto()
    3487        CHAR = auto()
    3488        DATE = auto()
    3489        DATEMULTIRANGE = auto()
    3490        DATERANGE = auto()
    3491        DATETIME = auto()
    3492        DATETIME64 = auto()
    3493        DECIMAL = auto()
    3494        DOUBLE = auto()
    3495        ENUM = auto()
    3496        ENUM8 = auto()
    3497        ENUM16 = auto()
    3498        FIXEDSTRING = auto()
    3499        FLOAT = auto()
    3500        GEOGRAPHY = auto()
    3501        GEOMETRY = auto()
    3502        HLLSKETCH = auto()
    3503        HSTORE = auto()
    3504        IMAGE = auto()
    3505        INET = auto()
    3506        INT = auto()
    3507        INT128 = auto()
    3508        INT256 = auto()
    3509        INT4MULTIRANGE = auto()
    3510        INT4RANGE = auto()
    3511        INT8MULTIRANGE = auto()
    3512        INT8RANGE = auto()
    3513        INTERVAL = auto()
    3514        IPADDRESS = auto()
    3515        IPPREFIX = auto()
    3516        JSON = auto()
    3517        JSONB = auto()
    3518        LONGBLOB = auto()
    3519        LONGTEXT = auto()
    3520        LOWCARDINALITY = auto()
    3521        MAP = auto()
    3522        MEDIUMBLOB = auto()
    3523        MEDIUMINT = auto()
    3524        MEDIUMTEXT = auto()
    3525        MONEY = auto()
    3526        NCHAR = auto()
    3527        NESTED = auto()
    3528        NULL = auto()
    3529        NULLABLE = auto()
    3530        NUMMULTIRANGE = auto()
    3531        NUMRANGE = auto()
    3532        NVARCHAR = auto()
    3533        OBJECT = auto()
    3534        ROWVERSION = auto()
    3535        SERIAL = auto()
    3536        SET = auto()
    3537        SMALLINT = auto()
    3538        SMALLMONEY = auto()
    3539        SMALLSERIAL = auto()
    3540        STRUCT = auto()
    3541        SUPER = auto()
    3542        TEXT = auto()
    3543        TINYBLOB = auto()
    3544        TINYTEXT = auto()
    3545        TIME = auto()
    3546        TIMETZ = auto()
    3547        TIMESTAMP = auto()
    3548        TIMESTAMPLTZ = auto()
    3549        TIMESTAMPTZ = auto()
    3550        TINYINT = auto()
    3551        TSMULTIRANGE = auto()
    3552        TSRANGE = auto()
    3553        TSTZMULTIRANGE = auto()
    3554        TSTZRANGE = auto()
    3555        UBIGINT = auto()
    3556        UINT = auto()
    3557        UINT128 = auto()
    3558        UINT256 = auto()
    3559        UMEDIUMINT = auto()
    3560        UNIQUEIDENTIFIER = auto()
    3561        UNKNOWN = auto()  # Sentinel value, useful for type annotation
    3562        USERDEFINED = "USER-DEFINED"
    3563        USMALLINT = auto()
    3564        UTINYINT = auto()
    3565        UUID = auto()
    3566        VARBINARY = auto()
    3567        VARCHAR = auto()
    3568        VARIANT = auto()
    3569        XML = auto()
    3570        YEAR = auto()
    3571
    3572    TEXT_TYPES = {
    3573        Type.CHAR,
    3574        Type.NCHAR,
    3575        Type.VARCHAR,
    3576        Type.NVARCHAR,
    3577        Type.TEXT,
    3578    }
    3579
    3580    INTEGER_TYPES = {
    3581        Type.INT,
    3582        Type.TINYINT,
    3583        Type.SMALLINT,
    3584        Type.BIGINT,
    3585        Type.INT128,
    3586        Type.INT256,
    3587    }
    3588
    3589    FLOAT_TYPES = {
    3590        Type.FLOAT,
    3591        Type.DOUBLE,
    3592    }
    3593
    3594    NUMERIC_TYPES = {
    3595        *INTEGER_TYPES,
    3596        *FLOAT_TYPES,
    3597    }
    3598
    3599    TEMPORAL_TYPES = {
    3600        Type.TIME,
    3601        Type.TIMETZ,
    3602        Type.TIMESTAMP,
    3603        Type.TIMESTAMPTZ,
    3604        Type.TIMESTAMPLTZ,
    3605        Type.DATE,
    3606        Type.DATETIME,
    3607        Type.DATETIME64,
    3608    }
    3609
    3610    @classmethod
    3611    def build(
    3612        cls,
    3613        dtype: str | DataType | DataType.Type,
    3614        dialect: DialectType = None,
    3615        udt: bool = False,
    3616        **kwargs,
    3617    ) -> DataType:
    3618        """
    3619        Constructs a DataType object.
    3620
    3621        Args:
    3622            dtype: the data type of interest.
    3623            dialect: the dialect to use for parsing `dtype`, in case it's a string.
    3624            udt: when set to True, `dtype` will be used as-is if it can't be parsed into a
    3625                DataType, thus creating a user-defined type.
    3626            kawrgs: additional arguments to pass in the constructor of DataType.
    3627
    3628        Returns:
    3629            The constructed DataType object.
    3630        """
    3631        from sqlglot import parse_one
    3632
    3633        if isinstance(dtype, str):
    3634            if dtype.upper() == "UNKNOWN":
    3635                return DataType(this=DataType.Type.UNKNOWN, **kwargs)
    3636
    3637            try:
    3638                data_type_exp = parse_one(dtype, read=dialect, into=DataType)
    3639            except ParseError:
    3640                if udt:
    3641                    return DataType(this=DataType.Type.USERDEFINED, kind=dtype, **kwargs)
    3642                raise
    3643        elif isinstance(dtype, DataType.Type):
    3644            data_type_exp = DataType(this=dtype)
    3645        elif isinstance(dtype, DataType):
    3646            return dtype
    3647        else:
    3648            raise ValueError(f"Invalid data type: {type(dtype)}. Expected str or DataType.Type")
    3649
    3650        return DataType(**{**data_type_exp.args, **kwargs})
    3651
    3652    def is_type(self, *dtypes: str | DataType | DataType.Type) -> bool:
    3653        """
    3654        Checks whether this DataType matches one of the provided data types. Nested types or precision
    3655        will be compared using "structural equivalence" semantics, so e.g. array<int> != array<float>.
    3656
    3657        Args:
    3658            dtypes: the data types to compare this DataType to.
    3659
    3660        Returns:
    3661            True, if and only if there is a type in `dtypes` which is equal to this DataType.
    3662        """
    3663        for dtype in dtypes:
    3664            other = DataType.build(dtype, udt=True)
    3665
    3666            if (
    3667                other.expressions
    3668                or self.this == DataType.Type.USERDEFINED
    3669                or other.this == DataType.Type.USERDEFINED
    3670            ):
    3671                matches = self == other
    3672            else:
    3673                matches = self.this == other.this
    3674
    3675            if matches:
    3676                return True
    3677        return False
    3678
    3679
    3680# https://www.postgresql.org/docs/15/datatype-pseudo.html
    3681class PseudoType(Expression):
    3682    pass
    3683
    3684
    3685# https://www.postgresql.org/docs/15/datatype-oid.html
    3686class ObjectIdentifier(Expression):
    3687    pass
    3688
    3689
    3690# WHERE x <OP> EXISTS|ALL|ANY|SOME(SELECT ...)
    3691class SubqueryPredicate(Predicate):
    3692    pass
    3693
    3694
    3695class All(SubqueryPredicate):
    3696    pass
    3697
    3698
    3699class Any(SubqueryPredicate):
    3700    pass
    3701
    3702
    3703class Exists(SubqueryPredicate):
    3704    pass
    3705
    3706
    3707# Commands to interact with the databases or engines. For most of the command
    3708# expressions we parse whatever comes after the command's name as a string.
    3709class Command(Expression):
    3710    arg_types = {"this": True, "expression": False}
    3711
    3712
    3713class Transaction(Expression):
    3714    arg_types = {"this": False, "modes": False, "mark": False}
    3715
    3716
    3717class Commit(Expression):
    3718    arg_types = {"chain": False, "this": False, "durability": False}
    3719
    3720
    3721class Rollback(Expression):
    3722    arg_types = {"savepoint": False, "this": False}
    3723
    3724
    3725class AlterTable(Expression):
    3726    arg_types = {"this": True, "actions": True, "exists": False, "only": False}
    3727
    3728
    3729class AddConstraint(Expression):
    3730    arg_types = {"this": False, "expression": False, "enforced": False}
    3731
    3732
    3733class DropPartition(Expression):
    3734    arg_types = {"expressions": True, "exists": False}
    3735
    3736
    3737# Binary expressions like (ADD a b)
    3738class Binary(Condition):
    3739    arg_types = {"this": True, "expression": True}
    3740
    3741    @property
    3742    def left(self):
    3743        return self.this
    3744
    3745    @property
    3746    def right(self):
    3747        return self.expression
    3748
    3749
    3750class Add(Binary):
    3751    pass
    3752
    3753
    3754class Connector(Binary):
    3755    pass
    3756
    3757
    3758class And(Connector):
    3759    pass
    3760
    3761
    3762class Or(Connector):
    3763    pass
    3764
    3765
    3766class BitwiseAnd(Binary):
    3767    pass
    3768
    3769
    3770class BitwiseLeftShift(Binary):
    3771    pass
    3772
    3773
    3774class BitwiseOr(Binary):
    3775    pass
    3776
    3777
    3778class BitwiseRightShift(Binary):
    3779    pass
    3780
    3781
    3782class BitwiseXor(Binary):
    3783    pass
    3784
    3785
    3786class Div(Binary):
    3787    pass
    3788
    3789
    3790class Overlaps(Binary):
    3791    pass
    3792
    3793
    3794class Dot(Binary):
    3795    @property
    3796    def name(self) -> str:
    3797        return self.expression.name
    3798
    3799    @property
    3800    def output_name(self) -> str:
    3801        return self.name
    3802
    3803    @classmethod
    3804    def build(self, expressions: t.Sequence[Expression]) -> Dot:
    3805        """Build a Dot object with a sequence of expressions."""
    3806        if len(expressions) < 2:
    3807            raise ValueError(f"Dot requires >= 2 expressions.")
    3808
    3809        return t.cast(Dot, reduce(lambda x, y: Dot(this=x, expression=y), expressions))
    3810
    3811
    3812class DPipe(Binary):
    3813    pass
    3814
    3815
    3816class SafeDPipe(DPipe):
    3817    pass
    3818
    3819
    3820class EQ(Binary, Predicate):
    3821    pass
    3822
    3823
    3824class NullSafeEQ(Binary, Predicate):
    3825    pass
    3826
    3827
    3828class NullSafeNEQ(Binary, Predicate):
    3829    pass
    3830
    3831
    3832class Distance(Binary):
    3833    pass
    3834
    3835
    3836class Escape(Binary):
    3837    pass
    3838
    3839
    3840class Glob(Binary, Predicate):
    3841    pass
    3842
    3843
    3844class GT(Binary, Predicate):
    3845    pass
    3846
    3847
    3848class GTE(Binary, Predicate):
    3849    pass
    3850
    3851
    3852class ILike(Binary, Predicate):
    3853    pass
    3854
    3855
    3856class ILikeAny(Binary, Predicate):
    3857    pass
    3858
    3859
    3860class IntDiv(Binary):
    3861    pass
    3862
    3863
    3864class Is(Binary, Predicate):
    3865    pass
    3866
    3867
    3868class Kwarg(Binary):
    3869    """Kwarg in special functions like func(kwarg => y)."""
    3870
    3871
    3872class Like(Binary, Predicate):
    3873    pass
    3874
    3875
    3876class LikeAny(Binary, Predicate):
    3877    pass
    3878
    3879
    3880class LT(Binary, Predicate):
    3881    pass
    3882
    3883
    3884class LTE(Binary, Predicate):
    3885    pass
    3886
    3887
    3888class Mod(Binary):
    3889    pass
    3890
    3891
    3892class Mul(Binary):
    3893    pass
    3894
    3895
    3896class NEQ(Binary, Predicate):
    3897    pass
    3898
    3899
    3900class SimilarTo(Binary, Predicate):
    3901    pass
    3902
    3903
    3904class Slice(Binary):
    3905    arg_types = {"this": False, "expression": False}
    3906
    3907
    3908class Sub(Binary):
    3909    pass
    3910
    3911
    3912class ArrayOverlaps(Binary):
    3913    pass
    3914
    3915
    3916# Unary Expressions
    3917# (NOT a)
    3918class Unary(Condition):
    3919    pass
    3920
    3921
    3922class BitwiseNot(Unary):
    3923    pass
    3924
    3925
    3926class Not(Unary):
    3927    pass
    3928
    3929
    3930class Paren(Unary):
    3931    arg_types = {"this": True, "with": False}
    3932
    3933    @property
    3934    def output_name(self) -> str:
    3935        return self.this.name
    3936
    3937
    3938class Neg(Unary):
    3939    pass
    3940
    3941
    3942class Alias(Expression):
    3943    arg_types = {"this": True, "alias": False}
    3944
    3945    @property
    3946    def output_name(self) -> str:
    3947        return self.alias
    3948
    3949
    3950class Aliases(Expression):
    3951    arg_types = {"this": True, "expressions": True}
    3952
    3953    @property
    3954    def aliases(self):
    3955        return self.expressions
    3956
    3957
    3958class AtTimeZone(Expression):
    3959    arg_types = {"this": True, "zone": True}
    3960
    3961
    3962class Between(Predicate):
    3963    arg_types = {"this": True, "low": True, "high": True}
    3964
    3965
    3966class Bracket(Condition):
    3967    arg_types = {"this": True, "expressions": True}
    3968
    3969    @property
    3970    def output_name(self) -> str:
    3971        if len(self.expressions) == 1:
    3972            return self.expressions[0].output_name
    3973
    3974        return super().output_name
    3975
    3976
    3977class SafeBracket(Bracket):
    3978    """Represents array lookup where OOB index yields NULL instead of causing a failure."""
    3979
    3980
    3981class Distinct(Expression):
    3982    arg_types = {"expressions": False, "on": False}
    3983
    3984
    3985class In(Predicate):
    3986    arg_types = {
    3987        "this": True,
    3988        "expressions": False,
    3989        "query": False,
    3990        "unnest": False,
    3991        "field": False,
    3992        "is_global": False,
    3993    }
    3994
    3995
    3996class TimeUnit(Expression):
    3997    """Automatically converts unit arg into a var."""
    3998
    3999    arg_types = {"unit": False}
    4000
    4001    def __init__(self, **args):
    4002        unit = args.get("unit")
    4003        if isinstance(unit, (Column, Literal)):
    4004            args["unit"] = Var(this=unit.name)
    4005        elif isinstance(unit, Week):
    4006            unit.set("this", Var(this=unit.this.name))
    4007
    4008        super().__init__(**args)
    4009
    4010
    4011# https://www.oracletutorial.com/oracle-basics/oracle-interval/
    4012# https://trino.io/docs/current/language/types.html#interval-day-to-second
    4013# https://docs.databricks.com/en/sql/language-manual/data-types/interval-type.html
    4014class IntervalSpan(Expression):
    4015    arg_types = {"this": True, "expression": True}
    4016
    4017
    4018class Interval(TimeUnit):
    4019    arg_types = {"this": False, "unit": False}
    4020
    4021    @property
    4022    def unit(self) -> t.Optional[Var]:
    4023        return self.args.get("unit")
    4024
    4025
    4026class IgnoreNulls(Expression):
    4027    pass
    4028
    4029
    4030class RespectNulls(Expression):
    4031    pass
    4032
    4033
    4034# Functions
    4035class Func(Condition):
    4036    """
    4037    The base class for all function expressions.
    4038
    4039    Attributes:
    4040        is_var_len_args (bool): if set to True the last argument defined in arg_types will be
    4041            treated as a variable length argument and the argument's value will be stored as a list.
    4042        _sql_names (list): determines the SQL name (1st item in the list) and aliases (subsequent items)
    4043            for this function expression. These values are used to map this node to a name during parsing
    4044            as well as to provide the function's name during SQL string generation. By default the SQL
    4045            name is set to the expression's class name transformed to snake case.
    4046    """
    4047
    4048    is_var_len_args = False
    4049
    4050    @classmethod
    4051    def from_arg_list(cls, args):
    4052        if cls.is_var_len_args:
    4053            all_arg_keys = list(cls.arg_types)
    4054            # If this function supports variable length argument treat the last argument as such.
    4055            non_var_len_arg_keys = all_arg_keys[:-1] if cls.is_var_len_args else all_arg_keys
    4056            num_non_var = len(non_var_len_arg_keys)
    4057
    4058            args_dict = {arg_key: arg for arg, arg_key in zip(args, non_var_len_arg_keys)}
    4059            args_dict[all_arg_keys[-1]] = args[num_non_var:]
    4060        else:
    4061            args_dict = {arg_key: arg for arg, arg_key in zip(args, cls.arg_types)}
    4062
    4063        return cls(**args_dict)
    4064
    4065    @classmethod
    4066    def sql_names(cls):
    4067        if cls is Func:
    4068            raise NotImplementedError(
    4069                "SQL name is only supported by concrete function implementations"
    4070            )
    4071        if "_sql_names" not in cls.__dict__:
    4072            cls._sql_names = [camel_to_snake_case(cls.__name__)]
    4073        return cls._sql_names
    4074
    4075    @classmethod
    4076    def sql_name(cls):
    4077        return cls.sql_names()[0]
    4078
    4079    @classmethod
    4080    def default_parser_mappings(cls):
    4081        return {name: cls.from_arg_list for name in cls.sql_names()}
    4082
    4083
    4084class AggFunc(Func):
    4085    pass
    4086
    4087
    4088class ParameterizedAgg(AggFunc):
    4089    arg_types = {"this": True, "expressions": True, "params": True}
    4090
    4091
    4092class Abs(Func):
    4093    pass
    4094
    4095
    4096# https://spark.apache.org/docs/latest/api/sql/index.html#transform
    4097class Transform(Func):
    4098    arg_types = {"this": True, "expression": True}
    4099
    4100
    4101class Anonymous(Func):
    4102    arg_types = {"this": True, "expressions": False}
    4103    is_var_len_args = True
    4104
    4105
    4106# https://docs.snowflake.com/en/sql-reference/functions/hll
    4107# https://docs.aws.amazon.com/redshift/latest/dg/r_HLL_function.html
    4108class Hll(AggFunc):
    4109    arg_types = {"this": True, "expressions": False}
    4110    is_var_len_args = True
    4111
    4112
    4113class ApproxDistinct(AggFunc):
    4114    arg_types = {"this": True, "accuracy": False}
    4115    _sql_names = ["APPROX_DISTINCT", "APPROX_COUNT_DISTINCT"]
    4116
    4117
    4118class Array(Func):
    4119    arg_types = {"expressions": False}
    4120    is_var_len_args = True
    4121
    4122
    4123# https://docs.snowflake.com/en/sql-reference/functions/to_char
    4124class ToChar(Func):
    4125    arg_types = {"this": True, "format": False}
    4126
    4127
    4128class GenerateSeries(Func):
    4129    arg_types = {"start": True, "end": True, "step": False}
    4130
    4131
    4132class ArrayAgg(AggFunc):
    4133    pass
    4134
    4135
    4136class ArrayAll(Func):
    4137    arg_types = {"this": True, "expression": True}
    4138
    4139
    4140class ArrayAny(Func):
    4141    arg_types = {"this": True, "expression": True}
    4142
    4143
    4144class ArrayConcat(Func):
    4145    _sql_names = ["ARRAY_CONCAT", "ARRAY_CAT"]
    4146    arg_types = {"this": True, "expressions": False}
    4147    is_var_len_args = True
    4148
    4149
    4150class ArrayContains(Binary, Func):
    4151    pass
    4152
    4153
    4154class ArrayContained(Binary):
    4155    pass
    4156
    4157
    4158class ArrayFilter(Func):
    4159    arg_types = {"this": True, "expression": True}
    4160    _sql_names = ["FILTER", "ARRAY_FILTER"]
    4161
    4162
    4163class ArrayJoin(Func):
    4164    arg_types = {"this": True, "expression": True, "null": False}
    4165
    4166
    4167class ArraySize(Func):
    4168    arg_types = {"this": True, "expression": False}
    4169
    4170
    4171class ArraySort(Func):
    4172    arg_types = {"this": True, "expression": False}
    4173
    4174
    4175class ArraySum(Func):
    4176    pass
    4177
    4178
    4179class ArrayUnionAgg(AggFunc):
    4180    pass
    4181
    4182
    4183class Avg(AggFunc):
    4184    pass
    4185
    4186
    4187class AnyValue(AggFunc):
    4188    arg_types = {"this": True, "having": False, "max": False, "ignore_nulls": False}
    4189
    4190
    4191class First(Func):
    4192    arg_types = {"this": True, "ignore_nulls": False}
    4193
    4194
    4195class Last(Func):
    4196    arg_types = {"this": True, "ignore_nulls": False}
    4197
    4198
    4199class Case(Func):
    4200    arg_types = {"this": False, "ifs": True, "default": False}
    4201
    4202    def when(self, condition: ExpOrStr, then: ExpOrStr, copy: bool = True, **opts) -> Case:
    4203        instance = maybe_copy(self, copy)
    4204        instance.append(
    4205            "ifs",
    4206            If(
    4207                this=maybe_parse(condition, copy=copy, **opts),
    4208                true=maybe_parse(then, copy=copy, **opts),
    4209            ),
    4210        )
    4211        return instance
    4212
    4213    def else_(self, condition: ExpOrStr, copy: bool = True, **opts) -> Case:
    4214        instance = maybe_copy(self, copy)
    4215        instance.set("default", maybe_parse(condition, copy=copy, **opts))
    4216        return instance
    4217
    4218
    4219class Cast(Func):
    4220    arg_types = {"this": True, "to": True, "format": False}
    4221
    4222    @property
    4223    def name(self) -> str:
    4224        return self.this.name
    4225
    4226    @property
    4227    def to(self) -> DataType:
    4228        return self.args["to"]
    4229
    4230    @property
    4231    def output_name(self) -> str:
    4232        return self.name
    4233
    4234    def is_type(self, *dtypes: str | DataType | DataType.Type) -> bool:
    4235        """
    4236        Checks whether this Cast's DataType matches one of the provided data types. Nested types
    4237        like arrays or structs will be compared using "structural equivalence" semantics, so e.g.
    4238        array<int> != array<float>.
    4239
    4240        Args:
    4241            dtypes: the data types to compare this Cast's DataType to.
    4242
    4243        Returns:
    4244            True, if and only if there is a type in `dtypes` which is equal to this Cast's DataType.
    4245        """
    4246        return self.to.is_type(*dtypes)
    4247
    4248
    4249class TryCast(Cast):
    4250    pass
    4251
    4252
    4253class CastToStrType(Func):
    4254    arg_types = {"this": True, "to": True}
    4255
    4256
    4257class Collate(Binary):
    4258    pass
    4259
    4260
    4261class Ceil(Func):
    4262    arg_types = {"this": True, "decimals": False}
    4263    _sql_names = ["CEIL", "CEILING"]
    4264
    4265
    4266class Coalesce(Func):
    4267    arg_types = {"this": True, "expressions": False}
    4268    is_var_len_args = True
    4269    _sql_names = ["COALESCE", "IFNULL", "NVL"]
    4270
    4271
    4272class Concat(Func):
    4273    arg_types = {"expressions": True}
    4274    is_var_len_args = True
    4275
    4276
    4277class SafeConcat(Concat):
    4278    pass
    4279
    4280
    4281class ConcatWs(Concat):
    4282    _sql_names = ["CONCAT_WS"]
    4283
    4284
    4285class Count(AggFunc):
    4286    arg_types = {"this": False, "expressions": False}
    4287    is_var_len_args = True
    4288
    4289
    4290class CountIf(AggFunc):
    4291    pass
    4292
    4293
    4294class CurrentDate(Func):
    4295    arg_types = {"this": False}
    4296
    4297
    4298class CurrentDatetime(Func):
    4299    arg_types = {"this": False}
    4300
    4301
    4302class CurrentTime(Func):
    4303    arg_types = {"this": False}
    4304
    4305
    4306class CurrentTimestamp(Func):
    4307    arg_types = {"this": False}
    4308
    4309
    4310class CurrentUser(Func):
    4311    arg_types = {"this": False}
    4312
    4313
    4314class DateAdd(Func, TimeUnit):
    4315    arg_types = {"this": True, "expression": True, "unit": False}
    4316
    4317
    4318class DateSub(Func, TimeUnit):
    4319    arg_types = {"this": True, "expression": True, "unit": False}
    4320
    4321
    4322class DateDiff(Func, TimeUnit):
    4323    _sql_names = ["DATEDIFF", "DATE_DIFF"]
    4324    arg_types = {"this": True, "expression": True, "unit": False}
    4325
    4326
    4327class DateTrunc(Func):
    4328    arg_types = {"unit": True, "this": True, "zone": False}
    4329
    4330
    4331class DatetimeAdd(Func, TimeUnit):
    4332    arg_types = {"this": True, "expression": True, "unit": False}
    4333
    4334
    4335class DatetimeSub(Func, TimeUnit):
    4336    arg_types = {"this": True, "expression": True, "unit": False}
    4337
    4338
    4339class DatetimeDiff(Func, TimeUnit):
    4340    arg_types = {"this": True, "expression": True, "unit": False}
    4341
    4342
    4343class DatetimeTrunc(Func, TimeUnit):
    4344    arg_types = {"this": True, "unit": True, "zone": False}
    4345
    4346
    4347class DayOfWeek(Func):
    4348    _sql_names = ["DAY_OF_WEEK", "DAYOFWEEK"]
    4349
    4350
    4351class DayOfMonth(Func):
    4352    _sql_names = ["DAY_OF_MONTH", "DAYOFMONTH"]
    4353
    4354
    4355class DayOfYear(Func):
    4356    _sql_names = ["DAY_OF_YEAR", "DAYOFYEAR"]
    4357
    4358
    4359class WeekOfYear(Func):
    4360    _sql_names = ["WEEK_OF_YEAR", "WEEKOFYEAR"]
    4361
    4362
    4363class MonthsBetween(Func):
    4364    arg_types = {"this": True, "expression": True, "roundoff": False}
    4365
    4366
    4367class LastDateOfMonth(Func):
    4368    pass
    4369
    4370
    4371class Extract(Func):
    4372    arg_types = {"this": True, "expression": True}
    4373
    4374
    4375class TimestampAdd(Func, TimeUnit):
    4376    arg_types = {"this": True, "expression": True, "unit": False}
    4377
    4378
    4379class TimestampSub(Func, TimeUnit):
    4380    arg_types = {"this": True, "expression": True, "unit": False}
    4381
    4382
    4383class TimestampDiff(Func, TimeUnit):
    4384    arg_types = {"this": True, "expression": True, "unit": False}
    4385
    4386
    4387class TimestampTrunc(Func, TimeUnit):
    4388    arg_types = {"this": True, "unit": True, "zone": False}
    4389
    4390
    4391class TimeAdd(Func, TimeUnit):
    4392    arg_types = {"this": True, "expression": True, "unit": False}
    4393
    4394
    4395class TimeSub(Func, TimeUnit):
    4396    arg_types = {"this": True, "expression": True, "unit": False}
    4397
    4398
    4399class TimeDiff(Func, TimeUnit):
    4400    arg_types = {"this": True, "expression": True, "unit": False}
    4401
    4402
    4403class TimeTrunc(Func, TimeUnit):
    4404    arg_types = {"this": True, "unit": True, "zone": False}
    4405
    4406
    4407class DateFromParts(Func):
    4408    _sql_names = ["DATEFROMPARTS"]
    4409    arg_types = {"year": True, "month": True, "day": True}
    4410
    4411
    4412class DateStrToDate(Func):
    4413    pass
    4414
    4415
    4416class DateToDateStr(Func):
    4417    pass
    4418
    4419
    4420class DateToDi(Func):
    4421    pass
    4422
    4423
    4424# https://cloud.google.com/bigquery/docs/reference/standard-sql/date_functions#date
    4425class Date(Func):
    4426    arg_types = {"this": True, "zone": False}
    4427
    4428
    4429class Day(Func):
    4430    pass
    4431
    4432
    4433class Decode(Func):
    4434    arg_types = {"this": True, "charset": True, "replace": False}
    4435
    4436
    4437class DiToDate(Func):
    4438    pass
    4439
    4440
    4441class Encode(Func):
    4442    arg_types = {"this": True, "charset": True}
    4443
    4444
    4445class Exp(Func):
    4446    pass
    4447
    4448
    4449class Explode(Func):
    4450    pass
    4451
    4452
    4453class Floor(Func):
    4454    arg_types = {"this": True, "decimals": False}
    4455
    4456
    4457class FromBase64(Func):
    4458    pass
    4459
    4460
    4461class ToBase64(Func):
    4462    pass
    4463
    4464
    4465class Greatest(Func):
    4466    arg_types = {"this": True, "expressions": False}
    4467    is_var_len_args = True
    4468
    4469
    4470class GroupConcat(AggFunc):
    4471    arg_types = {"this": True, "separator": False}
    4472
    4473
    4474class Hex(Func):
    4475    pass
    4476
    4477
    4478class Xor(Connector, Func):
    4479    arg_types = {"this": False, "expression": False, "expressions": False}
    4480
    4481
    4482class If(Func):
    4483    arg_types = {"this": True, "true": True, "false": False}
    4484
    4485
    4486class Initcap(Func):
    4487    arg_types = {"this": True, "expression": False}
    4488
    4489
    4490class IsNan(Func):
    4491    _sql_names = ["IS_NAN", "ISNAN"]
    4492
    4493
    4494class FormatJson(Expression):
    4495    pass
    4496
    4497
    4498class JSONKeyValue(Expression):
    4499    arg_types = {"this": True, "expression": True}
    4500
    4501
    4502class JSONObject(Func):
    4503    arg_types = {
    4504        "expressions": False,
    4505        "null_handling": False,
    4506        "unique_keys": False,
    4507        "return_type": False,
    4508        "encoding": False,
    4509    }
    4510
    4511
    4512# https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/JSON_ARRAY.html
    4513class JSONArray(Func):
    4514    arg_types = {
    4515        "expressions": True,
    4516        "null_handling": False,
    4517        "return_type": False,
    4518        "strict": False,
    4519    }
    4520
    4521
    4522# https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/JSON_ARRAYAGG.html
    4523class JSONArrayAgg(Func):
    4524    arg_types = {
    4525        "this": True,
    4526        "order": False,
    4527        "null_handling": False,
    4528        "return_type": False,
    4529        "strict": False,
    4530    }
    4531
    4532
    4533# https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/JSON_TABLE.html
    4534# Note: parsing of JSON column definitions is currently incomplete.
    4535class JSONColumnDef(Expression):
    4536    arg_types = {"this": True, "kind": False, "path": False}
    4537
    4538
    4539# # https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/JSON_TABLE.html
    4540class JSONTable(Func):
    4541    arg_types = {
    4542        "this": True,
    4543        "expressions": True,
    4544        "path": False,
    4545        "error_handling": False,
    4546        "empty_handling": False,
    4547    }
    4548
    4549
    4550class OpenJSONColumnDef(Expression):
    4551    arg_types = {"this": True, "kind": True, "path": False, "as_json": False}
    4552
    4553
    4554class OpenJSON(Func):
    4555    arg_types = {"this": True, "path": False, "expressions": False}
    4556
    4557
    4558class JSONBContains(Binary):
    4559    _sql_names = ["JSONB_CONTAINS"]
    4560
    4561
    4562class JSONExtract(Binary, Func):
    4563    _sql_names = ["JSON_EXTRACT"]
    4564
    4565
    4566class JSONExtractScalar(JSONExtract):
    4567    _sql_names = ["JSON_EXTRACT_SCALAR"]
    4568
    4569
    4570class JSONBExtract(JSONExtract):
    4571    _sql_names = ["JSONB_EXTRACT"]
    4572
    4573
    4574class JSONBExtractScalar(JSONExtract):
    4575    _sql_names = ["JSONB_EXTRACT_SCALAR"]
    4576
    4577
    4578class JSONFormat(Func):
    4579    arg_types = {"this": False, "options": False}
    4580    _sql_names = ["JSON_FORMAT"]
    4581
    4582
    4583# https://dev.mysql.com/doc/refman/8.0/en/json-search-functions.html#operator_member-of
    4584class JSONArrayContains(Binary, Predicate, Func):
    4585    _sql_names = ["JSON_ARRAY_CONTAINS"]
    4586
    4587
    4588class Least(Func):
    4589    arg_types = {"this": True, "expressions": False}
    4590    is_var_len_args = True
    4591
    4592
    4593class Left(Func):
    4594    arg_types = {"this": True, "expression": True}
    4595
    4596
    4597class Right(Func):
    4598    arg_types = {"this": True, "expression": True}
    4599
    4600
    4601class Length(Func):
    4602    _sql_names = ["LENGTH", "LEN"]
    4603
    4604
    4605class Levenshtein(Func):
    4606    arg_types = {
    4607        "this": True,
    4608        "expression": False,
    4609        "ins_cost": False,
    4610        "del_cost": False,
    4611        "sub_cost": False,
    4612    }
    4613
    4614
    4615class Ln(Func):
    4616    pass
    4617
    4618
    4619class Log(Func):
    4620    arg_types = {"this": True, "expression": False}
    4621
    4622
    4623class Log2(Func):
    4624    pass
    4625
    4626
    4627class Log10(Func):
    4628    pass
    4629
    4630
    4631class LogicalOr(AggFunc):
    4632    _sql_names = ["LOGICAL_OR", "BOOL_OR", "BOOLOR_AGG"]
    4633
    4634
    4635class LogicalAnd(AggFunc):
    4636    _sql_names = ["LOGICAL_AND", "BOOL_AND", "BOOLAND_AGG"]
    4637
    4638
    4639class Lower(Func):
    4640    _sql_names = ["LOWER", "LCASE"]
    4641
    4642
    4643class Map(Func):
    4644    arg_types = {"keys": False, "values": False}
    4645
    4646
    4647class MapFromEntries(Func):
    4648    pass
    4649
    4650
    4651class StarMap(Func):
    4652    pass
    4653
    4654
    4655class VarMap(Func):
    4656    arg_types = {"keys": True, "values": True}
    4657    is_var_len_args = True
    4658
    4659    @property
    4660    def keys(self) -> t.List[Expression]:
    4661        return self.args["keys"].expressions
    4662
    4663    @property
    4664    def values(self) -> t.List[Expression]:
    4665        return self.args["values"].expressions
    4666
    4667
    4668# https://dev.mysql.com/doc/refman/8.0/en/fulltext-search.html
    4669class MatchAgainst(Func):
    4670    arg_types = {"this": True, "expressions": True, "modifier": False}
    4671
    4672
    4673class Max(AggFunc):
    4674    arg_types = {"this": True, "expressions": False}
    4675    is_var_len_args = True
    4676
    4677
    4678class MD5(Func):
    4679    _sql_names = ["MD5"]
    4680
    4681
    4682# Represents the variant of the MD5 function that returns a binary value
    4683class MD5Digest(Func):
    4684    _sql_names = ["MD5_DIGEST"]
    4685
    4686
    4687class Min(AggFunc):
    4688    arg_types = {"this": True, "expressions": False}
    4689    is_var_len_args = True
    4690
    4691
    4692class Month(Func):
    4693    pass
    4694
    4695
    4696class Nvl2(Func):
    4697    arg_types = {"this": True, "true": True, "false": False}
    4698
    4699
    4700class Posexplode(Func):
    4701    pass
    4702
    4703
    4704class Pow(Binary, Func):
    4705    _sql_names = ["POWER", "POW"]
    4706
    4707
    4708class PercentileCont(AggFunc):
    4709    arg_types = {"this": True, "expression": False}
    4710
    4711
    4712class PercentileDisc(AggFunc):
    4713    arg_types = {"this": True, "expression": False}
    4714
    4715
    4716class Quantile(AggFunc):
    4717    arg_types = {"this": True, "quantile": True}
    4718
    4719
    4720class ApproxQuantile(Quantile):
    4721    arg_types = {"this": True, "quantile": True, "accuracy": False, "weight": False}
    4722
    4723
    4724class RangeN(Func):
    4725    arg_types = {"this": True, "expressions": True, "each": False}
    4726
    4727
    4728class ReadCSV(Func):
    4729    _sql_names = ["READ_CSV"]
    4730    is_var_len_args = True
    4731    arg_types = {"this": True, "expressions": False}
    4732
    4733
    4734class Reduce(Func):
    4735    arg_types = {"this": True, "initial": True, "merge": True, "finish": False}
    4736
    4737
    4738class RegexpExtract(Func):
    4739    arg_types = {
    4740        "this": True,
    4741        "expression": True,
    4742        "position": False,
    4743        "occurrence": False,
    4744        "parameters": False,
    4745        "group": False,
    4746    }
    4747
    4748
    4749class RegexpReplace(Func):
    4750    arg_types = {
    4751        "this": True,
    4752        "expression": True,
    4753        "replacement": True,
    4754        "position": False,
    4755        "occurrence": False,
    4756        "parameters": False,
    4757    }
    4758
    4759
    4760class RegexpLike(Binary, Func):
    4761    arg_types = {"this": True, "expression": True, "flag": False}
    4762
    4763
    4764class RegexpILike(Func):
    4765    arg_types = {"this": True, "expression": True, "flag": False}
    4766
    4767
    4768# https://spark.apache.org/docs/latest/api/python/reference/pyspark.sql/api/pyspark.sql.functions.split.html
    4769# limit is the number of times a pattern is applied
    4770class RegexpSplit(Func):
    4771    arg_types = {"this": True, "expression": True, "limit": False}
    4772
    4773
    4774class Repeat(Func):
    4775    arg_types = {"this": True, "times": True}
    4776
    4777
    4778class Round(Func):
    4779    arg_types = {"this": True, "decimals": False}
    4780
    4781
    4782class RowNumber(Func):
    4783    arg_types: t.Dict[str, t.Any] = {}
    4784
    4785
    4786class SafeDivide(Func):
    4787    arg_types = {"this": True, "expression": True}
    4788
    4789
    4790class SetAgg(AggFunc):
    4791    pass
    4792
    4793
    4794class SHA(Func):
    4795    _sql_names = ["SHA", "SHA1"]
    4796
    4797
    4798class SHA2(Func):
    4799    _sql_names = ["SHA2"]
    4800    arg_types = {"this": True, "length": False}
    4801
    4802
    4803class SortArray(Func):
    4804    arg_types = {"this": True, "asc": False}
    4805
    4806
    4807class Split(Func):
    4808    arg_types = {"this": True, "expression": True, "limit": False}
    4809
    4810
    4811# Start may be omitted in the case of postgres
    4812# https://www.postgresql.org/docs/9.1/functions-string.html @ Table 9-6
    4813class Substring(Func):
    4814    arg_types = {"this": True, "start": False, "length": False}
    4815
    4816
    4817class StandardHash(Func):
    4818    arg_types = {"this": True, "expression": False}
    4819
    4820
    4821class StartsWith(Func):
    4822    _sql_names = ["STARTS_WITH", "STARTSWITH"]
    4823    arg_types = {"this": True, "expression": True}
    4824
    4825
    4826class StrPosition(Func):
    4827    arg_types = {
    4828        "this": True,
    4829        "substr": True,
    4830        "position": False,
    4831        "instance": False,
    4832    }
    4833
    4834
    4835class StrToDate(Func):
    4836    arg_types = {"this": True, "format": True}
    4837
    4838
    4839class StrToTime(Func):
    4840    arg_types = {"this": True, "format": True, "zone": False}
    4841
    4842
    4843# Spark allows unix_timestamp()
    4844# https://spark.apache.org/docs/3.1.3/api/python/reference/api/pyspark.sql.functions.unix_timestamp.html
    4845class StrToUnix(Func):
    4846    arg_types = {"this": False, "format": False}
    4847
    4848
    4849# https://prestodb.io/docs/current/functions/string.html
    4850# https://spark.apache.org/docs/latest/api/sql/index.html#str_to_map
    4851class StrToMap(Func):
    4852    arg_types = {
    4853        "this": True,
    4854        "pair_delim": False,
    4855        "key_value_delim": False,
    4856        "duplicate_resolution_callback": False,
    4857    }
    4858
    4859
    4860class NumberToStr(Func):
    4861    arg_types = {"this": True, "format": True, "culture": False}
    4862
    4863
    4864class FromBase(Func):
    4865    arg_types = {"this": True, "expression": True}
    4866
    4867
    4868class Struct(Func):
    4869    arg_types = {"expressions": True}
    4870    is_var_len_args = True
    4871
    4872
    4873class StructExtract(Func):
    4874    arg_types = {"this": True, "expression": True}
    4875
    4876
    4877# https://learn.microsoft.com/en-us/sql/t-sql/functions/stuff-transact-sql?view=sql-server-ver16
    4878# https://docs.snowflake.com/en/sql-reference/functions/insert
    4879class Stuff(Func):
    4880    _sql_names = ["STUFF", "INSERT"]
    4881    arg_types = {"this": True, "start": True, "length": True, "expression": True}
    4882
    4883
    4884class Sum(AggFunc):
    4885    pass
    4886
    4887
    4888class Sqrt(Func):
    4889    pass
    4890
    4891
    4892class Stddev(AggFunc):
    4893    pass
    4894
    4895
    4896class StddevPop(AggFunc):
    4897    pass
    4898
    4899
    4900class StddevSamp(AggFunc):
    4901    pass
    4902
    4903
    4904class TimeToStr(Func):
    4905    arg_types = {"this": True, "format": True, "culture": False}
    4906
    4907
    4908class TimeToTimeStr(Func):
    4909    pass
    4910
    4911
    4912class TimeToUnix(Func):
    4913    pass
    4914
    4915
    4916class TimeStrToDate(Func):
    4917    pass
    4918
    4919
    4920class TimeStrToTime(Func):
    4921    pass
    4922
    4923
    4924class TimeStrToUnix(Func):
    4925    pass
    4926
    4927
    4928class Trim(Func):
    4929    arg_types = {
    4930        "this": True,
    4931        "expression": False,
    4932        "position": False,
    4933        "collation": False,
    4934    }
    4935
    4936
    4937class TsOrDsAdd(Func, TimeUnit):
    4938    arg_types = {"this": True, "expression": True, "unit": False}
    4939
    4940
    4941class TsOrDsToDateStr(Func):
    4942    pass
    4943
    4944
    4945class TsOrDsToDate(Func):
    4946    arg_types = {"this": True, "format": False}
    4947
    4948
    4949class TsOrDiToDi(Func):
    4950    pass
    4951
    4952
    4953class Unhex(Func):
    4954    pass
    4955
    4956
    4957class UnixToStr(Func):
    4958    arg_types = {"this": True, "format": False}
    4959
    4960
    4961# https://prestodb.io/docs/current/functions/datetime.html
    4962# presto has weird zone/hours/minutes
    4963class UnixToTime(Func):
    4964    arg_types = {"this": True, "scale": False, "zone": False, "hours": False, "minutes": False}
    4965
    4966    SECONDS = Literal.string("seconds")
    4967    MILLIS = Literal.string("millis")
    4968    MICROS = Literal.string("micros")
    4969
    4970
    4971class UnixToTimeStr(Func):
    4972    pass
    4973
    4974
    4975class Upper(Func):
    4976    _sql_names = ["UPPER", "UCASE"]
    4977
    4978
    4979class Variance(AggFunc):
    4980    _sql_names = ["VARIANCE", "VARIANCE_SAMP", "VAR_SAMP"]
    4981
    4982
    4983class VariancePop(AggFunc):
    4984    _sql_names = ["VARIANCE_POP", "VAR_POP"]
    4985
    4986
    4987class Week(Func):
    4988    arg_types = {"this": True, "mode": False}
    4989
    4990
    4991class XMLTable(Func):
    4992    arg_types = {"this": True, "passing": False, "columns": False, "by_ref": False}
    4993
    4994
    4995class Year(Func):
    4996    pass
    4997
    4998
    4999class Use(Expression):
    5000    arg_types = {"this": True, "kind": False}
    5001
    5002
    5003class Merge(Expression):
    5004    arg_types = {"this": True, "using": True, "on": True, "expressions": True}
    5005
    5006
    5007class When(Func):
    5008    arg_types = {"matched": True, "source": False, "condition": False, "then": True}
    5009
    5010
    5011# https://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqljnextvaluefor.html
    5012# https://learn.microsoft.com/en-us/sql/t-sql/functions/next-value-for-transact-sql?view=sql-server-ver16
    5013class NextValueFor(Func):
    5014    arg_types = {"this": True, "order": False}
    5015
    5016
    5017def _norm_arg(arg):
    5018    return arg.lower() if type(arg) is str else arg
    5019
    5020
    5021ALL_FUNCTIONS = subclasses(__name__, Func, (AggFunc, Anonymous, Func))
    5022
    5023
    5024# Helpers
    5025@t.overload
    5026def maybe_parse(
    5027    sql_or_expression: ExpOrStr,
    5028    *,
    5029    into: t.Type[E],
    5030    dialect: DialectType = None,
    5031    prefix: t.Optional[str] = None,
    5032    copy: bool = False,
    5033    **opts,
    5034) -> E:
    5035    ...
    5036
    5037
    5038@t.overload
    5039def maybe_parse(
    5040    sql_or_expression: str | E,
    5041    *,
    5042    into: t.Optional[IntoType] = None,
    5043    dialect: DialectType = None,
    5044    prefix: t.Optional[str] = None,
    5045    copy: bool = False,
    5046    **opts,
    5047) -> E:
    5048    ...
    5049
    5050
    5051def maybe_parse(
    5052    sql_or_expression: ExpOrStr,
    5053    *,
    5054    into: t.Optional[IntoType] = None,
    5055    dialect: DialectType = None,
    5056    prefix: t.Optional[str] = None,
    5057    copy: bool = False,
    5058    **opts,
    5059) -> Expression:
    5060    """Gracefully handle a possible string or expression.
    5061
    5062    Example:
    5063        >>> maybe_parse("1")
    5064        (LITERAL this: 1, is_string: False)
    5065        >>> maybe_parse(to_identifier("x"))
    5066        (IDENTIFIER this: x, quoted: False)
    5067
    5068    Args:
    5069        sql_or_expression: the SQL code string or an expression
    5070        into: the SQLGlot Expression to parse into
    5071        dialect: the dialect used to parse the input expressions (in the case that an
    5072            input expression is a SQL string).
    5073        prefix: a string to prefix the sql with before it gets parsed
    5074            (automatically includes a space)
    5075        copy: whether or not to copy the expression.
    5076        **opts: other options to use to parse the input expressions (again, in the case
    5077            that an input expression is a SQL string).
    5078
    5079    Returns:
    5080        Expression: the parsed or given expression.
    5081    """
    5082    if isinstance(sql_or_expression, Expression):
    5083        if copy:
    5084            return sql_or_expression.copy()
    5085        return sql_or_expression
    5086
    5087    if sql_or_expression is None:
    5088        raise ParseError(f"SQL cannot be None")
    5089
    5090    import sqlglot
    5091
    5092    sql = str(sql_or_expression)
    5093    if prefix:
    5094        sql = f"{prefix} {sql}"
    5095
    5096    return sqlglot.parse_one(sql, read=dialect, into=into, **opts)
    5097
    5098
    5099@t.overload
    5100def maybe_copy(instance: None, copy: bool = True) -> None:
    5101    ...
    5102
    5103
    5104@t.overload
    5105def maybe_copy(instance: E, copy: bool = True) -> E:
    5106    ...
    5107
    5108
    5109def maybe_copy(instance, copy=True):
    5110    return instance.copy() if copy and instance else instance
    5111
    5112
    5113def _is_wrong_expression(expression, into):
    5114    return isinstance(expression, Expression) and not isinstance(expression, into)
    5115
    5116
    5117def _apply_builder(
    5118    expression,
    5119    instance,
    5120    arg,
    5121    copy=True,
    5122    prefix=None,
    5123    into=None,
    5124    dialect=None,
    5125    **opts,
    5126):
    5127    if _is_wrong_expression(expression, into):
    5128        expression = into(this=expression)
    5129    instance = maybe_copy(instance, copy)
    5130    expression = maybe_parse(
    5131        sql_or_expression=expression,
    5132        prefix=prefix,
    5133        into=into,
    5134        dialect=dialect,
    5135        **opts,
    5136    )
    5137    instance.set(arg, expression)
    5138    return instance
    5139
    5140
    5141def _apply_child_list_builder(
    5142    *expressions,
    5143    instance,
    5144    arg,
    5145    append=True,
    5146    copy=True,
    5147    prefix=None,
    5148    into=None,
    5149    dialect=None,
    5150    properties=None,
    5151    **opts,
    5152):
    5153    instance = maybe_copy(instance, copy)
    5154    parsed = []
    5155    for expression in expressions:
    5156        if expression is not None:
    5157            if _is_wrong_expression(expression, into):
    5158                expression = into(expressions=[expression])
    5159
    5160            expression = maybe_parse(
    5161                expression,
    5162                into=into,
    5163                dialect=dialect,
    5164                prefix=prefix,
    5165                **opts,
    5166            )
    5167            parsed.extend(expression.expressions)
    5168
    5169    existing = instance.args.get(arg)
    5170    if append and existing:
    5171        parsed = existing.expressions + parsed
    5172
    5173    child = into(expressions=parsed)
    5174    for k, v in (properties or {}).items():
    5175        child.set(k, v)
    5176    instance.set(arg, child)
    5177
    5178    return instance
    5179
    5180
    5181def _apply_list_builder(
    5182    *expressions,
    5183    instance,
    5184    arg,
    5185    append=True,
    5186    copy=True,
    5187    prefix=None,
    5188    into=None,
    5189    dialect=None,
    5190    **opts,
    5191):
    5192    inst = maybe_copy(instance, copy)
    5193
    5194    expressions = [
    5195        maybe_parse(
    5196            sql_or_expression=expression,
    5197            into=into,
    5198            prefix=prefix,
    5199            dialect=dialect,
    5200            **opts,
    5201        )
    5202        for expression in expressions
    5203        if expression is not None
    5204    ]
    5205
    5206    existing_expressions = inst.args.get(arg)
    5207    if append and existing_expressions:
    5208        expressions = existing_expressions + expressions
    5209
    5210    inst.set(arg, expressions)
    5211    return inst
    5212
    5213
    5214def _apply_conjunction_builder(
    5215    *expressions,
    5216    instance,
    5217    arg,
    5218    into=None,
    5219    append=True,
    5220    copy=True,
    5221    dialect=None,
    5222    **opts,
    5223):
    5224    expressions = [exp for exp in expressions if exp is not None and exp != ""]
    5225    if not expressions:
    5226        return instance
    5227
    5228    inst = maybe_copy(instance, copy)
    5229
    5230    existing = inst.args.get(arg)
    5231    if append and existing is not None:
    5232        expressions = [existing.this if into else existing] + list(expressions)
    5233
    5234    node = and_(*expressions, dialect=dialect, copy=copy, **opts)
    5235
    5236    inst.set(arg, into(this=node) if into else node)
    5237    return inst
    5238
    5239
    5240def _apply_cte_builder(
    5241    instance: E,
    5242    alias: ExpOrStr,
    5243    as_: ExpOrStr,
    5244    recursive: t.Optional[bool] = None,
    5245    append: bool = True,
    5246    dialect: DialectType = None,
    5247    copy: bool = True,
    5248    **opts,
    5249) -> E:
    5250    alias_expression = maybe_parse(alias, dialect=dialect, into=TableAlias, **opts)
    5251    as_expression = maybe_parse(as_, dialect=dialect, **opts)
    5252    cte = CTE(this=as_expression, alias=alias_expression)
    5253    return _apply_child_list_builder(
    5254        cte,
    5255        instance=instance,
    5256        arg="with",
    5257        append=append,
    5258        copy=copy,
    5259        into=With,
    5260        properties={"recursive": recursive or False},
    5261    )
    5262
    5263
    5264def _combine(
    5265    expressions: t.Sequence[t.Optional[ExpOrStr]],
    5266    operator: t.Type[Connector],
    5267    dialect: DialectType = None,
    5268    copy: bool = True,
    5269    **opts,
    5270) -> Expression:
    5271    conditions = [
    5272        condition(expression, dialect=dialect, copy=copy, **opts)
    5273        for expression in expressions
    5274        if expression is not None
    5275    ]
    5276
    5277    this, *rest = conditions
    5278    if rest:
    5279        this = _wrap(this, Connector)
    5280    for expression in rest:
    5281        this = operator(this=this, expression=_wrap(expression, Connector))
    5282
    5283    return this
    5284
    5285
    5286def _wrap(expression: E, kind: t.Type[Expression]) -> E | Paren:
    5287    return Paren(this=expression) if isinstance(expression, kind) else expression
    5288
    5289
    5290def union(
    5291    left: ExpOrStr, right: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    5292) -> Union:
    5293    """
    5294    Initializes a syntax tree from one UNION expression.
    5295
    5296    Example:
    5297        >>> union("SELECT * FROM foo", "SELECT * FROM bla").sql()
    5298        'SELECT * FROM foo UNION SELECT * FROM bla'
    5299
    5300    Args:
    5301        left: the SQL code string corresponding to the left-hand side.
    5302            If an `Expression` instance is passed, it will be used as-is.
    5303        right: the SQL code string corresponding to the right-hand side.
    5304            If an `Expression` instance is passed, it will be used as-is.
    5305        distinct: set the DISTINCT flag if and only if this is true.
    5306        dialect: the dialect used to parse the input expression.
    5307        opts: other options to use to parse the input expressions.
    5308
    5309    Returns:
    5310        The new Union instance.
    5311    """
    5312    left = maybe_parse(sql_or_expression=left, dialect=dialect, **opts)
    5313    right = maybe_parse(sql_or_expression=right, dialect=dialect, **opts)
    5314
    5315    return Union(this=left, expression=right, distinct=distinct)
    5316
    5317
    5318def intersect(
    5319    left: ExpOrStr, right: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    5320) -> Intersect:
    5321    """
    5322    Initializes a syntax tree from one INTERSECT expression.
    5323
    5324    Example:
    5325        >>> intersect("SELECT * FROM foo", "SELECT * FROM bla").sql()
    5326        'SELECT * FROM foo INTERSECT SELECT * FROM bla'
    5327
    5328    Args:
    5329        left: the SQL code string corresponding to the left-hand side.
    5330            If an `Expression` instance is passed, it will be used as-is.
    5331        right: the SQL code string corresponding to the right-hand side.
    5332            If an `Expression` instance is passed, it will be used as-is.
    5333        distinct: set the DISTINCT flag if and only if this is true.
    5334        dialect: the dialect used to parse the input expression.
    5335        opts: other options to use to parse the input expressions.
    5336
    5337    Returns:
    5338        The new Intersect instance.
    5339    """
    5340    left = maybe_parse(sql_or_expression=left, dialect=dialect, **opts)
    5341    right = maybe_parse(sql_or_expression=right, dialect=dialect, **opts)
    5342
    5343    return Intersect(this=left, expression=right, distinct=distinct)
    5344
    5345
    5346def except_(
    5347    left: ExpOrStr, right: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    5348) -> Except:
    5349    """
    5350    Initializes a syntax tree from one EXCEPT expression.
    5351
    5352    Example:
    5353        >>> except_("SELECT * FROM foo", "SELECT * FROM bla").sql()
    5354        'SELECT * FROM foo EXCEPT SELECT * FROM bla'
    5355
    5356    Args:
    5357        left: the SQL code string corresponding to the left-hand side.
    5358            If an `Expression` instance is passed, it will be used as-is.
    5359        right: the SQL code string corresponding to the right-hand side.
    5360            If an `Expression` instance is passed, it will be used as-is.
    5361        distinct: set the DISTINCT flag if and only if this is true.
    5362        dialect: the dialect used to parse the input expression.
    5363        opts: other options to use to parse the input expressions.
    5364
    5365    Returns:
    5366        The new Except instance.
    5367    """
    5368    left = maybe_parse(sql_or_expression=left, dialect=dialect, **opts)
    5369    right = maybe_parse(sql_or_expression=right, dialect=dialect, **opts)
    5370
    5371    return Except(this=left, expression=right, distinct=distinct)
    5372
    5373
    5374def select(*expressions: ExpOrStr, dialect: DialectType = None, **opts) -> Select:
    5375    """
    5376    Initializes a syntax tree from one or multiple SELECT expressions.
    5377
    5378    Example:
    5379        >>> select("col1", "col2").from_("tbl").sql()
    5380        'SELECT col1, col2 FROM tbl'
    5381
    5382    Args:
    5383        *expressions: the SQL code string to parse as the expressions of a
    5384            SELECT statement. If an Expression instance is passed, this is used as-is.
    5385        dialect: the dialect used to parse the input expressions (in the case that an
    5386            input expression is a SQL string).
    5387        **opts: other options to use to parse the input expressions (again, in the case
    5388            that an input expression is a SQL string).
    5389
    5390    Returns:
    5391        Select: the syntax tree for the SELECT statement.
    5392    """
    5393    return Select().select(*expressions, dialect=dialect, **opts)
    5394
    5395
    5396def from_(expression: ExpOrStr, dialect: DialectType = None, **opts) -> Select:
    5397    """
    5398    Initializes a syntax tree from a FROM expression.
    5399
    5400    Example:
    5401        >>> from_("tbl").select("col1", "col2").sql()
    5402        'SELECT col1, col2 FROM tbl'
    5403
    5404    Args:
    5405        *expression: the SQL code string to parse as the FROM expressions of a
    5406            SELECT statement. If an Expression instance is passed, this is used as-is.
    5407        dialect: the dialect used to parse the input expression (in the case that the
    5408            input expression is a SQL string).
    5409        **opts: other options to use to parse the input expressions (again, in the case
    5410            that the input expression is a SQL string).
    5411
    5412    Returns:
    5413        Select: the syntax tree for the SELECT statement.
    5414    """
    5415    return Select().from_(expression, dialect=dialect, **opts)
    5416
    5417
    5418def update(
    5419    table: str | Table,
    5420    properties: dict,
    5421    where: t.Optional[ExpOrStr] = None,
    5422    from_: t.Optional[ExpOrStr] = None,
    5423    dialect: DialectType = None,
    5424    **opts,
    5425) -> Update:
    5426    """
    5427    Creates an update statement.
    5428
    5429    Example:
    5430        >>> update("my_table", {"x": 1, "y": "2", "z": None}, from_="baz", where="id > 1").sql()
    5431        "UPDATE my_table SET x = 1, y = '2', z = NULL FROM baz WHERE id > 1"
    5432
    5433    Args:
    5434        *properties: dictionary of properties to set which are
    5435            auto converted to sql objects eg None -> NULL
    5436        where: sql conditional parsed into a WHERE statement
    5437        from_: sql statement parsed into a FROM statement
    5438        dialect: the dialect used to parse the input expressions.
    5439        **opts: other options to use to parse the input expressions.
    5440
    5441    Returns:
    5442        Update: the syntax tree for the UPDATE statement.
    5443    """
    5444    update_expr = Update(this=maybe_parse(table, into=Table, dialect=dialect))
    5445    update_expr.set(
    5446        "expressions",
    5447        [
    5448            EQ(this=maybe_parse(k, dialect=dialect, **opts), expression=convert(v))
    5449            for k, v in properties.items()
    5450        ],
    5451    )
    5452    if from_:
    5453        update_expr.set(
    5454            "from",
    5455            maybe_parse(from_, into=From, dialect=dialect, prefix="FROM", **opts),
    5456        )
    5457    if isinstance(where, Condition):
    5458        where = Where(this=where)
    5459    if where:
    5460        update_expr.set(
    5461            "where",
    5462            maybe_parse(where, into=Where, dialect=dialect, prefix="WHERE", **opts),
    5463        )
    5464    return update_expr
    5465
    5466
    5467def delete(
    5468    table: ExpOrStr,
    5469    where: t.Optional[ExpOrStr] = None,
    5470    returning: t.Optional[ExpOrStr] = None,
    5471    dialect: DialectType = None,
    5472    **opts,
    5473) -> Delete:
    5474    """
    5475    Builds a delete statement.
    5476
    5477    Example:
    5478        >>> delete("my_table", where="id > 1").sql()
    5479        'DELETE FROM my_table WHERE id > 1'
    5480
    5481    Args:
    5482        where: sql conditional parsed into a WHERE statement
    5483        returning: sql conditional parsed into a RETURNING statement
    5484        dialect: the dialect used to parse the input expressions.
    5485        **opts: other options to use to parse the input expressions.
    5486
    5487    Returns:
    5488        Delete: the syntax tree for the DELETE statement.
    5489    """
    5490    delete_expr = Delete().delete(table, dialect=dialect, copy=False, **opts)
    5491    if where:
    5492        delete_expr = delete_expr.where(where, dialect=dialect, copy=False, **opts)
    5493    if returning:
    5494        delete_expr = delete_expr.returning(returning, dialect=dialect, copy=False, **opts)
    5495    return delete_expr
    5496
    5497
    5498def insert(
    5499    expression: ExpOrStr,
    5500    into: ExpOrStr,
    5501    columns: t.Optional[t.Sequence[ExpOrStr]] = None,
    5502    overwrite: t.Optional[bool] = None,
    5503    dialect: DialectType = None,
    5504    copy: bool = True,
    5505    **opts,
    5506) -> Insert:
    5507    """
    5508    Builds an INSERT statement.
    5509
    5510    Example:
    5511        >>> insert("VALUES (1, 2, 3)", "tbl").sql()
    5512        'INSERT INTO tbl VALUES (1, 2, 3)'
    5513
    5514    Args:
    5515        expression: the sql string or expression of the INSERT statement
    5516        into: the tbl to insert data to.
    5517        columns: optionally the table's column names.
    5518        overwrite: whether to INSERT OVERWRITE or not.
    5519        dialect: the dialect used to parse the input expressions.
    5520        copy: whether or not to copy the expression.
    5521        **opts: other options to use to parse the input expressions.
    5522
    5523    Returns:
    5524        Insert: the syntax tree for the INSERT statement.
    5525    """
    5526    expr = maybe_parse(expression, dialect=dialect, copy=copy, **opts)
    5527    this: Table | Schema = maybe_parse(into, into=Table, dialect=dialect, copy=copy, **opts)
    5528
    5529    if columns:
    5530        this = _apply_list_builder(
    5531            *columns,
    5532            instance=Schema(this=this),
    5533            arg="expressions",
    5534            into=Identifier,
    5535            copy=False,
    5536            dialect=dialect,
    5537            **opts,
    5538        )
    5539
    5540    return Insert(this=this, expression=expr, overwrite=overwrite)
    5541
    5542
    5543def condition(
    5544    expression: ExpOrStr, dialect: DialectType = None, copy: bool = True, **opts
    5545) -> Condition:
    5546    """
    5547    Initialize a logical condition expression.
    5548
    5549    Example:
    5550        >>> condition("x=1").sql()
    5551        'x = 1'
    5552
    5553        This is helpful for composing larger logical syntax trees:
    5554        >>> where = condition("x=1")
    5555        >>> where = where.and_("y=1")
    5556        >>> Select().from_("tbl").select("*").where(where).sql()
    5557        'SELECT * FROM tbl WHERE x = 1 AND y = 1'
    5558
    5559    Args:
    5560        *expression: the SQL code string to parse.
    5561            If an Expression instance is passed, this is used as-is.
    5562        dialect: the dialect used to parse the input expression (in the case that the
    5563            input expression is a SQL string).
    5564        copy: Whether or not to copy `expression` (only applies to expressions).
    5565        **opts: other options to use to parse the input expressions (again, in the case
    5566            that the input expression is a SQL string).
    5567
    5568    Returns:
    5569        The new Condition instance
    5570    """
    5571    return maybe_parse(
    5572        expression,
    5573        into=Condition,
    5574        dialect=dialect,
    5575        copy=copy,
    5576        **opts,
    5577    )
    5578
    5579
    5580def and_(
    5581    *expressions: t.Optional[ExpOrStr], dialect: DialectType = None, copy: bool = True, **opts
    5582) -> Condition:
    5583    """
    5584    Combine multiple conditions with an AND logical operator.
    5585
    5586    Example:
    5587        >>> and_("x=1", and_("y=1", "z=1")).sql()
    5588        'x = 1 AND (y = 1 AND z = 1)'
    5589
    5590    Args:
    5591        *expressions: the SQL code strings to parse.
    5592            If an Expression instance is passed, this is used as-is.
    5593        dialect: the dialect used to parse the input expression.
    5594        copy: whether or not to copy `expressions` (only applies to Expressions).
    5595        **opts: other options to use to parse the input expressions.
    5596
    5597    Returns:
    5598        And: the new condition
    5599    """
    5600    return t.cast(Condition, _combine(expressions, And, dialect, copy=copy, **opts))
    5601
    5602
    5603def or_(
    5604    *expressions: t.Optional[ExpOrStr], dialect: DialectType = None, copy: bool = True, **opts
    5605) -> Condition:
    5606    """
    5607    Combine multiple conditions with an OR logical operator.
    5608
    5609    Example:
    5610        >>> or_("x=1", or_("y=1", "z=1")).sql()
    5611        'x = 1 OR (y = 1 OR z = 1)'
    5612
    5613    Args:
    5614        *expressions: the SQL code strings to parse.
    5615            If an Expression instance is passed, this is used as-is.
    5616        dialect: the dialect used to parse the input expression.
    5617        copy: whether or not to copy `expressions` (only applies to Expressions).
    5618        **opts: other options to use to parse the input expressions.
    5619
    5620    Returns:
    5621        Or: the new condition
    5622    """
    5623    return t.cast(Condition, _combine(expressions, Or, dialect, copy=copy, **opts))
    5624
    5625
    5626def not_(expression: ExpOrStr, dialect: DialectType = None, copy: bool = True, **opts) -> Not:
    5627    """
    5628    Wrap a condition with a NOT operator.
    5629
    5630    Example:
    5631        >>> not_("this_suit='black'").sql()
    5632        "NOT this_suit = 'black'"
    5633
    5634    Args:
    5635        expression: the SQL code string to parse.
    5636            If an Expression instance is passed, this is used as-is.
    5637        dialect: the dialect used to parse the input expression.
    5638        copy: whether to copy the expression or not.
    5639        **opts: other options to use to parse the input expressions.
    5640
    5641    Returns:
    5642        The new condition.
    5643    """
    5644    this = condition(
    5645        expression,
    5646        dialect=dialect,
    5647        copy=copy,
    5648        **opts,
    5649    )
    5650    return Not(this=_wrap(this, Connector))
    5651
    5652
    5653def paren(expression: ExpOrStr, copy: bool = True) -> Paren:
    5654    """
    5655    Wrap an expression in parentheses.
    5656
    5657    Example:
    5658        >>> paren("5 + 3").sql()
    5659        '(5 + 3)'
    5660
    5661    Args:
    5662        expression: the SQL code string to parse.
    5663            If an Expression instance is passed, this is used as-is.
    5664        copy: whether to copy the expression or not.
    5665
    5666    Returns:
    5667        The wrapped expression.
    5668    """
    5669    return Paren(this=maybe_parse(expression, copy=copy))
    5670
    5671
    5672SAFE_IDENTIFIER_RE = re.compile(r"^[_a-zA-Z][\w]*$")
    5673
    5674
    5675@t.overload
    5676def to_identifier(name: None, quoted: t.Optional[bool] = None, copy: bool = True) -> None:
    5677    ...
    5678
    5679
    5680@t.overload
    5681def to_identifier(
    5682    name: str | Identifier, quoted: t.Optional[bool] = None, copy: bool = True
    5683) -> Identifier:
    5684    ...
    5685
    5686
    5687def to_identifier(name, quoted=None, copy=True):
    5688    """Builds an identifier.
    5689
    5690    Args:
    5691        name: The name to turn into an identifier.
    5692        quoted: Whether or not force quote the identifier.
    5693        copy: Whether or not to copy a passed in Identefier node.
    5694
    5695    Returns:
    5696        The identifier ast node.
    5697    """
    5698
    5699    if name is None:
    5700        return None
    5701
    5702    if isinstance(name, Identifier):
    5703        identifier = maybe_copy(name, copy)
    5704    elif isinstance(name, str):
    5705        identifier = Identifier(
    5706            this=name,
    5707            quoted=not SAFE_IDENTIFIER_RE.match(name) if quoted is None else quoted,
    5708        )
    5709    else:
    5710        raise ValueError(f"Name needs to be a string or an Identifier, got: {name.__class__}")
    5711    return identifier
    5712
    5713
    5714INTERVAL_STRING_RE = re.compile(r"\s*([0-9]+)\s*([a-zA-Z]+)\s*")
    5715
    5716
    5717def to_interval(interval: str | Literal) -> Interval:
    5718    """Builds an interval expression from a string like '1 day' or '5 months'."""
    5719    if isinstance(interval, Literal):
    5720        if not interval.is_string:
    5721            raise ValueError("Invalid interval string.")
    5722
    5723        interval = interval.this
    5724
    5725    interval_parts = INTERVAL_STRING_RE.match(interval)  # type: ignore
    5726
    5727    if not interval_parts:
    5728        raise ValueError("Invalid interval string.")
    5729
    5730    return Interval(
    5731        this=Literal.string(interval_parts.group(1)),
    5732        unit=Var(this=interval_parts.group(2)),
    5733    )
    5734
    5735
    5736@t.overload
    5737def to_table(sql_path: str | Table, **kwargs) -> Table:
    5738    ...
    5739
    5740
    5741@t.overload
    5742def to_table(sql_path: None, **kwargs) -> None:
    5743    ...
    5744
    5745
    5746def to_table(
    5747    sql_path: t.Optional[str | Table], dialect: DialectType = None, **kwargs
    5748) -> t.Optional[Table]:
    5749    """
    5750    Create a table expression from a `[catalog].[schema].[table]` sql path. Catalog and schema are optional.
    5751    If a table is passed in then that table is returned.
    5752
    5753    Args:
    5754        sql_path: a `[catalog].[schema].[table]` string.
    5755        dialect: the source dialect according to which the table name will be parsed.
    5756        kwargs: the kwargs to instantiate the resulting `Table` expression with.
    5757
    5758    Returns:
    5759        A table expression.
    5760    """
    5761    if sql_path is None or isinstance(sql_path, Table):
    5762        return sql_path
    5763    if not isinstance(sql_path, str):
    5764        raise ValueError(f"Invalid type provided for a table: {type(sql_path)}")
    5765
    5766    table = maybe_parse(sql_path, into=Table, dialect=dialect)
    5767    if table:
    5768        for k, v in kwargs.items():
    5769            table.set(k, v)
    5770
    5771    return table
    5772
    5773
    5774def to_column(sql_path: str | Column, **kwargs) -> Column:
    5775    """
    5776    Create a column from a `[table].[column]` sql path. Schema is optional.
    5777
    5778    If a column is passed in then that column is returned.
    5779
    5780    Args:
    5781        sql_path: `[table].[column]` string
    5782    Returns:
    5783        Table: A column expression
    5784    """
    5785    if sql_path is None or isinstance(sql_path, Column):
    5786        return sql_path
    5787    if not isinstance(sql_path, str):
    5788        raise ValueError(f"Invalid type provided for column: {type(sql_path)}")
    5789    return column(*reversed(sql_path.split(".")), **kwargs)  # type: ignore
    5790
    5791
    5792def alias_(
    5793    expression: ExpOrStr,
    5794    alias: str | Identifier,
    5795    table: bool | t.Sequence[str | Identifier] = False,
    5796    quoted: t.Optional[bool] = None,
    5797    dialect: DialectType = None,
    5798    copy: bool = True,
    5799    **opts,
    5800):
    5801    """Create an Alias expression.
    5802
    5803    Example:
    5804        >>> alias_('foo', 'bar').sql()
    5805        'foo AS bar'
    5806
    5807        >>> alias_('(select 1, 2)', 'bar', table=['a', 'b']).sql()
    5808        '(SELECT 1, 2) AS bar(a, b)'
    5809
    5810    Args:
    5811        expression: the SQL code strings to parse.
    5812            If an Expression instance is passed, this is used as-is.
    5813        alias: the alias name to use. If the name has
    5814            special characters it is quoted.
    5815        table: Whether or not to create a table alias, can also be a list of columns.
    5816        quoted: whether or not to quote the alias
    5817        dialect: the dialect used to parse the input expression.
    5818        copy: Whether or not to copy the expression.
    5819        **opts: other options to use to parse the input expressions.
    5820
    5821    Returns:
    5822        Alias: the aliased expression
    5823    """
    5824    exp = maybe_parse(expression, dialect=dialect, copy=copy, **opts)
    5825    alias = to_identifier(alias, quoted=quoted)
    5826
    5827    if table:
    5828        table_alias = TableAlias(this=alias)
    5829        exp.set("alias", table_alias)
    5830
    5831        if not isinstance(table, bool):
    5832            for column in table:
    5833                table_alias.append("columns", to_identifier(column, quoted=quoted))
    5834
    5835        return exp
    5836
    5837    # We don't set the "alias" arg for Window expressions, because that would add an IDENTIFIER node in
    5838    # the AST, representing a "named_window" [1] construct (eg. bigquery). What we want is an ALIAS node
    5839    # for the complete Window expression.
    5840    #
    5841    # [1]: https://cloud.google.com/bigquery/docs/reference/standard-sql/window-function-calls
    5842
    5843    if "alias" in exp.arg_types and not isinstance(exp, Window):
    5844        exp.set("alias", alias)
    5845        return exp
    5846    return Alias(this=exp, alias=alias)
    5847
    5848
    5849def subquery(
    5850    expression: ExpOrStr,
    5851    alias: t.Optional[Identifier | str] = None,
    5852    dialect: DialectType = None,
    5853    **opts,
    5854) -> Select:
    5855    """
    5856    Build a subquery expression.
    5857
    5858    Example:
    5859        >>> subquery('select x from tbl', 'bar').select('x').sql()
    5860        'SELECT x FROM (SELECT x FROM tbl) AS bar'
    5861
    5862    Args:
    5863        expression: the SQL code strings to parse.
    5864            If an Expression instance is passed, this is used as-is.
    5865        alias: the alias name to use.
    5866        dialect: the dialect used to parse the input expression.
    5867        **opts: other options to use to parse the input expressions.
    5868
    5869    Returns:
    5870        A new Select instance with the subquery expression included.
    5871    """
    5872
    5873    expression = maybe_parse(expression, dialect=dialect, **opts).subquery(alias)
    5874    return Select().from_(expression, dialect=dialect, **opts)
    5875
    5876
    5877def column(
    5878    col: str | Identifier,
    5879    table: t.Optional[str | Identifier] = None,
    5880    db: t.Optional[str | Identifier] = None,
    5881    catalog: t.Optional[str | Identifier] = None,
    5882    quoted: t.Optional[bool] = None,
    5883) -> Column:
    5884    """
    5885    Build a Column.
    5886
    5887    Args:
    5888        col: Column name.
    5889        table: Table name.
    5890        db: Database name.
    5891        catalog: Catalog name.
    5892        quoted: Whether to force quotes on the column's identifiers.
    5893
    5894    Returns:
    5895        The new Column instance.
    5896    """
    5897    return Column(
    5898        this=to_identifier(col, quoted=quoted),
    5899        table=to_identifier(table, quoted=quoted),
    5900        db=to_identifier(db, quoted=quoted),
    5901        catalog=to_identifier(catalog, quoted=quoted),
    5902    )
    5903
    5904
    5905def cast(expression: ExpOrStr, to: str | DataType | DataType.Type, **opts) -> Cast:
    5906    """Cast an expression to a data type.
    5907
    5908    Example:
    5909        >>> cast('x + 1', 'int').sql()
    5910        'CAST(x + 1 AS INT)'
    5911
    5912    Args:
    5913        expression: The expression to cast.
    5914        to: The datatype to cast to.
    5915
    5916    Returns:
    5917        The new Cast instance.
    5918    """
    5919    expression = maybe_parse(expression, **opts)
    5920    return Cast(this=expression, to=DataType.build(to, **opts))
    5921
    5922
    5923def table_(
    5924    table: Identifier | str,
    5925    db: t.Optional[Identifier | str] = None,
    5926    catalog: t.Optional[Identifier | str] = None,
    5927    quoted: t.Optional[bool] = None,
    5928    alias: t.Optional[Identifier | str] = None,
    5929) -> Table:
    5930    """Build a Table.
    5931
    5932    Args:
    5933        table: Table name.
    5934        db: Database name.
    5935        catalog: Catalog name.
    5936        quote: Whether to force quotes on the table's identifiers.
    5937        alias: Table's alias.
    5938
    5939    Returns:
    5940        The new Table instance.
    5941    """
    5942    return Table(
    5943        this=to_identifier(table, quoted=quoted) if table else None,
    5944        db=to_identifier(db, quoted=quoted) if db else None,
    5945        catalog=to_identifier(catalog, quoted=quoted) if catalog else None,
    5946        alias=TableAlias(this=to_identifier(alias)) if alias else None,
    5947    )
    5948
    5949
    5950def values(
    5951    values: t.Iterable[t.Tuple[t.Any, ...]],
    5952    alias: t.Optional[str] = None,
    5953    columns: t.Optional[t.Iterable[str] | t.Dict[str, DataType]] = None,
    5954) -> Values:
    5955    """Build VALUES statement.
    5956
    5957    Example:
    5958        >>> values([(1, '2')]).sql()
    5959        "VALUES (1, '2')"
    5960
    5961    Args:
    5962        values: values statements that will be converted to SQL
    5963        alias: optional alias
    5964        columns: Optional list of ordered column names or ordered dictionary of column names to types.
    5965         If either are provided then an alias is also required.
    5966
    5967    Returns:
    5968        Values: the Values expression object
    5969    """
    5970    if columns and not alias:
    5971        raise ValueError("Alias is required when providing columns")
    5972
    5973    return Values(
    5974        expressions=[convert(tup) for tup in values],
    5975        alias=(
    5976            TableAlias(this=to_identifier(alias), columns=[to_identifier(x) for x in columns])
    5977            if columns
    5978            else (TableAlias(this=to_identifier(alias)) if alias else None)
    5979        ),
    5980    )
    5981
    5982
    5983def var(name: t.Optional[ExpOrStr]) -> Var:
    5984    """Build a SQL variable.
    5985
    5986    Example:
    5987        >>> repr(var('x'))
    5988        '(VAR this: x)'
    5989
    5990        >>> repr(var(column('x', table='y')))
    5991        '(VAR this: x)'
    5992
    5993    Args:
    5994        name: The name of the var or an expression who's name will become the var.
    5995
    5996    Returns:
    5997        The new variable node.
    5998    """
    5999    if not name:
    6000        raise ValueError("Cannot convert empty name into var.")
    6001
    6002    if isinstance(name, Expression):
    6003        name = name.name
    6004    return Var(this=name)
    6005
    6006
    6007def rename_table(old_name: str | Table, new_name: str | Table) -> AlterTable:
    6008    """Build ALTER TABLE... RENAME... expression
    6009
    6010    Args:
    6011        old_name: The old name of the table
    6012        new_name: The new name of the table
    6013
    6014    Returns:
    6015        Alter table expression
    6016    """
    6017    old_table = to_table(old_name)
    6018    new_table = to_table(new_name)
    6019    return AlterTable(
    6020        this=old_table,
    6021        actions=[
    6022            RenameTable(this=new_table),
    6023        ],
    6024    )
    6025
    6026
    6027def convert(value: t.Any, copy: bool = False) -> Expression:
    6028    """Convert a python value into an expression object.
    6029
    6030    Raises an error if a conversion is not possible.
    6031
    6032    Args:
    6033        value: A python object.
    6034        copy: Whether or not to copy `value` (only applies to Expressions and collections).
    6035
    6036    Returns:
    6037        Expression: the equivalent expression object.
    6038    """
    6039    if isinstance(value, Expression):
    6040        return maybe_copy(value, copy)
    6041    if isinstance(value, str):
    6042        return Literal.string(value)
    6043    if isinstance(value, bool):
    6044        return Boolean(this=value)
    6045    if value is None or (isinstance(value, float) and math.isnan(value)):
    6046        return NULL
    6047    if isinstance(value, numbers.Number):
    6048        return Literal.number(value)
    6049    if isinstance(value, datetime.datetime):
    6050        datetime_literal = Literal.string(
    6051            (value if value.tzinfo else value.replace(tzinfo=datetime.timezone.utc)).isoformat()
    6052        )
    6053        return TimeStrToTime(this=datetime_literal)
    6054    if isinstance(value, datetime.date):
    6055        date_literal = Literal.string(value.strftime("%Y-%m-%d"))
    6056        return DateStrToDate(this=date_literal)
    6057    if isinstance(value, tuple):
    6058        return Tuple(expressions=[convert(v, copy=copy) for v in value])
    6059    if isinstance(value, list):
    6060        return Array(expressions=[convert(v, copy=copy) for v in value])
    6061    if isinstance(value, dict):
    6062        return Map(
    6063            keys=Array(expressions=[convert(k, copy=copy) for k in value]),
    6064            values=Array(expressions=[convert(v, copy=copy) for v in value.values()]),
    6065        )
    6066    raise ValueError(f"Cannot convert {value}")
    6067
    6068
    6069def replace_children(expression: Expression, fun: t.Callable, *args, **kwargs) -> None:
    6070    """
    6071    Replace children of an expression with the result of a lambda fun(child) -> exp.
    6072    """
    6073    for k, v in expression.args.items():
    6074        is_list_arg = type(v) is list
    6075
    6076        child_nodes = v if is_list_arg else [v]
    6077        new_child_nodes = []
    6078
    6079        for cn in child_nodes:
    6080            if isinstance(cn, Expression):
    6081                for child_node in ensure_collection(fun(cn, *args, **kwargs)):
    6082                    new_child_nodes.append(child_node)
    6083                    child_node.parent = expression
    6084                    child_node.arg_key = k
    6085            else:
    6086                new_child_nodes.append(cn)
    6087
    6088        expression.args[k] = new_child_nodes if is_list_arg else seq_get(new_child_nodes, 0)
    6089
    6090
    6091def column_table_names(expression: Expression, exclude: str = "") -> t.Set[str]:
    6092    """
    6093    Return all table names referenced through columns in an expression.
    6094
    6095    Example:
    6096        >>> import sqlglot
    6097        >>> sorted(column_table_names(sqlglot.parse_one("a.b AND c.d AND c.e")))
    6098        ['a', 'c']
    6099
    6100    Args:
    6101        expression: expression to find table names.
    6102        exclude: a table name to exclude
    6103
    6104    Returns:
    6105        A list of unique names.
    6106    """
    6107    return {
    6108        table
    6109        for table in (column.table for column in expression.find_all(Column))
    6110        if table and table != exclude
    6111    }
    6112
    6113
    6114def table_name(table: Table | str, dialect: DialectType = None) -> str:
    6115    """Get the full name of a table as a string.
    6116
    6117    Args:
    6118        table: Table expression node or string.
    6119        dialect: The dialect to generate the table name for.
    6120
    6121    Examples:
    6122        >>> from sqlglot import exp, parse_one
    6123        >>> table_name(parse_one("select * from a.b.c").find(exp.Table))
    6124        'a.b.c'
    6125
    6126    Returns:
    6127        The table name.
    6128    """
    6129
    6130    table = maybe_parse(table, into=Table)
    6131
    6132    if not table:
    6133        raise ValueError(f"Cannot parse {table}")
    6134
    6135    return ".".join(
    6136        part.sql(dialect=dialect, identify=True)
    6137        if not SAFE_IDENTIFIER_RE.match(part.name)
    6138        else part.name
    6139        for part in table.parts
    6140    )
    6141
    6142
    6143def replace_tables(expression: E, mapping: t.Dict[str, str], copy: bool = True) -> E:
    6144    """Replace all tables in expression according to the mapping.
    6145
    6146    Args:
    6147        expression: expression node to be transformed and replaced.
    6148        mapping: mapping of table names.
    6149        copy: whether or not to copy the expression.
    6150
    6151    Examples:
    6152        >>> from sqlglot import exp, parse_one
    6153        >>> replace_tables(parse_one("select * from a.b"), {"a.b": "c"}).sql()
    6154        'SELECT * FROM c'
    6155
    6156    Returns:
    6157        The mapped expression.
    6158    """
    6159
    6160    def _replace_tables(node: Expression) -> Expression:
    6161        if isinstance(node, Table):
    6162            new_name = mapping.get(table_name(node))
    6163            if new_name:
    6164                return to_table(
    6165                    new_name,
    6166                    **{k: v for k, v in node.args.items() if k not in ("this", "db", "catalog")},
    6167                )
    6168        return node
    6169
    6170    return expression.transform(_replace_tables, copy=copy)
    6171
    6172
    6173def replace_placeholders(expression: Expression, *args, **kwargs) -> Expression:
    6174    """Replace placeholders in an expression.
    6175
    6176    Args:
    6177        expression: expression node to be transformed and replaced.
    6178        args: positional names that will substitute unnamed placeholders in the given order.
    6179        kwargs: keyword arguments that will substitute named placeholders.
    6180
    6181    Examples:
    6182        >>> from sqlglot import exp, parse_one
    6183        >>> replace_placeholders(
    6184        ...     parse_one("select * from :tbl where ? = ?"),
    6185        ...     exp.to_identifier("str_col"), "b", tbl=exp.to_identifier("foo")
    6186        ... ).sql()
    6187        "SELECT * FROM foo WHERE str_col = 'b'"
    6188
    6189    Returns:
    6190        The mapped expression.
    6191    """
    6192
    6193    def _replace_placeholders(node: Expression, args, **kwargs) -> Expression:
    6194        if isinstance(node, Placeholder):
    6195            if node.name:
    6196                new_name = kwargs.get(node.name)
    6197                if new_name:
    6198                    return convert(new_name)
    6199            else:
    6200                try:
    6201                    return convert(next(args))
    6202                except StopIteration:
    6203                    pass
    6204        return node
    6205
    6206    return expression.transform(_replace_placeholders, iter(args), **kwargs)
    6207
    6208
    6209def expand(
    6210    expression: Expression, sources: t.Dict[str, Subqueryable], copy: bool = True
    6211) -> Expression:
    6212    """Transforms an expression by expanding all referenced sources into subqueries.
    6213
    6214    Examples:
    6215        >>> from sqlglot import parse_one
    6216        >>> expand(parse_one("select * from x AS z"), {"x": parse_one("select * from y")}).sql()
    6217        'SELECT * FROM (SELECT * FROM y) AS z /* source: x */'
    6218
    6219        >>> expand(parse_one("select * from x AS z"), {"x": parse_one("select * from y"), "y": parse_one("select * from z")}).sql()
    6220        'SELECT * FROM (SELECT * FROM (SELECT * FROM z) AS y /* source: y */) AS z /* source: x */'
    6221
    6222    Args:
    6223        expression: The expression to expand.
    6224        sources: A dictionary of name to Subqueryables.
    6225        copy: Whether or not to copy the expression during transformation. Defaults to True.
    6226
    6227    Returns:
    6228        The transformed expression.
    6229    """
    6230
    6231    def _expand(node: Expression):
    6232        if isinstance(node, Table):
    6233            name = table_name(node)
    6234            source = sources.get(name)
    6235            if source:
    6236                subquery = source.subquery(node.alias or name)
    6237                subquery.comments = [f"source: {name}"]
    6238                return subquery.transform(_expand, copy=False)
    6239        return node
    6240
    6241    return expression.transform(_expand, copy=copy)
    6242
    6243
    6244def func(name: str, *args, dialect: DialectType = None, **kwargs) -> Func:
    6245    """
    6246    Returns a Func expression.
    6247
    6248    Examples:
    6249        >>> func("abs", 5).sql()
    6250        'ABS(5)'
    6251
    6252        >>> func("cast", this=5, to=DataType.build("DOUBLE")).sql()
    6253        'CAST(5 AS DOUBLE)'
    6254
    6255    Args:
    6256        name: the name of the function to build.
    6257        args: the args used to instantiate the function of interest.
    6258        dialect: the source dialect.
    6259        kwargs: the kwargs used to instantiate the function of interest.
    6260
    6261    Note:
    6262        The arguments `args` and `kwargs` are mutually exclusive.
    6263
    6264    Returns:
    6265        An instance of the function of interest, or an anonymous function, if `name` doesn't
    6266        correspond to an existing `sqlglot.expressions.Func` class.
    6267    """
    6268    if args and kwargs:
    6269        raise ValueError("Can't use both args and kwargs to instantiate a function.")
    6270
    6271    from sqlglot.dialects.dialect import Dialect
    6272
    6273    converted: t.List[Expression] = [maybe_parse(arg, dialect=dialect) for arg in args]
    6274    kwargs = {key: maybe_parse(value, dialect=dialect) for key, value in kwargs.items()}
    6275
    6276    parser = Dialect.get_or_raise(dialect)().parser()
    6277    from_args_list = parser.FUNCTIONS.get(name.upper())
    6278
    6279    if from_args_list:
    6280        function = from_args_list(converted) if converted else from_args_list.__self__(**kwargs)  # type: ignore
    6281    else:
    6282        kwargs = kwargs or {"expressions": converted}
    6283        function = Anonymous(this=name, **kwargs)
    6284
    6285    for error_message in function.error_messages(converted):
    6286        raise ValueError(error_message)
    6287
    6288    return function
    6289
    6290
    6291def true() -> Boolean:
    6292    """
    6293    Returns a true Boolean expression.
    6294    """
    6295    return Boolean(this=True)
    6296
    6297
    6298def false() -> Boolean:
    6299    """
    6300    Returns a false Boolean expression.
    6301    """
    6302    return Boolean(this=False)
    6303
    6304
    6305def null() -> Null:
    6306    """
    6307    Returns a Null expression.
    6308    """
    6309    return Null()
    6310
    6311
    6312# TODO: deprecate this
    6313TRUE = Boolean(this=True)
    6314FALSE = Boolean(this=False)
    6315NULL = Null()

class Expression: View Source

     56class Expression(metaclass=_Expression):
     57    """
     58    The base class for all expressions in a syntax tree. Each Expression encapsulates any necessary
     59    context, such as its child expressions, their names (arg keys), and whether a given child expression
     60    is optional or not.
     61
     62    Attributes:
     63        key: a unique key for each class in the Expression hierarchy. This is useful for hashing
     64            and representing expressions as strings.
     65        arg_types: determines what arguments (child nodes) are supported by an expression. It
     66            maps arg keys to booleans that indicate whether the corresponding args are optional.
     67        parent: a reference to the parent expression (or None, in case of root expressions).
     68        arg_key: the arg key an expression is associated with, i.e. the name its parent expression
     69            uses to refer to it.
     70        comments: a list of comments that are associated with a given expression. This is used in
     71            order to preserve comments when transpiling SQL code.
     72        type: the `sqlglot.expressions.DataType` type of an expression. This is inferred by the
     73            optimizer, in order to enable some transformations that require type information.
     74        meta: a dictionary that can be used to store useful metadata for a given expression.
     75
     76    Example:
     77        >>> class Foo(Expression):
     78        ...     arg_types = {"this": True, "expression": False}
     79
     80        The above definition informs us that Foo is an Expression that requires an argument called
     81        "this" and may also optionally receive an argument called "expression".
     82
     83    Args:
     84        args: a mapping used for retrieving the arguments of an expression, given their arg keys.
     85    """
     86
     87    key = "expression"
     88    arg_types = {"this": True}
     89    __slots__ = ("args", "parent", "arg_key", "comments", "_type", "_meta", "_hash")
     90
     91    def __init__(self, **args: t.Any):
     92        self.args: t.Dict[str, t.Any] = args
     93        self.parent: t.Optional[Expression] = None
     94        self.arg_key: t.Optional[str] = None
     95        self.comments: t.Optional[t.List[str]] = None
     96        self._type: t.Optional[DataType] = None
     97        self._meta: t.Optional[t.Dict[str, t.Any]] = None
     98        self._hash: t.Optional[int] = None
     99
    100        for arg_key, value in self.args.items():
    101            self._set_parent(arg_key, value)
    102
    103    def __eq__(self, other) -> bool:
    104        return type(self) is type(other) and hash(self) == hash(other)
    105
    106    @property
    107    def hashable_args(self) -> t.Any:
    108        return frozenset(
    109            (k, tuple(_norm_arg(a) for a in v) if type(v) is list else _norm_arg(v))
    110            for k, v in self.args.items()
    111            if not (v is None or v is False or (type(v) is list and not v))
    112        )
    113
    114    def __hash__(self) -> int:
    115        if self._hash is not None:
    116            return self._hash
    117
    118        return hash((self.__class__, self.hashable_args))
    119
    120    @property
    121    def this(self):
    122        """
    123        Retrieves the argument with key "this".
    124        """
    125        return self.args.get("this")
    126
    127    @property
    128    def expression(self):
    129        """
    130        Retrieves the argument with key "expression".
    131        """
    132        return self.args.get("expression")
    133
    134    @property
    135    def expressions(self):
    136        """
    137        Retrieves the argument with key "expressions".
    138        """
    139        return self.args.get("expressions") or []
    140
    141    def text(self, key) -> str:
    142        """
    143        Returns a textual representation of the argument corresponding to "key". This can only be used
    144        for args that are strings or leaf Expression instances, such as identifiers and literals.
    145        """
    146        field = self.args.get(key)
    147        if isinstance(field, str):
    148            return field
    149        if isinstance(field, (Identifier, Literal, Var)):
    150            return field.this
    151        if isinstance(field, (Star, Null)):
    152            return field.name
    153        return ""
    154
    155    @property
    156    def is_string(self) -> bool:
    157        """
    158        Checks whether a Literal expression is a string.
    159        """
    160        return isinstance(self, Literal) and self.args["is_string"]
    161
    162    @property
    163    def is_number(self) -> bool:
    164        """
    165        Checks whether a Literal expression is a number.
    166        """
    167        return isinstance(self, Literal) and not self.args["is_string"]
    168
    169    @property
    170    def is_int(self) -> bool:
    171        """
    172        Checks whether a Literal expression is an integer.
    173        """
    174        if self.is_number:
    175            try:
    176                int(self.name)
    177                return True
    178            except ValueError:
    179                pass
    180        return False
    181
    182    @property
    183    def is_star(self) -> bool:
    184        """Checks whether an expression is a star."""
    185        return isinstance(self, Star) or (isinstance(self, Column) and isinstance(self.this, Star))
    186
    187    @property
    188    def alias(self) -> str:
    189        """
    190        Returns the alias of the expression, or an empty string if it's not aliased.
    191        """
    192        if isinstance(self.args.get("alias"), TableAlias):
    193            return self.args["alias"].name
    194        return self.text("alias")
    195
    196    @property
    197    def alias_column_names(self) -> t.List[str]:
    198        table_alias = self.args.get("alias")
    199        if not table_alias:
    200            return []
    201        return [c.name for c in table_alias.args.get("columns") or []]
    202
    203    @property
    204    def name(self) -> str:
    205        return self.text("this")
    206
    207    @property
    208    def alias_or_name(self) -> str:
    209        return self.alias or self.name
    210
    211    @property
    212    def output_name(self) -> str:
    213        """
    214        Name of the output column if this expression is a selection.
    215
    216        If the Expression has no output name, an empty string is returned.
    217
    218        Example:
    219            >>> from sqlglot import parse_one
    220            >>> parse_one("SELECT a").expressions[0].output_name
    221            'a'
    222            >>> parse_one("SELECT b AS c").expressions[0].output_name
    223            'c'
    224            >>> parse_one("SELECT 1 + 2").expressions[0].output_name
    225            ''
    226        """
    227        return ""
    228
    229    @property
    230    def type(self) -> t.Optional[DataType]:
    231        return self._type
    232
    233    @type.setter
    234    def type(self, dtype: t.Optional[DataType | DataType.Type | str]) -> None:
    235        if dtype and not isinstance(dtype, DataType):
    236            dtype = DataType.build(dtype)
    237        self._type = dtype  # type: ignore
    238
    239    @property
    240    def meta(self) -> t.Dict[str, t.Any]:
    241        if self._meta is None:
    242            self._meta = {}
    243        return self._meta
    244
    245    def __deepcopy__(self, memo):
    246        copy = self.__class__(**deepcopy(self.args))
    247        if self.comments is not None:
    248            copy.comments = deepcopy(self.comments)
    249
    250        if self._type is not None:
    251            copy._type = self._type.copy()
    252
    253        if self._meta is not None:
    254            copy._meta = deepcopy(self._meta)
    255
    256        return copy
    257
    258    def copy(self):
    259        """
    260        Returns a deep copy of the expression.
    261        """
    262        new = deepcopy(self)
    263        new.parent = self.parent
    264        return new
    265
    266    def add_comments(self, comments: t.Optional[t.List[str]]) -> None:
    267        if self.comments is None:
    268            self.comments = []
    269        if comments:
    270            self.comments.extend(comments)
    271
    272    def append(self, arg_key: str, value: t.Any) -> None:
    273        """
    274        Appends value to arg_key if it's a list or sets it as a new list.
    275
    276        Args:
    277            arg_key (str): name of the list expression arg
    278            value (Any): value to append to the list
    279        """
    280        if not isinstance(self.args.get(arg_key), list):
    281            self.args[arg_key] = []
    282        self.args[arg_key].append(value)
    283        self._set_parent(arg_key, value)
    284
    285    def set(self, arg_key: str, value: t.Any) -> None:
    286        """
    287        Sets arg_key to value.
    288
    289        Args:
    290            arg_key: name of the expression arg.
    291            value: value to set the arg to.
    292        """
    293        if value is None:
    294            self.args.pop(arg_key, None)
    295            return
    296
    297        self.args[arg_key] = value
    298        self._set_parent(arg_key, value)
    299
    300    def _set_parent(self, arg_key: str, value: t.Any) -> None:
    301        if hasattr(value, "parent"):
    302            value.parent = self
    303            value.arg_key = arg_key
    304        elif type(value) is list:
    305            for v in value:
    306                if hasattr(v, "parent"):
    307                    v.parent = self
    308                    v.arg_key = arg_key
    309
    310    @property
    311    def depth(self) -> int:
    312        """
    313        Returns the depth of this tree.
    314        """
    315        if self.parent:
    316            return self.parent.depth + 1
    317        return 0
    318
    319    def iter_expressions(self) -> t.Iterator[t.Tuple[str, Expression]]:
    320        """Yields the key and expression for all arguments, exploding list args."""
    321        for k, vs in self.args.items():
    322            if type(vs) is list:
    323                for v in vs:
    324                    if hasattr(v, "parent"):
    325                        yield k, v
    326            else:
    327                if hasattr(vs, "parent"):
    328                    yield k, vs
    329
    330    def find(self, *expression_types: t.Type[E], bfs: bool = True) -> t.Optional[E]:
    331        """
    332        Returns the first node in this tree which matches at least one of
    333        the specified types.
    334
    335        Args:
    336            expression_types: the expression type(s) to match.
    337            bfs: whether to search the AST using the BFS algorithm (DFS is used if false).
    338
    339        Returns:
    340            The node which matches the criteria or None if no such node was found.
    341        """
    342        return next(self.find_all(*expression_types, bfs=bfs), None)
    343
    344    def find_all(self, *expression_types: t.Type[E], bfs: bool = True) -> t.Iterator[E]:
    345        """
    346        Returns a generator object which visits all nodes in this tree and only
    347        yields those that match at least one of the specified expression types.
    348
    349        Args:
    350            expression_types: the expression type(s) to match.
    351            bfs: whether to search the AST using the BFS algorithm (DFS is used if false).
    352
    353        Returns:
    354            The generator object.
    355        """
    356        for expression, *_ in self.walk(bfs=bfs):
    357            if isinstance(expression, expression_types):
    358                yield expression
    359
    360    def find_ancestor(self, *expression_types: t.Type[E]) -> t.Optional[E]:
    361        """
    362        Returns a nearest parent matching expression_types.
    363
    364        Args:
    365            expression_types: the expression type(s) to match.
    366
    367        Returns:
    368            The parent node.
    369        """
    370        ancestor = self.parent
    371        while ancestor and not isinstance(ancestor, expression_types):
    372            ancestor = ancestor.parent
    373        return t.cast(E, ancestor)
    374
    375    @property
    376    def parent_select(self) -> t.Optional[Select]:
    377        """
    378        Returns the parent select statement.
    379        """
    380        return self.find_ancestor(Select)
    381
    382    @property
    383    def same_parent(self) -> bool:
    384        """Returns if the parent is the same class as itself."""
    385        return type(self.parent) is self.__class__
    386
    387    def root(self) -> Expression:
    388        """
    389        Returns the root expression of this tree.
    390        """
    391        expression = self
    392        while expression.parent:
    393            expression = expression.parent
    394        return expression
    395
    396    def walk(self, bfs=True, prune=None):
    397        """
    398        Returns a generator object which visits all nodes in this tree.
    399
    400        Args:
    401            bfs (bool): if set to True the BFS traversal order will be applied,
    402                otherwise the DFS traversal will be used instead.
    403            prune ((node, parent, arg_key) -> bool): callable that returns True if
    404                the generator should stop traversing this branch of the tree.
    405
    406        Returns:
    407            the generator object.
    408        """
    409        if bfs:
    410            yield from self.bfs(prune=prune)
    411        else:
    412            yield from self.dfs(prune=prune)
    413
    414    def dfs(self, parent=None, key=None, prune=None):
    415        """
    416        Returns a generator object which visits all nodes in this tree in
    417        the DFS (Depth-first) order.
    418
    419        Returns:
    420            The generator object.
    421        """
    422        parent = parent or self.parent
    423        yield self, parent, key
    424        if prune and prune(self, parent, key):
    425            return
    426
    427        for k, v in self.iter_expressions():
    428            yield from v.dfs(self, k, prune)
    429
    430    def bfs(self, prune=None):
    431        """
    432        Returns a generator object which visits all nodes in this tree in
    433        the BFS (Breadth-first) order.
    434
    435        Returns:
    436            The generator object.
    437        """
    438        queue = deque([(self, self.parent, None)])
    439
    440        while queue:
    441            item, parent, key = queue.popleft()
    442
    443            yield item, parent, key
    444            if prune and prune(item, parent, key):
    445                continue
    446
    447            for k, v in item.iter_expressions():
    448                queue.append((v, item, k))
    449
    450    def unnest(self):
    451        """
    452        Returns the first non parenthesis child or self.
    453        """
    454        expression = self
    455        while type(expression) is Paren:
    456            expression = expression.this
    457        return expression
    458
    459    def unalias(self):
    460        """
    461        Returns the inner expression if this is an Alias.
    462        """
    463        if isinstance(self, Alias):
    464            return self.this
    465        return self
    466
    467    def unnest_operands(self):
    468        """
    469        Returns unnested operands as a tuple.
    470        """
    471        return tuple(arg.unnest() for _, arg in self.iter_expressions())
    472
    473    def flatten(self, unnest=True):
    474        """
    475        Returns a generator which yields child nodes who's parents are the same class.
    476
    477        A AND B AND C -> [A, B, C]
    478        """
    479        for node, _, _ in self.dfs(prune=lambda n, p, *_: p and not type(n) is self.__class__):
    480            if not type(node) is self.__class__:
    481                yield node.unnest() if unnest else node
    482
    483    def __str__(self) -> str:
    484        return self.sql()
    485
    486    def __repr__(self) -> str:
    487        return self._to_s()
    488
    489    def sql(self, dialect: DialectType = None, **opts) -> str:
    490        """
    491        Returns SQL string representation of this tree.
    492
    493        Args:
    494            dialect: the dialect of the output SQL string (eg. "spark", "hive", "presto", "mysql").
    495            opts: other `sqlglot.generator.Generator` options.
    496
    497        Returns:
    498            The SQL string.
    499        """
    500        from sqlglot.dialects import Dialect
    501
    502        return Dialect.get_or_raise(dialect)().generate(self, **opts)
    503
    504    def _to_s(self, hide_missing: bool = True, level: int = 0) -> str:
    505        indent = "" if not level else "\n"
    506        indent += "".join(["  "] * level)
    507        left = f"({self.key.upper()} "
    508
    509        args: t.Dict[str, t.Any] = {
    510            k: ", ".join(
    511                v._to_s(hide_missing=hide_missing, level=level + 1)
    512                if hasattr(v, "_to_s")
    513                else str(v)
    514                for v in ensure_list(vs)
    515                if v is not None
    516            )
    517            for k, vs in self.args.items()
    518        }
    519        args["comments"] = self.comments
    520        args["type"] = self.type
    521        args = {k: v for k, v in args.items() if v or not hide_missing}
    522
    523        right = ", ".join(f"{k}: {v}" for k, v in args.items())
    524        right += ")"
    525
    526        return indent + left + right
    527
    528    def transform(self, fun, *args, copy=True, **kwargs):
    529        """
    530        Recursively visits all tree nodes (excluding already transformed ones)
    531        and applies the given transformation function to each node.
    532
    533        Args:
    534            fun (function): a function which takes a node as an argument and returns a
    535                new transformed node or the same node without modifications. If the function
    536                returns None, then the corresponding node will be removed from the syntax tree.
    537            copy (bool): if set to True a new tree instance is constructed, otherwise the tree is
    538                modified in place.
    539
    540        Returns:
    541            The transformed tree.
    542        """
    543        node = self.copy() if copy else self
    544        new_node = fun(node, *args, **kwargs)
    545
    546        if new_node is None or not isinstance(new_node, Expression):
    547            return new_node
    548        if new_node is not node:
    549            new_node.parent = node.parent
    550            return new_node
    551
    552        replace_children(new_node, lambda child: child.transform(fun, *args, copy=False, **kwargs))
    553        return new_node
    554
    555    @t.overload
    556    def replace(self, expression: E) -> E:
    557        ...
    558
    559    @t.overload
    560    def replace(self, expression: None) -> None:
    561        ...
    562
    563    def replace(self, expression):
    564        """
    565        Swap out this expression with a new expression.
    566
    567        For example::
    568
    569            >>> tree = Select().select("x").from_("tbl")
    570            >>> tree.find(Column).replace(Column(this="y"))
    571            (COLUMN this: y)
    572            >>> tree.sql()
    573            'SELECT y FROM tbl'
    574
    575        Args:
    576            expression: new node
    577
    578        Returns:
    579            The new expression or expressions.
    580        """
    581        if not self.parent:
    582            return expression
    583
    584        parent = self.parent
    585        self.parent = None
    586
    587        replace_children(parent, lambda child: expression if child is self else child)
    588        return expression
    589
    590    def pop(self: E) -> E:
    591        """
    592        Remove this expression from its AST.
    593
    594        Returns:
    595            The popped expression.
    596        """
    597        self.replace(None)
    598        return self
    599
    600    def assert_is(self, type_: t.Type[E]) -> E:
    601        """
    602        Assert that this `Expression` is an instance of `type_`.
    603
    604        If it is NOT an instance of `type_`, this raises an assertion error.
    605        Otherwise, this returns this expression.
    606
    607        Examples:
    608            This is useful for type security in chained expressions:
    609
    610            >>> import sqlglot
    611            >>> sqlglot.parse_one("SELECT x from y").assert_is(Select).select("z").sql()
    612            'SELECT x, z FROM y'
    613        """
    614        assert isinstance(self, type_)
    615        return self
    616
    617    def error_messages(self, args: t.Optional[t.Sequence] = None) -> t.List[str]:
    618        """
    619        Checks if this expression is valid (e.g. all mandatory args are set).
    620
    621        Args:
    622            args: a sequence of values that were used to instantiate a Func expression. This is used
    623                to check that the provided arguments don't exceed the function argument limit.
    624
    625        Returns:
    626            A list of error messages for all possible errors that were found.
    627        """
    628        errors: t.List[str] = []
    629
    630        for k in self.args:
    631            if k not in self.arg_types:
    632                errors.append(f"Unexpected keyword: '{k}' for {self.__class__}")
    633        for k, mandatory in self.arg_types.items():
    634            v = self.args.get(k)
    635            if mandatory and (v is None or (isinstance(v, list) and not v)):
    636                errors.append(f"Required keyword: '{k}' missing for {self.__class__}")
    637
    638        if (
    639            args
    640            and isinstance(self, Func)
    641            and len(args) > len(self.arg_types)
    642            and not self.is_var_len_args
    643        ):
    644            errors.append(
    645                f"The number of provided arguments ({len(args)}) is greater than "
    646                f"the maximum number of supported arguments ({len(self.arg_types)})"
    647            )
    648
    649        return errors
    650
    651    def dump(self):
    652        """
    653        Dump this Expression to a JSON-serializable dict.
    654        """
    655        from sqlglot.serde import dump
    656
    657        return dump(self)
    658
    659    @classmethod
    660    def load(cls, obj):
    661        """
    662        Load a dict (as returned by `Expression.dump`) into an Expression instance.
    663        """
    664        from sqlglot.serde import load
    665
    666        return load(obj)

The base class for all expressions in a syntax tree. Each Expression encapsulates any necessary context, such as its child expressions, their names (arg keys), and whether a given child expression is optional or not.

###### Attributes:

- key: a unique key for each class in the Expression hierarchy. This is useful for hashing and representing expressions as strings.
- arg_types: determines what arguments (child nodes) are supported by an expression. It maps arg keys to booleans that indicate whether the corresponding args are optional.
- parent: a reference to the parent expression (or None, in case of root expressions).
- arg_key: the arg key an expression is associated with, i.e. the name its parent expression uses to refer to it.
- comments: a list of comments that are associated with a given expression. This is used in order to preserve comments when transpiling SQL code.
- type: the `DataType` type of an expression. This is inferred by the optimizer, in order to enable some transformations that require type information.
- meta: a dictionary that can be used to store useful metadata for a given expression.

###### Example:

>     >>> class Foo(Expression):
>     ...     arg_types = {"this": True, "expression": False}

> The above definition informs us that Foo is an Expression that requires an argument called "this" and may also optionally receive an argument called "expression".

###### Arguments:

- args: a mapping used for retrieving the arguments of an expression, given their arg keys.

Expression(**args: Any) View Source

     91    def __init__(self, **args: t.Any):
     92        self.args: t.Dict[str, t.Any] = args
     93        self.parent: t.Optional[Expression] = None
     94        self.arg_key: t.Optional[str] = None
     95        self.comments: t.Optional[t.List[str]] = None
     96        self._type: t.Optional[DataType] = None
     97        self._meta: t.Optional[t.Dict[str, t.Any]] = None
     98        self._hash: t.Optional[int] = None
     99
    100        for arg_key, value in self.args.items():
    101            self._set_parent(arg_key, value)

key = 'expression'
arg_types = {'this': True}
args: Dict[str, Any]
parent: Optional[Expression]
arg_key: Optional[str]
comments: Optional[List[str]]
hashable_args: Any
this

Retrieves the argument with key "this".

expression

Retrieves the argument with key "expression".

expressions

Retrieves the argument with key "expressions".

def text(self, key) -> str: View Source

    141    def text(self, key) -> str:
    142        """
    143        Returns a textual representation of the argument corresponding to "key". This can only be used
    144        for args that are strings or leaf Expression instances, such as identifiers and literals.
    145        """
    146        field = self.args.get(key)
    147        if isinstance(field, str):
    148            return field
    149        if isinstance(field, (Identifier, Literal, Var)):
    150            return field.this
    151        if isinstance(field, (Star, Null)):
    152            return field.name
    153        return ""

Returns a textual representation of the argument corresponding to "key". This can only be used for args that are strings or leaf Expression instances, such as identifiers and literals.

is_string: bool

Checks whether a Literal expression is a string.

is_number: bool

Checks whether a Literal expression is a number.

is_int: bool

Checks whether a Literal expression is an integer.

is_star: bool

Checks whether an expression is a star.

alias: str

Returns the alias of the expression, or an empty string if it's not aliased.

alias_column_names: List[str]
name: str
alias_or_name: str
output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

type: Optional[DataType]
meta: Dict[str, Any]
def copy(self): View Source

    258    def copy(self):
    259        """
    260        Returns a deep copy of the expression.
    261        """
    262        new = deepcopy(self)
    263        new.parent = self.parent
    264        return new

Returns a deep copy of the expression.

def add_comments(self, comments: Optional[List[str]]) -> None: View Source

    266    def add_comments(self, comments: t.Optional[t.List[str]]) -> None:
    267        if self.comments is None:
    268            self.comments = []
    269        if comments:
    270            self.comments.extend(comments)

def append(self, arg_key: str, value: Any) -> None: View Source

    272    def append(self, arg_key: str, value: t.Any) -> None:
    273        """
    274        Appends value to arg_key if it's a list or sets it as a new list.
    275
    276        Args:
    277            arg_key (str): name of the list expression arg
    278            value (Any): value to append to the list
    279        """
    280        if not isinstance(self.args.get(arg_key), list):
    281            self.args[arg_key] = []
    282        self.args[arg_key].append(value)
    283        self._set_parent(arg_key, value)

Appends value to arg_key if it's a list or sets it as a new list.

###### Arguments:

- arg_key (str): name of the list expression arg
- value (Any): value to append to the list

def set(self, arg_key: str, value: Any) -> None: View Source

    285    def set(self, arg_key: str, value: t.Any) -> None:
    286        """
    287        Sets arg_key to value.
    288
    289        Args:
    290            arg_key: name of the expression arg.
    291            value: value to set the arg to.
    292        """
    293        if value is None:
    294            self.args.pop(arg_key, None)
    295            return
    296
    297        self.args[arg_key] = value
    298        self._set_parent(arg_key, value)

Sets arg_key to value.

###### Arguments:

- arg_key: name of the expression arg.
- value: value to set the arg to.

depth: int

Returns the depth of this tree.

def iter_expressions(self) -> Iterator[Tuple[str, Expression]]: View Source

    319    def iter_expressions(self) -> t.Iterator[t.Tuple[str, Expression]]:
    320        """Yields the key and expression for all arguments, exploding list args."""
    321        for k, vs in self.args.items():
    322            if type(vs) is list:
    323                for v in vs:
    324                    if hasattr(v, "parent"):
    325                        yield k, v
    326            else:
    327                if hasattr(vs, "parent"):
    328                    yield k, vs

Yields the key and expression for all arguments, exploding list args.

def find(self, *expression_types: Type[~E], bfs: bool = True) -> Optional[~E]: View Source

    330    def find(self, *expression_types: t.Type[E], bfs: bool = True) -> t.Optional[E]:
    331        """
    332        Returns the first node in this tree which matches at least one of
    333        the specified types.
    334
    335        Args:
    336            expression_types: the expression type(s) to match.
    337            bfs: whether to search the AST using the BFS algorithm (DFS is used if false).
    338
    339        Returns:
    340            The node which matches the criteria or None if no such node was found.
    341        """
    342        return next(self.find_all(*expression_types, bfs=bfs), None)

Returns the first node in this tree which matches at least one of the specified types.

###### Arguments:

- expression_types: the expression type(s) to match.
- bfs: whether to search the AST using the BFS algorithm (DFS is used if false).

###### Returns:

> The node which matches the criteria or None if no such node was found.

def find_all(self, *expression_types: Type[~E], bfs: bool = True) -> Iterator[~E]: View Source

    344    def find_all(self, *expression_types: t.Type[E], bfs: bool = True) -> t.Iterator[E]:
    345        """
    346        Returns a generator object which visits all nodes in this tree and only
    347        yields those that match at least one of the specified expression types.
    348
    349        Args:
    350            expression_types: the expression type(s) to match.
    351            bfs: whether to search the AST using the BFS algorithm (DFS is used if false).
    352
    353        Returns:
    354            The generator object.
    355        """
    356        for expression, *_ in self.walk(bfs=bfs):
    357            if isinstance(expression, expression_types):
    358                yield expression

Returns a generator object which visits all nodes in this tree and only yields those that match at least one of the specified expression types.

###### Arguments:

- expression_types: the expression type(s) to match.
- bfs: whether to search the AST using the BFS algorithm (DFS is used if false).

###### Returns:

> The generator object.

def find_ancestor(self, *expression_types: Type[~E]) -> Optional[~E]: View Source

    360    def find_ancestor(self, *expression_types: t.Type[E]) -> t.Optional[E]:
    361        """
    362        Returns a nearest parent matching expression_types.
    363
    364        Args:
    365            expression_types: the expression type(s) to match.
    366
    367        Returns:
    368            The parent node.
    369        """
    370        ancestor = self.parent
    371        while ancestor and not isinstance(ancestor, expression_types):
    372            ancestor = ancestor.parent
    373        return t.cast(E, ancestor)

Returns a nearest parent matching expression_types.

###### Arguments:

- expression_types: the expression type(s) to match.

###### Returns:

> The parent node.

parent_select: Optional[Select]

Returns the parent select statement.

same_parent: bool

Returns if the parent is the same class as itself.

def root(self) -> Expression: View Source

    387    def root(self) -> Expression:
    388        """
    389        Returns the root expression of this tree.
    390        """
    391        expression = self
    392        while expression.parent:
    393            expression = expression.parent
    394        return expression

Returns the root expression of this tree.

def walk(self, bfs=True, prune=None): View Source

    396    def walk(self, bfs=True, prune=None):
    397        """
    398        Returns a generator object which visits all nodes in this tree.
    399
    400        Args:
    401            bfs (bool): if set to True the BFS traversal order will be applied,
    402                otherwise the DFS traversal will be used instead.
    403            prune ((node, parent, arg_key) -> bool): callable that returns True if
    404                the generator should stop traversing this branch of the tree.
    405
    406        Returns:
    407            the generator object.
    408        """
    409        if bfs:
    410            yield from self.bfs(prune=prune)
    411        else:
    412            yield from self.dfs(prune=prune)

Returns a generator object which visits all nodes in this tree.

###### Arguments:

- bfs (bool): if set to True the BFS traversal order will be applied, otherwise the DFS traversal will be used instead.
- prune ((node, parent, arg_key) -> bool): callable that returns True if the generator should stop traversing this branch of the tree.

###### Returns:

> the generator object.

def dfs(self, parent=None, key=None, prune=None): View Source

    414    def dfs(self, parent=None, key=None, prune=None):
    415        """
    416        Returns a generator object which visits all nodes in this tree in
    417        the DFS (Depth-first) order.
    418
    419        Returns:
    420            The generator object.
    421        """
    422        parent = parent or self.parent
    423        yield self, parent, key
    424        if prune and prune(self, parent, key):
    425            return
    426
    427        for k, v in self.iter_expressions():
    428            yield from v.dfs(self, k, prune)

Returns a generator object which visits all nodes in this tree in the DFS (Depth-first) order.

###### Returns:

> The generator object.

def bfs(self, prune=None): View Source

    430    def bfs(self, prune=None):
    431        """
    432        Returns a generator object which visits all nodes in this tree in
    433        the BFS (Breadth-first) order.
    434
    435        Returns:
    436            The generator object.
    437        """
    438        queue = deque([(self, self.parent, None)])
    439
    440        while queue:
    441            item, parent, key = queue.popleft()
    442
    443            yield item, parent, key
    444            if prune and prune(item, parent, key):
    445                continue
    446
    447            for k, v in item.iter_expressions():
    448                queue.append((v, item, k))

Returns a generator object which visits all nodes in this tree in the BFS (Breadth-first) order.

###### Returns:

> The generator object.

def unnest(self): View Source

    450    def unnest(self):
    451        """
    452        Returns the first non parenthesis child or self.
    453        """
    454        expression = self
    455        while type(expression) is Paren:
    456            expression = expression.this
    457        return expression

Returns the first non parenthesis child or self.

def unalias(self): View Source

    459    def unalias(self):
    460        """
    461        Returns the inner expression if this is an Alias.
    462        """
    463        if isinstance(self, Alias):
    464            return self.this
    465        return self

Returns the inner expression if this is an Alias.

def unnest_operands(self): View Source

    467    def unnest_operands(self):
    468        """
    469        Returns unnested operands as a tuple.
    470        """
    471        return tuple(arg.unnest() for _, arg in self.iter_expressions())

Returns unnested operands as a tuple.

def flatten(self, unnest=True): View Source

    473    def flatten(self, unnest=True):
    474        """
    475        Returns a generator which yields child nodes who's parents are the same class.
    476
    477        A AND B AND C -> [A, B, C]
    478        """
    479        for node, _, _ in self.dfs(prune=lambda n, p, *_: p and not type(n) is self.__class__):
    480            if not type(node) is self.__class__:
    481                yield node.unnest() if unnest else node

Returns a generator which yields child nodes who's parents are the same class.

A AND B AND C -> [A, B, C]

def sql( self, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> str: View Source

    489    def sql(self, dialect: DialectType = None, **opts) -> str:
    490        """
    491        Returns SQL string representation of this tree.
    492
    493        Args:
    494            dialect: the dialect of the output SQL string (eg. "spark", "hive", "presto", "mysql").
    495            opts: other `sqlglot.generator.Generator` options.
    496
    497        Returns:
    498            The SQL string.
    499        """
    500        from sqlglot.dialects import Dialect
    501
    502        return Dialect.get_or_raise(dialect)().generate(self, **opts)

Returns SQL string representation of this tree.

###### Arguments:

- dialect: the dialect of the output SQL string (eg. "spark", "hive", "presto", "mysql").
- opts: other `sqlglot.generator.Generator` options.

###### Returns:

> The SQL string.

def transform(self, fun, *args, copy=True, **kwargs): View Source

    528    def transform(self, fun, *args, copy=True, **kwargs):
    529        """
    530        Recursively visits all tree nodes (excluding already transformed ones)
    531        and applies the given transformation function to each node.
    532
    533        Args:
    534            fun (function): a function which takes a node as an argument and returns a
    535                new transformed node or the same node without modifications. If the function
    536                returns None, then the corresponding node will be removed from the syntax tree.
    537            copy (bool): if set to True a new tree instance is constructed, otherwise the tree is
    538                modified in place.
    539
    540        Returns:
    541            The transformed tree.
    542        """
    543        node = self.copy() if copy else self
    544        new_node = fun(node, *args, **kwargs)
    545
    546        if new_node is None or not isinstance(new_node, Expression):
    547            return new_node
    548        if new_node is not node:
    549            new_node.parent = node.parent
    550            return new_node
    551
    552        replace_children(new_node, lambda child: child.transform(fun, *args, copy=False, **kwargs))
    553        return new_node

Recursively visits all tree nodes (excluding already transformed ones) and applies the given transformation function to each node.

###### Arguments:

- fun (function): a function which takes a node as an argument and returns a new transformed node or the same node without modifications. If the function returns None, then the corresponding node will be removed from the syntax tree.
- copy (bool): if set to True a new tree instance is constructed, otherwise the tree is modified in place.

###### Returns:

> The transformed tree.

def replace(self, expression): View Source

    563    def replace(self, expression):
    564        """
    565        Swap out this expression with a new expression.
    566
    567        For example::
    568
    569            >>> tree = Select().select("x").from_("tbl")
    570            >>> tree.find(Column).replace(Column(this="y"))
    571            (COLUMN this: y)
    572            >>> tree.sql()
    573            'SELECT y FROM tbl'
    574
    575        Args:
    576            expression: new node
    577
    578        Returns:
    579            The new expression or expressions.
    580        """
    581        if not self.parent:
    582            return expression
    583
    584        parent = self.parent
    585        self.parent = None
    586
    587        replace_children(parent, lambda child: expression if child is self else child)
    588        return expression

Swap out this expression with a new expression.

For example::

    >>> tree = Select().select("x").from_("tbl")
    >>> tree.find(Column).replace(Column(this="y"))
    (COLUMN this: y)
    >>> tree.sql()
    'SELECT y FROM tbl'

###### Arguments:

- expression: new node

###### Returns:

> The new expression or expressions.

def pop(self: ~E) -> ~E: View Source

    590    def pop(self: E) -> E:
    591        """
    592        Remove this expression from its AST.
    593
    594        Returns:
    595            The popped expression.
    596        """
    597        self.replace(None)
    598        return self

Remove this expression from its AST.

###### Returns:

> The popped expression.

def assert_is(self, type_: Type[~E]) -> ~E: View Source

    600    def assert_is(self, type_: t.Type[E]) -> E:
    601        """
    602        Assert that this `Expression` is an instance of `type_`.
    603
    604        If it is NOT an instance of `type_`, this raises an assertion error.
    605        Otherwise, this returns this expression.
    606
    607        Examples:
    608            This is useful for type security in chained expressions:
    609
    610            >>> import sqlglot
    611            >>> sqlglot.parse_one("SELECT x from y").assert_is(Select).select("z").sql()
    612            'SELECT x, z FROM y'
    613        """
    614        assert isinstance(self, type_)
    615        return self

Assert that this `Expression` is an instance of `type_`.

If it is NOT an instance of `type_`, this raises an assertion error. Otherwise, this returns this expression.

###### Examples:

> This is useful for type security in chained expressions:

>     >>> import sqlglot
>     >>> sqlglot.parse_one("SELECT x from y").assert_is(Select).select("z").sql()
>     'SELECT x, z FROM y'

def error_messages(self, args: Optional[Sequence] = None) -> List[str]: View Source

    617    def error_messages(self, args: t.Optional[t.Sequence] = None) -> t.List[str]:
    618        """
    619        Checks if this expression is valid (e.g. all mandatory args are set).
    620
    621        Args:
    622            args: a sequence of values that were used to instantiate a Func expression. This is used
    623                to check that the provided arguments don't exceed the function argument limit.
    624
    625        Returns:
    626            A list of error messages for all possible errors that were found.
    627        """
    628        errors: t.List[str] = []
    629
    630        for k in self.args:
    631            if k not in self.arg_types:
    632                errors.append(f"Unexpected keyword: '{k}' for {self.__class__}")
    633        for k, mandatory in self.arg_types.items():
    634            v = self.args.get(k)
    635            if mandatory and (v is None or (isinstance(v, list) and not v)):
    636                errors.append(f"Required keyword: '{k}' missing for {self.__class__}")
    637
    638        if (
    639            args
    640            and isinstance(self, Func)
    641            and len(args) > len(self.arg_types)
    642            and not self.is_var_len_args
    643        ):
    644            errors.append(
    645                f"The number of provided arguments ({len(args)}) is greater than "
    646                f"the maximum number of supported arguments ({len(self.arg_types)})"
    647            )
    648
    649        return errors

Checks if this expression is valid (e.g. all mandatory args are set).

###### Arguments:

- args: a sequence of values that were used to instantiate a Func expression. This is used to check that the provided arguments don't exceed the function argument limit.

###### Returns:

> A list of error messages for all possible errors that were found.

def dump(self): View Source

    651    def dump(self):
    652        """
    653        Dump this Expression to a JSON-serializable dict.
    654        """
    655        from sqlglot.serde import dump
    656
    657        return dump(self)

Dump this Expression to a JSON-serializable dict.

@classmethod
def load(cls, obj): View Source

    659    @classmethod
    660    def load(cls, obj):
    661        """
    662        Load a dict (as returned by `Expression.dump`) into an Expression instance.
    663        """
    664        from sqlglot.serde import load
    665
    666        return load(obj)

Load a dict (as returned by `Expression.dump`) into an Expression instance.

IntoType = typing.Union[str, typing.Type[Expression], typing.Collection[typing.Union[str, typing.Type[Expression]]]]
ExpOrStr = typing.Union[str, Expression]
class Condition(Expression): View Source

    677class Condition(Expression):
    678    def and_(
    679        self,
    680        *expressions: t.Optional[ExpOrStr],
    681        dialect: DialectType = None,
    682        copy: bool = True,
    683        **opts,
    684    ) -> Condition:
    685        """
    686        AND this condition with one or multiple expressions.
    687
    688        Example:
    689            >>> condition("x=1").and_("y=1").sql()
    690            'x = 1 AND y = 1'
    691
    692        Args:
    693            *expressions: the SQL code strings to parse.
    694                If an `Expression` instance is passed, it will be used as-is.
    695            dialect: the dialect used to parse the input expression.
    696            copy: whether or not to copy the involved expressions (only applies to Expressions).
    697            opts: other options to use to parse the input expressions.
    698
    699        Returns:
    700            The new And condition.
    701        """
    702        return and_(self, *expressions, dialect=dialect, copy=copy, **opts)
    703
    704    def or_(
    705        self,
    706        *expressions: t.Optional[ExpOrStr],
    707        dialect: DialectType = None,
    708        copy: bool = True,
    709        **opts,
    710    ) -> Condition:
    711        """
    712        OR this condition with one or multiple expressions.
    713
    714        Example:
    715            >>> condition("x=1").or_("y=1").sql()
    716            'x = 1 OR y = 1'
    717
    718        Args:
    719            *expressions: the SQL code strings to parse.
    720                If an `Expression` instance is passed, it will be used as-is.
    721            dialect: the dialect used to parse the input expression.
    722            copy: whether or not to copy the involved expressions (only applies to Expressions).
    723            opts: other options to use to parse the input expressions.
    724
    725        Returns:
    726            The new Or condition.
    727        """
    728        return or_(self, *expressions, dialect=dialect, copy=copy, **opts)
    729
    730    def not_(self, copy: bool = True):
    731        """
    732        Wrap this condition with NOT.
    733
    734        Example:
    735            >>> condition("x=1").not_().sql()
    736            'NOT x = 1'
    737
    738        Args:
    739            copy: whether or not to copy this object.
    740
    741        Returns:
    742            The new Not instance.
    743        """
    744        return not_(self, copy=copy)
    745
    746    def as_(
    747        self,
    748        alias: str | Identifier,
    749        quoted: t.Optional[bool] = None,
    750        dialect: DialectType = None,
    751        copy: bool = True,
    752        **opts,
    753    ) -> Alias:
    754        return alias_(self, alias, quoted=quoted, dialect=dialect, copy=copy, **opts)
    755
    756    def _binop(self, klass: t.Type[E], other: t.Any, reverse: bool = False) -> E:
    757        this = self.copy()
    758        other = convert(other, copy=True)
    759        if not isinstance(this, klass) and not isinstance(other, klass):
    760            this = _wrap(this, Binary)
    761            other = _wrap(other, Binary)
    762        if reverse:
    763            return klass(this=other, expression=this)
    764        return klass(this=this, expression=other)
    765
    766    def __getitem__(self, other: ExpOrStr | t.Tuple[ExpOrStr]):
    767        return Bracket(
    768            this=self.copy(), expressions=[convert(e, copy=True) for e in ensure_list(other)]
    769        )
    770
    771    def isin(
    772        self,
    773        *expressions: t.Any,
    774        query: t.Optional[ExpOrStr] = None,
    775        unnest: t.Optional[ExpOrStr] | t.Collection[ExpOrStr] = None,
    776        copy: bool = True,
    777        **opts,
    778    ) -> In:
    779        return In(
    780            this=maybe_copy(self, copy),
    781            expressions=[convert(e, copy=copy) for e in expressions],
    782            query=maybe_parse(query, copy=copy, **opts) if query else None,
    783            unnest=Unnest(
    784                expressions=[
    785                    maybe_parse(t.cast(ExpOrStr, e), copy=copy, **opts) for e in ensure_list(unnest)
    786                ]
    787            )
    788            if unnest
    789            else None,
    790        )
    791
    792    def between(self, low: t.Any, high: t.Any, copy: bool = True, **opts) -> Between:
    793        return Between(
    794            this=maybe_copy(self, copy),
    795            low=convert(low, copy=copy, **opts),
    796            high=convert(high, copy=copy, **opts),
    797        )
    798
    799    def is_(self, other: ExpOrStr) -> Is:
    800        return self._binop(Is, other)
    801
    802    def like(self, other: ExpOrStr) -> Like:
    803        return self._binop(Like, other)
    804
    805    def ilike(self, other: ExpOrStr) -> ILike:
    806        return self._binop(ILike, other)
    807
    808    def eq(self, other: t.Any) -> EQ:
    809        return self._binop(EQ, other)
    810
    811    def neq(self, other: t.Any) -> NEQ:
    812        return self._binop(NEQ, other)
    813
    814    def rlike(self, other: ExpOrStr) -> RegexpLike:
    815        return self._binop(RegexpLike, other)
    816
    817    def __lt__(self, other: t.Any) -> LT:
    818        return self._binop(LT, other)
    819
    820    def __le__(self, other: t.Any) -> LTE:
    821        return self._binop(LTE, other)
    822
    823    def __gt__(self, other: t.Any) -> GT:
    824        return self._binop(GT, other)
    825
    826    def __ge__(self, other: t.Any) -> GTE:
    827        return self._binop(GTE, other)
    828
    829    def __add__(self, other: t.Any) -> Add:
    830        return self._binop(Add, other)
    831
    832    def __radd__(self, other: t.Any) -> Add:
    833        return self._binop(Add, other, reverse=True)
    834
    835    def __sub__(self, other: t.Any) -> Sub:
    836        return self._binop(Sub, other)
    837
    838    def __rsub__(self, other: t.Any) -> Sub:
    839        return self._binop(Sub, other, reverse=True)
    840
    841    def __mul__(self, other: t.Any) -> Mul:
    842        return self._binop(Mul, other)
    843
    844    def __rmul__(self, other: t.Any) -> Mul:
    845        return self._binop(Mul, other, reverse=True)
    846
    847    def __truediv__(self, other: t.Any) -> Div:
    848        return self._binop(Div, other)
    849
    850    def __rtruediv__(self, other: t.Any) -> Div:
    851        return self._binop(Div, other, reverse=True)
    852
    853    def __floordiv__(self, other: t.Any) -> IntDiv:
    854        return self._binop(IntDiv, other)
    855
    856    def __rfloordiv__(self, other: t.Any) -> IntDiv:
    857        return self._binop(IntDiv, other, reverse=True)
    858
    859    def __mod__(self, other: t.Any) -> Mod:
    860        return self._binop(Mod, other)
    861
    862    def __rmod__(self, other: t.Any) -> Mod:
    863        return self._binop(Mod, other, reverse=True)
    864
    865    def __pow__(self, other: t.Any) -> Pow:
    866        return self._binop(Pow, other)
    867
    868    def __rpow__(self, other: t.Any) -> Pow:
    869        return self._binop(Pow, other, reverse=True)
    870
    871    def __and__(self, other: t.Any) -> And:
    872        return self._binop(And, other)
    873
    874    def __rand__(self, other: t.Any) -> And:
    875        return self._binop(And, other, reverse=True)
    876
    877    def __or__(self, other: t.Any) -> Or:
    878        return self._binop(Or, other)
    879
    880    def __ror__(self, other: t.Any) -> Or:
    881        return self._binop(Or, other, reverse=True)
    882
    883    def __neg__(self) -> Neg:
    884        return Neg(this=_wrap(self.copy(), Binary))
    885
    886    def __invert__(self) -> Not:
    887        return not_(self.copy())

def and_( self, *expressions: Union[str, Expression, NoneType], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Condition: View Source

    678    def and_(
    679        self,
    680        *expressions: t.Optional[ExpOrStr],
    681        dialect: DialectType = None,
    682        copy: bool = True,
    683        **opts,
    684    ) -> Condition:
    685        """
    686        AND this condition with one or multiple expressions.
    687
    688        Example:
    689            >>> condition("x=1").and_("y=1").sql()
    690            'x = 1 AND y = 1'
    691
    692        Args:
    693            *expressions: the SQL code strings to parse.
    694                If an `Expression` instance is passed, it will be used as-is.
    695            dialect: the dialect used to parse the input expression.
    696            copy: whether or not to copy the involved expressions (only applies to Expressions).
    697            opts: other options to use to parse the input expressions.
    698
    699        Returns:
    700            The new And condition.
    701        """
    702        return and_(self, *expressions, dialect=dialect, copy=copy, **opts)

AND this condition with one or multiple expressions.

###### Example:

>     >>> condition("x=1").and_("y=1").sql()
>     'x = 1 AND y = 1'

###### Arguments:

- *expressions: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is.
- dialect: the dialect used to parse the input expression.
- copy: whether or not to copy the involved expressions (only applies to Expressions).
- opts: other options to use to parse the input expressions.

###### Returns:

> The new And condition.

def or_( self, *expressions: Union[str, Expression, NoneType], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Condition: View Source

    704    def or_(
    705        self,
    706        *expressions: t.Optional[ExpOrStr],
    707        dialect: DialectType = None,
    708        copy: bool = True,
    709        **opts,
    710    ) -> Condition:
    711        """
    712        OR this condition with one or multiple expressions.
    713
    714        Example:
    715            >>> condition("x=1").or_("y=1").sql()
    716            'x = 1 OR y = 1'
    717
    718        Args:
    719            *expressions: the SQL code strings to parse.
    720                If an `Expression` instance is passed, it will be used as-is.
    721            dialect: the dialect used to parse the input expression.
    722            copy: whether or not to copy the involved expressions (only applies to Expressions).
    723            opts: other options to use to parse the input expressions.
    724
    725        Returns:
    726            The new Or condition.
    727        """
    728        return or_(self, *expressions, dialect=dialect, copy=copy, **opts)

OR this condition with one or multiple expressions.

###### Example:

>     >>> condition("x=1").or_("y=1").sql()
>     'x = 1 OR y = 1'

###### Arguments:

- *expressions: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is.
- dialect: the dialect used to parse the input expression.
- copy: whether or not to copy the involved expressions (only applies to Expressions).
- opts: other options to use to parse the input expressions.

###### Returns:

> The new Or condition.

def not_(self, copy: bool = True): View Source

    730    def not_(self, copy: bool = True):
    731        """
    732        Wrap this condition with NOT.
    733
    734        Example:
    735            >>> condition("x=1").not_().sql()
    736            'NOT x = 1'
    737
    738        Args:
    739            copy: whether or not to copy this object.
    740
    741        Returns:
    742            The new Not instance.
    743        """
    744        return not_(self, copy=copy)

Wrap this condition with NOT.

###### Example:

>     >>> condition("x=1").not_().sql()
>     'NOT x = 1'

###### Arguments:

- copy: whether or not to copy this object.

###### Returns:

> The new Not instance.

def as_( self, alias: str | Identifier, quoted: Optional[bool] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Alias: View Source

    746    def as_(
    747        self,
    748        alias: str | Identifier,
    749        quoted: t.Optional[bool] = None,
    750        dialect: DialectType = None,
    751        copy: bool = True,
    752        **opts,
    753    ) -> Alias:
    754        return alias_(self, alias, quoted=quoted, dialect=dialect, copy=copy, **opts)

def isin( self, *expressions: Any, query: Union[str, Expression, NoneType] = None, unnest: Union[str, Expression, NoneType, Collection[Union[str, Expression]]] = None, copy: bool = True, **opts) -> In: View Source

    771    def isin(
    772        self,
    773        *expressions: t.Any,
    774        query: t.Optional[ExpOrStr] = None,
    775        unnest: t.Optional[ExpOrStr] | t.Collection[ExpOrStr] = None,
    776        copy: bool = True,
    777        **opts,
    778    ) -> In:
    779        return In(
    780            this=maybe_copy(self, copy),
    781            expressions=[convert(e, copy=copy) for e in expressions],
    782            query=maybe_parse(query, copy=copy, **opts) if query else None,
    783            unnest=Unnest(
    784                expressions=[
    785                    maybe_parse(t.cast(ExpOrStr, e), copy=copy, **opts) for e in ensure_list(unnest)
    786                ]
    787            )
    788            if unnest
    789            else None,
    790        )

def between( self, low: Any, high: Any, copy: bool = True, **opts) -> Between: View Source

    792    def between(self, low: t.Any, high: t.Any, copy: bool = True, **opts) -> Between:
    793        return Between(
    794            this=maybe_copy(self, copy),
    795            low=convert(low, copy=copy, **opts),
    796            high=convert(high, copy=copy, **opts),
    797        )

def is_( self, other: Union[str, Expression]) -> Is: View Source

    799    def is_(self, other: ExpOrStr) -> Is:
    800        return self._binop(Is, other)

def like( self, other: Union[str, Expression]) -> Like: View Source

    802    def like(self, other: ExpOrStr) -> Like:
    803        return self._binop(Like, other)

def ilike( self, other: Union[str, Expression]) -> ILike: View Source

    805    def ilike(self, other: ExpOrStr) -> ILike:
    806        return self._binop(ILike, other)

def eq(self, other: Any) -> EQ: View Source

    808    def eq(self, other: t.Any) -> EQ:
    809        return self._binop(EQ, other)

def neq(self, other: Any) -> NEQ: View Source

    811    def neq(self, other: t.Any) -> NEQ:
    812        return self._binop(NEQ, other)

def rlike( self, other: Union[str, Expression]) -> RegexpLike: View Source

    814    def rlike(self, other: ExpOrStr) -> RegexpLike:
    815        return self._binop(RegexpLike, other)

key = 'condition'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Predicate(Condition): View Source

    890class Predicate(Condition):
    891    """Relationships like x = y, x > 1, x >= y."""

Relationships like x = y, x > 1, x >= y.

key = 'predicate'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DerivedTable(Expression): View Source

    894class DerivedTable(Expression):
    895    @property
    896    def selects(self) -> t.List[Expression]:
    897        return self.this.selects if isinstance(self.this, Subqueryable) else []
    898
    899    @property
    900    def named_selects(self) -> t.List[str]:
    901        return [select.output_name for select in self.selects]

selects: List[Expression]
named_selects: List[str]
key = 'derivedtable'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Unionable(Expression): View Source

    904class Unionable(Expression):
    905    def union(
    906        self, expression: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    907    ) -> Unionable:
    908        """
    909        Builds a UNION expression.
    910
    911        Example:
    912            >>> import sqlglot
    913            >>> sqlglot.parse_one("SELECT * FROM foo").union("SELECT * FROM bla").sql()
    914            'SELECT * FROM foo UNION SELECT * FROM bla'
    915
    916        Args:
    917            expression: the SQL code string.
    918                If an `Expression` instance is passed, it will be used as-is.
    919            distinct: set the DISTINCT flag if and only if this is true.
    920            dialect: the dialect used to parse the input expression.
    921            opts: other options to use to parse the input expressions.
    922
    923        Returns:
    924            The new Union expression.
    925        """
    926        return union(left=self, right=expression, distinct=distinct, dialect=dialect, **opts)
    927
    928    def intersect(
    929        self, expression: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    930    ) -> Unionable:
    931        """
    932        Builds an INTERSECT expression.
    933
    934        Example:
    935            >>> import sqlglot
    936            >>> sqlglot.parse_one("SELECT * FROM foo").intersect("SELECT * FROM bla").sql()
    937            'SELECT * FROM foo INTERSECT SELECT * FROM bla'
    938
    939        Args:
    940            expression: the SQL code string.
    941                If an `Expression` instance is passed, it will be used as-is.
    942            distinct: set the DISTINCT flag if and only if this is true.
    943            dialect: the dialect used to parse the input expression.
    944            opts: other options to use to parse the input expressions.
    945
    946        Returns:
    947            The new Intersect expression.
    948        """
    949        return intersect(left=self, right=expression, distinct=distinct, dialect=dialect, **opts)
    950
    951    def except_(
    952        self, expression: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    953    ) -> Unionable:
    954        """
    955        Builds an EXCEPT expression.
    956
    957        Example:
    958            >>> import sqlglot
    959            >>> sqlglot.parse_one("SELECT * FROM foo").except_("SELECT * FROM bla").sql()
    960            'SELECT * FROM foo EXCEPT SELECT * FROM bla'
    961
    962        Args:
    963            expression: the SQL code string.
    964                If an `Expression` instance is passed, it will be used as-is.
    965            distinct: set the DISTINCT flag if and only if this is true.
    966            dialect: the dialect used to parse the input expression.
    967            opts: other options to use to parse the input expressions.
    968
    969        Returns:
    970            The new Except expression.
    971        """
    972        return except_(left=self, right=expression, distinct=distinct, dialect=dialect, **opts)

def union( self, expression: Union[str, Expression], distinct: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Unionable: View Source

    905    def union(
    906        self, expression: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    907    ) -> Unionable:
    908        """
    909        Builds a UNION expression.
    910
    911        Example:
    912            >>> import sqlglot
    913            >>> sqlglot.parse_one("SELECT * FROM foo").union("SELECT * FROM bla").sql()
    914            'SELECT * FROM foo UNION SELECT * FROM bla'
    915
    916        Args:
    917            expression: the SQL code string.
    918                If an `Expression` instance is passed, it will be used as-is.
    919            distinct: set the DISTINCT flag if and only if this is true.
    920            dialect: the dialect used to parse the input expression.
    921            opts: other options to use to parse the input expressions.
    922
    923        Returns:
    924            The new Union expression.
    925        """
    926        return union(left=self, right=expression, distinct=distinct, dialect=dialect, **opts)

Builds a UNION expression.

###### Example:

>     >>> import sqlglot
>     >>> sqlglot.parse_one("SELECT * FROM foo").union("SELECT * FROM bla").sql()
>     'SELECT * FROM foo UNION SELECT * FROM bla'

###### Arguments:

- expression: the SQL code string. If an `Expression` instance is passed, it will be used as-is.
- distinct: set the DISTINCT flag if and only if this is true.
- dialect: the dialect used to parse the input expression.
- opts: other options to use to parse the input expressions.

###### Returns:

> The new Union expression.

def intersect( self, expression: Union[str, Expression], distinct: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Unionable: View Source

    928    def intersect(
    929        self, expression: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    930    ) -> Unionable:
    931        """
    932        Builds an INTERSECT expression.
    933
    934        Example:
    935            >>> import sqlglot
    936            >>> sqlglot.parse_one("SELECT * FROM foo").intersect("SELECT * FROM bla").sql()
    937            'SELECT * FROM foo INTERSECT SELECT * FROM bla'
    938
    939        Args:
    940            expression: the SQL code string.
    941                If an `Expression` instance is passed, it will be used as-is.
    942            distinct: set the DISTINCT flag if and only if this is true.
    943            dialect: the dialect used to parse the input expression.
    944            opts: other options to use to parse the input expressions.
    945
    946        Returns:
    947            The new Intersect expression.
    948        """
    949        return intersect(left=self, right=expression, distinct=distinct, dialect=dialect, **opts)

Builds an INTERSECT expression.

###### Example:

>     >>> import sqlglot
>     >>> sqlglot.parse_one("SELECT * FROM foo").intersect("SELECT * FROM bla").sql()
>     'SELECT * FROM foo INTERSECT SELECT * FROM bla'

###### Arguments:

- expression: the SQL code string. If an `Expression` instance is passed, it will be used as-is.
- distinct: set the DISTINCT flag if and only if this is true.
- dialect: the dialect used to parse the input expression.
- opts: other options to use to parse the input expressions.

###### Returns:

> The new Intersect expression.

def except_( self, expression: Union[str, Expression], distinct: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Unionable: View Source

    951    def except_(
    952        self, expression: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    953    ) -> Unionable:
    954        """
    955        Builds an EXCEPT expression.
    956
    957        Example:
    958            >>> import sqlglot
    959            >>> sqlglot.parse_one("SELECT * FROM foo").except_("SELECT * FROM bla").sql()
    960            'SELECT * FROM foo EXCEPT SELECT * FROM bla'
    961
    962        Args:
    963            expression: the SQL code string.
    964                If an `Expression` instance is passed, it will be used as-is.
    965            distinct: set the DISTINCT flag if and only if this is true.
    966            dialect: the dialect used to parse the input expression.
    967            opts: other options to use to parse the input expressions.
    968
    969        Returns:
    970            The new Except expression.
    971        """
    972        return except_(left=self, right=expression, distinct=distinct, dialect=dialect, **opts)

Builds an EXCEPT expression.

###### Example:

>     >>> import sqlglot
>     >>> sqlglot.parse_one("SELECT * FROM foo").except_("SELECT * FROM bla").sql()
>     'SELECT * FROM foo EXCEPT SELECT * FROM bla'

###### Arguments:

- expression: the SQL code string. If an `Expression` instance is passed, it will be used as-is.
- distinct: set the DISTINCT flag if and only if this is true.
- dialect: the dialect used to parse the input expression.
- opts: other options to use to parse the input expressions.

###### Returns:

> The new Except expression.

key = 'unionable'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class UDTF(DerivedTable, Unionable): View Source

    975class UDTF(DerivedTable, Unionable):
    976    @property
    977    def selects(self) -> t.List[Expression]:
    978        alias = self.args.get("alias")
    979        return alias.columns if alias else []

selects: List[Expression]
key = 'udtf'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
DerivedTable
  named_selects
Unionable
  union
  intersect
  except_

class Cache(Expression): View Source

    982class Cache(Expression):
    983    arg_types = {
    984        "with": False,
    985        "this": True,
    986        "lazy": False,
    987        "options": False,
    988        "expression": False,
    989    }

arg_types = {'with': False, 'this': True, 'lazy': False, 'options': False, 'expression': False}
key = 'cache'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Uncache(Expression): View Source

    992class Uncache(Expression):
    993    arg_types = {"this": True, "exists": False}

arg_types = {'this': True, 'exists': False}
key = 'uncache'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DDL(Expression): View Source

     996class DDL(Expression):
     997    @property
     998    def ctes(self):
     999        with_ = self.args.get("with")
    1000        if not with_:
    1001            return []
    1002        return with_.expressions
    1003
    1004    @property
    1005    def named_selects(self) -> t.List[str]:
    1006        if isinstance(self.expression, Subqueryable):
    1007            return self.expression.named_selects
    1008        return []
    1009
    1010    @property
    1011    def selects(self) -> t.List[Expression]:
    1012        if isinstance(self.expression, Subqueryable):
    1013            return self.expression.selects
    1014        return []

ctes
named_selects: List[str]
selects: List[Expression]
key = 'ddl'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Create(DDL): View Source

    1017class Create(DDL):
    1018    arg_types = {
    1019        "with": False,
    1020        "this": True,
    1021        "kind": True,
    1022        "expression": False,
    1023        "exists": False,
    1024        "properties": False,
    1025        "replace": False,
    1026        "unique": False,
    1027        "indexes": False,
    1028        "no_schema_binding": False,
    1029        "begin": False,
    1030        "clone": False,
    1031    }

arg_types = {'with': False, 'this': True, 'kind': True, 'expression': False, 'exists': False, 'properties': False, 'replace': False, 'unique': False, 'indexes': False, 'no_schema_binding': False, 'begin': False, 'clone': False}
key = 'create'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
DDL
  ctes
  named_selects
  selects

class Clone(Expression): View Source

    1035class Clone(Expression):
    1036    arg_types = {
    1037        "this": True,
    1038        "when": False,
    1039        "kind": False,
    1040        "shallow": False,
    1041        "expression": False,
    1042    }

arg_types = {'this': True, 'when': False, 'kind': False, 'shallow': False, 'expression': False}
key = 'clone'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Describe(Expression): View Source

    1045class Describe(Expression):
    1046    arg_types = {"this": True, "kind": False, "expressions": False}

arg_types = {'this': True, 'kind': False, 'expressions': False}
key = 'describe'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Pragma(Expression): View Source

    1049class Pragma(Expression):
    1050    pass

key = 'pragma'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Set(Expression): View Source

    1053class Set(Expression):
    1054    arg_types = {"expressions": False, "unset": False, "tag": False}

arg_types = {'expressions': False, 'unset': False, 'tag': False}
key = 'set'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class SetItem(Expression): View Source

    1057class SetItem(Expression):
    1058    arg_types = {
    1059        "this": False,
    1060        "expressions": False,
    1061        "kind": False,
    1062        "collate": False,  # MySQL SET NAMES statement
    1063        "global": False,
    1064    }

arg_types = {'this': False, 'expressions': False, 'kind': False, 'collate': False, 'global': False}
key = 'setitem'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Show(Expression): View Source

    1067class Show(Expression):
    1068    arg_types = {
    1069        "this": True,
    1070        "target": False,
    1071        "offset": False,
    1072        "limit": False,
    1073        "like": False,
    1074        "where": False,
    1075        "db": False,
    1076        "scope": False,
    1077        "scope_kind": False,
    1078        "full": False,
    1079        "mutex": False,
    1080        "query": False,
    1081        "channel": False,
    1082        "global": False,
    1083        "log": False,
    1084        "position": False,
    1085        "types": False,
    1086    }

arg_types = {'this': True, 'target': False, 'offset': False, 'limit': False, 'like': False, 'where': False, 'db': False, 'scope': False, 'scope_kind': False, 'full': False, 'mutex': False, 'query': False, 'channel': False, 'global': False, 'log': False, 'position': False, 'types': False}
key = 'show'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class UserDefinedFunction(Expression): View Source

    1089class UserDefinedFunction(Expression):
    1090    arg_types = {"this": True, "expressions": False, "wrapped": False}

arg_types = {'this': True, 'expressions': False, 'wrapped': False}
key = 'userdefinedfunction'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class CharacterSet(Expression): View Source

    1093class CharacterSet(Expression):
    1094    arg_types = {"this": True, "default": False}

arg_types = {'this': True, 'default': False}
key = 'characterset'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class With(Expression): View Source

    1097class With(Expression):
    1098    arg_types = {"expressions": True, "recursive": False}
    1099
    1100    @property
    1101    def recursive(self) -> bool:
    1102        return bool(self.args.get("recursive"))

arg_types = {'expressions': True, 'recursive': False}
recursive: bool
key = 'with'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class WithinGroup(Expression): View Source

    1105class WithinGroup(Expression):
    1106    arg_types = {"this": True, "expression": False}

arg_types = {'this': True, 'expression': False}
key = 'withingroup'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class CTE(DerivedTable): View Source

    1109class CTE(DerivedTable):
    1110    arg_types = {"this": True, "alias": True}

arg_types = {'this': True, 'alias': True}
key = 'cte'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
DerivedTable
  selects
  named_selects

class TableAlias(Expression): View Source

    1113class TableAlias(Expression):
    1114    arg_types = {"this": False, "columns": False}
    1115
    1116    @property
    1117    def columns(self):
    1118        return self.args.get("columns") or []

arg_types = {'this': False, 'columns': False}
columns
key = 'tablealias'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class BitString(Condition): View Source

    1121class BitString(Condition):
    1122    pass

key = 'bitstring'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class HexString(Condition): View Source

    1125class HexString(Condition):
    1126    pass

key = 'hexstring'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ByteString(Condition): View Source

    1129class ByteString(Condition):
    1130    pass

key = 'bytestring'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class RawString(Condition): View Source

    1133class RawString(Condition):
    1134    pass

key = 'rawstring'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Column(Condition): View Source

    1137class Column(Condition):
    1138    arg_types = {"this": True, "table": False, "db": False, "catalog": False, "join_mark": False}
    1139
    1140    @property
    1141    def table(self) -> str:
    1142        return self.text("table")
    1143
    1144    @property
    1145    def db(self) -> str:
    1146        return self.text("db")
    1147
    1148    @property
    1149    def catalog(self) -> str:
    1150        return self.text("catalog")
    1151
    1152    @property
    1153    def output_name(self) -> str:
    1154        return self.name
    1155
    1156    @property
    1157    def parts(self) -> t.List[Identifier]:
    1158        """Return the parts of a column in order catalog, db, table, name."""
    1159        return [
    1160            t.cast(Identifier, self.args[part])
    1161            for part in ("catalog", "db", "table", "this")
    1162            if self.args.get(part)
    1163        ]
    1164
    1165    def to_dot(self) -> Dot:
    1166        """Converts the column into a dot expression."""
    1167        parts = self.parts
    1168        parent = self.parent
    1169
    1170        while parent:
    1171            if isinstance(parent, Dot):
    1172                parts.append(parent.expression)
    1173            parent = parent.parent
    1174
    1175        return Dot.build(deepcopy(parts))

arg_types = {'this': True, 'table': False, 'db': False, 'catalog': False, 'join_mark': False}
table: str
db: str
catalog: str
output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

parts: List[Identifier]

Return the parts of a column in order catalog, db, table, name.

def to_dot(self) -> Dot: View Source

    1165    def to_dot(self) -> Dot:
    1166        """Converts the column into a dot expression."""
    1167        parts = self.parts
    1168        parent = self.parent
    1169
    1170        while parent:
    1171            if isinstance(parent, Dot):
    1172                parts.append(parent.expression)
    1173            parent = parent.parent
    1174
    1175        return Dot.build(deepcopy(parts))

Converts the column into a dot expression.

key = 'column'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ColumnPosition(Expression): View Source

    1178class ColumnPosition(Expression):
    1179    arg_types = {"this": False, "position": True}

arg_types = {'this': False, 'position': True}
key = 'columnposition'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class ColumnDef(Expression): View Source

    1182class ColumnDef(Expression):
    1183    arg_types = {
    1184        "this": True,
    1185        "kind": False,
    1186        "constraints": False,
    1187        "exists": False,
    1188        "position": False,
    1189    }
    1190
    1191    @property
    1192    def constraints(self) -> t.List[ColumnConstraint]:
    1193        return self.args.get("constraints") or []

arg_types = {'this': True, 'kind': False, 'constraints': False, 'exists': False, 'position': False}
constraints: List[ColumnConstraint]
key = 'columndef'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class AlterColumn(Expression): View Source

    1196class AlterColumn(Expression):
    1197    arg_types = {
    1198        "this": True,
    1199        "dtype": False,
    1200        "collate": False,
    1201        "using": False,
    1202        "default": False,
    1203        "drop": False,
    1204    }

arg_types = {'this': True, 'dtype': False, 'collate': False, 'using': False, 'default': False, 'drop': False}
key = 'altercolumn'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class RenameTable(Expression): View Source

    1207class RenameTable(Expression):
    1208    pass

key = 'renametable'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Comment(Expression): View Source

    1211class Comment(Expression):
    1212    arg_types = {"this": True, "kind": True, "expression": True, "exists": False}

arg_types = {'this': True, 'kind': True, 'expression': True, 'exists': False}
key = 'comment'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Comprehension(Expression): View Source

    1215class Comprehension(Expression):
    1216    arg_types = {"this": True, "expression": True, "iterator": True, "condition": False}

arg_types = {'this': True, 'expression': True, 'iterator': True, 'condition': False}
key = 'comprehension'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class MergeTreeTTLAction(Expression): View Source

    1220class MergeTreeTTLAction(Expression):
    1221    arg_types = {
    1222        "this": True,
    1223        "delete": False,
    1224        "recompress": False,
    1225        "to_disk": False,
    1226        "to_volume": False,
    1227    }

arg_types = {'this': True, 'delete': False, 'recompress': False, 'to_disk': False, 'to_volume': False}
key = 'mergetreettlaction'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class MergeTreeTTL(Expression): View Source

    1231class MergeTreeTTL(Expression):
    1232    arg_types = {
    1233        "expressions": True,
    1234        "where": False,
    1235        "group": False,
    1236        "aggregates": False,
    1237    }

arg_types = {'expressions': True, 'where': False, 'group': False, 'aggregates': False}
key = 'mergetreettl'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class IndexConstraintOption(Expression): View Source

    1241class IndexConstraintOption(Expression):
    1242    arg_types = {
    1243        "key_block_size": False,
    1244        "using": False,
    1245        "parser": False,
    1246        "comment": False,
    1247        "visible": False,
    1248        "engine_attr": False,
    1249        "secondary_engine_attr": False,
    1250    }

arg_types = {'key_block_size': False, 'using': False, 'parser': False, 'comment': False, 'visible': False, 'engine_attr': False, 'secondary_engine_attr': False}
key = 'indexconstraintoption'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class ColumnConstraint(Expression): View Source

    1253class ColumnConstraint(Expression):
    1254    arg_types = {"this": False, "kind": True}
    1255
    1256    @property
    1257    def kind(self) -> ColumnConstraintKind:
    1258        return self.args["kind"]

arg_types = {'this': False, 'kind': True}
kind: ColumnConstraintKind
key = 'columnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class ColumnConstraintKind(Expression): View Source

    1261class ColumnConstraintKind(Expression):
    1262    pass

key = 'columnconstraintkind'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class AutoIncrementColumnConstraint(ColumnConstraintKind): View Source

    1265class AutoIncrementColumnConstraint(ColumnConstraintKind):
    1266    pass

key = 'autoincrementcolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class CaseSpecificColumnConstraint(ColumnConstraintKind): View Source

    1269class CaseSpecificColumnConstraint(ColumnConstraintKind):
    1270    arg_types = {"not_": True}

arg_types = {'not_': True}
key = 'casespecificcolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class CharacterSetColumnConstraint(ColumnConstraintKind): View Source

    1273class CharacterSetColumnConstraint(ColumnConstraintKind):
    1274    arg_types = {"this": True}

arg_types = {'this': True}
key = 'charactersetcolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class CheckColumnConstraint(ColumnConstraintKind): View Source

    1277class CheckColumnConstraint(ColumnConstraintKind):
    1278    pass

key = 'checkcolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
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  pop
  assert_is
  error_messages
  dump
  load

class ClusteredColumnConstraint(ColumnConstraintKind): View Source

    1281class ClusteredColumnConstraint(ColumnConstraintKind):
    1282    pass

key = 'clusteredcolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class CollateColumnConstraint(ColumnConstraintKind): View Source

    1285class CollateColumnConstraint(ColumnConstraintKind):
    1286    pass

key = 'collatecolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class CommentColumnConstraint(ColumnConstraintKind): View Source

    1289class CommentColumnConstraint(ColumnConstraintKind):
    1290    pass

key = 'commentcolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class CompressColumnConstraint(ColumnConstraintKind): View Source

    1293class CompressColumnConstraint(ColumnConstraintKind):
    1294    pass

key = 'compresscolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
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  pop
  assert_is
  error_messages
  dump
  load

class DateFormatColumnConstraint(ColumnConstraintKind): View Source

    1297class DateFormatColumnConstraint(ColumnConstraintKind):
    1298    arg_types = {"this": True}

arg_types = {'this': True}
key = 'dateformatcolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DefaultColumnConstraint(ColumnConstraintKind): View Source

    1301class DefaultColumnConstraint(ColumnConstraintKind):
    1302    pass

key = 'defaultcolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class EncodeColumnConstraint(ColumnConstraintKind): View Source

    1305class EncodeColumnConstraint(ColumnConstraintKind):
    1306    pass

key = 'encodecolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class GeneratedAsIdentityColumnConstraint(ColumnConstraintKind): View Source

    1309class GeneratedAsIdentityColumnConstraint(ColumnConstraintKind):
    1310    # this: True -> ALWAYS, this: False -> BY DEFAULT
    1311    arg_types = {
    1312        "this": False,
    1313        "expression": False,
    1314        "on_null": False,
    1315        "start": False,
    1316        "increment": False,
    1317        "minvalue": False,
    1318        "maxvalue": False,
    1319        "cycle": False,
    1320    }

arg_types = {'this': False, 'expression': False, 'on_null': False, 'start': False, 'increment': False, 'minvalue': False, 'maxvalue': False, 'cycle': False}
key = 'generatedasidentitycolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class IndexColumnConstraint(ColumnConstraintKind): View Source

    1324class IndexColumnConstraint(ColumnConstraintKind):
    1325    arg_types = {
    1326        "this": False,
    1327        "schema": True,
    1328        "kind": False,
    1329        "index_type": False,
    1330        "options": False,
    1331    }

arg_types = {'this': False, 'schema': True, 'kind': False, 'index_type': False, 'options': False}
key = 'indexcolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class InlineLengthColumnConstraint(ColumnConstraintKind): View Source

    1334class InlineLengthColumnConstraint(ColumnConstraintKind):
    1335    pass

key = 'inlinelengthcolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class NonClusteredColumnConstraint(ColumnConstraintKind): View Source

    1338class NonClusteredColumnConstraint(ColumnConstraintKind):
    1339    pass

key = 'nonclusteredcolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class NotForReplicationColumnConstraint(ColumnConstraintKind): View Source

    1342class NotForReplicationColumnConstraint(ColumnConstraintKind):
    1343    arg_types = {}

arg_types = {}
key = 'notforreplicationcolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class NotNullColumnConstraint(ColumnConstraintKind): View Source

    1346class NotNullColumnConstraint(ColumnConstraintKind):
    1347    arg_types = {"allow_null": False}

arg_types = {'allow_null': False}
key = 'notnullcolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class OnUpdateColumnConstraint(ColumnConstraintKind): View Source

    1351class OnUpdateColumnConstraint(ColumnConstraintKind):
    1352    pass

key = 'onupdatecolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class PrimaryKeyColumnConstraint(ColumnConstraintKind): View Source

    1355class PrimaryKeyColumnConstraint(ColumnConstraintKind):
    1356    arg_types = {"desc": False}

arg_types = {'desc': False}
key = 'primarykeycolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TitleColumnConstraint(ColumnConstraintKind): View Source

    1359class TitleColumnConstraint(ColumnConstraintKind):
    1360    pass

key = 'titlecolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class UniqueColumnConstraint(ColumnConstraintKind): View Source

    1363class UniqueColumnConstraint(ColumnConstraintKind):
    1364    arg_types = {"this": False, "index_type": False}

arg_types = {'this': False, 'index_type': False}
key = 'uniquecolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class UppercaseColumnConstraint(ColumnConstraintKind): View Source

    1367class UppercaseColumnConstraint(ColumnConstraintKind):
    1368    arg_types: t.Dict[str, t.Any] = {}

arg_types: Dict[str, Any] = {}
key = 'uppercasecolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class PathColumnConstraint(ColumnConstraintKind): View Source

    1371class PathColumnConstraint(ColumnConstraintKind):
    1372    pass

key = 'pathcolumnconstraint'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class ComputedColumnConstraint(ColumnConstraintKind): View Source

    1377class ComputedColumnConstraint(ColumnConstraintKind):
    1378    arg_types = {"this": True, "persisted": False, "not_null": False}

arg_types = {'this': True, 'persisted': False, 'not_null': False}
key = 'computedcolumnconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Constraint(Expression): View Source

    1381class Constraint(Expression):
    1382    arg_types = {"this": True, "expressions": True}

arg_types = {'this': True, 'expressions': True}
key = 'constraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Delete(Expression): View Source

    1385class Delete(Expression):
    1386    arg_types = {
    1387        "with": False,
    1388        "this": False,
    1389        "using": False,
    1390        "where": False,
    1391        "returning": False,
    1392        "limit": False,
    1393        "tables": False,  # Multiple-Table Syntax (MySQL)
    1394    }
    1395
    1396    def delete(
    1397        self,
    1398        table: ExpOrStr,
    1399        dialect: DialectType = None,
    1400        copy: bool = True,
    1401        **opts,
    1402    ) -> Delete:
    1403        """
    1404        Create a DELETE expression or replace the table on an existing DELETE expression.
    1405
    1406        Example:
    1407            >>> delete("tbl").sql()
    1408            'DELETE FROM tbl'
    1409
    1410        Args:
    1411            table: the table from which to delete.
    1412            dialect: the dialect used to parse the input expression.
    1413            copy: if `False`, modify this expression instance in-place.
    1414            opts: other options to use to parse the input expressions.
    1415
    1416        Returns:
    1417            Delete: the modified expression.
    1418        """
    1419        return _apply_builder(
    1420            expression=table,
    1421            instance=self,
    1422            arg="this",
    1423            dialect=dialect,
    1424            into=Table,
    1425            copy=copy,
    1426            **opts,
    1427        )
    1428
    1429    def where(
    1430        self,
    1431        *expressions: t.Optional[ExpOrStr],
    1432        append: bool = True,
    1433        dialect: DialectType = None,
    1434        copy: bool = True,
    1435        **opts,
    1436    ) -> Delete:
    1437        """
    1438        Append to or set the WHERE expressions.
    1439
    1440        Example:
    1441            >>> delete("tbl").where("x = 'a' OR x < 'b'").sql()
    1442            "DELETE FROM tbl WHERE x = 'a' OR x < 'b'"
    1443
    1444        Args:
    1445            *expressions: the SQL code strings to parse.
    1446                If an `Expression` instance is passed, it will be used as-is.
    1447                Multiple expressions are combined with an AND operator.
    1448            append: if `True`, AND the new expressions to any existing expression.
    1449                Otherwise, this resets the expression.
    1450            dialect: the dialect used to parse the input expressions.
    1451            copy: if `False`, modify this expression instance in-place.
    1452            opts: other options to use to parse the input expressions.
    1453
    1454        Returns:
    1455            Delete: the modified expression.
    1456        """
    1457        return _apply_conjunction_builder(
    1458            *expressions,
    1459            instance=self,
    1460            arg="where",
    1461            append=append,
    1462            into=Where,
    1463            dialect=dialect,
    1464            copy=copy,
    1465            **opts,
    1466        )
    1467
    1468    def returning(
    1469        self,
    1470        expression: ExpOrStr,
    1471        dialect: DialectType = None,
    1472        copy: bool = True,
    1473        **opts,
    1474    ) -> Delete:
    1475        """
    1476        Set the RETURNING expression. Not supported by all dialects.
    1477
    1478        Example:
    1479            >>> delete("tbl").returning("*", dialect="postgres").sql()
    1480            'DELETE FROM tbl RETURNING *'
    1481
    1482        Args:
    1483            expression: the SQL code strings to parse.
    1484                If an `Expression` instance is passed, it will be used as-is.
    1485            dialect: the dialect used to parse the input expressions.
    1486            copy: if `False`, modify this expression instance in-place.
    1487            opts: other options to use to parse the input expressions.
    1488
    1489        Returns:
    1490            Delete: the modified expression.
    1491        """
    1492        return _apply_builder(
    1493            expression=expression,
    1494            instance=self,
    1495            arg="returning",
    1496            prefix="RETURNING",
    1497            dialect=dialect,
    1498            copy=copy,
    1499            into=Returning,
    1500            **opts,
    1501        )

arg_types = {'with': False, 'this': False, 'using': False, 'where': False, 'returning': False, 'limit': False, 'tables': False}
def delete( self, table: Union[str, Expression], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Delete: View Source

    1396    def delete(
    1397        self,
    1398        table: ExpOrStr,
    1399        dialect: DialectType = None,
    1400        copy: bool = True,
    1401        **opts,
    1402    ) -> Delete:
    1403        """
    1404        Create a DELETE expression or replace the table on an existing DELETE expression.
    1405
    1406        Example:
    1407            >>> delete("tbl").sql()
    1408            'DELETE FROM tbl'
    1409
    1410        Args:
    1411            table: the table from which to delete.
    1412            dialect: the dialect used to parse the input expression.
    1413            copy: if `False`, modify this expression instance in-place.
    1414            opts: other options to use to parse the input expressions.
    1415
    1416        Returns:
    1417            Delete: the modified expression.
    1418        """
    1419        return _apply_builder(
    1420            expression=table,
    1421            instance=self,
    1422            arg="this",
    1423            dialect=dialect,
    1424            into=Table,
    1425            copy=copy,
    1426            **opts,
    1427        )

Create a DELETE expression or replace the table on an existing DELETE expression.

###### Example:

>     >>> delete("tbl").sql()
>     'DELETE FROM tbl'

###### Arguments:

- table: the table from which to delete.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> Delete: the modified expression.

def where( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Delete: View Source

    1429    def where(
    1430        self,
    1431        *expressions: t.Optional[ExpOrStr],
    1432        append: bool = True,
    1433        dialect: DialectType = None,
    1434        copy: bool = True,
    1435        **opts,
    1436    ) -> Delete:
    1437        """
    1438        Append to or set the WHERE expressions.
    1439
    1440        Example:
    1441            >>> delete("tbl").where("x = 'a' OR x < 'b'").sql()
    1442            "DELETE FROM tbl WHERE x = 'a' OR x < 'b'"
    1443
    1444        Args:
    1445            *expressions: the SQL code strings to parse.
    1446                If an `Expression` instance is passed, it will be used as-is.
    1447                Multiple expressions are combined with an AND operator.
    1448            append: if `True`, AND the new expressions to any existing expression.
    1449                Otherwise, this resets the expression.
    1450            dialect: the dialect used to parse the input expressions.
    1451            copy: if `False`, modify this expression instance in-place.
    1452            opts: other options to use to parse the input expressions.
    1453
    1454        Returns:
    1455            Delete: the modified expression.
    1456        """
    1457        return _apply_conjunction_builder(
    1458            *expressions,
    1459            instance=self,
    1460            arg="where",
    1461            append=append,
    1462            into=Where,
    1463            dialect=dialect,
    1464            copy=copy,
    1465            **opts,
    1466        )

Append to or set the WHERE expressions.

###### Example:

>     >>> delete("tbl").where("x = 'a' OR x < 'b'").sql()
>     "DELETE FROM tbl WHERE x = 'a' OR x < 'b'"

###### Arguments:

- *expressions: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is. Multiple expressions are combined with an AND operator.
- append: if `True`, AND the new expressions to any existing expression. Otherwise, this resets the expression.
- dialect: the dialect used to parse the input expressions.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> Delete: the modified expression.

def returning( self, expression: Union[str, Expression], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Delete: View Source

    1468    def returning(
    1469        self,
    1470        expression: ExpOrStr,
    1471        dialect: DialectType = None,
    1472        copy: bool = True,
    1473        **opts,
    1474    ) -> Delete:
    1475        """
    1476        Set the RETURNING expression. Not supported by all dialects.
    1477
    1478        Example:
    1479            >>> delete("tbl").returning("*", dialect="postgres").sql()
    1480            'DELETE FROM tbl RETURNING *'
    1481
    1482        Args:
    1483            expression: the SQL code strings to parse.
    1484                If an `Expression` instance is passed, it will be used as-is.
    1485            dialect: the dialect used to parse the input expressions.
    1486            copy: if `False`, modify this expression instance in-place.
    1487            opts: other options to use to parse the input expressions.
    1488
    1489        Returns:
    1490            Delete: the modified expression.
    1491        """
    1492        return _apply_builder(
    1493            expression=expression,
    1494            instance=self,
    1495            arg="returning",
    1496            prefix="RETURNING",
    1497            dialect=dialect,
    1498            copy=copy,
    1499            into=Returning,
    1500            **opts,
    1501        )

Set the RETURNING expression. Not supported by all dialects.

###### Example:

>     >>> delete("tbl").returning("*", dialect="postgres").sql()
>     'DELETE FROM tbl RETURNING *'

###### Arguments:

- expression: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is.
- dialect: the dialect used to parse the input expressions.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> Delete: the modified expression.

key = 'delete'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Drop(Expression): View Source

    1504class Drop(Expression):
    1505    arg_types = {
    1506        "this": False,
    1507        "kind": False,
    1508        "exists": False,
    1509        "temporary": False,
    1510        "materialized": False,
    1511        "cascade": False,
    1512        "constraints": False,
    1513        "purge": False,
    1514    }

arg_types = {'this': False, 'kind': False, 'exists': False, 'temporary': False, 'materialized': False, 'cascade': False, 'constraints': False, 'purge': False}
key = 'drop'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Filter(Expression): View Source

    1517class Filter(Expression):
    1518    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'filter'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Check(Expression): View Source

    1521class Check(Expression):
    1522    pass

key = 'check'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Connect(Expression): View Source

    1526class Connect(Expression):
    1527    arg_types = {"start": False, "connect": True}

arg_types = {'start': False, 'connect': True}
key = 'connect'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Prior(Expression): View Source

    1530class Prior(Expression):
    1531    pass

key = 'prior'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Directory(Expression): View Source

    1534class Directory(Expression):
    1535    # https://spark.apache.org/docs/3.0.0-preview/sql-ref-syntax-dml-insert-overwrite-directory-hive.html
    1536    arg_types = {"this": True, "local": False, "row_format": False}

arg_types = {'this': True, 'local': False, 'row_format': False}
key = 'directory'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class ForeignKey(Expression): View Source

    1539class ForeignKey(Expression):
    1540    arg_types = {
    1541        "expressions": True,
    1542        "reference": False,
    1543        "delete": False,
    1544        "update": False,
    1545    }

arg_types = {'expressions': True, 'reference': False, 'delete': False, 'update': False}
key = 'foreignkey'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class ColumnPrefix(Expression): View Source

    1548class ColumnPrefix(Expression):
    1549    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'columnprefix'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class PrimaryKey(Expression): View Source

    1552class PrimaryKey(Expression):
    1553    arg_types = {"expressions": True, "options": False}

arg_types = {'expressions': True, 'options': False}
key = 'primarykey'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Into(Expression): View Source

    1558class Into(Expression):
    1559    arg_types = {"this": True, "temporary": False, "unlogged": False}

arg_types = {'this': True, 'temporary': False, 'unlogged': False}
key = 'into'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class From(Expression): View Source

    1562class From(Expression):
    1563    @property
    1564    def name(self) -> str:
    1565        return self.this.name
    1566
    1567    @property
    1568    def alias_or_name(self) -> str:
    1569        return self.this.alias_or_name

name: str
alias_or_name: str
key = 'from'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Having(Expression): View Source

    1572class Having(Expression):
    1573    pass

key = 'having'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Hint(Expression): View Source

    1576class Hint(Expression):
    1577    arg_types = {"expressions": True}

arg_types = {'expressions': True}
key = 'hint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class JoinHint(Expression): View Source

    1580class JoinHint(Expression):
    1581    arg_types = {"this": True, "expressions": True}

arg_types = {'this': True, 'expressions': True}
key = 'joinhint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Identifier(Expression): View Source

    1584class Identifier(Expression):
    1585    arg_types = {"this": True, "quoted": False, "global": False, "temporary": False}
    1586
    1587    @property
    1588    def quoted(self) -> bool:
    1589        return bool(self.args.get("quoted"))
    1590
    1591    @property
    1592    def hashable_args(self) -> t.Any:
    1593        return (self.this, self.quoted)
    1594
    1595    @property
    1596    def output_name(self) -> str:
    1597        return self.name

arg_types = {'this': True, 'quoted': False, 'global': False, 'temporary': False}
quoted: bool
hashable_args: Any
output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

key = 'identifier'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Index(Expression): View Source

    1600class Index(Expression):
    1601    arg_types = {
    1602        "this": False,
    1603        "table": False,
    1604        "using": False,
    1605        "where": False,
    1606        "columns": False,
    1607        "unique": False,
    1608        "primary": False,
    1609        "amp": False,  # teradata
    1610        "partition_by": False,  # teradata
    1611    }

arg_types = {'this': False, 'table': False, 'using': False, 'where': False, 'columns': False, 'unique': False, 'primary': False, 'amp': False, 'partition_by': False}
key = 'index'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Insert(DDL): View Source

    1614class Insert(DDL):
    1615    arg_types = {
    1616        "with": False,
    1617        "this": True,
    1618        "expression": False,
    1619        "conflict": False,
    1620        "returning": False,
    1621        "overwrite": False,
    1622        "exists": False,
    1623        "partition": False,
    1624        "alternative": False,
    1625        "where": False,
    1626        "ignore": False,
    1627        "by_name": False,
    1628    }
    1629
    1630    def with_(
    1631        self,
    1632        alias: ExpOrStr,
    1633        as_: ExpOrStr,
    1634        recursive: t.Optional[bool] = None,
    1635        append: bool = True,
    1636        dialect: DialectType = None,
    1637        copy: bool = True,
    1638        **opts,
    1639    ) -> Insert:
    1640        """
    1641        Append to or set the common table expressions.
    1642
    1643        Example:
    1644            >>> insert("SELECT x FROM cte", "t").with_("cte", as_="SELECT * FROM tbl").sql()
    1645            'WITH cte AS (SELECT * FROM tbl) INSERT INTO t SELECT x FROM cte'
    1646
    1647        Args:
    1648            alias: the SQL code string to parse as the table name.
    1649                If an `Expression` instance is passed, this is used as-is.
    1650            as_: the SQL code string to parse as the table expression.
    1651                If an `Expression` instance is passed, it will be used as-is.
    1652            recursive: set the RECURSIVE part of the expression. Defaults to `False`.
    1653            append: if `True`, add to any existing expressions.
    1654                Otherwise, this resets the expressions.
    1655            dialect: the dialect used to parse the input expression.
    1656            copy: if `False`, modify this expression instance in-place.
    1657            opts: other options to use to parse the input expressions.
    1658
    1659        Returns:
    1660            The modified expression.
    1661        """
    1662        return _apply_cte_builder(
    1663            self, alias, as_, recursive=recursive, append=append, dialect=dialect, copy=copy, **opts
    1664        )

arg_types = {'with': False, 'this': True, 'expression': False, 'conflict': False, 'returning': False, 'overwrite': False, 'exists': False, 'partition': False, 'alternative': False, 'where': False, 'ignore': False, 'by_name': False}
def with_( self, alias: Union[str, Expression], as_: Union[str, Expression], recursive: Optional[bool] = None, append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Insert: View Source

    1630    def with_(
    1631        self,
    1632        alias: ExpOrStr,
    1633        as_: ExpOrStr,
    1634        recursive: t.Optional[bool] = None,
    1635        append: bool = True,
    1636        dialect: DialectType = None,
    1637        copy: bool = True,
    1638        **opts,
    1639    ) -> Insert:
    1640        """
    1641        Append to or set the common table expressions.
    1642
    1643        Example:
    1644            >>> insert("SELECT x FROM cte", "t").with_("cte", as_="SELECT * FROM tbl").sql()
    1645            'WITH cte AS (SELECT * FROM tbl) INSERT INTO t SELECT x FROM cte'
    1646
    1647        Args:
    1648            alias: the SQL code string to parse as the table name.
    1649                If an `Expression` instance is passed, this is used as-is.
    1650            as_: the SQL code string to parse as the table expression.
    1651                If an `Expression` instance is passed, it will be used as-is.
    1652            recursive: set the RECURSIVE part of the expression. Defaults to `False`.
    1653            append: if `True`, add to any existing expressions.
    1654                Otherwise, this resets the expressions.
    1655            dialect: the dialect used to parse the input expression.
    1656            copy: if `False`, modify this expression instance in-place.
    1657            opts: other options to use to parse the input expressions.
    1658
    1659        Returns:
    1660            The modified expression.
    1661        """
    1662        return _apply_cte_builder(
    1663            self, alias, as_, recursive=recursive, append=append, dialect=dialect, copy=copy, **opts
    1664        )

Append to or set the common table expressions.

###### Example:

>     >>> insert("SELECT x FROM cte", "t").with_("cte", as_="SELECT * FROM tbl").sql()
>     'WITH cte AS (SELECT * FROM tbl) INSERT INTO t SELECT x FROM cte'

###### Arguments:

- alias: the SQL code string to parse as the table name. If an `Expression` instance is passed, this is used as-is.
- as_: the SQL code string to parse as the table expression. If an `Expression` instance is passed, it will be used as-is.
- recursive: set the RECURSIVE part of the expression. Defaults to `False`.
- append: if `True`, add to any existing expressions. Otherwise, this resets the expressions.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified expression.

key = 'insert'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
DDL
  ctes
  named_selects
  selects

class OnConflict(Expression): View Source

    1667class OnConflict(Expression):
    1668    arg_types = {
    1669        "duplicate": False,
    1670        "expressions": False,
    1671        "nothing": False,
    1672        "key": False,
    1673        "constraint": False,
    1674    }

arg_types = {'duplicate': False, 'expressions': False, 'nothing': False, 'key': False, 'constraint': False}
key = 'onconflict'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Returning(Expression): View Source

    1677class Returning(Expression):
    1678    arg_types = {"expressions": True, "into": False}

arg_types = {'expressions': True, 'into': False}
key = 'returning'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Introducer(Expression): View Source

    1682class Introducer(Expression):
    1683    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'introducer'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class National(Expression): View Source

    1687class National(Expression):
    1688    pass

key = 'national'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class LoadData(Expression): View Source

    1691class LoadData(Expression):
    1692    arg_types = {
    1693        "this": True,
    1694        "local": False,
    1695        "overwrite": False,
    1696        "inpath": True,
    1697        "partition": False,
    1698        "input_format": False,
    1699        "serde": False,
    1700    }

arg_types = {'this': True, 'local': False, 'overwrite': False, 'inpath': True, 'partition': False, 'input_format': False, 'serde': False}
key = 'loaddata'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Partition(Expression): View Source

    1703class Partition(Expression):
    1704    arg_types = {"expressions": True}

arg_types = {'expressions': True}
key = 'partition'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Fetch(Expression): View Source

    1707class Fetch(Expression):
    1708    arg_types = {
    1709        "direction": False,
    1710        "count": False,
    1711        "percent": False,
    1712        "with_ties": False,
    1713    }

arg_types = {'direction': False, 'count': False, 'percent': False, 'with_ties': False}
key = 'fetch'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Group(Expression): View Source

    1716class Group(Expression):
    1717    arg_types = {
    1718        "expressions": False,
    1719        "grouping_sets": False,
    1720        "cube": False,
    1721        "rollup": False,
    1722        "totals": False,
    1723        "all": False,
    1724    }

arg_types = {'expressions': False, 'grouping_sets': False, 'cube': False, 'rollup': False, 'totals': False, 'all': False}
key = 'group'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Lambda(Expression): View Source

    1727class Lambda(Expression):
    1728    arg_types = {"this": True, "expressions": True}

arg_types = {'this': True, 'expressions': True}
key = 'lambda'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Limit(Expression): View Source

    1731class Limit(Expression):
    1732    arg_types = {"this": False, "expression": True, "offset": False}

arg_types = {'this': False, 'expression': True, 'offset': False}
key = 'limit'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Literal(Condition): View Source

    1735class Literal(Condition):
    1736    arg_types = {"this": True, "is_string": True}
    1737
    1738    @property
    1739    def hashable_args(self) -> t.Any:
    1740        return (self.this, self.args.get("is_string"))
    1741
    1742    @classmethod
    1743    def number(cls, number) -> Literal:
    1744        return cls(this=str(number), is_string=False)
    1745
    1746    @classmethod
    1747    def string(cls, string) -> Literal:
    1748        return cls(this=str(string), is_string=True)
    1749
    1750    @property
    1751    def output_name(self) -> str:
    1752        return self.name

arg_types = {'this': True, 'is_string': True}
hashable_args: Any
@classmethod
def number(cls, number) -> Literal: View Source

    1742    @classmethod
    1743    def number(cls, number) -> Literal:
    1744        return cls(this=str(number), is_string=False)

@classmethod
def string(cls, string) -> Literal: View Source

    1746    @classmethod
    1747    def string(cls, string) -> Literal:
    1748        return cls(this=str(string), is_string=True)

output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

key = 'literal'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Join(Expression): View Source

    1755class Join(Expression):
    1756    arg_types = {
    1757        "this": True,
    1758        "on": False,
    1759        "side": False,
    1760        "kind": False,
    1761        "using": False,
    1762        "method": False,
    1763        "global": False,
    1764        "hint": False,
    1765    }
    1766
    1767    @property
    1768    def method(self) -> str:
    1769        return self.text("method").upper()
    1770
    1771    @property
    1772    def kind(self) -> str:
    1773        return self.text("kind").upper()
    1774
    1775    @property
    1776    def side(self) -> str:
    1777        return self.text("side").upper()
    1778
    1779    @property
    1780    def hint(self) -> str:
    1781        return self.text("hint").upper()
    1782
    1783    @property
    1784    def alias_or_name(self) -> str:
    1785        return self.this.alias_or_name
    1786
    1787    def on(
    1788        self,
    1789        *expressions: t.Optional[ExpOrStr],
    1790        append: bool = True,
    1791        dialect: DialectType = None,
    1792        copy: bool = True,
    1793        **opts,
    1794    ) -> Join:
    1795        """
    1796        Append to or set the ON expressions.
    1797
    1798        Example:
    1799            >>> import sqlglot
    1800            >>> sqlglot.parse_one("JOIN x", into=Join).on("y = 1").sql()
    1801            'JOIN x ON y = 1'
    1802
    1803        Args:
    1804            *expressions: the SQL code strings to parse.
    1805                If an `Expression` instance is passed, it will be used as-is.
    1806                Multiple expressions are combined with an AND operator.
    1807            append: if `True`, AND the new expressions to any existing expression.
    1808                Otherwise, this resets the expression.
    1809            dialect: the dialect used to parse the input expressions.
    1810            copy: if `False`, modify this expression instance in-place.
    1811            opts: other options to use to parse the input expressions.
    1812
    1813        Returns:
    1814            The modified Join expression.
    1815        """
    1816        join = _apply_conjunction_builder(
    1817            *expressions,
    1818            instance=self,
    1819            arg="on",
    1820            append=append,
    1821            dialect=dialect,
    1822            copy=copy,
    1823            **opts,
    1824        )
    1825
    1826        if join.kind == "CROSS":
    1827            join.set("kind", None)
    1828
    1829        return join
    1830
    1831    def using(
    1832        self,
    1833        *expressions: t.Optional[ExpOrStr],
    1834        append: bool = True,
    1835        dialect: DialectType = None,
    1836        copy: bool = True,
    1837        **opts,
    1838    ) -> Join:
    1839        """
    1840        Append to or set the USING expressions.
    1841
    1842        Example:
    1843            >>> import sqlglot
    1844            >>> sqlglot.parse_one("JOIN x", into=Join).using("foo", "bla").sql()
    1845            'JOIN x USING (foo, bla)'
    1846
    1847        Args:
    1848            *expressions: the SQL code strings to parse.
    1849                If an `Expression` instance is passed, it will be used as-is.
    1850            append: if `True`, concatenate the new expressions to the existing "using" list.
    1851                Otherwise, this resets the expression.
    1852            dialect: the dialect used to parse the input expressions.
    1853            copy: if `False`, modify this expression instance in-place.
    1854            opts: other options to use to parse the input expressions.
    1855
    1856        Returns:
    1857            The modified Join expression.
    1858        """
    1859        join = _apply_list_builder(
    1860            *expressions,
    1861            instance=self,
    1862            arg="using",
    1863            append=append,
    1864            dialect=dialect,
    1865            copy=copy,
    1866            **opts,
    1867        )
    1868
    1869        if join.kind == "CROSS":
    1870            join.set("kind", None)
    1871
    1872        return join

arg_types = {'this': True, 'on': False, 'side': False, 'kind': False, 'using': False, 'method': False, 'global': False, 'hint': False}
method: str
kind: str
side: str
hint: str
alias_or_name: str
def on( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Join: View Source

    1787    def on(
    1788        self,
    1789        *expressions: t.Optional[ExpOrStr],
    1790        append: bool = True,
    1791        dialect: DialectType = None,
    1792        copy: bool = True,
    1793        **opts,
    1794    ) -> Join:
    1795        """
    1796        Append to or set the ON expressions.
    1797
    1798        Example:
    1799            >>> import sqlglot
    1800            >>> sqlglot.parse_one("JOIN x", into=Join).on("y = 1").sql()
    1801            'JOIN x ON y = 1'
    1802
    1803        Args:
    1804            *expressions: the SQL code strings to parse.
    1805                If an `Expression` instance is passed, it will be used as-is.
    1806                Multiple expressions are combined with an AND operator.
    1807            append: if `True`, AND the new expressions to any existing expression.
    1808                Otherwise, this resets the expression.
    1809            dialect: the dialect used to parse the input expressions.
    1810            copy: if `False`, modify this expression instance in-place.
    1811            opts: other options to use to parse the input expressions.
    1812
    1813        Returns:
    1814            The modified Join expression.
    1815        """
    1816        join = _apply_conjunction_builder(
    1817            *expressions,
    1818            instance=self,
    1819            arg="on",
    1820            append=append,
    1821            dialect=dialect,
    1822            copy=copy,
    1823            **opts,
    1824        )
    1825
    1826        if join.kind == "CROSS":
    1827            join.set("kind", None)
    1828
    1829        return join

Append to or set the ON expressions.

###### Example:

>     >>> import sqlglot
>     >>> sqlglot.parse_one("JOIN x", into=Join).on("y = 1").sql()
>     'JOIN x ON y = 1'

###### Arguments:

- *expressions: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is. Multiple expressions are combined with an AND operator.
- append: if `True`, AND the new expressions to any existing expression. Otherwise, this resets the expression.
- dialect: the dialect used to parse the input expressions.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Join expression.

def using( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Join: View Source

    1831    def using(
    1832        self,
    1833        *expressions: t.Optional[ExpOrStr],
    1834        append: bool = True,
    1835        dialect: DialectType = None,
    1836        copy: bool = True,
    1837        **opts,
    1838    ) -> Join:
    1839        """
    1840        Append to or set the USING expressions.
    1841
    1842        Example:
    1843            >>> import sqlglot
    1844            >>> sqlglot.parse_one("JOIN x", into=Join).using("foo", "bla").sql()
    1845            'JOIN x USING (foo, bla)'
    1846
    1847        Args:
    1848            *expressions: the SQL code strings to parse.
    1849                If an `Expression` instance is passed, it will be used as-is.
    1850            append: if `True`, concatenate the new expressions to the existing "using" list.
    1851                Otherwise, this resets the expression.
    1852            dialect: the dialect used to parse the input expressions.
    1853            copy: if `False`, modify this expression instance in-place.
    1854            opts: other options to use to parse the input expressions.
    1855
    1856        Returns:
    1857            The modified Join expression.
    1858        """
    1859        join = _apply_list_builder(
    1860            *expressions,
    1861            instance=self,
    1862            arg="using",
    1863            append=append,
    1864            dialect=dialect,
    1865            copy=copy,
    1866            **opts,
    1867        )
    1868
    1869        if join.kind == "CROSS":
    1870            join.set("kind", None)
    1871
    1872        return join

Append to or set the USING expressions.

###### Example:

>     >>> import sqlglot
>     >>> sqlglot.parse_one("JOIN x", into=Join).using("foo", "bla").sql()
>     'JOIN x USING (foo, bla)'

###### Arguments:

- *expressions: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is.
- append: if `True`, concatenate the new expressions to the existing "using" list. Otherwise, this resets the expression.
- dialect: the dialect used to parse the input expressions.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Join expression.

key = 'join'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Lateral(UDTF): View Source

    1875class Lateral(UDTF):
    1876    arg_types = {"this": True, "view": False, "outer": False, "alias": False}

arg_types = {'this': True, 'view': False, 'outer': False, 'alias': False}
key = 'lateral'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
UDTF
  selects
DerivedTable
  named_selects
Unionable
  union
  intersect
  except_

class MatchRecognize(Expression): View Source

    1879class MatchRecognize(Expression):
    1880    arg_types = {
    1881        "partition_by": False,
    1882        "order": False,
    1883        "measures": False,
    1884        "rows": False,
    1885        "after": False,
    1886        "pattern": False,
    1887        "define": False,
    1888        "alias": False,
    1889    }

arg_types = {'partition_by': False, 'order': False, 'measures': False, 'rows': False, 'after': False, 'pattern': False, 'define': False, 'alias': False}
key = 'matchrecognize'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Final(Expression): View Source

    1894class Final(Expression):
    1895    pass

key = 'final'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Offset(Expression): View Source

    1898class Offset(Expression):
    1899    arg_types = {"this": False, "expression": True}

arg_types = {'this': False, 'expression': True}
key = 'offset'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Order(Expression): View Source

    1902class Order(Expression):
    1903    arg_types = {"this": False, "expressions": True}

arg_types = {'this': False, 'expressions': True}
key = 'order'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Cluster(Order): View Source

    1908class Cluster(Order):
    1909    pass

key = 'cluster'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
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  unnest_operands
  flatten
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  pop
  assert_is
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  dump
  load
Order
  arg_types

class Distribute(Order): View Source

    1912class Distribute(Order):
    1913    pass

key = 'distribute'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
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  unnest
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  unnest_operands
  flatten
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  replace
  pop
  assert_is
  error_messages
  dump
  load
Order
  arg_types

class Sort(Order): View Source

    1916class Sort(Order):
    1917    pass

key = 'sort'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
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  same_parent
  root
  walk
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  unnest
  unalias
  unnest_operands
  flatten
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  pop
  assert_is
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  dump
  load
Order
  arg_types

class Ordered(Expression): View Source

    1920class Ordered(Expression):
    1921    arg_types = {"this": True, "desc": True, "nulls_first": True}

arg_types = {'this': True, 'desc': True, 'nulls_first': True}
key = 'ordered'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  transform
  replace
  pop
  assert_is
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  dump
  load

class Property(Expression): View Source

    1924class Property(Expression):
    1925    arg_types = {"this": True, "value": True}

arg_types = {'this': True, 'value': True}
key = 'property'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  replace
  pop
  assert_is
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  dump
  load

class AlgorithmProperty(Property): View Source

    1928class AlgorithmProperty(Property):
    1929    arg_types = {"this": True}

arg_types = {'this': True}
key = 'algorithmproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  pop
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  load

class AutoIncrementProperty(Property): View Source

    1932class AutoIncrementProperty(Property):
    1933    arg_types = {"this": True}

arg_types = {'this': True}
key = 'autoincrementproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  transform
  replace
  pop
  assert_is
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  load

class BlockCompressionProperty(Property): View Source

    1936class BlockCompressionProperty(Property):
    1937    arg_types = {"autotemp": False, "always": False, "default": True, "manual": True, "never": True}

arg_types = {'autotemp': False, 'always': False, 'default': True, 'manual': True, 'never': True}
key = 'blockcompressionproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  replace
  pop
  assert_is
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  dump
  load

class CharacterSetProperty(Property): View Source

    1940class CharacterSetProperty(Property):
    1941    arg_types = {"this": True, "default": True}

arg_types = {'this': True, 'default': True}
key = 'charactersetproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  pop
  assert_is
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  dump
  load

class ChecksumProperty(Property): View Source

    1944class ChecksumProperty(Property):
    1945    arg_types = {"on": False, "default": False}

arg_types = {'on': False, 'default': False}
key = 'checksumproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
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  pop
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  load

class CollateProperty(Property): View Source

    1948class CollateProperty(Property):
    1949    arg_types = {"this": True}

arg_types = {'this': True}
key = 'collateproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  pop
  assert_is
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  dump
  load

class CopyGrantsProperty(Property): View Source

    1952class CopyGrantsProperty(Property):
    1953    arg_types = {}

arg_types = {}
key = 'copygrantsproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  pop
  assert_is
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  load

class DataBlocksizeProperty(Property): View Source

    1956class DataBlocksizeProperty(Property):
    1957    arg_types = {
    1958        "size": False,
    1959        "units": False,
    1960        "minimum": False,
    1961        "maximum": False,
    1962        "default": False,
    1963    }

arg_types = {'size': False, 'units': False, 'minimum': False, 'maximum': False, 'default': False}
key = 'datablocksizeproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
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  pop
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  load

class DefinerProperty(Property): View Source

    1966class DefinerProperty(Property):
    1967    arg_types = {"this": True}

arg_types = {'this': True}
key = 'definerproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
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  unnest
  unalias
  unnest_operands
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  pop
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  load

class DistKeyProperty(Property): View Source

    1970class DistKeyProperty(Property):
    1971    arg_types = {"this": True}

arg_types = {'this': True}
key = 'distkeyproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
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  pop
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  load

class DistStyleProperty(Property): View Source

    1974class DistStyleProperty(Property):
    1975    arg_types = {"this": True}

arg_types = {'this': True}
key = 'diststyleproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  pop
  assert_is
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  dump
  load

class EngineProperty(Property): View Source

    1978class EngineProperty(Property):
    1979    arg_types = {"this": True}

arg_types = {'this': True}
key = 'engineproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  pop
  assert_is
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  dump
  load

class HeapProperty(Property): View Source

    1982class HeapProperty(Property):
    1983    arg_types = {}

arg_types = {}
key = 'heapproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  pop
  assert_is
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  load

class ToTableProperty(Property): View Source

    1986class ToTableProperty(Property):
    1987    arg_types = {"this": True}

arg_types = {'this': True}
key = 'totableproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
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  pop
  assert_is
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  load

class ExecuteAsProperty(Property): View Source

    1990class ExecuteAsProperty(Property):
    1991    arg_types = {"this": True}

arg_types = {'this': True}
key = 'executeasproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
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  pop
  assert_is
  error_messages
  dump
  load

class ExternalProperty(Property): View Source

    1994class ExternalProperty(Property):
    1995    arg_types = {"this": False}

arg_types = {'this': False}
key = 'externalproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  pop
  assert_is
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  dump
  load

class FallbackProperty(Property): View Source

    1998class FallbackProperty(Property):
    1999    arg_types = {"no": True, "protection": False}

arg_types = {'no': True, 'protection': False}
key = 'fallbackproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
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  pop
  assert_is
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  dump
  load

class FileFormatProperty(Property): View Source

    2002class FileFormatProperty(Property):
    2003    arg_types = {"this": True}

arg_types = {'this': True}
key = 'fileformatproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class FreespaceProperty(Property): View Source

    2006class FreespaceProperty(Property):
    2007    arg_types = {"this": True, "percent": False}

arg_types = {'this': True, 'percent': False}
key = 'freespaceproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
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  pop
  assert_is
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  dump
  load

class InputOutputFormat(Expression): View Source

    2010class InputOutputFormat(Expression):
    2011    arg_types = {"input_format": False, "output_format": False}

arg_types = {'input_format': False, 'output_format': False}
key = 'inputoutputformat'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class IsolatedLoadingProperty(Property): View Source

    2014class IsolatedLoadingProperty(Property):
    2015    arg_types = {
    2016        "no": True,
    2017        "concurrent": True,
    2018        "for_all": True,
    2019        "for_insert": True,
    2020        "for_none": True,
    2021    }

arg_types = {'no': True, 'concurrent': True, 'for_all': True, 'for_insert': True, 'for_none': True}
key = 'isolatedloadingproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class JournalProperty(Property): View Source

    2024class JournalProperty(Property):
    2025    arg_types = {
    2026        "no": False,
    2027        "dual": False,
    2028        "before": False,
    2029        "local": False,
    2030        "after": False,
    2031    }

arg_types = {'no': False, 'dual': False, 'before': False, 'local': False, 'after': False}
key = 'journalproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class LanguageProperty(Property): View Source

    2034class LanguageProperty(Property):
    2035    arg_types = {"this": True}

arg_types = {'this': True}
key = 'languageproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class ClusteredByProperty(Property): View Source

    2039class ClusteredByProperty(Property):
    2040    arg_types = {"expressions": True, "sorted_by": False, "buckets": True}

arg_types = {'expressions': True, 'sorted_by': False, 'buckets': True}
key = 'clusteredbyproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DictProperty(Property): View Source

    2043class DictProperty(Property):
    2044    arg_types = {"this": True, "kind": True, "settings": False}

arg_types = {'this': True, 'kind': True, 'settings': False}
key = 'dictproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DictSubProperty(Property): View Source

    2047class DictSubProperty(Property):
    2048    pass

key = 'dictsubproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Property
  arg_types

class DictRange(Property): View Source

    2051class DictRange(Property):
    2052    arg_types = {"this": True, "min": True, "max": True}

arg_types = {'this': True, 'min': True, 'max': True}
key = 'dictrange'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class OnCluster(Property): View Source

    2057class OnCluster(Property):
    2058    arg_types = {"this": True}

arg_types = {'this': True}
key = 'oncluster'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class LikeProperty(Property): View Source

    2061class LikeProperty(Property):
    2062    arg_types = {"this": True, "expressions": False}

arg_types = {'this': True, 'expressions': False}
key = 'likeproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class LocationProperty(Property): View Source

    2065class LocationProperty(Property):
    2066    arg_types = {"this": True}

arg_types = {'this': True}
key = 'locationproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class LockingProperty(Property): View Source

    2069class LockingProperty(Property):
    2070    arg_types = {
    2071        "this": False,
    2072        "kind": True,
    2073        "for_or_in": True,
    2074        "lock_type": True,
    2075        "override": False,
    2076    }

arg_types = {'this': False, 'kind': True, 'for_or_in': True, 'lock_type': True, 'override': False}
key = 'lockingproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class LogProperty(Property): View Source

    2079class LogProperty(Property):
    2080    arg_types = {"no": True}

arg_types = {'no': True}
key = 'logproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class MaterializedProperty(Property): View Source

    2083class MaterializedProperty(Property):
    2084    arg_types = {"this": False}

arg_types = {'this': False}
key = 'materializedproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class MergeBlockRatioProperty(Property): View Source

    2087class MergeBlockRatioProperty(Property):
    2088    arg_types = {"this": False, "no": False, "default": False, "percent": False}

arg_types = {'this': False, 'no': False, 'default': False, 'percent': False}
key = 'mergeblockratioproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class NoPrimaryIndexProperty(Property): View Source

    2091class NoPrimaryIndexProperty(Property):
    2092    arg_types = {}

arg_types = {}
key = 'noprimaryindexproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class OnProperty(Property): View Source

    2095class OnProperty(Property):
    2096    arg_types = {"this": True}

arg_types = {'this': True}
key = 'onproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class OnCommitProperty(Property): View Source

    2099class OnCommitProperty(Property):
    2100    arg_types = {"delete": False}

arg_types = {'delete': False}
key = 'oncommitproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class PartitionedByProperty(Property): View Source

    2103class PartitionedByProperty(Property):
    2104    arg_types = {"this": True}

arg_types = {'this': True}
key = 'partitionedbyproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class ReturnsProperty(Property): View Source

    2107class ReturnsProperty(Property):
    2108    arg_types = {"this": True, "is_table": False, "table": False}

arg_types = {'this': True, 'is_table': False, 'table': False}
key = 'returnsproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class RowFormatProperty(Property): View Source

    2111class RowFormatProperty(Property):
    2112    arg_types = {"this": True}

arg_types = {'this': True}
key = 'rowformatproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class RowFormatDelimitedProperty(Property): View Source

    2115class RowFormatDelimitedProperty(Property):
    2116    # https://cwiki.apache.org/confluence/display/hive/languagemanual+dml
    2117    arg_types = {
    2118        "fields": False,
    2119        "escaped": False,
    2120        "collection_items": False,
    2121        "map_keys": False,
    2122        "lines": False,
    2123        "null": False,
    2124        "serde": False,
    2125    }

arg_types = {'fields': False, 'escaped': False, 'collection_items': False, 'map_keys': False, 'lines': False, 'null': False, 'serde': False}
key = 'rowformatdelimitedproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class RowFormatSerdeProperty(Property): View Source

    2128class RowFormatSerdeProperty(Property):
    2129    arg_types = {"this": True, "serde_properties": False}

arg_types = {'this': True, 'serde_properties': False}
key = 'rowformatserdeproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class QueryTransform(Expression): View Source

    2133class QueryTransform(Expression):
    2134    arg_types = {
    2135        "expressions": True,
    2136        "command_script": True,
    2137        "schema": False,
    2138        "row_format_before": False,
    2139        "record_writer": False,
    2140        "row_format_after": False,
    2141        "record_reader": False,
    2142    }

arg_types = {'expressions': True, 'command_script': True, 'schema': False, 'row_format_before': False, 'record_writer': False, 'row_format_after': False, 'record_reader': False}
key = 'querytransform'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class SchemaCommentProperty(Property): View Source

    2145class SchemaCommentProperty(Property):
    2146    arg_types = {"this": True}

arg_types = {'this': True}
key = 'schemacommentproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class SerdeProperties(Property): View Source

    2149class SerdeProperties(Property):
    2150    arg_types = {"expressions": True}

arg_types = {'expressions': True}
key = 'serdeproperties'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class SetProperty(Property): View Source

    2153class SetProperty(Property):
    2154    arg_types = {"multi": True}

arg_types = {'multi': True}
key = 'setproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class SettingsProperty(Property): View Source

    2157class SettingsProperty(Property):
    2158    arg_types = {"expressions": True}

arg_types = {'expressions': True}
key = 'settingsproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class SortKeyProperty(Property): View Source

    2161class SortKeyProperty(Property):
    2162    arg_types = {"this": True, "compound": False}

arg_types = {'this': True, 'compound': False}
key = 'sortkeyproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class SqlSecurityProperty(Property): View Source

    2165class SqlSecurityProperty(Property):
    2166    arg_types = {"definer": True}

arg_types = {'definer': True}
key = 'sqlsecurityproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class StabilityProperty(Property): View Source

    2169class StabilityProperty(Property):
    2170    arg_types = {"this": True}

arg_types = {'this': True}
key = 'stabilityproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TemporaryProperty(Property): View Source

    2173class TemporaryProperty(Property):
    2174    arg_types = {}

arg_types = {}
key = 'temporaryproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TransientProperty(Property): View Source

    2177class TransientProperty(Property):
    2178    arg_types = {"this": False}

arg_types = {'this': False}
key = 'transientproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class VolatileProperty(Property): View Source

    2181class VolatileProperty(Property):
    2182    arg_types = {"this": False}

arg_types = {'this': False}
key = 'volatileproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class WithDataProperty(Property): View Source

    2185class WithDataProperty(Property):
    2186    arg_types = {"no": True, "statistics": False}

arg_types = {'no': True, 'statistics': False}
key = 'withdataproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class WithJournalTableProperty(Property): View Source

    2189class WithJournalTableProperty(Property):
    2190    arg_types = {"this": True}

arg_types = {'this': True}
key = 'withjournaltableproperty'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Properties(Expression): View Source

    2193class Properties(Expression):
    2194    arg_types = {"expressions": True}
    2195
    2196    NAME_TO_PROPERTY = {
    2197        "ALGORITHM": AlgorithmProperty,
    2198        "AUTO_INCREMENT": AutoIncrementProperty,
    2199        "CHARACTER SET": CharacterSetProperty,
    2200        "CLUSTERED_BY": ClusteredByProperty,
    2201        "COLLATE": CollateProperty,
    2202        "COMMENT": SchemaCommentProperty,
    2203        "DEFINER": DefinerProperty,
    2204        "DISTKEY": DistKeyProperty,
    2205        "DISTSTYLE": DistStyleProperty,
    2206        "ENGINE": EngineProperty,
    2207        "EXECUTE AS": ExecuteAsProperty,
    2208        "FORMAT": FileFormatProperty,
    2209        "LANGUAGE": LanguageProperty,
    2210        "LOCATION": LocationProperty,
    2211        "PARTITIONED_BY": PartitionedByProperty,
    2212        "RETURNS": ReturnsProperty,
    2213        "ROW_FORMAT": RowFormatProperty,
    2214        "SORTKEY": SortKeyProperty,
    2215    }
    2216
    2217    PROPERTY_TO_NAME = {v: k for k, v in NAME_TO_PROPERTY.items()}
    2218
    2219    # CREATE property locations
    2220    # Form: schema specified
    2221    #   create [POST_CREATE]
    2222    #     table a [POST_NAME]
    2223    #     (b int) [POST_SCHEMA]
    2224    #     with ([POST_WITH])
    2225    #     index (b) [POST_INDEX]
    2226    #
    2227    # Form: alias selection
    2228    #   create [POST_CREATE]
    2229    #     table a [POST_NAME]
    2230    #     as [POST_ALIAS] (select * from b) [POST_EXPRESSION]
    2231    #     index (c) [POST_INDEX]
    2232    class Location(AutoName):
    2233        POST_CREATE = auto()
    2234        POST_NAME = auto()
    2235        POST_SCHEMA = auto()
    2236        POST_WITH = auto()
    2237        POST_ALIAS = auto()
    2238        POST_EXPRESSION = auto()
    2239        POST_INDEX = auto()
    2240        UNSUPPORTED = auto()
    2241
    2242    @classmethod
    2243    def from_dict(cls, properties_dict: t.Dict) -> Properties:
    2244        expressions = []
    2245        for key, value in properties_dict.items():
    2246            property_cls = cls.NAME_TO_PROPERTY.get(key.upper())
    2247            if property_cls:
    2248                expressions.append(property_cls(this=convert(value)))
    2249            else:
    2250                expressions.append(Property(this=Literal.string(key), value=convert(value)))
    2251
    2252        return cls(expressions=expressions)

arg_types = {'expressions': True}
NAME_TO_PROPERTY = {'ALGORITHM': <class 'AlgorithmProperty'>, 'AUTO_INCREMENT': <class 'AutoIncrementProperty'>, 'CHARACTER SET': <class 'CharacterSetProperty'>, 'CLUSTERED_BY': <class 'ClusteredByProperty'>, 'COLLATE': <class 'CollateProperty'>, 'COMMENT': <class 'SchemaCommentProperty'>, 'DEFINER': <class 'DefinerProperty'>, 'DISTKEY': <class 'DistKeyProperty'>, 'DISTSTYLE': <class 'DistStyleProperty'>, 'ENGINE': <class 'EngineProperty'>, 'EXECUTE AS': <class 'ExecuteAsProperty'>, 'FORMAT': <class 'FileFormatProperty'>, 'LANGUAGE': <class 'LanguageProperty'>, 'LOCATION': <class 'LocationProperty'>, 'PARTITIONED_BY': <class 'PartitionedByProperty'>, 'RETURNS': <class 'ReturnsProperty'>, 'ROW_FORMAT': <class 'RowFormatProperty'>, 'SORTKEY': <class 'SortKeyProperty'>}
PROPERTY_TO_NAME = {<class 'AlgorithmProperty'>: 'ALGORITHM', <class 'AutoIncrementProperty'>: 'AUTO_INCREMENT', <class 'CharacterSetProperty'>: 'CHARACTER SET', <class 'ClusteredByProperty'>: 'CLUSTERED_BY', <class 'CollateProperty'>: 'COLLATE', <class 'SchemaCommentProperty'>: 'COMMENT', <class 'DefinerProperty'>: 'DEFINER', <class 'DistKeyProperty'>: 'DISTKEY', <class 'DistStyleProperty'>: 'DISTSTYLE', <class 'EngineProperty'>: 'ENGINE', <class 'ExecuteAsProperty'>: 'EXECUTE AS', <class 'FileFormatProperty'>: 'FORMAT', <class 'LanguageProperty'>: 'LANGUAGE', <class 'LocationProperty'>: 'LOCATION', <class 'PartitionedByProperty'>: 'PARTITIONED_BY', <class 'ReturnsProperty'>: 'RETURNS', <class 'RowFormatProperty'>: 'ROW_FORMAT', <class 'SortKeyProperty'>: 'SORTKEY'}
@classmethod
def from_dict(cls, properties_dict: Dict) -> Properties: View Source

    2242    @classmethod
    2243    def from_dict(cls, properties_dict: t.Dict) -> Properties:
    2244        expressions = []
    2245        for key, value in properties_dict.items():
    2246            property_cls = cls.NAME_TO_PROPERTY.get(key.upper())
    2247            if property_cls:
    2248                expressions.append(property_cls(this=convert(value)))
    2249            else:
    2250                expressions.append(Property(this=Literal.string(key), value=convert(value)))
    2251
    2252        return cls(expressions=expressions)

key = 'properties'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Properties.Location(sqlglot.helper.AutoName): View Source

    2232    class Location(AutoName):
    2233        POST_CREATE = auto()
    2234        POST_NAME = auto()
    2235        POST_SCHEMA = auto()
    2236        POST_WITH = auto()
    2237        POST_ALIAS = auto()
    2238        POST_EXPRESSION = auto()
    2239        POST_INDEX = auto()
    2240        UNSUPPORTED = auto()

An enumeration.

POST_CREATE = <Location.POST_CREATE: 'POST_CREATE'>
POST_NAME = <Location.POST_NAME: 'POST_NAME'>
POST_SCHEMA = <Location.POST_SCHEMA: 'POST_SCHEMA'>
POST_WITH = <Location.POST_WITH: 'POST_WITH'>
POST_ALIAS = <Location.POST_ALIAS: 'POST_ALIAS'>
POST_EXPRESSION = <Location.POST_EXPRESSION: 'POST_EXPRESSION'>
POST_INDEX = <Location.POST_INDEX: 'POST_INDEX'>
UNSUPPORTED = <Location.UNSUPPORTED: 'UNSUPPORTED'>

##### Inherited Members

enum.Enum
  name
  value

class Qualify(Expression): View Source

    2255class Qualify(Expression):
    2256    pass

key = 'qualify'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Return(Expression): View Source

    2260class Return(Expression):
    2261    pass

key = 'return'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Reference(Expression): View Source

    2264class Reference(Expression):
    2265    arg_types = {"this": True, "expressions": False, "options": False}

arg_types = {'this': True, 'expressions': False, 'options': False}
key = 'reference'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Tuple(Expression): View Source

    2268class Tuple(Expression):
    2269    arg_types = {"expressions": False}
    2270
    2271    def isin(
    2272        self,
    2273        *expressions: t.Any,
    2274        query: t.Optional[ExpOrStr] = None,
    2275        unnest: t.Optional[ExpOrStr] | t.Collection[ExpOrStr] = None,
    2276        copy: bool = True,
    2277        **opts,
    2278    ) -> In:
    2279        return In(
    2280            this=maybe_copy(self, copy),
    2281            expressions=[convert(e, copy=copy) for e in expressions],
    2282            query=maybe_parse(query, copy=copy, **opts) if query else None,
    2283            unnest=Unnest(
    2284                expressions=[
    2285                    maybe_parse(t.cast(ExpOrStr, e), copy=copy, **opts) for e in ensure_list(unnest)
    2286                ]
    2287            )
    2288            if unnest
    2289            else None,
    2290        )

arg_types = {'expressions': False}
def isin( self, *expressions: Any, query: Union[str, Expression, NoneType] = None, unnest: Union[str, Expression, NoneType, Collection[Union[str, Expression]]] = None, copy: bool = True, **opts) -> In: View Source

    2271    def isin(
    2272        self,
    2273        *expressions: t.Any,
    2274        query: t.Optional[ExpOrStr] = None,
    2275        unnest: t.Optional[ExpOrStr] | t.Collection[ExpOrStr] = None,
    2276        copy: bool = True,
    2277        **opts,
    2278    ) -> In:
    2279        return In(
    2280            this=maybe_copy(self, copy),
    2281            expressions=[convert(e, copy=copy) for e in expressions],
    2282            query=maybe_parse(query, copy=copy, **opts) if query else None,
    2283            unnest=Unnest(
    2284                expressions=[
    2285                    maybe_parse(t.cast(ExpOrStr, e), copy=copy, **opts) for e in ensure_list(unnest)
    2286                ]
    2287            )
    2288            if unnest
    2289            else None,
    2290        )

key = 'tuple'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Subqueryable(Unionable): View Source

    2293class Subqueryable(Unionable):
    2294    def subquery(self, alias: t.Optional[ExpOrStr] = None, copy: bool = True) -> Subquery:
    2295        """
    2296        Convert this expression to an aliased expression that can be used as a Subquery.
    2297
    2298        Example:
    2299            >>> subquery = Select().select("x").from_("tbl").subquery()
    2300            >>> Select().select("x").from_(subquery).sql()
    2301            'SELECT x FROM (SELECT x FROM tbl)'
    2302
    2303        Args:
    2304            alias (str | Identifier): an optional alias for the subquery
    2305            copy (bool): if `False`, modify this expression instance in-place.
    2306
    2307        Returns:
    2308            Alias: the subquery
    2309        """
    2310        instance = maybe_copy(self, copy)
    2311        if not isinstance(alias, Expression):
    2312            alias = TableAlias(this=to_identifier(alias)) if alias else None
    2313
    2314        return Subquery(this=instance, alias=alias)
    2315
    2316    def limit(
    2317        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2318    ) -> Select:
    2319        raise NotImplementedError
    2320
    2321    @property
    2322    def ctes(self):
    2323        with_ = self.args.get("with")
    2324        if not with_:
    2325            return []
    2326        return with_.expressions
    2327
    2328    @property
    2329    def selects(self) -> t.List[Expression]:
    2330        raise NotImplementedError("Subqueryable objects must implement `selects`")
    2331
    2332    @property
    2333    def named_selects(self) -> t.List[str]:
    2334        raise NotImplementedError("Subqueryable objects must implement `named_selects`")
    2335
    2336    def select(
    2337        self,
    2338        *expressions: t.Optional[ExpOrStr],
    2339        append: bool = True,
    2340        dialect: DialectType = None,
    2341        copy: bool = True,
    2342        **opts,
    2343    ) -> Subqueryable:
    2344        raise NotImplementedError("Subqueryable objects must implement `select`")
    2345
    2346    def with_(
    2347        self,
    2348        alias: ExpOrStr,
    2349        as_: ExpOrStr,
    2350        recursive: t.Optional[bool] = None,
    2351        append: bool = True,
    2352        dialect: DialectType = None,
    2353        copy: bool = True,
    2354        **opts,
    2355    ) -> Subqueryable:
    2356        """
    2357        Append to or set the common table expressions.
    2358
    2359        Example:
    2360            >>> Select().with_("tbl2", as_="SELECT * FROM tbl").select("x").from_("tbl2").sql()
    2361            'WITH tbl2 AS (SELECT * FROM tbl) SELECT x FROM tbl2'
    2362
    2363        Args:
    2364            alias: the SQL code string to parse as the table name.
    2365                If an `Expression` instance is passed, this is used as-is.
    2366            as_: the SQL code string to parse as the table expression.
    2367                If an `Expression` instance is passed, it will be used as-is.
    2368            recursive: set the RECURSIVE part of the expression. Defaults to `False`.
    2369            append: if `True`, add to any existing expressions.
    2370                Otherwise, this resets the expressions.
    2371            dialect: the dialect used to parse the input expression.
    2372            copy: if `False`, modify this expression instance in-place.
    2373            opts: other options to use to parse the input expressions.
    2374
    2375        Returns:
    2376            The modified expression.
    2377        """
    2378        return _apply_cte_builder(
    2379            self, alias, as_, recursive=recursive, append=append, dialect=dialect, copy=copy, **opts
    2380        )

def subquery( self, alias: Union[str, Expression, NoneType] = None, copy: bool = True) -> Subquery: View Source

    2294    def subquery(self, alias: t.Optional[ExpOrStr] = None, copy: bool = True) -> Subquery:
    2295        """
    2296        Convert this expression to an aliased expression that can be used as a Subquery.
    2297
    2298        Example:
    2299            >>> subquery = Select().select("x").from_("tbl").subquery()
    2300            >>> Select().select("x").from_(subquery).sql()
    2301            'SELECT x FROM (SELECT x FROM tbl)'
    2302
    2303        Args:
    2304            alias (str | Identifier): an optional alias for the subquery
    2305            copy (bool): if `False`, modify this expression instance in-place.
    2306
    2307        Returns:
    2308            Alias: the subquery
    2309        """
    2310        instance = maybe_copy(self, copy)
    2311        if not isinstance(alias, Expression):
    2312            alias = TableAlias(this=to_identifier(alias)) if alias else None
    2313
    2314        return Subquery(this=instance, alias=alias)

Convert this expression to an aliased expression that can be used as a Subquery.

###### Example:

>     >>> subquery = Select().select("x").from_("tbl").subquery()
>     >>> Select().select("x").from_(subquery).sql()
>     'SELECT x FROM (SELECT x FROM tbl)'

###### Arguments:

- alias (str | Identifier): an optional alias for the subquery
- copy (bool): if `False`, modify this expression instance in-place.

###### Returns:

> Alias: the subquery

def limit( self, expression: Union[str, Expression, int], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2316    def limit(
    2317        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2318    ) -> Select:
    2319        raise NotImplementedError

ctes
selects: List[Expression]
named_selects: List[str]
def select( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Subqueryable: View Source

    2336    def select(
    2337        self,
    2338        *expressions: t.Optional[ExpOrStr],
    2339        append: bool = True,
    2340        dialect: DialectType = None,
    2341        copy: bool = True,
    2342        **opts,
    2343    ) -> Subqueryable:
    2344        raise NotImplementedError("Subqueryable objects must implement `select`")

def with_( self, alias: Union[str, Expression], as_: Union[str, Expression], recursive: Optional[bool] = None, append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Subqueryable: View Source

    2346    def with_(
    2347        self,
    2348        alias: ExpOrStr,
    2349        as_: ExpOrStr,
    2350        recursive: t.Optional[bool] = None,
    2351        append: bool = True,
    2352        dialect: DialectType = None,
    2353        copy: bool = True,
    2354        **opts,
    2355    ) -> Subqueryable:
    2356        """
    2357        Append to or set the common table expressions.
    2358
    2359        Example:
    2360            >>> Select().with_("tbl2", as_="SELECT * FROM tbl").select("x").from_("tbl2").sql()
    2361            'WITH tbl2 AS (SELECT * FROM tbl) SELECT x FROM tbl2'
    2362
    2363        Args:
    2364            alias: the SQL code string to parse as the table name.
    2365                If an `Expression` instance is passed, this is used as-is.
    2366            as_: the SQL code string to parse as the table expression.
    2367                If an `Expression` instance is passed, it will be used as-is.
    2368            recursive: set the RECURSIVE part of the expression. Defaults to `False`.
    2369            append: if `True`, add to any existing expressions.
    2370                Otherwise, this resets the expressions.
    2371            dialect: the dialect used to parse the input expression.
    2372            copy: if `False`, modify this expression instance in-place.
    2373            opts: other options to use to parse the input expressions.
    2374
    2375        Returns:
    2376            The modified expression.
    2377        """
    2378        return _apply_cte_builder(
    2379            self, alias, as_, recursive=recursive, append=append, dialect=dialect, copy=copy, **opts
    2380        )

Append to or set the common table expressions.

###### Example:

>     >>> Select().with_("tbl2", as_="SELECT * FROM tbl").select("x").from_("tbl2").sql()
>     'WITH tbl2 AS (SELECT * FROM tbl) SELECT x FROM tbl2'

###### Arguments:

- alias: the SQL code string to parse as the table name. If an `Expression` instance is passed, this is used as-is.
- as_: the SQL code string to parse as the table expression. If an `Expression` instance is passed, it will be used as-is.
- recursive: set the RECURSIVE part of the expression. Defaults to `False`.
- append: if `True`, add to any existing expressions. Otherwise, this resets the expressions.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified expression.

key = 'subqueryable'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Unionable
  union
  intersect
  except_

QUERY_MODIFIERS = {'match': False, 'laterals': False, 'joins': False, 'connect': False, 'pivots': False, 'where': False, 'group': False, 'having': False, 'qualify': False, 'windows': False, 'distribute': False, 'sort': False, 'cluster': False, 'order': False, 'limit': False, 'offset': False, 'locks': False, 'sample': False, 'settings': False, 'format': False}
class WithTableHint(Expression): View Source

    2408class WithTableHint(Expression):
    2409    arg_types = {"expressions": True}

arg_types = {'expressions': True}
key = 'withtablehint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class IndexTableHint(Expression): View Source

    2413class IndexTableHint(Expression):
    2414    arg_types = {"this": True, "expressions": False, "target": False}

arg_types = {'this': True, 'expressions': False, 'target': False}
key = 'indextablehint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Table(Expression): View Source

    2417class Table(Expression):
    2418    arg_types = {
    2419        "this": True,
    2420        "alias": False,
    2421        "db": False,
    2422        "catalog": False,
    2423        "laterals": False,
    2424        "joins": False,
    2425        "pivots": False,
    2426        "hints": False,
    2427        "system_time": False,
    2428        "version": False,
    2429    }
    2430
    2431    @property
    2432    def name(self) -> str:
    2433        if isinstance(self.this, Func):
    2434            return ""
    2435        return self.this.name
    2436
    2437    @property
    2438    def db(self) -> str:
    2439        return self.text("db")
    2440
    2441    @property
    2442    def catalog(self) -> str:
    2443        return self.text("catalog")
    2444
    2445    @property
    2446    def selects(self) -> t.List[Expression]:
    2447        return []
    2448
    2449    @property
    2450    def named_selects(self) -> t.List[str]:
    2451        return []
    2452
    2453    @property
    2454    def parts(self) -> t.List[Identifier]:
    2455        """Return the parts of a table in order catalog, db, table."""
    2456        parts: t.List[Identifier] = []
    2457
    2458        for arg in ("catalog", "db", "this"):
    2459            part = self.args.get(arg)
    2460
    2461            if isinstance(part, Identifier):
    2462                parts.append(part)
    2463            elif isinstance(part, Dot):
    2464                parts.extend(part.flatten())
    2465
    2466        return parts

arg_types = {'this': True, 'alias': False, 'db': False, 'catalog': False, 'laterals': False, 'joins': False, 'pivots': False, 'hints': False, 'system_time': False, 'version': False}
name: str
db: str
catalog: str
selects: List[Expression]
named_selects: List[str]
parts: List[Identifier]

Return the parts of a table in order catalog, db, table.

key = 'table'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Union(Subqueryable): View Source

    2469class Union(Subqueryable):
    2470    arg_types = {
    2471        "with": False,
    2472        "this": True,
    2473        "expression": True,
    2474        "distinct": False,
    2475        "by_name": False,
    2476        **QUERY_MODIFIERS,
    2477    }
    2478
    2479    def limit(
    2480        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2481    ) -> Select:
    2482        """
    2483        Set the LIMIT expression.
    2484
    2485        Example:
    2486            >>> select("1").union(select("1")).limit(1).sql()
    2487            'SELECT * FROM (SELECT 1 UNION SELECT 1) AS _l_0 LIMIT 1'
    2488
    2489        Args:
    2490            expression: the SQL code string to parse.
    2491                This can also be an integer.
    2492                If a `Limit` instance is passed, this is used as-is.
    2493                If another `Expression` instance is passed, it will be wrapped in a `Limit`.
    2494            dialect: the dialect used to parse the input expression.
    2495            copy: if `False`, modify this expression instance in-place.
    2496            opts: other options to use to parse the input expressions.
    2497
    2498        Returns:
    2499            The limited subqueryable.
    2500        """
    2501        return (
    2502            select("*")
    2503            .from_(self.subquery(alias="_l_0", copy=copy))
    2504            .limit(expression, dialect=dialect, copy=False, **opts)
    2505        )
    2506
    2507    def select(
    2508        self,
    2509        *expressions: t.Optional[ExpOrStr],
    2510        append: bool = True,
    2511        dialect: DialectType = None,
    2512        copy: bool = True,
    2513        **opts,
    2514    ) -> Union:
    2515        """Append to or set the SELECT of the union recursively.
    2516
    2517        Example:
    2518            >>> from sqlglot import parse_one
    2519            >>> parse_one("select a from x union select a from y union select a from z").select("b").sql()
    2520            'SELECT a, b FROM x UNION SELECT a, b FROM y UNION SELECT a, b FROM z'
    2521
    2522        Args:
    2523            *expressions: the SQL code strings to parse.
    2524                If an `Expression` instance is passed, it will be used as-is.
    2525            append: if `True`, add to any existing expressions.
    2526                Otherwise, this resets the expressions.
    2527            dialect: the dialect used to parse the input expressions.
    2528            copy: if `False`, modify this expression instance in-place.
    2529            opts: other options to use to parse the input expressions.
    2530
    2531        Returns:
    2532            Union: the modified expression.
    2533        """
    2534        this = self.copy() if copy else self
    2535        this.this.unnest().select(*expressions, append=append, dialect=dialect, copy=False, **opts)
    2536        this.expression.unnest().select(
    2537            *expressions, append=append, dialect=dialect, copy=False, **opts
    2538        )
    2539        return this
    2540
    2541    @property
    2542    def named_selects(self) -> t.List[str]:
    2543        return self.this.unnest().named_selects
    2544
    2545    @property
    2546    def is_star(self) -> bool:
    2547        return self.this.is_star or self.expression.is_star
    2548
    2549    @property
    2550    def selects(self) -> t.List[Expression]:
    2551        return self.this.unnest().selects
    2552
    2553    @property
    2554    def left(self):
    2555        return self.this
    2556
    2557    @property
    2558    def right(self):
    2559        return self.expression

arg_types = {'with': False, 'this': True, 'expression': True, 'distinct': False, 'by_name': False, 'match': False, 'laterals': False, 'joins': False, 'connect': False, 'pivots': False, 'where': False, 'group': False, 'having': False, 'qualify': False, 'windows': False, 'distribute': False, 'sort': False, 'cluster': False, 'order': False, 'limit': False, 'offset': False, 'locks': False, 'sample': False, 'settings': False, 'format': False}
def limit( self, expression: Union[str, Expression, int], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2479    def limit(
    2480        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2481    ) -> Select:
    2482        """
    2483        Set the LIMIT expression.
    2484
    2485        Example:
    2486            >>> select("1").union(select("1")).limit(1).sql()
    2487            'SELECT * FROM (SELECT 1 UNION SELECT 1) AS _l_0 LIMIT 1'
    2488
    2489        Args:
    2490            expression: the SQL code string to parse.
    2491                This can also be an integer.
    2492                If a `Limit` instance is passed, this is used as-is.
    2493                If another `Expression` instance is passed, it will be wrapped in a `Limit`.
    2494            dialect: the dialect used to parse the input expression.
    2495            copy: if `False`, modify this expression instance in-place.
    2496            opts: other options to use to parse the input expressions.
    2497
    2498        Returns:
    2499            The limited subqueryable.
    2500        """
    2501        return (
    2502            select("*")
    2503            .from_(self.subquery(alias="_l_0", copy=copy))
    2504            .limit(expression, dialect=dialect, copy=False, **opts)
    2505        )

Set the LIMIT expression.

###### Example:

>     >>> select("1").union(select("1")).limit(1).sql()
>     'SELECT * FROM (SELECT 1 UNION SELECT 1) AS _l_0 LIMIT 1'

###### Arguments:

- expression: the SQL code string to parse. This can also be an integer. If a `Limit` instance is passed, this is used as-is. If another `Expression` instance is passed, it will be wrapped in a `Limit`.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The limited subqueryable.

def select( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Union: View Source

    2507    def select(
    2508        self,
    2509        *expressions: t.Optional[ExpOrStr],
    2510        append: bool = True,
    2511        dialect: DialectType = None,
    2512        copy: bool = True,
    2513        **opts,
    2514    ) -> Union:
    2515        """Append to or set the SELECT of the union recursively.
    2516
    2517        Example:
    2518            >>> from sqlglot import parse_one
    2519            >>> parse_one("select a from x union select a from y union select a from z").select("b").sql()
    2520            'SELECT a, b FROM x UNION SELECT a, b FROM y UNION SELECT a, b FROM z'
    2521
    2522        Args:
    2523            *expressions: the SQL code strings to parse.
    2524                If an `Expression` instance is passed, it will be used as-is.
    2525            append: if `True`, add to any existing expressions.
    2526                Otherwise, this resets the expressions.
    2527            dialect: the dialect used to parse the input expressions.
    2528            copy: if `False`, modify this expression instance in-place.
    2529            opts: other options to use to parse the input expressions.
    2530
    2531        Returns:
    2532            Union: the modified expression.
    2533        """
    2534        this = self.copy() if copy else self
    2535        this.this.unnest().select(*expressions, append=append, dialect=dialect, copy=False, **opts)
    2536        this.expression.unnest().select(
    2537            *expressions, append=append, dialect=dialect, copy=False, **opts
    2538        )
    2539        return this

Append to or set the SELECT of the union recursively.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("select a from x union select a from y union select a from z").select("b").sql()
>     'SELECT a, b FROM x UNION SELECT a, b FROM y UNION SELECT a, b FROM z'

###### Arguments:

- *expressions: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is.
- append: if `True`, add to any existing expressions. Otherwise, this resets the expressions.
- dialect: the dialect used to parse the input expressions.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> Union: the modified expression.

named_selects: List[str]
is_star: bool

Checks whether an expression is a star.

selects: List[Expression]
left
right
key = 'union'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Subqueryable
  subquery
  ctes
  with_
Unionable
  union
  intersect
  except_

class Except(Union): View Source

    2562class Except(Union):
    2563    pass

key = 'except'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Union
  arg_types
  limit
  select
  named_selects
  is_star
  selects
  left
  right
Subqueryable
  subquery
  ctes
  with_
Unionable
  union
  intersect
  except_

class Intersect(Union): View Source

    2566class Intersect(Union):
    2567    pass

key = 'intersect'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Union
  arg_types
  limit
  select
  named_selects
  is_star
  selects
  left
  right
Subqueryable
  subquery
  ctes
  with_
Unionable
  union
  intersect
  except_

class Unnest(UDTF): View Source

    2570class Unnest(UDTF):
    2571    arg_types = {
    2572        "expressions": True,
    2573        "ordinality": False,
    2574        "alias": False,
    2575        "offset": False,
    2576    }

arg_types = {'expressions': True, 'ordinality': False, 'alias': False, 'offset': False}
key = 'unnest'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
UDTF
  selects
DerivedTable
  named_selects
Unionable
  union
  intersect
  except_

class Update(Expression): View Source

    2579class Update(Expression):
    2580    arg_types = {
    2581        "with": False,
    2582        "this": False,
    2583        "expressions": True,
    2584        "from": False,
    2585        "where": False,
    2586        "returning": False,
    2587        "order": False,
    2588        "limit": False,
    2589    }

arg_types = {'with': False, 'this': False, 'expressions': True, 'from': False, 'where': False, 'returning': False, 'order': False, 'limit': False}
key = 'update'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Values(UDTF): View Source

    2592class Values(UDTF):
    2593    arg_types = {
    2594        "expressions": True,
    2595        "ordinality": False,
    2596        "alias": False,
    2597    }

arg_types = {'expressions': True, 'ordinality': False, 'alias': False}
key = 'values'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
UDTF
  selects
DerivedTable
  named_selects
Unionable
  union
  intersect
  except_

class Var(Expression): View Source

    2600class Var(Expression):
    2601    pass

key = 'var'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Version(Expression): View Source

    2604class Version(Expression):
    2605    """
    2606    Time travel, iceberg, bigquery etc
    2607    https://trino.io/docs/current/connector/iceberg.html?highlight=snapshot#using-snapshots
    2608    https://www.databricks.com/blog/2019/02/04/introducing-delta-time-travel-for-large-scale-data-lakes.html
    2609    https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#for_system_time_as_of
    2610    https://learn.microsoft.com/en-us/sql/relational-databases/tables/querying-data-in-a-system-versioned-temporal-table?view=sql-server-ver16
    2611    this is either TIMESTAMP or VERSION
    2612    kind is ("AS OF", "BETWEEN")
    2613    """
    2614
    2615    arg_types = {"this": True, "kind": True, "expression": False}

Time travel, iceberg, bigquery etc https://trino.io/docs/current/connector/iceberg.html?highlight=snapshot#using-snapshots https://www.databricks.com/blog/2019/02/04/introducing-delta-time-travel-for-large-scale-data-lakes.html https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#for_system_time_as_of https://learn.microsoft.com/en-us/sql/relational-databases/tables/querying-data-in-a-system-versioned-temporal-table?view=sql-server-ver16 this is either TIMESTAMP or VERSION kind is ("AS OF", "BETWEEN")

arg_types = {'this': True, 'kind': True, 'expression': False}
key = 'version'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Schema(Expression): View Source

    2618class Schema(Expression):
    2619    arg_types = {"this": False, "expressions": False}

arg_types = {'this': False, 'expressions': False}
key = 'schema'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Lock(Expression): View Source

    2624class Lock(Expression):
    2625    arg_types = {"update": True, "expressions": False, "wait": False}

arg_types = {'update': True, 'expressions': False, 'wait': False}
key = 'lock'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Select(Subqueryable): View Source

    2628class Select(Subqueryable):
    2629    arg_types = {
    2630        "with": False,
    2631        "kind": False,
    2632        "expressions": False,
    2633        "hint": False,
    2634        "distinct": False,
    2635        "into": False,
    2636        "from": False,
    2637        **QUERY_MODIFIERS,
    2638    }
    2639
    2640    def from_(
    2641        self, expression: ExpOrStr, dialect: DialectType = None, copy: bool = True, **opts
    2642    ) -> Select:
    2643        """
    2644        Set the FROM expression.
    2645
    2646        Example:
    2647            >>> Select().from_("tbl").select("x").sql()
    2648            'SELECT x FROM tbl'
    2649
    2650        Args:
    2651            expression : the SQL code strings to parse.
    2652                If a `From` instance is passed, this is used as-is.
    2653                If another `Expression` instance is passed, it will be wrapped in a `From`.
    2654            dialect: the dialect used to parse the input expression.
    2655            copy: if `False`, modify this expression instance in-place.
    2656            opts: other options to use to parse the input expressions.
    2657
    2658        Returns:
    2659            The modified Select expression.
    2660        """
    2661        return _apply_builder(
    2662            expression=expression,
    2663            instance=self,
    2664            arg="from",
    2665            into=From,
    2666            prefix="FROM",
    2667            dialect=dialect,
    2668            copy=copy,
    2669            **opts,
    2670        )
    2671
    2672    def group_by(
    2673        self,
    2674        *expressions: t.Optional[ExpOrStr],
    2675        append: bool = True,
    2676        dialect: DialectType = None,
    2677        copy: bool = True,
    2678        **opts,
    2679    ) -> Select:
    2680        """
    2681        Set the GROUP BY expression.
    2682
    2683        Example:
    2684            >>> Select().from_("tbl").select("x", "COUNT(1)").group_by("x").sql()
    2685            'SELECT x, COUNT(1) FROM tbl GROUP BY x'
    2686
    2687        Args:
    2688            *expressions: the SQL code strings to parse.
    2689                If a `Group` instance is passed, this is used as-is.
    2690                If another `Expression` instance is passed, it will be wrapped in a `Group`.
    2691                If nothing is passed in then a group by is not applied to the expression
    2692            append: if `True`, add to any existing expressions.
    2693                Otherwise, this flattens all the `Group` expression into a single expression.
    2694            dialect: the dialect used to parse the input expression.
    2695            copy: if `False`, modify this expression instance in-place.
    2696            opts: other options to use to parse the input expressions.
    2697
    2698        Returns:
    2699            The modified Select expression.
    2700        """
    2701        if not expressions:
    2702            return self if not copy else self.copy()
    2703
    2704        return _apply_child_list_builder(
    2705            *expressions,
    2706            instance=self,
    2707            arg="group",
    2708            append=append,
    2709            copy=copy,
    2710            prefix="GROUP BY",
    2711            into=Group,
    2712            dialect=dialect,
    2713            **opts,
    2714        )
    2715
    2716    def order_by(
    2717        self,
    2718        *expressions: t.Optional[ExpOrStr],
    2719        append: bool = True,
    2720        dialect: DialectType = None,
    2721        copy: bool = True,
    2722        **opts,
    2723    ) -> Select:
    2724        """
    2725        Set the ORDER BY expression.
    2726
    2727        Example:
    2728            >>> Select().from_("tbl").select("x").order_by("x DESC").sql()
    2729            'SELECT x FROM tbl ORDER BY x DESC'
    2730
    2731        Args:
    2732            *expressions: the SQL code strings to parse.
    2733                If a `Group` instance is passed, this is used as-is.
    2734                If another `Expression` instance is passed, it will be wrapped in a `Order`.
    2735            append: if `True`, add to any existing expressions.
    2736                Otherwise, this flattens all the `Order` expression into a single expression.
    2737            dialect: the dialect used to parse the input expression.
    2738            copy: if `False`, modify this expression instance in-place.
    2739            opts: other options to use to parse the input expressions.
    2740
    2741        Returns:
    2742            The modified Select expression.
    2743        """
    2744        return _apply_child_list_builder(
    2745            *expressions,
    2746            instance=self,
    2747            arg="order",
    2748            append=append,
    2749            copy=copy,
    2750            prefix="ORDER BY",
    2751            into=Order,
    2752            dialect=dialect,
    2753            **opts,
    2754        )
    2755
    2756    def sort_by(
    2757        self,
    2758        *expressions: t.Optional[ExpOrStr],
    2759        append: bool = True,
    2760        dialect: DialectType = None,
    2761        copy: bool = True,
    2762        **opts,
    2763    ) -> Select:
    2764        """
    2765        Set the SORT BY expression.
    2766
    2767        Example:
    2768            >>> Select().from_("tbl").select("x").sort_by("x DESC").sql(dialect="hive")
    2769            'SELECT x FROM tbl SORT BY x DESC'
    2770
    2771        Args:
    2772            *expressions: the SQL code strings to parse.
    2773                If a `Group` instance is passed, this is used as-is.
    2774                If another `Expression` instance is passed, it will be wrapped in a `SORT`.
    2775            append: if `True`, add to any existing expressions.
    2776                Otherwise, this flattens all the `Order` expression into a single expression.
    2777            dialect: the dialect used to parse the input expression.
    2778            copy: if `False`, modify this expression instance in-place.
    2779            opts: other options to use to parse the input expressions.
    2780
    2781        Returns:
    2782            The modified Select expression.
    2783        """
    2784        return _apply_child_list_builder(
    2785            *expressions,
    2786            instance=self,
    2787            arg="sort",
    2788            append=append,
    2789            copy=copy,
    2790            prefix="SORT BY",
    2791            into=Sort,
    2792            dialect=dialect,
    2793            **opts,
    2794        )
    2795
    2796    def cluster_by(
    2797        self,
    2798        *expressions: t.Optional[ExpOrStr],
    2799        append: bool = True,
    2800        dialect: DialectType = None,
    2801        copy: bool = True,
    2802        **opts,
    2803    ) -> Select:
    2804        """
    2805        Set the CLUSTER BY expression.
    2806
    2807        Example:
    2808            >>> Select().from_("tbl").select("x").cluster_by("x DESC").sql(dialect="hive")
    2809            'SELECT x FROM tbl CLUSTER BY x DESC'
    2810
    2811        Args:
    2812            *expressions: the SQL code strings to parse.
    2813                If a `Group` instance is passed, this is used as-is.
    2814                If another `Expression` instance is passed, it will be wrapped in a `Cluster`.
    2815            append: if `True`, add to any existing expressions.
    2816                Otherwise, this flattens all the `Order` expression into a single expression.
    2817            dialect: the dialect used to parse the input expression.
    2818            copy: if `False`, modify this expression instance in-place.
    2819            opts: other options to use to parse the input expressions.
    2820
    2821        Returns:
    2822            The modified Select expression.
    2823        """
    2824        return _apply_child_list_builder(
    2825            *expressions,
    2826            instance=self,
    2827            arg="cluster",
    2828            append=append,
    2829            copy=copy,
    2830            prefix="CLUSTER BY",
    2831            into=Cluster,
    2832            dialect=dialect,
    2833            **opts,
    2834        )
    2835
    2836    def limit(
    2837        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2838    ) -> Select:
    2839        """
    2840        Set the LIMIT expression.
    2841
    2842        Example:
    2843            >>> Select().from_("tbl").select("x").limit(10).sql()
    2844            'SELECT x FROM tbl LIMIT 10'
    2845
    2846        Args:
    2847            expression: the SQL code string to parse.
    2848                This can also be an integer.
    2849                If a `Limit` instance is passed, this is used as-is.
    2850                If another `Expression` instance is passed, it will be wrapped in a `Limit`.
    2851            dialect: the dialect used to parse the input expression.
    2852            copy: if `False`, modify this expression instance in-place.
    2853            opts: other options to use to parse the input expressions.
    2854
    2855        Returns:
    2856            Select: the modified expression.
    2857        """
    2858        return _apply_builder(
    2859            expression=expression,
    2860            instance=self,
    2861            arg="limit",
    2862            into=Limit,
    2863            prefix="LIMIT",
    2864            dialect=dialect,
    2865            copy=copy,
    2866            **opts,
    2867        )
    2868
    2869    def offset(
    2870        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2871    ) -> Select:
    2872        """
    2873        Set the OFFSET expression.
    2874
    2875        Example:
    2876            >>> Select().from_("tbl").select("x").offset(10).sql()
    2877            'SELECT x FROM tbl OFFSET 10'
    2878
    2879        Args:
    2880            expression: the SQL code string to parse.
    2881                This can also be an integer.
    2882                If a `Offset` instance is passed, this is used as-is.
    2883                If another `Expression` instance is passed, it will be wrapped in a `Offset`.
    2884            dialect: the dialect used to parse the input expression.
    2885            copy: if `False`, modify this expression instance in-place.
    2886            opts: other options to use to parse the input expressions.
    2887
    2888        Returns:
    2889            The modified Select expression.
    2890        """
    2891        return _apply_builder(
    2892            expression=expression,
    2893            instance=self,
    2894            arg="offset",
    2895            into=Offset,
    2896            prefix="OFFSET",
    2897            dialect=dialect,
    2898            copy=copy,
    2899            **opts,
    2900        )
    2901
    2902    def select(
    2903        self,
    2904        *expressions: t.Optional[ExpOrStr],
    2905        append: bool = True,
    2906        dialect: DialectType = None,
    2907        copy: bool = True,
    2908        **opts,
    2909    ) -> Select:
    2910        """
    2911        Append to or set the SELECT expressions.
    2912
    2913        Example:
    2914            >>> Select().select("x", "y").sql()
    2915            'SELECT x, y'
    2916
    2917        Args:
    2918            *expressions: the SQL code strings to parse.
    2919                If an `Expression` instance is passed, it will be used as-is.
    2920            append: if `True`, add to any existing expressions.
    2921                Otherwise, this resets the expressions.
    2922            dialect: the dialect used to parse the input expressions.
    2923            copy: if `False`, modify this expression instance in-place.
    2924            opts: other options to use to parse the input expressions.
    2925
    2926        Returns:
    2927            The modified Select expression.
    2928        """
    2929        return _apply_list_builder(
    2930            *expressions,
    2931            instance=self,
    2932            arg="expressions",
    2933            append=append,
    2934            dialect=dialect,
    2935            copy=copy,
    2936            **opts,
    2937        )
    2938
    2939    def lateral(
    2940        self,
    2941        *expressions: t.Optional[ExpOrStr],
    2942        append: bool = True,
    2943        dialect: DialectType = None,
    2944        copy: bool = True,
    2945        **opts,
    2946    ) -> Select:
    2947        """
    2948        Append to or set the LATERAL expressions.
    2949
    2950        Example:
    2951            >>> Select().select("x").lateral("OUTER explode(y) tbl2 AS z").from_("tbl").sql()
    2952            'SELECT x FROM tbl LATERAL VIEW OUTER EXPLODE(y) tbl2 AS z'
    2953
    2954        Args:
    2955            *expressions: the SQL code strings to parse.
    2956                If an `Expression` instance is passed, it will be used as-is.
    2957            append: if `True`, add to any existing expressions.
    2958                Otherwise, this resets the expressions.
    2959            dialect: the dialect used to parse the input expressions.
    2960            copy: if `False`, modify this expression instance in-place.
    2961            opts: other options to use to parse the input expressions.
    2962
    2963        Returns:
    2964            The modified Select expression.
    2965        """
    2966        return _apply_list_builder(
    2967            *expressions,
    2968            instance=self,
    2969            arg="laterals",
    2970            append=append,
    2971            into=Lateral,
    2972            prefix="LATERAL VIEW",
    2973            dialect=dialect,
    2974            copy=copy,
    2975            **opts,
    2976        )
    2977
    2978    def join(
    2979        self,
    2980        expression: ExpOrStr,
    2981        on: t.Optional[ExpOrStr] = None,
    2982        using: t.Optional[ExpOrStr | t.Collection[ExpOrStr]] = None,
    2983        append: bool = True,
    2984        join_type: t.Optional[str] = None,
    2985        join_alias: t.Optional[Identifier | str] = None,
    2986        dialect: DialectType = None,
    2987        copy: bool = True,
    2988        **opts,
    2989    ) -> Select:
    2990        """
    2991        Append to or set the JOIN expressions.
    2992
    2993        Example:
    2994            >>> Select().select("*").from_("tbl").join("tbl2", on="tbl1.y = tbl2.y").sql()
    2995            'SELECT * FROM tbl JOIN tbl2 ON tbl1.y = tbl2.y'
    2996
    2997            >>> Select().select("1").from_("a").join("b", using=["x", "y", "z"]).sql()
    2998            'SELECT 1 FROM a JOIN b USING (x, y, z)'
    2999
    3000            Use `join_type` to change the type of join:
    3001
    3002            >>> Select().select("*").from_("tbl").join("tbl2", on="tbl1.y = tbl2.y", join_type="left outer").sql()
    3003            'SELECT * FROM tbl LEFT OUTER JOIN tbl2 ON tbl1.y = tbl2.y'
    3004
    3005        Args:
    3006            expression: the SQL code string to parse.
    3007                If an `Expression` instance is passed, it will be used as-is.
    3008            on: optionally specify the join "on" criteria as a SQL string.
    3009                If an `Expression` instance is passed, it will be used as-is.
    3010            using: optionally specify the join "using" criteria as a SQL string.
    3011                If an `Expression` instance is passed, it will be used as-is.
    3012            append: if `True`, add to any existing expressions.
    3013                Otherwise, this resets the expressions.
    3014            join_type: if set, alter the parsed join type.
    3015            join_alias: an optional alias for the joined source.
    3016            dialect: the dialect used to parse the input expressions.
    3017            copy: if `False`, modify this expression instance in-place.
    3018            opts: other options to use to parse the input expressions.
    3019
    3020        Returns:
    3021            Select: the modified expression.
    3022        """
    3023        parse_args: t.Dict[str, t.Any] = {"dialect": dialect, **opts}
    3024
    3025        try:
    3026            expression = maybe_parse(expression, into=Join, prefix="JOIN", **parse_args)
    3027        except ParseError:
    3028            expression = maybe_parse(expression, into=(Join, Expression), **parse_args)
    3029
    3030        join = expression if isinstance(expression, Join) else Join(this=expression)
    3031
    3032        if isinstance(join.this, Select):
    3033            join.this.replace(join.this.subquery())
    3034
    3035        if join_type:
    3036            method: t.Optional[Token]
    3037            side: t.Optional[Token]
    3038            kind: t.Optional[Token]
    3039
    3040            method, side, kind = maybe_parse(join_type, into="JOIN_TYPE", **parse_args)  # type: ignore
    3041
    3042            if method:
    3043                join.set("method", method.text)
    3044            if side:
    3045                join.set("side", side.text)
    3046            if kind:
    3047                join.set("kind", kind.text)
    3048
    3049        if on:
    3050            on = and_(*ensure_list(on), dialect=dialect, copy=copy, **opts)
    3051            join.set("on", on)
    3052
    3053        if using:
    3054            join = _apply_list_builder(
    3055                *ensure_list(using),
    3056                instance=join,
    3057                arg="using",
    3058                append=append,
    3059                copy=copy,
    3060                into=Identifier,
    3061                **opts,
    3062            )
    3063
    3064        if join_alias:
    3065            join.set("this", alias_(join.this, join_alias, table=True))
    3066
    3067        return _apply_list_builder(
    3068            join,
    3069            instance=self,
    3070            arg="joins",
    3071            append=append,
    3072            copy=copy,
    3073            **opts,
    3074        )
    3075
    3076    def where(
    3077        self,
    3078        *expressions: t.Optional[ExpOrStr],
    3079        append: bool = True,
    3080        dialect: DialectType = None,
    3081        copy: bool = True,
    3082        **opts,
    3083    ) -> Select:
    3084        """
    3085        Append to or set the WHERE expressions.
    3086
    3087        Example:
    3088            >>> Select().select("x").from_("tbl").where("x = 'a' OR x < 'b'").sql()
    3089            "SELECT x FROM tbl WHERE x = 'a' OR x < 'b'"
    3090
    3091        Args:
    3092            *expressions: the SQL code strings to parse.
    3093                If an `Expression` instance is passed, it will be used as-is.
    3094                Multiple expressions are combined with an AND operator.
    3095            append: if `True`, AND the new expressions to any existing expression.
    3096                Otherwise, this resets the expression.
    3097            dialect: the dialect used to parse the input expressions.
    3098            copy: if `False`, modify this expression instance in-place.
    3099            opts: other options to use to parse the input expressions.
    3100
    3101        Returns:
    3102            Select: the modified expression.
    3103        """
    3104        return _apply_conjunction_builder(
    3105            *expressions,
    3106            instance=self,
    3107            arg="where",
    3108            append=append,
    3109            into=Where,
    3110            dialect=dialect,
    3111            copy=copy,
    3112            **opts,
    3113        )
    3114
    3115    def having(
    3116        self,
    3117        *expressions: t.Optional[ExpOrStr],
    3118        append: bool = True,
    3119        dialect: DialectType = None,
    3120        copy: bool = True,
    3121        **opts,
    3122    ) -> Select:
    3123        """
    3124        Append to or set the HAVING expressions.
    3125
    3126        Example:
    3127            >>> Select().select("x", "COUNT(y)").from_("tbl").group_by("x").having("COUNT(y) > 3").sql()
    3128            'SELECT x, COUNT(y) FROM tbl GROUP BY x HAVING COUNT(y) > 3'
    3129
    3130        Args:
    3131            *expressions: the SQL code strings to parse.
    3132                If an `Expression` instance is passed, it will be used as-is.
    3133                Multiple expressions are combined with an AND operator.
    3134            append: if `True`, AND the new expressions to any existing expression.
    3135                Otherwise, this resets the expression.
    3136            dialect: the dialect used to parse the input expressions.
    3137            copy: if `False`, modify this expression instance in-place.
    3138            opts: other options to use to parse the input expressions.
    3139
    3140        Returns:
    3141            The modified Select expression.
    3142        """
    3143        return _apply_conjunction_builder(
    3144            *expressions,
    3145            instance=self,
    3146            arg="having",
    3147            append=append,
    3148            into=Having,
    3149            dialect=dialect,
    3150            copy=copy,
    3151            **opts,
    3152        )
    3153
    3154    def window(
    3155        self,
    3156        *expressions: t.Optional[ExpOrStr],
    3157        append: bool = True,
    3158        dialect: DialectType = None,
    3159        copy: bool = True,
    3160        **opts,
    3161    ) -> Select:
    3162        return _apply_list_builder(
    3163            *expressions,
    3164            instance=self,
    3165            arg="windows",
    3166            append=append,
    3167            into=Window,
    3168            dialect=dialect,
    3169            copy=copy,
    3170            **opts,
    3171        )
    3172
    3173    def qualify(
    3174        self,
    3175        *expressions: t.Optional[ExpOrStr],
    3176        append: bool = True,
    3177        dialect: DialectType = None,
    3178        copy: bool = True,
    3179        **opts,
    3180    ) -> Select:
    3181        return _apply_conjunction_builder(
    3182            *expressions,
    3183            instance=self,
    3184            arg="qualify",
    3185            append=append,
    3186            into=Qualify,
    3187            dialect=dialect,
    3188            copy=copy,
    3189            **opts,
    3190        )
    3191
    3192    def distinct(
    3193        self, *ons: t.Optional[ExpOrStr], distinct: bool = True, copy: bool = True
    3194    ) -> Select:
    3195        """
    3196        Set the OFFSET expression.
    3197
    3198        Example:
    3199            >>> Select().from_("tbl").select("x").distinct().sql()
    3200            'SELECT DISTINCT x FROM tbl'
    3201
    3202        Args:
    3203            ons: the expressions to distinct on
    3204            distinct: whether the Select should be distinct
    3205            copy: if `False`, modify this expression instance in-place.
    3206
    3207        Returns:
    3208            Select: the modified expression.
    3209        """
    3210        instance = maybe_copy(self, copy)
    3211        on = Tuple(expressions=[maybe_parse(on, copy=copy) for on in ons if on]) if ons else None
    3212        instance.set("distinct", Distinct(on=on) if distinct else None)
    3213        return instance
    3214
    3215    def ctas(
    3216        self,
    3217        table: ExpOrStr,
    3218        properties: t.Optional[t.Dict] = None,
    3219        dialect: DialectType = None,
    3220        copy: bool = True,
    3221        **opts,
    3222    ) -> Create:
    3223        """
    3224        Convert this expression to a CREATE TABLE AS statement.
    3225
    3226        Example:
    3227            >>> Select().select("*").from_("tbl").ctas("x").sql()
    3228            'CREATE TABLE x AS SELECT * FROM tbl'
    3229
    3230        Args:
    3231            table: the SQL code string to parse as the table name.
    3232                If another `Expression` instance is passed, it will be used as-is.
    3233            properties: an optional mapping of table properties
    3234            dialect: the dialect used to parse the input table.
    3235            copy: if `False`, modify this expression instance in-place.
    3236            opts: other options to use to parse the input table.
    3237
    3238        Returns:
    3239            The new Create expression.
    3240        """
    3241        instance = maybe_copy(self, copy)
    3242        table_expression = maybe_parse(
    3243            table,
    3244            into=Table,
    3245            dialect=dialect,
    3246            **opts,
    3247        )
    3248        properties_expression = None
    3249        if properties:
    3250            properties_expression = Properties.from_dict(properties)
    3251
    3252        return Create(
    3253            this=table_expression,
    3254            kind="table",
    3255            expression=instance,
    3256            properties=properties_expression,
    3257        )
    3258
    3259    def lock(self, update: bool = True, copy: bool = True) -> Select:
    3260        """
    3261        Set the locking read mode for this expression.
    3262
    3263        Examples:
    3264            >>> Select().select("x").from_("tbl").where("x = 'a'").lock().sql("mysql")
    3265            "SELECT x FROM tbl WHERE x = 'a' FOR UPDATE"
    3266
    3267            >>> Select().select("x").from_("tbl").where("x = 'a'").lock(update=False).sql("mysql")
    3268            "SELECT x FROM tbl WHERE x = 'a' FOR SHARE"
    3269
    3270        Args:
    3271            update: if `True`, the locking type will be `FOR UPDATE`, else it will be `FOR SHARE`.
    3272            copy: if `False`, modify this expression instance in-place.
    3273
    3274        Returns:
    3275            The modified expression.
    3276        """
    3277        inst = maybe_copy(self, copy)
    3278        inst.set("locks", [Lock(update=update)])
    3279
    3280        return inst
    3281
    3282    def hint(self, *hints: ExpOrStr, dialect: DialectType = None, copy: bool = True) -> Select:
    3283        """
    3284        Set hints for this expression.
    3285
    3286        Examples:
    3287            >>> Select().select("x").from_("tbl").hint("BROADCAST(y)").sql(dialect="spark")
    3288            'SELECT /*+ BROADCAST(y) */ x FROM tbl'
    3289
    3290        Args:
    3291            hints: The SQL code strings to parse as the hints.
    3292                If an `Expression` instance is passed, it will be used as-is.
    3293            dialect: The dialect used to parse the hints.
    3294            copy: If `False`, modify this expression instance in-place.
    3295
    3296        Returns:
    3297            The modified expression.
    3298        """
    3299        inst = maybe_copy(self, copy)
    3300        inst.set(
    3301            "hint", Hint(expressions=[maybe_parse(h, copy=copy, dialect=dialect) for h in hints])
    3302        )
    3303
    3304        return inst
    3305
    3306    @property
    3307    def named_selects(self) -> t.List[str]:
    3308        return [e.output_name for e in self.expressions if e.alias_or_name]
    3309
    3310    @property
    3311    def is_star(self) -> bool:
    3312        return any(expression.is_star for expression in self.expressions)
    3313
    3314    @property
    3315    def selects(self) -> t.List[Expression]:
    3316        return self.expressions

arg_types = {'with': False, 'kind': False, 'expressions': False, 'hint': False, 'distinct': False, 'into': False, 'from': False, 'match': False, 'laterals': False, 'joins': False, 'connect': False, 'pivots': False, 'where': False, 'group': False, 'having': False, 'qualify': False, 'windows': False, 'distribute': False, 'sort': False, 'cluster': False, 'order': False, 'limit': False, 'offset': False, 'locks': False, 'sample': False, 'settings': False, 'format': False}
def from_( self, expression: Union[str, Expression], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2640    def from_(
    2641        self, expression: ExpOrStr, dialect: DialectType = None, copy: bool = True, **opts
    2642    ) -> Select:
    2643        """
    2644        Set the FROM expression.
    2645
    2646        Example:
    2647            >>> Select().from_("tbl").select("x").sql()
    2648            'SELECT x FROM tbl'
    2649
    2650        Args:
    2651            expression : the SQL code strings to parse.
    2652                If a `From` instance is passed, this is used as-is.
    2653                If another `Expression` instance is passed, it will be wrapped in a `From`.
    2654            dialect: the dialect used to parse the input expression.
    2655            copy: if `False`, modify this expression instance in-place.
    2656            opts: other options to use to parse the input expressions.
    2657
    2658        Returns:
    2659            The modified Select expression.
    2660        """
    2661        return _apply_builder(
    2662            expression=expression,
    2663            instance=self,
    2664            arg="from",
    2665            into=From,
    2666            prefix="FROM",
    2667            dialect=dialect,
    2668            copy=copy,
    2669            **opts,
    2670        )

Set the FROM expression.

###### Example:

>     >>> Select().from_("tbl").select("x").sql()
>     'SELECT x FROM tbl'

###### Arguments:

- expression : the SQL code strings to parse. If a `From` instance is passed, this is used as-is. If another `Expression` instance is passed, it will be wrapped in a `From`.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Select expression.

def group_by( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2672    def group_by(
    2673        self,
    2674        *expressions: t.Optional[ExpOrStr],
    2675        append: bool = True,
    2676        dialect: DialectType = None,
    2677        copy: bool = True,
    2678        **opts,
    2679    ) -> Select:
    2680        """
    2681        Set the GROUP BY expression.
    2682
    2683        Example:
    2684            >>> Select().from_("tbl").select("x", "COUNT(1)").group_by("x").sql()
    2685            'SELECT x, COUNT(1) FROM tbl GROUP BY x'
    2686
    2687        Args:
    2688            *expressions: the SQL code strings to parse.
    2689                If a `Group` instance is passed, this is used as-is.
    2690                If another `Expression` instance is passed, it will be wrapped in a `Group`.
    2691                If nothing is passed in then a group by is not applied to the expression
    2692            append: if `True`, add to any existing expressions.
    2693                Otherwise, this flattens all the `Group` expression into a single expression.
    2694            dialect: the dialect used to parse the input expression.
    2695            copy: if `False`, modify this expression instance in-place.
    2696            opts: other options to use to parse the input expressions.
    2697
    2698        Returns:
    2699            The modified Select expression.
    2700        """
    2701        if not expressions:
    2702            return self if not copy else self.copy()
    2703
    2704        return _apply_child_list_builder(
    2705            *expressions,
    2706            instance=self,
    2707            arg="group",
    2708            append=append,
    2709            copy=copy,
    2710            prefix="GROUP BY",
    2711            into=Group,
    2712            dialect=dialect,
    2713            **opts,
    2714        )

Set the GROUP BY expression.

###### Example:

>     >>> Select().from_("tbl").select("x", "COUNT(1)").group_by("x").sql()
>     'SELECT x, COUNT(1) FROM tbl GROUP BY x'

###### Arguments:

- *expressions: the SQL code strings to parse. If a `Group` instance is passed, this is used as-is. If another `Expression` instance is passed, it will be wrapped in a `Group`. If nothing is passed in then a group by is not applied to the expression
- append: if `True`, add to any existing expressions. Otherwise, this flattens all the `Group` expression into a single expression.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Select expression.

def order_by( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2716    def order_by(
    2717        self,
    2718        *expressions: t.Optional[ExpOrStr],
    2719        append: bool = True,
    2720        dialect: DialectType = None,
    2721        copy: bool = True,
    2722        **opts,
    2723    ) -> Select:
    2724        """
    2725        Set the ORDER BY expression.
    2726
    2727        Example:
    2728            >>> Select().from_("tbl").select("x").order_by("x DESC").sql()
    2729            'SELECT x FROM tbl ORDER BY x DESC'
    2730
    2731        Args:
    2732            *expressions: the SQL code strings to parse.
    2733                If a `Group` instance is passed, this is used as-is.
    2734                If another `Expression` instance is passed, it will be wrapped in a `Order`.
    2735            append: if `True`, add to any existing expressions.
    2736                Otherwise, this flattens all the `Order` expression into a single expression.
    2737            dialect: the dialect used to parse the input expression.
    2738            copy: if `False`, modify this expression instance in-place.
    2739            opts: other options to use to parse the input expressions.
    2740
    2741        Returns:
    2742            The modified Select expression.
    2743        """
    2744        return _apply_child_list_builder(
    2745            *expressions,
    2746            instance=self,
    2747            arg="order",
    2748            append=append,
    2749            copy=copy,
    2750            prefix="ORDER BY",
    2751            into=Order,
    2752            dialect=dialect,
    2753            **opts,
    2754        )

Set the ORDER BY expression.

###### Example:

>     >>> Select().from_("tbl").select("x").order_by("x DESC").sql()
>     'SELECT x FROM tbl ORDER BY x DESC'

###### Arguments:

- *expressions: the SQL code strings to parse. If a `Group` instance is passed, this is used as-is. If another `Expression` instance is passed, it will be wrapped in a `Order`.
- append: if `True`, add to any existing expressions. Otherwise, this flattens all the `Order` expression into a single expression.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Select expression.

def sort_by( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2756    def sort_by(
    2757        self,
    2758        *expressions: t.Optional[ExpOrStr],
    2759        append: bool = True,
    2760        dialect: DialectType = None,
    2761        copy: bool = True,
    2762        **opts,
    2763    ) -> Select:
    2764        """
    2765        Set the SORT BY expression.
    2766
    2767        Example:
    2768            >>> Select().from_("tbl").select("x").sort_by("x DESC").sql(dialect="hive")
    2769            'SELECT x FROM tbl SORT BY x DESC'
    2770
    2771        Args:
    2772            *expressions: the SQL code strings to parse.
    2773                If a `Group` instance is passed, this is used as-is.
    2774                If another `Expression` instance is passed, it will be wrapped in a `SORT`.
    2775            append: if `True`, add to any existing expressions.
    2776                Otherwise, this flattens all the `Order` expression into a single expression.
    2777            dialect: the dialect used to parse the input expression.
    2778            copy: if `False`, modify this expression instance in-place.
    2779            opts: other options to use to parse the input expressions.
    2780
    2781        Returns:
    2782            The modified Select expression.
    2783        """
    2784        return _apply_child_list_builder(
    2785            *expressions,
    2786            instance=self,
    2787            arg="sort",
    2788            append=append,
    2789            copy=copy,
    2790            prefix="SORT BY",
    2791            into=Sort,
    2792            dialect=dialect,
    2793            **opts,
    2794        )

Set the SORT BY expression.

###### Example:

>     >>> Select().from_("tbl").select("x").sort_by("x DESC").sql(dialect="hive")
>     'SELECT x FROM tbl SORT BY x DESC'

###### Arguments:

- *expressions: the SQL code strings to parse. If a `Group` instance is passed, this is used as-is. If another `Expression` instance is passed, it will be wrapped in a `SORT`.
- append: if `True`, add to any existing expressions. Otherwise, this flattens all the `Order` expression into a single expression.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Select expression.

def cluster_by( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2796    def cluster_by(
    2797        self,
    2798        *expressions: t.Optional[ExpOrStr],
    2799        append: bool = True,
    2800        dialect: DialectType = None,
    2801        copy: bool = True,
    2802        **opts,
    2803    ) -> Select:
    2804        """
    2805        Set the CLUSTER BY expression.
    2806
    2807        Example:
    2808            >>> Select().from_("tbl").select("x").cluster_by("x DESC").sql(dialect="hive")
    2809            'SELECT x FROM tbl CLUSTER BY x DESC'
    2810
    2811        Args:
    2812            *expressions: the SQL code strings to parse.
    2813                If a `Group` instance is passed, this is used as-is.
    2814                If another `Expression` instance is passed, it will be wrapped in a `Cluster`.
    2815            append: if `True`, add to any existing expressions.
    2816                Otherwise, this flattens all the `Order` expression into a single expression.
    2817            dialect: the dialect used to parse the input expression.
    2818            copy: if `False`, modify this expression instance in-place.
    2819            opts: other options to use to parse the input expressions.
    2820
    2821        Returns:
    2822            The modified Select expression.
    2823        """
    2824        return _apply_child_list_builder(
    2825            *expressions,
    2826            instance=self,
    2827            arg="cluster",
    2828            append=append,
    2829            copy=copy,
    2830            prefix="CLUSTER BY",
    2831            into=Cluster,
    2832            dialect=dialect,
    2833            **opts,
    2834        )

Set the CLUSTER BY expression.

###### Example:

>     >>> Select().from_("tbl").select("x").cluster_by("x DESC").sql(dialect="hive")
>     'SELECT x FROM tbl CLUSTER BY x DESC'

###### Arguments:

- *expressions: the SQL code strings to parse. If a `Group` instance is passed, this is used as-is. If another `Expression` instance is passed, it will be wrapped in a `Cluster`.
- append: if `True`, add to any existing expressions. Otherwise, this flattens all the `Order` expression into a single expression.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Select expression.

def limit( self, expression: Union[str, Expression, int], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2836    def limit(
    2837        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2838    ) -> Select:
    2839        """
    2840        Set the LIMIT expression.
    2841
    2842        Example:
    2843            >>> Select().from_("tbl").select("x").limit(10).sql()
    2844            'SELECT x FROM tbl LIMIT 10'
    2845
    2846        Args:
    2847            expression: the SQL code string to parse.
    2848                This can also be an integer.
    2849                If a `Limit` instance is passed, this is used as-is.
    2850                If another `Expression` instance is passed, it will be wrapped in a `Limit`.
    2851            dialect: the dialect used to parse the input expression.
    2852            copy: if `False`, modify this expression instance in-place.
    2853            opts: other options to use to parse the input expressions.
    2854
    2855        Returns:
    2856            Select: the modified expression.
    2857        """
    2858        return _apply_builder(
    2859            expression=expression,
    2860            instance=self,
    2861            arg="limit",
    2862            into=Limit,
    2863            prefix="LIMIT",
    2864            dialect=dialect,
    2865            copy=copy,
    2866            **opts,
    2867        )

Set the LIMIT expression.

###### Example:

>     >>> Select().from_("tbl").select("x").limit(10).sql()
>     'SELECT x FROM tbl LIMIT 10'

###### Arguments:

- expression: the SQL code string to parse. This can also be an integer. If a `Limit` instance is passed, this is used as-is. If another `Expression` instance is passed, it will be wrapped in a `Limit`.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> Select: the modified expression.

def offset( self, expression: Union[str, Expression, int], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2869    def offset(
    2870        self, expression: ExpOrStr | int, dialect: DialectType = None, copy: bool = True, **opts
    2871    ) -> Select:
    2872        """
    2873        Set the OFFSET expression.
    2874
    2875        Example:
    2876            >>> Select().from_("tbl").select("x").offset(10).sql()
    2877            'SELECT x FROM tbl OFFSET 10'
    2878
    2879        Args:
    2880            expression: the SQL code string to parse.
    2881                This can also be an integer.
    2882                If a `Offset` instance is passed, this is used as-is.
    2883                If another `Expression` instance is passed, it will be wrapped in a `Offset`.
    2884            dialect: the dialect used to parse the input expression.
    2885            copy: if `False`, modify this expression instance in-place.
    2886            opts: other options to use to parse the input expressions.
    2887
    2888        Returns:
    2889            The modified Select expression.
    2890        """
    2891        return _apply_builder(
    2892            expression=expression,
    2893            instance=self,
    2894            arg="offset",
    2895            into=Offset,
    2896            prefix="OFFSET",
    2897            dialect=dialect,
    2898            copy=copy,
    2899            **opts,
    2900        )

Set the OFFSET expression.

###### Example:

>     >>> Select().from_("tbl").select("x").offset(10).sql()
>     'SELECT x FROM tbl OFFSET 10'

###### Arguments:

- expression: the SQL code string to parse. This can also be an integer. If a `Offset` instance is passed, this is used as-is. If another `Expression` instance is passed, it will be wrapped in a `Offset`.
- dialect: the dialect used to parse the input expression.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Select expression.

def select( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2902    def select(
    2903        self,
    2904        *expressions: t.Optional[ExpOrStr],
    2905        append: bool = True,
    2906        dialect: DialectType = None,
    2907        copy: bool = True,
    2908        **opts,
    2909    ) -> Select:
    2910        """
    2911        Append to or set the SELECT expressions.
    2912
    2913        Example:
    2914            >>> Select().select("x", "y").sql()
    2915            'SELECT x, y'
    2916
    2917        Args:
    2918            *expressions: the SQL code strings to parse.
    2919                If an `Expression` instance is passed, it will be used as-is.
    2920            append: if `True`, add to any existing expressions.
    2921                Otherwise, this resets the expressions.
    2922            dialect: the dialect used to parse the input expressions.
    2923            copy: if `False`, modify this expression instance in-place.
    2924            opts: other options to use to parse the input expressions.
    2925
    2926        Returns:
    2927            The modified Select expression.
    2928        """
    2929        return _apply_list_builder(
    2930            *expressions,
    2931            instance=self,
    2932            arg="expressions",
    2933            append=append,
    2934            dialect=dialect,
    2935            copy=copy,
    2936            **opts,
    2937        )

Append to or set the SELECT expressions.

###### Example:

>     >>> Select().select("x", "y").sql()
>     'SELECT x, y'

###### Arguments:

- *expressions: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is.
- append: if `True`, add to any existing expressions. Otherwise, this resets the expressions.
- dialect: the dialect used to parse the input expressions.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Select expression.

def lateral( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2939    def lateral(
    2940        self,
    2941        *expressions: t.Optional[ExpOrStr],
    2942        append: bool = True,
    2943        dialect: DialectType = None,
    2944        copy: bool = True,
    2945        **opts,
    2946    ) -> Select:
    2947        """
    2948        Append to or set the LATERAL expressions.
    2949
    2950        Example:
    2951            >>> Select().select("x").lateral("OUTER explode(y) tbl2 AS z").from_("tbl").sql()
    2952            'SELECT x FROM tbl LATERAL VIEW OUTER EXPLODE(y) tbl2 AS z'
    2953
    2954        Args:
    2955            *expressions: the SQL code strings to parse.
    2956                If an `Expression` instance is passed, it will be used as-is.
    2957            append: if `True`, add to any existing expressions.
    2958                Otherwise, this resets the expressions.
    2959            dialect: the dialect used to parse the input expressions.
    2960            copy: if `False`, modify this expression instance in-place.
    2961            opts: other options to use to parse the input expressions.
    2962
    2963        Returns:
    2964            The modified Select expression.
    2965        """
    2966        return _apply_list_builder(
    2967            *expressions,
    2968            instance=self,
    2969            arg="laterals",
    2970            append=append,
    2971            into=Lateral,
    2972            prefix="LATERAL VIEW",
    2973            dialect=dialect,
    2974            copy=copy,
    2975            **opts,
    2976        )

Append to or set the LATERAL expressions.

###### Example:

>     >>> Select().select("x").lateral("OUTER explode(y) tbl2 AS z").from_("tbl").sql()
>     'SELECT x FROM tbl LATERAL VIEW OUTER EXPLODE(y) tbl2 AS z'

###### Arguments:

- *expressions: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is.
- append: if `True`, add to any existing expressions. Otherwise, this resets the expressions.
- dialect: the dialect used to parse the input expressions.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Select expression.

def join( self, expression: Union[str, Expression], on: Union[str, Expression, NoneType] = None, using: Union[str, Expression, Collection[Union[str, Expression]], NoneType] = None, append: bool = True, join_type: Optional[str] = None, join_alias: Union[Identifier, str, NoneType] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    2978    def join(
    2979        self,
    2980        expression: ExpOrStr,
    2981        on: t.Optional[ExpOrStr] = None,
    2982        using: t.Optional[ExpOrStr | t.Collection[ExpOrStr]] = None,
    2983        append: bool = True,
    2984        join_type: t.Optional[str] = None,
    2985        join_alias: t.Optional[Identifier | str] = None,
    2986        dialect: DialectType = None,
    2987        copy: bool = True,
    2988        **opts,
    2989    ) -> Select:
    2990        """
    2991        Append to or set the JOIN expressions.
    2992
    2993        Example:
    2994            >>> Select().select("*").from_("tbl").join("tbl2", on="tbl1.y = tbl2.y").sql()
    2995            'SELECT * FROM tbl JOIN tbl2 ON tbl1.y = tbl2.y'
    2996
    2997            >>> Select().select("1").from_("a").join("b", using=["x", "y", "z"]).sql()
    2998            'SELECT 1 FROM a JOIN b USING (x, y, z)'
    2999
    3000            Use `join_type` to change the type of join:
    3001
    3002            >>> Select().select("*").from_("tbl").join("tbl2", on="tbl1.y = tbl2.y", join_type="left outer").sql()
    3003            'SELECT * FROM tbl LEFT OUTER JOIN tbl2 ON tbl1.y = tbl2.y'
    3004
    3005        Args:
    3006            expression: the SQL code string to parse.
    3007                If an `Expression` instance is passed, it will be used as-is.
    3008            on: optionally specify the join "on" criteria as a SQL string.
    3009                If an `Expression` instance is passed, it will be used as-is.
    3010            using: optionally specify the join "using" criteria as a SQL string.
    3011                If an `Expression` instance is passed, it will be used as-is.
    3012            append: if `True`, add to any existing expressions.
    3013                Otherwise, this resets the expressions.
    3014            join_type: if set, alter the parsed join type.
    3015            join_alias: an optional alias for the joined source.
    3016            dialect: the dialect used to parse the input expressions.
    3017            copy: if `False`, modify this expression instance in-place.
    3018            opts: other options to use to parse the input expressions.
    3019
    3020        Returns:
    3021            Select: the modified expression.
    3022        """
    3023        parse_args: t.Dict[str, t.Any] = {"dialect": dialect, **opts}
    3024
    3025        try:
    3026            expression = maybe_parse(expression, into=Join, prefix="JOIN", **parse_args)
    3027        except ParseError:
    3028            expression = maybe_parse(expression, into=(Join, Expression), **parse_args)
    3029
    3030        join = expression if isinstance(expression, Join) else Join(this=expression)
    3031
    3032        if isinstance(join.this, Select):
    3033            join.this.replace(join.this.subquery())
    3034
    3035        if join_type:
    3036            method: t.Optional[Token]
    3037            side: t.Optional[Token]
    3038            kind: t.Optional[Token]
    3039
    3040            method, side, kind = maybe_parse(join_type, into="JOIN_TYPE", **parse_args)  # type: ignore
    3041
    3042            if method:
    3043                join.set("method", method.text)
    3044            if side:
    3045                join.set("side", side.text)
    3046            if kind:
    3047                join.set("kind", kind.text)
    3048
    3049        if on:
    3050            on = and_(*ensure_list(on), dialect=dialect, copy=copy, **opts)
    3051            join.set("on", on)
    3052
    3053        if using:
    3054            join = _apply_list_builder(
    3055                *ensure_list(using),
    3056                instance=join,
    3057                arg="using",
    3058                append=append,
    3059                copy=copy,
    3060                into=Identifier,
    3061                **opts,
    3062            )
    3063
    3064        if join_alias:
    3065            join.set("this", alias_(join.this, join_alias, table=True))
    3066
    3067        return _apply_list_builder(
    3068            join,
    3069            instance=self,
    3070            arg="joins",
    3071            append=append,
    3072            copy=copy,
    3073            **opts,
    3074        )

Append to or set the JOIN expressions.

###### Example:

>     >>> Select().select("*").from_("tbl").join("tbl2", on="tbl1.y = tbl2.y").sql()
>     'SELECT * FROM tbl JOIN tbl2 ON tbl1.y = tbl2.y'

>     >>> Select().select("1").from_("a").join("b", using=["x", "y", "z"]).sql()
>     'SELECT 1 FROM a JOIN b USING (x, y, z)'

> Use `join_type` to change the type of join:

>     >>> Select().select("*").from_("tbl").join("tbl2", on="tbl1.y = tbl2.y", join_type="left outer").sql()
>     'SELECT * FROM tbl LEFT OUTER JOIN tbl2 ON tbl1.y = tbl2.y'

###### Arguments:

- expression: the SQL code string to parse. If an `Expression` instance is passed, it will be used as-is.
- on: optionally specify the join "on" criteria as a SQL string. If an `Expression` instance is passed, it will be used as-is.
- using: optionally specify the join "using" criteria as a SQL string. If an `Expression` instance is passed, it will be used as-is.
- append: if `True`, add to any existing expressions. Otherwise, this resets the expressions.
- join_type: if set, alter the parsed join type.
- join_alias: an optional alias for the joined source.
- dialect: the dialect used to parse the input expressions.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> Select: the modified expression.

def where( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    3076    def where(
    3077        self,
    3078        *expressions: t.Optional[ExpOrStr],
    3079        append: bool = True,
    3080        dialect: DialectType = None,
    3081        copy: bool = True,
    3082        **opts,
    3083    ) -> Select:
    3084        """
    3085        Append to or set the WHERE expressions.
    3086
    3087        Example:
    3088            >>> Select().select("x").from_("tbl").where("x = 'a' OR x < 'b'").sql()
    3089            "SELECT x FROM tbl WHERE x = 'a' OR x < 'b'"
    3090
    3091        Args:
    3092            *expressions: the SQL code strings to parse.
    3093                If an `Expression` instance is passed, it will be used as-is.
    3094                Multiple expressions are combined with an AND operator.
    3095            append: if `True`, AND the new expressions to any existing expression.
    3096                Otherwise, this resets the expression.
    3097            dialect: the dialect used to parse the input expressions.
    3098            copy: if `False`, modify this expression instance in-place.
    3099            opts: other options to use to parse the input expressions.
    3100
    3101        Returns:
    3102            Select: the modified expression.
    3103        """
    3104        return _apply_conjunction_builder(
    3105            *expressions,
    3106            instance=self,
    3107            arg="where",
    3108            append=append,
    3109            into=Where,
    3110            dialect=dialect,
    3111            copy=copy,
    3112            **opts,
    3113        )

Append to or set the WHERE expressions.

###### Example:

>     >>> Select().select("x").from_("tbl").where("x = 'a' OR x < 'b'").sql()
>     "SELECT x FROM tbl WHERE x = 'a' OR x < 'b'"

###### Arguments:

- *expressions: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is. Multiple expressions are combined with an AND operator.
- append: if `True`, AND the new expressions to any existing expression. Otherwise, this resets the expression.
- dialect: the dialect used to parse the input expressions.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> Select: the modified expression.

def having( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    3115    def having(
    3116        self,
    3117        *expressions: t.Optional[ExpOrStr],
    3118        append: bool = True,
    3119        dialect: DialectType = None,
    3120        copy: bool = True,
    3121        **opts,
    3122    ) -> Select:
    3123        """
    3124        Append to or set the HAVING expressions.
    3125
    3126        Example:
    3127            >>> Select().select("x", "COUNT(y)").from_("tbl").group_by("x").having("COUNT(y) > 3").sql()
    3128            'SELECT x, COUNT(y) FROM tbl GROUP BY x HAVING COUNT(y) > 3'
    3129
    3130        Args:
    3131            *expressions: the SQL code strings to parse.
    3132                If an `Expression` instance is passed, it will be used as-is.
    3133                Multiple expressions are combined with an AND operator.
    3134            append: if `True`, AND the new expressions to any existing expression.
    3135                Otherwise, this resets the expression.
    3136            dialect: the dialect used to parse the input expressions.
    3137            copy: if `False`, modify this expression instance in-place.
    3138            opts: other options to use to parse the input expressions.
    3139
    3140        Returns:
    3141            The modified Select expression.
    3142        """
    3143        return _apply_conjunction_builder(
    3144            *expressions,
    3145            instance=self,
    3146            arg="having",
    3147            append=append,
    3148            into=Having,
    3149            dialect=dialect,
    3150            copy=copy,
    3151            **opts,
    3152        )

Append to or set the HAVING expressions.

###### Example:

>     >>> Select().select("x", "COUNT(y)").from_("tbl").group_by("x").having("COUNT(y) > 3").sql()
>     'SELECT x, COUNT(y) FROM tbl GROUP BY x HAVING COUNT(y) > 3'

###### Arguments:

- *expressions: the SQL code strings to parse. If an `Expression` instance is passed, it will be used as-is. Multiple expressions are combined with an AND operator.
- append: if `True`, AND the new expressions to any existing expression. Otherwise, this resets the expression.
- dialect: the dialect used to parse the input expressions.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input expressions.

###### Returns:

> The modified Select expression.

def window( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    3154    def window(
    3155        self,
    3156        *expressions: t.Optional[ExpOrStr],
    3157        append: bool = True,
    3158        dialect: DialectType = None,
    3159        copy: bool = True,
    3160        **opts,
    3161    ) -> Select:
    3162        return _apply_list_builder(
    3163            *expressions,
    3164            instance=self,
    3165            arg="windows",
    3166            append=append,
    3167            into=Window,
    3168            dialect=dialect,
    3169            copy=copy,
    3170            **opts,
    3171        )

def qualify( self, *expressions: Union[str, Expression, NoneType], append: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Select: View Source

    3173    def qualify(
    3174        self,
    3175        *expressions: t.Optional[ExpOrStr],
    3176        append: bool = True,
    3177        dialect: DialectType = None,
    3178        copy: bool = True,
    3179        **opts,
    3180    ) -> Select:
    3181        return _apply_conjunction_builder(
    3182            *expressions,
    3183            instance=self,
    3184            arg="qualify",
    3185            append=append,
    3186            into=Qualify,
    3187            dialect=dialect,
    3188            copy=copy,
    3189            **opts,
    3190        )

def distinct( self, *ons: Union[str, Expression, NoneType], distinct: bool = True, copy: bool = True) -> Select: View Source

    3192    def distinct(
    3193        self, *ons: t.Optional[ExpOrStr], distinct: bool = True, copy: bool = True
    3194    ) -> Select:
    3195        """
    3196        Set the OFFSET expression.
    3197
    3198        Example:
    3199            >>> Select().from_("tbl").select("x").distinct().sql()
    3200            'SELECT DISTINCT x FROM tbl'
    3201
    3202        Args:
    3203            ons: the expressions to distinct on
    3204            distinct: whether the Select should be distinct
    3205            copy: if `False`, modify this expression instance in-place.
    3206
    3207        Returns:
    3208            Select: the modified expression.
    3209        """
    3210        instance = maybe_copy(self, copy)
    3211        on = Tuple(expressions=[maybe_parse(on, copy=copy) for on in ons if on]) if ons else None
    3212        instance.set("distinct", Distinct(on=on) if distinct else None)
    3213        return instance

Set the OFFSET expression.

###### Example:

>     >>> Select().from_("tbl").select("x").distinct().sql()
>     'SELECT DISTINCT x FROM tbl'

###### Arguments:

- ons: the expressions to distinct on
- distinct: whether the Select should be distinct
- copy: if `False`, modify this expression instance in-place.

###### Returns:

> Select: the modified expression.

def ctas( self, table: Union[str, Expression], properties: Optional[Dict] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Create: View Source

    3215    def ctas(
    3216        self,
    3217        table: ExpOrStr,
    3218        properties: t.Optional[t.Dict] = None,
    3219        dialect: DialectType = None,
    3220        copy: bool = True,
    3221        **opts,
    3222    ) -> Create:
    3223        """
    3224        Convert this expression to a CREATE TABLE AS statement.
    3225
    3226        Example:
    3227            >>> Select().select("*").from_("tbl").ctas("x").sql()
    3228            'CREATE TABLE x AS SELECT * FROM tbl'
    3229
    3230        Args:
    3231            table: the SQL code string to parse as the table name.
    3232                If another `Expression` instance is passed, it will be used as-is.
    3233            properties: an optional mapping of table properties
    3234            dialect: the dialect used to parse the input table.
    3235            copy: if `False`, modify this expression instance in-place.
    3236            opts: other options to use to parse the input table.
    3237
    3238        Returns:
    3239            The new Create expression.
    3240        """
    3241        instance = maybe_copy(self, copy)
    3242        table_expression = maybe_parse(
    3243            table,
    3244            into=Table,
    3245            dialect=dialect,
    3246            **opts,
    3247        )
    3248        properties_expression = None
    3249        if properties:
    3250            properties_expression = Properties.from_dict(properties)
    3251
    3252        return Create(
    3253            this=table_expression,
    3254            kind="table",
    3255            expression=instance,
    3256            properties=properties_expression,
    3257        )

Convert this expression to a CREATE TABLE AS statement.

###### Example:

>     >>> Select().select("*").from_("tbl").ctas("x").sql()
>     'CREATE TABLE x AS SELECT * FROM tbl'

###### Arguments:

- table: the SQL code string to parse as the table name. If another `Expression` instance is passed, it will be used as-is.
- properties: an optional mapping of table properties
- dialect: the dialect used to parse the input table.
- copy: if `False`, modify this expression instance in-place.
- opts: other options to use to parse the input table.

###### Returns:

> The new Create expression.

def lock( self, update: bool = True, copy: bool = True) -> Select: View Source

    3259    def lock(self, update: bool = True, copy: bool = True) -> Select:
    3260        """
    3261        Set the locking read mode for this expression.
    3262
    3263        Examples:
    3264            >>> Select().select("x").from_("tbl").where("x = 'a'").lock().sql("mysql")
    3265            "SELECT x FROM tbl WHERE x = 'a' FOR UPDATE"
    3266
    3267            >>> Select().select("x").from_("tbl").where("x = 'a'").lock(update=False).sql("mysql")
    3268            "SELECT x FROM tbl WHERE x = 'a' FOR SHARE"
    3269
    3270        Args:
    3271            update: if `True`, the locking type will be `FOR UPDATE`, else it will be `FOR SHARE`.
    3272            copy: if `False`, modify this expression instance in-place.
    3273
    3274        Returns:
    3275            The modified expression.
    3276        """
    3277        inst = maybe_copy(self, copy)
    3278        inst.set("locks", [Lock(update=update)])
    3279
    3280        return inst

Set the locking read mode for this expression.

###### Examples:

>     >>> Select().select("x").from_("tbl").where("x = 'a'").lock().sql("mysql")
>     "SELECT x FROM tbl WHERE x = 'a' FOR UPDATE"

>     >>> Select().select("x").from_("tbl").where("x = 'a'").lock(update=False).sql("mysql")
>     "SELECT x FROM tbl WHERE x = 'a' FOR SHARE"

###### Arguments:

- update: if `True`, the locking type will be `FOR UPDATE`, else it will be `FOR SHARE`.
- copy: if `False`, modify this expression instance in-place.

###### Returns:

> The modified expression.

def hint( self, *hints: Union[str, Expression], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True) -> Select: View Source

    3282    def hint(self, *hints: ExpOrStr, dialect: DialectType = None, copy: bool = True) -> Select:
    3283        """
    3284        Set hints for this expression.
    3285
    3286        Examples:
    3287            >>> Select().select("x").from_("tbl").hint("BROADCAST(y)").sql(dialect="spark")
    3288            'SELECT /*+ BROADCAST(y) */ x FROM tbl'
    3289
    3290        Args:
    3291            hints: The SQL code strings to parse as the hints.
    3292                If an `Expression` instance is passed, it will be used as-is.
    3293            dialect: The dialect used to parse the hints.
    3294            copy: If `False`, modify this expression instance in-place.
    3295
    3296        Returns:
    3297            The modified expression.
    3298        """
    3299        inst = maybe_copy(self, copy)
    3300        inst.set(
    3301            "hint", Hint(expressions=[maybe_parse(h, copy=copy, dialect=dialect) for h in hints])
    3302        )
    3303
    3304        return inst

Set hints for this expression.

###### Examples:

>     >>> Select().select("x").from_("tbl").hint("BROADCAST(y)").sql(dialect="spark")
>     'SELECT /*+ BROADCAST(y) */ x FROM tbl'

###### Arguments:

- hints: The SQL code strings to parse as the hints. If an `Expression` instance is passed, it will be used as-is.
- dialect: The dialect used to parse the hints.
- copy: If `False`, modify this expression instance in-place.

###### Returns:

> The modified expression.

named_selects: List[str]
is_star: bool

Checks whether an expression is a star.

selects: List[Expression]
key = 'select'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Subqueryable
  subquery
  ctes
  with_
Unionable
  union
  intersect
  except_

class Subquery(DerivedTable, Unionable): View Source

    3319class Subquery(DerivedTable, Unionable):
    3320    arg_types = {
    3321        "this": True,
    3322        "alias": False,
    3323        "with": False,
    3324        **QUERY_MODIFIERS,
    3325    }
    3326
    3327    def unnest(self):
    3328        """
    3329        Returns the first non subquery.
    3330        """
    3331        expression = self
    3332        while isinstance(expression, Subquery):
    3333            expression = expression.this
    3334        return expression
    3335
    3336    def unwrap(self) -> Subquery:
    3337        expression = self
    3338        while expression.same_parent and expression.is_wrapper:
    3339            expression = t.cast(Subquery, expression.parent)
    3340        return expression
    3341
    3342    @property
    3343    def is_wrapper(self) -> bool:
    3344        """
    3345        Whether this Subquery acts as a simple wrapper around another expression.
    3346
    3347        SELECT * FROM (((SELECT * FROM t)))
    3348                      ^
    3349                      This corresponds to a "wrapper" Subquery node
    3350        """
    3351        return all(v is None for k, v in self.args.items() if k != "this")
    3352
    3353    @property
    3354    def is_star(self) -> bool:
    3355        return self.this.is_star
    3356
    3357    @property
    3358    def output_name(self) -> str:
    3359        return self.alias

arg_types = {'this': True, 'alias': False, 'with': False, 'match': False, 'laterals': False, 'joins': False, 'connect': False, 'pivots': False, 'where': False, 'group': False, 'having': False, 'qualify': False, 'windows': False, 'distribute': False, 'sort': False, 'cluster': False, 'order': False, 'limit': False, 'offset': False, 'locks': False, 'sample': False, 'settings': False, 'format': False}
def unnest(self): View Source

    3327    def unnest(self):
    3328        """
    3329        Returns the first non subquery.
    3330        """
    3331        expression = self
    3332        while isinstance(expression, Subquery):
    3333            expression = expression.this
    3334        return expression

Returns the first non subquery.

def unwrap(self) -> Subquery: View Source

    3336    def unwrap(self) -> Subquery:
    3337        expression = self
    3338        while expression.same_parent and expression.is_wrapper:
    3339            expression = t.cast(Subquery, expression.parent)
    3340        return expression

is_wrapper: bool

Whether this Subquery acts as a simple wrapper around another expression.

SELECT * FROM (((SELECT * FROM t))) ^ This corresponds to a "wrapper" Subquery node

is_star: bool

Checks whether an expression is a star.

output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

key = 'subquery'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  alias
  alias_column_names
  name
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
DerivedTable
  selects
  named_selects
Unionable
  union
  intersect
  except_

class TableSample(Expression): View Source

    3362class TableSample(Expression):
    3363    arg_types = {
    3364        "this": False,
    3365        "expressions": False,
    3366        "method": False,
    3367        "bucket_numerator": False,
    3368        "bucket_denominator": False,
    3369        "bucket_field": False,
    3370        "percent": False,
    3371        "rows": False,
    3372        "size": False,
    3373        "seed": False,
    3374        "kind": False,
    3375    }

arg_types = {'this': False, 'expressions': False, 'method': False, 'bucket_numerator': False, 'bucket_denominator': False, 'bucket_field': False, 'percent': False, 'rows': False, 'size': False, 'seed': False, 'kind': False}
key = 'tablesample'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Tag(Expression): View Source

    3378class Tag(Expression):
    3379    """Tags are used for generating arbitrary sql like SELECT <span>x</span>."""
    3380
    3381    arg_types = {
    3382        "this": False,
    3383        "prefix": False,
    3384        "postfix": False,
    3385    }

Tags are used for generating arbitrary sql like SELECT x.

arg_types = {'this': False, 'prefix': False, 'postfix': False}
key = 'tag'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Pivot(Expression): View Source

    3390class Pivot(Expression):
    3391    arg_types = {
    3392        "this": False,
    3393        "alias": False,
    3394        "expressions": True,
    3395        "field": False,
    3396        "unpivot": False,
    3397        "using": False,
    3398        "group": False,
    3399        "columns": False,
    3400        "include_nulls": False,
    3401    }

arg_types = {'this': False, 'alias': False, 'expressions': True, 'field': False, 'unpivot': False, 'using': False, 'group': False, 'columns': False, 'include_nulls': False}
key = 'pivot'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Window(Condition): View Source

    3404class Window(Condition):
    3405    arg_types = {
    3406        "this": True,
    3407        "partition_by": False,
    3408        "order": False,
    3409        "spec": False,
    3410        "alias": False,
    3411        "over": False,
    3412        "first": False,
    3413    }

arg_types = {'this': True, 'partition_by': False, 'order': False, 'spec': False, 'alias': False, 'over': False, 'first': False}
key = 'window'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class WindowSpec(Expression): View Source

    3416class WindowSpec(Expression):
    3417    arg_types = {
    3418        "kind": False,
    3419        "start": False,
    3420        "start_side": False,
    3421        "end": False,
    3422        "end_side": False,
    3423    }

arg_types = {'kind': False, 'start': False, 'start_side': False, 'end': False, 'end_side': False}
key = 'windowspec'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Where(Expression): View Source

    3426class Where(Expression):
    3427    pass

key = 'where'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Star(Expression): View Source

    3430class Star(Expression):
    3431    arg_types = {"except": False, "replace": False}
    3432
    3433    @property
    3434    def name(self) -> str:
    3435        return "*"
    3436
    3437    @property
    3438    def output_name(self) -> str:
    3439        return self.name

arg_types = {'except': False, 'replace': False}
name: str
output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

key = 'star'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Parameter(Condition): View Source

    3442class Parameter(Condition):
    3443    arg_types = {"this": True, "wrapped": False}

arg_types = {'this': True, 'wrapped': False}
key = 'parameter'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class SessionParameter(Condition): View Source

    3446class SessionParameter(Condition):
    3447    arg_types = {"this": True, "kind": False}

arg_types = {'this': True, 'kind': False}
key = 'sessionparameter'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Placeholder(Condition): View Source

    3450class Placeholder(Condition):
    3451    arg_types = {"this": False, "kind": False}

arg_types = {'this': False, 'kind': False}
key = 'placeholder'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Null(Condition): View Source

    3454class Null(Condition):
    3455    arg_types: t.Dict[str, t.Any] = {}
    3456
    3457    @property
    3458    def name(self) -> str:
    3459        return "NULL"

arg_types: Dict[str, Any] = {}
name: str
key = 'null'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Boolean(Condition): View Source

    3462class Boolean(Condition):
    3463    pass

key = 'boolean'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DataTypeParam(Expression): View Source

    3466class DataTypeParam(Expression):
    3467    arg_types = {"this": True, "expression": False}

arg_types = {'this': True, 'expression': False}
key = 'datatypeparam'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DataType(Expression): View Source

    3470class DataType(Expression):
    3471    arg_types = {
    3472        "this": True,
    3473        "expressions": False,
    3474        "nested": False,
    3475        "values": False,
    3476        "prefix": False,
    3477        "kind": False,
    3478    }
    3479
    3480    class Type(AutoName):
    3481        ARRAY = auto()
    3482        BIGDECIMAL = auto()
    3483        BIGINT = auto()
    3484        BIGSERIAL = auto()
    3485        BINARY = auto()
    3486        BIT = auto()
    3487        BOOLEAN = auto()
    3488        CHAR = auto()
    3489        DATE = auto()
    3490        DATEMULTIRANGE = auto()
    3491        DATERANGE = auto()
    3492        DATETIME = auto()
    3493        DATETIME64 = auto()
    3494        DECIMAL = auto()
    3495        DOUBLE = auto()
    3496        ENUM = auto()
    3497        ENUM8 = auto()
    3498        ENUM16 = auto()
    3499        FIXEDSTRING = auto()
    3500        FLOAT = auto()
    3501        GEOGRAPHY = auto()
    3502        GEOMETRY = auto()
    3503        HLLSKETCH = auto()
    3504        HSTORE = auto()
    3505        IMAGE = auto()
    3506        INET = auto()
    3507        INT = auto()
    3508        INT128 = auto()
    3509        INT256 = auto()
    3510        INT4MULTIRANGE = auto()
    3511        INT4RANGE = auto()
    3512        INT8MULTIRANGE = auto()
    3513        INT8RANGE = auto()
    3514        INTERVAL = auto()
    3515        IPADDRESS = auto()
    3516        IPPREFIX = auto()
    3517        JSON = auto()
    3518        JSONB = auto()
    3519        LONGBLOB = auto()
    3520        LONGTEXT = auto()
    3521        LOWCARDINALITY = auto()
    3522        MAP = auto()
    3523        MEDIUMBLOB = auto()
    3524        MEDIUMINT = auto()
    3525        MEDIUMTEXT = auto()
    3526        MONEY = auto()
    3527        NCHAR = auto()
    3528        NESTED = auto()
    3529        NULL = auto()
    3530        NULLABLE = auto()
    3531        NUMMULTIRANGE = auto()
    3532        NUMRANGE = auto()
    3533        NVARCHAR = auto()
    3534        OBJECT = auto()
    3535        ROWVERSION = auto()
    3536        SERIAL = auto()
    3537        SET = auto()
    3538        SMALLINT = auto()
    3539        SMALLMONEY = auto()
    3540        SMALLSERIAL = auto()
    3541        STRUCT = auto()
    3542        SUPER = auto()
    3543        TEXT = auto()
    3544        TINYBLOB = auto()
    3545        TINYTEXT = auto()
    3546        TIME = auto()
    3547        TIMETZ = auto()
    3548        TIMESTAMP = auto()
    3549        TIMESTAMPLTZ = auto()
    3550        TIMESTAMPTZ = auto()
    3551        TINYINT = auto()
    3552        TSMULTIRANGE = auto()
    3553        TSRANGE = auto()
    3554        TSTZMULTIRANGE = auto()
    3555        TSTZRANGE = auto()
    3556        UBIGINT = auto()
    3557        UINT = auto()
    3558        UINT128 = auto()
    3559        UINT256 = auto()
    3560        UMEDIUMINT = auto()
    3561        UNIQUEIDENTIFIER = auto()
    3562        UNKNOWN = auto()  # Sentinel value, useful for type annotation
    3563        USERDEFINED = "USER-DEFINED"
    3564        USMALLINT = auto()
    3565        UTINYINT = auto()
    3566        UUID = auto()
    3567        VARBINARY = auto()
    3568        VARCHAR = auto()
    3569        VARIANT = auto()
    3570        XML = auto()
    3571        YEAR = auto()
    3572
    3573    TEXT_TYPES = {
    3574        Type.CHAR,
    3575        Type.NCHAR,
    3576        Type.VARCHAR,
    3577        Type.NVARCHAR,
    3578        Type.TEXT,
    3579    }
    3580
    3581    INTEGER_TYPES = {
    3582        Type.INT,
    3583        Type.TINYINT,
    3584        Type.SMALLINT,
    3585        Type.BIGINT,
    3586        Type.INT128,
    3587        Type.INT256,
    3588    }
    3589
    3590    FLOAT_TYPES = {
    3591        Type.FLOAT,
    3592        Type.DOUBLE,
    3593    }
    3594
    3595    NUMERIC_TYPES = {
    3596        *INTEGER_TYPES,
    3597        *FLOAT_TYPES,
    3598    }
    3599
    3600    TEMPORAL_TYPES = {
    3601        Type.TIME,
    3602        Type.TIMETZ,
    3603        Type.TIMESTAMP,
    3604        Type.TIMESTAMPTZ,
    3605        Type.TIMESTAMPLTZ,
    3606        Type.DATE,
    3607        Type.DATETIME,
    3608        Type.DATETIME64,
    3609    }
    3610
    3611    @classmethod
    3612    def build(
    3613        cls,
    3614        dtype: str | DataType | DataType.Type,
    3615        dialect: DialectType = None,
    3616        udt: bool = False,
    3617        **kwargs,
    3618    ) -> DataType:
    3619        """
    3620        Constructs a DataType object.
    3621
    3622        Args:
    3623            dtype: the data type of interest.
    3624            dialect: the dialect to use for parsing `dtype`, in case it's a string.
    3625            udt: when set to True, `dtype` will be used as-is if it can't be parsed into a
    3626                DataType, thus creating a user-defined type.
    3627            kawrgs: additional arguments to pass in the constructor of DataType.
    3628
    3629        Returns:
    3630            The constructed DataType object.
    3631        """
    3632        from sqlglot import parse_one
    3633
    3634        if isinstance(dtype, str):
    3635            if dtype.upper() == "UNKNOWN":
    3636                return DataType(this=DataType.Type.UNKNOWN, **kwargs)
    3637
    3638            try:
    3639                data_type_exp = parse_one(dtype, read=dialect, into=DataType)
    3640            except ParseError:
    3641                if udt:
    3642                    return DataType(this=DataType.Type.USERDEFINED, kind=dtype, **kwargs)
    3643                raise
    3644        elif isinstance(dtype, DataType.Type):
    3645            data_type_exp = DataType(this=dtype)
    3646        elif isinstance(dtype, DataType):
    3647            return dtype
    3648        else:
    3649            raise ValueError(f"Invalid data type: {type(dtype)}. Expected str or DataType.Type")
    3650
    3651        return DataType(**{**data_type_exp.args, **kwargs})
    3652
    3653    def is_type(self, *dtypes: str | DataType | DataType.Type) -> bool:
    3654        """
    3655        Checks whether this DataType matches one of the provided data types. Nested types or precision
    3656        will be compared using "structural equivalence" semantics, so e.g. array<int> != array<float>.
    3657
    3658        Args:
    3659            dtypes: the data types to compare this DataType to.
    3660
    3661        Returns:
    3662            True, if and only if there is a type in `dtypes` which is equal to this DataType.
    3663        """
    3664        for dtype in dtypes:
    3665            other = DataType.build(dtype, udt=True)
    3666
    3667            if (
    3668                other.expressions
    3669                or self.this == DataType.Type.USERDEFINED
    3670                or other.this == DataType.Type.USERDEFINED
    3671            ):
    3672                matches = self == other
    3673            else:
    3674                matches = self.this == other.this
    3675
    3676            if matches:
    3677                return True
    3678        return False

arg_types = {'this': True, 'expressions': False, 'nested': False, 'values': False, 'prefix': False, 'kind': False}
TEXT_TYPES = {<Type.CHAR: 'CHAR'>, <Type.TEXT: 'TEXT'>, <Type.VARCHAR: 'VARCHAR'>, <Type.NCHAR: 'NCHAR'>, <Type.NVARCHAR: 'NVARCHAR'>}
INTEGER_TYPES = {<Type.TINYINT: 'TINYINT'>, <Type.BIGINT: 'BIGINT'>, <Type.SMALLINT: 'SMALLINT'>, <Type.INT256: 'INT256'>, <Type.INT128: 'INT128'>, <Type.INT: 'INT'>}
FLOAT_TYPES = {<Type.DOUBLE: 'DOUBLE'>, <Type.FLOAT: 'FLOAT'>}
NUMERIC_TYPES = {<Type.TINYINT: 'TINYINT'>, <Type.INT256: 'INT256'>, <Type.BIGINT: 'BIGINT'>, <Type.DOUBLE: 'DOUBLE'>, <Type.FLOAT: 'FLOAT'>, <Type.INT128: 'INT128'>, <Type.SMALLINT: 'SMALLINT'>, <Type.INT: 'INT'>}
TEMPORAL_TYPES = {<Type.TIMESTAMP: 'TIMESTAMP'>, <Type.DATETIME: 'DATETIME'>, <Type.TIMETZ: 'TIMETZ'>, <Type.DATETIME64: 'DATETIME64'>, <Type.TIME: 'TIME'>, <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <Type.DATE: 'DATE'>}
@classmethod
def build( cls, dtype: str | DataType | DataType.Type, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, udt: bool = False, **kwargs) -> DataType: View Source

    3611    @classmethod
    3612    def build(
    3613        cls,
    3614        dtype: str | DataType | DataType.Type,
    3615        dialect: DialectType = None,
    3616        udt: bool = False,
    3617        **kwargs,
    3618    ) -> DataType:
    3619        """
    3620        Constructs a DataType object.
    3621
    3622        Args:
    3623            dtype: the data type of interest.
    3624            dialect: the dialect to use for parsing `dtype`, in case it's a string.
    3625            udt: when set to True, `dtype` will be used as-is if it can't be parsed into a
    3626                DataType, thus creating a user-defined type.
    3627            kawrgs: additional arguments to pass in the constructor of DataType.
    3628
    3629        Returns:
    3630            The constructed DataType object.
    3631        """
    3632        from sqlglot import parse_one
    3633
    3634        if isinstance(dtype, str):
    3635            if dtype.upper() == "UNKNOWN":
    3636                return DataType(this=DataType.Type.UNKNOWN, **kwargs)
    3637
    3638            try:
    3639                data_type_exp = parse_one(dtype, read=dialect, into=DataType)
    3640            except ParseError:
    3641                if udt:
    3642                    return DataType(this=DataType.Type.USERDEFINED, kind=dtype, **kwargs)
    3643                raise
    3644        elif isinstance(dtype, DataType.Type):
    3645            data_type_exp = DataType(this=dtype)
    3646        elif isinstance(dtype, DataType):
    3647            return dtype
    3648        else:
    3649            raise ValueError(f"Invalid data type: {type(dtype)}. Expected str or DataType.Type")
    3650
    3651        return DataType(**{**data_type_exp.args, **kwargs})

Constructs a DataType object.

###### Arguments:

- dtype: the data type of interest.
- dialect: the dialect to use for parsing `dtype`, in case it's a string.
- udt: when set to True, `dtype` will be used as-is if it can't be parsed into a DataType, thus creating a user-defined type.
- kawrgs: additional arguments to pass in the constructor of DataType.

###### Returns:

> The constructed DataType object.

def is_type( self, *dtypes: str | DataType | DataType.Type) -> bool: View Source

    3653    def is_type(self, *dtypes: str | DataType | DataType.Type) -> bool:
    3654        """
    3655        Checks whether this DataType matches one of the provided data types. Nested types or precision
    3656        will be compared using "structural equivalence" semantics, so e.g. array<int> != array<float>.
    3657
    3658        Args:
    3659            dtypes: the data types to compare this DataType to.
    3660
    3661        Returns:
    3662            True, if and only if there is a type in `dtypes` which is equal to this DataType.
    3663        """
    3664        for dtype in dtypes:
    3665            other = DataType.build(dtype, udt=True)
    3666
    3667            if (
    3668                other.expressions
    3669                or self.this == DataType.Type.USERDEFINED
    3670                or other.this == DataType.Type.USERDEFINED
    3671            ):
    3672                matches = self == other
    3673            else:
    3674                matches = self.this == other.this
    3675
    3676            if matches:
    3677                return True
    3678        return False

Checks whether this DataType matches one of the provided data types. Nested types or precision will be compared using "structural equivalence" semantics, so e.g. array != array.

###### Arguments:

- dtypes: the data types to compare this DataType to.

###### Returns:

> True, if and only if there is a type in `dtypes` which is equal to this DataType.

key = 'datatype'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DataType.Type(sqlglot.helper.AutoName): View Source

    3480    class Type(AutoName):
    3481        ARRAY = auto()
    3482        BIGDECIMAL = auto()
    3483        BIGINT = auto()
    3484        BIGSERIAL = auto()
    3485        BINARY = auto()
    3486        BIT = auto()
    3487        BOOLEAN = auto()
    3488        CHAR = auto()
    3489        DATE = auto()
    3490        DATEMULTIRANGE = auto()
    3491        DATERANGE = auto()
    3492        DATETIME = auto()
    3493        DATETIME64 = auto()
    3494        DECIMAL = auto()
    3495        DOUBLE = auto()
    3496        ENUM = auto()
    3497        ENUM8 = auto()
    3498        ENUM16 = auto()
    3499        FIXEDSTRING = auto()
    3500        FLOAT = auto()
    3501        GEOGRAPHY = auto()
    3502        GEOMETRY = auto()
    3503        HLLSKETCH = auto()
    3504        HSTORE = auto()
    3505        IMAGE = auto()
    3506        INET = auto()
    3507        INT = auto()
    3508        INT128 = auto()
    3509        INT256 = auto()
    3510        INT4MULTIRANGE = auto()
    3511        INT4RANGE = auto()
    3512        INT8MULTIRANGE = auto()
    3513        INT8RANGE = auto()
    3514        INTERVAL = auto()
    3515        IPADDRESS = auto()
    3516        IPPREFIX = auto()
    3517        JSON = auto()
    3518        JSONB = auto()
    3519        LONGBLOB = auto()
    3520        LONGTEXT = auto()
    3521        LOWCARDINALITY = auto()
    3522        MAP = auto()
    3523        MEDIUMBLOB = auto()
    3524        MEDIUMINT = auto()
    3525        MEDIUMTEXT = auto()
    3526        MONEY = auto()
    3527        NCHAR = auto()
    3528        NESTED = auto()
    3529        NULL = auto()
    3530        NULLABLE = auto()
    3531        NUMMULTIRANGE = auto()
    3532        NUMRANGE = auto()
    3533        NVARCHAR = auto()
    3534        OBJECT = auto()
    3535        ROWVERSION = auto()
    3536        SERIAL = auto()
    3537        SET = auto()
    3538        SMALLINT = auto()
    3539        SMALLMONEY = auto()
    3540        SMALLSERIAL = auto()
    3541        STRUCT = auto()
    3542        SUPER = auto()
    3543        TEXT = auto()
    3544        TINYBLOB = auto()
    3545        TINYTEXT = auto()
    3546        TIME = auto()
    3547        TIMETZ = auto()
    3548        TIMESTAMP = auto()
    3549        TIMESTAMPLTZ = auto()
    3550        TIMESTAMPTZ = auto()
    3551        TINYINT = auto()
    3552        TSMULTIRANGE = auto()
    3553        TSRANGE = auto()
    3554        TSTZMULTIRANGE = auto()
    3555        TSTZRANGE = auto()
    3556        UBIGINT = auto()
    3557        UINT = auto()
    3558        UINT128 = auto()
    3559        UINT256 = auto()
    3560        UMEDIUMINT = auto()
    3561        UNIQUEIDENTIFIER = auto()
    3562        UNKNOWN = auto()  # Sentinel value, useful for type annotation
    3563        USERDEFINED = "USER-DEFINED"
    3564        USMALLINT = auto()
    3565        UTINYINT = auto()
    3566        UUID = auto()
    3567        VARBINARY = auto()
    3568        VARCHAR = auto()
    3569        VARIANT = auto()
    3570        XML = auto()
    3571        YEAR = auto()

An enumeration.

ARRAY = <Type.ARRAY: 'ARRAY'>
BIGDECIMAL = <Type.BIGDECIMAL: 'BIGDECIMAL'>
BIGINT = <Type.BIGINT: 'BIGINT'>
BIGSERIAL = <Type.BIGSERIAL: 'BIGSERIAL'>
BINARY = <Type.BINARY: 'BINARY'>
BIT = <Type.BIT: 'BIT'>
BOOLEAN = <Type.BOOLEAN: 'BOOLEAN'>
CHAR = <Type.CHAR: 'CHAR'>
DATE = <Type.DATE: 'DATE'>
DATEMULTIRANGE = <Type.DATEMULTIRANGE: 'DATEMULTIRANGE'>
DATERANGE = <Type.DATERANGE: 'DATERANGE'>
DATETIME = <Type.DATETIME: 'DATETIME'>
DATETIME64 = <Type.DATETIME64: 'DATETIME64'>
DECIMAL = <Type.DECIMAL: 'DECIMAL'>
DOUBLE = <Type.DOUBLE: 'DOUBLE'>
ENUM = <Type.ENUM: 'ENUM'>
ENUM8 = <Type.ENUM8: 'ENUM8'>
ENUM16 = <Type.ENUM16: 'ENUM16'>
FIXEDSTRING = <Type.FIXEDSTRING: 'FIXEDSTRING'>
FLOAT = <Type.FLOAT: 'FLOAT'>
GEOGRAPHY = <Type.GEOGRAPHY: 'GEOGRAPHY'>
GEOMETRY = <Type.GEOMETRY: 'GEOMETRY'>
HLLSKETCH = <Type.HLLSKETCH: 'HLLSKETCH'>
HSTORE = <Type.HSTORE: 'HSTORE'>
IMAGE = <Type.IMAGE: 'IMAGE'>
INET = <Type.INET: 'INET'>
INT = <Type.INT: 'INT'>
INT128 = <Type.INT128: 'INT128'>
INT256 = <Type.INT256: 'INT256'>
INT4MULTIRANGE = <Type.INT4MULTIRANGE: 'INT4MULTIRANGE'>
INT4RANGE = <Type.INT4RANGE: 'INT4RANGE'>
INT8MULTIRANGE = <Type.INT8MULTIRANGE: 'INT8MULTIRANGE'>
INT8RANGE = <Type.INT8RANGE: 'INT8RANGE'>
INTERVAL = <Type.INTERVAL: 'INTERVAL'>
IPADDRESS = <Type.IPADDRESS: 'IPADDRESS'>
IPPREFIX = <Type.IPPREFIX: 'IPPREFIX'>
JSON = <Type.JSON: 'JSON'>
JSONB = <Type.JSONB: 'JSONB'>
LONGBLOB = <Type.LONGBLOB: 'LONGBLOB'>
LONGTEXT = <Type.LONGTEXT: 'LONGTEXT'>
LOWCARDINALITY = <Type.LOWCARDINALITY: 'LOWCARDINALITY'>
MAP = <Type.MAP: 'MAP'>
MEDIUMBLOB = <Type.MEDIUMBLOB: 'MEDIUMBLOB'>
MEDIUMINT = <Type.MEDIUMINT: 'MEDIUMINT'>
MEDIUMTEXT = <Type.MEDIUMTEXT: 'MEDIUMTEXT'>
MONEY = <Type.MONEY: 'MONEY'>
NCHAR = <Type.NCHAR: 'NCHAR'>
NESTED = <Type.NESTED: 'NESTED'>
NULL = <Type.NULL: 'NULL'>
NULLABLE = <Type.NULLABLE: 'NULLABLE'>
NUMMULTIRANGE = <Type.NUMMULTIRANGE: 'NUMMULTIRANGE'>
NUMRANGE = <Type.NUMRANGE: 'NUMRANGE'>
NVARCHAR = <Type.NVARCHAR: 'NVARCHAR'>
OBJECT = <Type.OBJECT: 'OBJECT'>
ROWVERSION = <Type.ROWVERSION: 'ROWVERSION'>
SERIAL = <Type.SERIAL: 'SERIAL'>
SET = <Type.SET: 'SET'>
SMALLINT = <Type.SMALLINT: 'SMALLINT'>
SMALLMONEY = <Type.SMALLMONEY: 'SMALLMONEY'>
SMALLSERIAL = <Type.SMALLSERIAL: 'SMALLSERIAL'>
STRUCT = <Type.STRUCT: 'STRUCT'>
SUPER = <Type.SUPER: 'SUPER'>
TEXT = <Type.TEXT: 'TEXT'>
TINYBLOB = <Type.TINYBLOB: 'TINYBLOB'>
TINYTEXT = <Type.TINYTEXT: 'TINYTEXT'>
TIME = <Type.TIME: 'TIME'>
TIMETZ = <Type.TIMETZ: 'TIMETZ'>
TIMESTAMP = <Type.TIMESTAMP: 'TIMESTAMP'>
TIMESTAMPLTZ = <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>
TIMESTAMPTZ = <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>
TINYINT = <Type.TINYINT: 'TINYINT'>
TSMULTIRANGE = <Type.TSMULTIRANGE: 'TSMULTIRANGE'>
TSRANGE = <Type.TSRANGE: 'TSRANGE'>
TSTZMULTIRANGE = <Type.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>
TSTZRANGE = <Type.TSTZRANGE: 'TSTZRANGE'>
UBIGINT = <Type.UBIGINT: 'UBIGINT'>
UINT = <Type.UINT: 'UINT'>
UINT128 = <Type.UINT128: 'UINT128'>
UINT256 = <Type.UINT256: 'UINT256'>
UMEDIUMINT = <Type.UMEDIUMINT: 'UMEDIUMINT'>
UNIQUEIDENTIFIER = <Type.UNIQUEIDENTIFIER: 'UNIQUEIDENTIFIER'>
UNKNOWN = <Type.UNKNOWN: 'UNKNOWN'>
USERDEFINED = <Type.USERDEFINED: 'USER-DEFINED'>
USMALLINT = <Type.USMALLINT: 'USMALLINT'>
UTINYINT = <Type.UTINYINT: 'UTINYINT'>
UUID = <Type.UUID: 'UUID'>
VARBINARY = <Type.VARBINARY: 'VARBINARY'>
VARCHAR = <Type.VARCHAR: 'VARCHAR'>
VARIANT = <Type.VARIANT: 'VARIANT'>
XML = <Type.XML: 'XML'>
YEAR = <Type.YEAR: 'YEAR'>

##### Inherited Members

enum.Enum
  name
  value

class PseudoType(Expression): View Source

    3682class PseudoType(Expression):
    3683    pass

key = 'pseudotype'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class ObjectIdentifier(Expression): View Source

    3687class ObjectIdentifier(Expression):
    3688    pass

key = 'objectidentifier'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class SubqueryPredicate(Predicate): View Source

    3692class SubqueryPredicate(Predicate):
    3693    pass

key = 'subquerypredicate'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class All(SubqueryPredicate): View Source

    3696class All(SubqueryPredicate):
    3697    pass

key = 'all'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Any(SubqueryPredicate): View Source

    3700class Any(SubqueryPredicate):
    3701    pass

key = 'any'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Exists(SubqueryPredicate): View Source

    3704class Exists(SubqueryPredicate):
    3705    pass

key = 'exists'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Command(Expression): View Source

    3710class Command(Expression):
    3711    arg_types = {"this": True, "expression": False}

arg_types = {'this': True, 'expression': False}
key = 'command'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Transaction(Expression): View Source

    3714class Transaction(Expression):
    3715    arg_types = {"this": False, "modes": False, "mark": False}

arg_types = {'this': False, 'modes': False, 'mark': False}
key = 'transaction'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Commit(Expression): View Source

    3718class Commit(Expression):
    3719    arg_types = {"chain": False, "this": False, "durability": False}

arg_types = {'chain': False, 'this': False, 'durability': False}
key = 'commit'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Rollback(Expression): View Source

    3722class Rollback(Expression):
    3723    arg_types = {"savepoint": False, "this": False}

arg_types = {'savepoint': False, 'this': False}
key = 'rollback'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class AlterTable(Expression): View Source

    3726class AlterTable(Expression):
    3727    arg_types = {"this": True, "actions": True, "exists": False, "only": False}

arg_types = {'this': True, 'actions': True, 'exists': False, 'only': False}
key = 'altertable'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class AddConstraint(Expression): View Source

    3730class AddConstraint(Expression):
    3731    arg_types = {"this": False, "expression": False, "enforced": False}

arg_types = {'this': False, 'expression': False, 'enforced': False}
key = 'addconstraint'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DropPartition(Expression): View Source

    3734class DropPartition(Expression):
    3735    arg_types = {"expressions": True, "exists": False}

arg_types = {'expressions': True, 'exists': False}
key = 'droppartition'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Binary(Condition): View Source

    3739class Binary(Condition):
    3740    arg_types = {"this": True, "expression": True}
    3741
    3742    @property
    3743    def left(self):
    3744        return self.this
    3745
    3746    @property
    3747    def right(self):
    3748        return self.expression

arg_types = {'this': True, 'expression': True}
left
right
key = 'binary'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Add(Binary): View Source

    3751class Add(Binary):
    3752    pass

key = 'add'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Connector(Binary): View Source

    3755class Connector(Binary):
    3756    pass

key = 'connector'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class And(Connector): View Source

    3759class And(Connector):
    3760    pass

key = 'and'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Or(Connector): View Source

    3763class Or(Connector):
    3764    pass

key = 'or'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class BitwiseAnd(Binary): View Source

    3767class BitwiseAnd(Binary):
    3768    pass

key = 'bitwiseand'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class BitwiseLeftShift(Binary): View Source

    3771class BitwiseLeftShift(Binary):
    3772    pass

key = 'bitwiseleftshift'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class BitwiseOr(Binary): View Source

    3775class BitwiseOr(Binary):
    3776    pass

key = 'bitwiseor'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class BitwiseRightShift(Binary): View Source

    3779class BitwiseRightShift(Binary):
    3780    pass

key = 'bitwiserightshift'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class BitwiseXor(Binary): View Source

    3783class BitwiseXor(Binary):
    3784    pass

key = 'bitwisexor'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Div(Binary): View Source

    3787class Div(Binary):
    3788    pass

key = 'div'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Overlaps(Binary): View Source

    3791class Overlaps(Binary):
    3792    pass

key = 'overlaps'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Dot(Binary): View Source

    3795class Dot(Binary):
    3796    @property
    3797    def name(self) -> str:
    3798        return self.expression.name
    3799
    3800    @property
    3801    def output_name(self) -> str:
    3802        return self.name
    3803
    3804    @classmethod
    3805    def build(self, expressions: t.Sequence[Expression]) -> Dot:
    3806        """Build a Dot object with a sequence of expressions."""
    3807        if len(expressions) < 2:
    3808            raise ValueError(f"Dot requires >= 2 expressions.")
    3809
    3810        return t.cast(Dot, reduce(lambda x, y: Dot(this=x, expression=y), expressions))

name: str
output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

@classmethod
def build( self, expressions: Sequence[Expression]) -> Dot: View Source

    3804    @classmethod
    3805    def build(self, expressions: t.Sequence[Expression]) -> Dot:
    3806        """Build a Dot object with a sequence of expressions."""
    3807        if len(expressions) < 2:
    3808            raise ValueError(f"Dot requires >= 2 expressions.")
    3809
    3810        return t.cast(Dot, reduce(lambda x, y: Dot(this=x, expression=y), expressions))

Build a Dot object with a sequence of expressions.

key = 'dot'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DPipe(Binary): View Source

    3813class DPipe(Binary):
    3814    pass

key = 'dpipe'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class SafeDPipe(DPipe): View Source

    3817class SafeDPipe(DPipe):
    3818    pass

key = 'safedpipe'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class EQ(Binary, Predicate): View Source

    3821class EQ(Binary, Predicate):
    3822    pass

key = 'eq'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class NullSafeEQ(Binary, Predicate): View Source

    3825class NullSafeEQ(Binary, Predicate):
    3826    pass

key = 'nullsafeeq'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class NullSafeNEQ(Binary, Predicate): View Source

    3829class NullSafeNEQ(Binary, Predicate):
    3830    pass

key = 'nullsafeneq'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Distance(Binary): View Source

    3833class Distance(Binary):
    3834    pass

key = 'distance'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Escape(Binary): View Source

    3837class Escape(Binary):
    3838    pass

key = 'escape'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Glob(Binary, Predicate): View Source

    3841class Glob(Binary, Predicate):
    3842    pass

key = 'glob'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class GT(Binary, Predicate): View Source

    3845class GT(Binary, Predicate):
    3846    pass

key = 'gt'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class GTE(Binary, Predicate): View Source

    3849class GTE(Binary, Predicate):
    3850    pass

key = 'gte'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ILike(Binary, Predicate): View Source

    3853class ILike(Binary, Predicate):
    3854    pass

key = 'ilike'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ILikeAny(Binary, Predicate): View Source

    3857class ILikeAny(Binary, Predicate):
    3858    pass

key = 'ilikeany'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class IntDiv(Binary): View Source

    3861class IntDiv(Binary):
    3862    pass

key = 'intdiv'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Is(Binary, Predicate): View Source

    3865class Is(Binary, Predicate):
    3866    pass

key = 'is'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Kwarg(Binary): View Source

    3869class Kwarg(Binary):
    3870    """Kwarg in special functions like func(kwarg => y)."""

Kwarg in special functions like func(kwarg => y).

key = 'kwarg'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Like(Binary, Predicate): View Source

    3873class Like(Binary, Predicate):
    3874    pass

key = 'like'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class LikeAny(Binary, Predicate): View Source

    3877class LikeAny(Binary, Predicate):
    3878    pass

key = 'likeany'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class LT(Binary, Predicate): View Source

    3881class LT(Binary, Predicate):
    3882    pass

key = 'lt'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class LTE(Binary, Predicate): View Source

    3885class LTE(Binary, Predicate):
    3886    pass

key = 'lte'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Mod(Binary): View Source

    3889class Mod(Binary):
    3890    pass

key = 'mod'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Mul(Binary): View Source

    3893class Mul(Binary):
    3894    pass

key = 'mul'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class NEQ(Binary, Predicate): View Source

    3897class NEQ(Binary, Predicate):
    3898    pass

key = 'neq'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class SimilarTo(Binary, Predicate): View Source

    3901class SimilarTo(Binary, Predicate):
    3902    pass

key = 'similarto'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Slice(Binary): View Source

    3905class Slice(Binary):
    3906    arg_types = {"this": False, "expression": False}

arg_types = {'this': False, 'expression': False}
key = 'slice'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Sub(Binary): View Source

    3909class Sub(Binary):
    3910    pass

key = 'sub'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArrayOverlaps(Binary): View Source

    3913class ArrayOverlaps(Binary):
    3914    pass

key = 'arrayoverlaps'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Unary(Condition): View Source

    3919class Unary(Condition):
    3920    pass

key = 'unary'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class BitwiseNot(Unary): View Source

    3923class BitwiseNot(Unary):
    3924    pass

key = 'bitwisenot'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Not(Unary): View Source

    3927class Not(Unary):
    3928    pass

key = 'not'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Paren(Unary): View Source

    3931class Paren(Unary):
    3932    arg_types = {"this": True, "with": False}
    3933
    3934    @property
    3935    def output_name(self) -> str:
    3936        return self.this.name

arg_types = {'this': True, 'with': False}
output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

key = 'paren'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Neg(Unary): View Source

    3939class Neg(Unary):
    3940    pass

key = 'neg'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Alias(Expression): View Source

    3943class Alias(Expression):
    3944    arg_types = {"this": True, "alias": False}
    3945
    3946    @property
    3947    def output_name(self) -> str:
    3948        return self.alias

arg_types = {'this': True, 'alias': False}
output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

key = 'alias'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Aliases(Expression): View Source

    3951class Aliases(Expression):
    3952    arg_types = {"this": True, "expressions": True}
    3953
    3954    @property
    3955    def aliases(self):
    3956        return self.expressions

arg_types = {'this': True, 'expressions': True}
aliases
key = 'aliases'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class AtTimeZone(Expression): View Source

    3959class AtTimeZone(Expression):
    3960    arg_types = {"this": True, "zone": True}

arg_types = {'this': True, 'zone': True}
key = 'attimezone'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Between(Predicate): View Source

    3963class Between(Predicate):
    3964    arg_types = {"this": True, "low": True, "high": True}

arg_types = {'this': True, 'low': True, 'high': True}
key = 'between'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Bracket(Condition): View Source

    3967class Bracket(Condition):
    3968    arg_types = {"this": True, "expressions": True}
    3969
    3970    @property
    3971    def output_name(self) -> str:
    3972        if len(self.expressions) == 1:
    3973            return self.expressions[0].output_name
    3974
    3975        return super().output_name

arg_types = {'this': True, 'expressions': True}
output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

key = 'bracket'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class SafeBracket(Bracket): View Source

    3978class SafeBracket(Bracket):
    3979    """Represents array lookup where OOB index yields NULL instead of causing a failure."""

Represents array lookup where OOB index yields NULL instead of causing a failure.

key = 'safebracket'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Bracket
  arg_types
  output_name
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Distinct(Expression): View Source

    3982class Distinct(Expression):
    3983    arg_types = {"expressions": False, "on": False}

arg_types = {'expressions': False, 'on': False}
key = 'distinct'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class In(Predicate): View Source

    3986class In(Predicate):
    3987    arg_types = {
    3988        "this": True,
    3989        "expressions": False,
    3990        "query": False,
    3991        "unnest": False,
    3992        "field": False,
    3993        "is_global": False,
    3994    }

arg_types = {'this': True, 'expressions': False, 'query': False, 'unnest': False, 'field': False, 'is_global': False}
key = 'in'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TimeUnit(Expression): View Source

    3997class TimeUnit(Expression):
    3998    """Automatically converts unit arg into a var."""
    3999
    4000    arg_types = {"unit": False}
    4001
    4002    def __init__(self, **args):
    4003        unit = args.get("unit")
    4004        if isinstance(unit, (Column, Literal)):
    4005            args["unit"] = Var(this=unit.name)
    4006        elif isinstance(unit, Week):
    4007            unit.set("this", Var(this=unit.this.name))
    4008
    4009        super().__init__(**args)

Automatically converts unit arg into a var.

TimeUnit(**args) View Source

    4002    def __init__(self, **args):
    4003        unit = args.get("unit")
    4004        if isinstance(unit, (Column, Literal)):
    4005            args["unit"] = Var(this=unit.name)
    4006        elif isinstance(unit, Week):
    4007            unit.set("this", Var(this=unit.this.name))
    4008
    4009        super().__init__(**args)

arg_types = {'unit': False}
key = 'timeunit'

##### Inherited Members

Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class IntervalSpan(Expression): View Source

    4015class IntervalSpan(Expression):
    4016    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'intervalspan'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Interval(TimeUnit): View Source

    4019class Interval(TimeUnit):
    4020    arg_types = {"this": False, "unit": False}
    4021
    4022    @property
    4023    def unit(self) -> t.Optional[Var]:
    4024        return self.args.get("unit")

arg_types = {'this': False, 'unit': False}
unit: Optional[Var]
key = 'interval'

##### Inherited Members

TimeUnit
  TimeUnit
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class IgnoreNulls(Expression): View Source

    4027class IgnoreNulls(Expression):
    4028    pass

key = 'ignorenulls'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class RespectNulls(Expression): View Source

    4031class RespectNulls(Expression):
    4032    pass

key = 'respectnulls'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Func(Condition): View Source

    4036class Func(Condition):
    4037    """
    4038    The base class for all function expressions.
    4039
    4040    Attributes:
    4041        is_var_len_args (bool): if set to True the last argument defined in arg_types will be
    4042            treated as a variable length argument and the argument's value will be stored as a list.
    4043        _sql_names (list): determines the SQL name (1st item in the list) and aliases (subsequent items)
    4044            for this function expression. These values are used to map this node to a name during parsing
    4045            as well as to provide the function's name during SQL string generation. By default the SQL
    4046            name is set to the expression's class name transformed to snake case.
    4047    """
    4048
    4049    is_var_len_args = False
    4050
    4051    @classmethod
    4052    def from_arg_list(cls, args):
    4053        if cls.is_var_len_args:
    4054            all_arg_keys = list(cls.arg_types)
    4055            # If this function supports variable length argument treat the last argument as such.
    4056            non_var_len_arg_keys = all_arg_keys[:-1] if cls.is_var_len_args else all_arg_keys
    4057            num_non_var = len(non_var_len_arg_keys)
    4058
    4059            args_dict = {arg_key: arg for arg, arg_key in zip(args, non_var_len_arg_keys)}
    4060            args_dict[all_arg_keys[-1]] = args[num_non_var:]
    4061        else:
    4062            args_dict = {arg_key: arg for arg, arg_key in zip(args, cls.arg_types)}
    4063
    4064        return cls(**args_dict)
    4065
    4066    @classmethod
    4067    def sql_names(cls):
    4068        if cls is Func:
    4069            raise NotImplementedError(
    4070                "SQL name is only supported by concrete function implementations"
    4071            )
    4072        if "_sql_names" not in cls.__dict__:
    4073            cls._sql_names = [camel_to_snake_case(cls.__name__)]
    4074        return cls._sql_names
    4075
    4076    @classmethod
    4077    def sql_name(cls):
    4078        return cls.sql_names()[0]
    4079
    4080    @classmethod
    4081    def default_parser_mappings(cls):
    4082        return {name: cls.from_arg_list for name in cls.sql_names()}

The base class for all function expressions.

###### Attributes:

- is_var_len_args (bool): if set to True the last argument defined in arg_types will be treated as a variable length argument and the argument's value will be stored as a list.
- _sql_names (list): determines the SQL name (1st item in the list) and aliases (subsequent items) for this function expression. These values are used to map this node to a name during parsing as well as to provide the function's name during SQL string generation. By default the SQL name is set to the expression's class name transformed to snake case.

is_var_len_args = False
@classmethod
def from_arg_list(cls, args): View Source

    4051    @classmethod
    4052    def from_arg_list(cls, args):
    4053        if cls.is_var_len_args:
    4054            all_arg_keys = list(cls.arg_types)
    4055            # If this function supports variable length argument treat the last argument as such.
    4056            non_var_len_arg_keys = all_arg_keys[:-1] if cls.is_var_len_args else all_arg_keys
    4057            num_non_var = len(non_var_len_arg_keys)
    4058
    4059            args_dict = {arg_key: arg for arg, arg_key in zip(args, non_var_len_arg_keys)}
    4060            args_dict[all_arg_keys[-1]] = args[num_non_var:]
    4061        else:
    4062            args_dict = {arg_key: arg for arg, arg_key in zip(args, cls.arg_types)}
    4063
    4064        return cls(**args_dict)

@classmethod
def sql_names(cls): View Source

    4066    @classmethod
    4067    def sql_names(cls):
    4068        if cls is Func:
    4069            raise NotImplementedError(
    4070                "SQL name is only supported by concrete function implementations"
    4071            )
    4072        if "_sql_names" not in cls.__dict__:
    4073            cls._sql_names = [camel_to_snake_case(cls.__name__)]
    4074        return cls._sql_names

@classmethod
def sql_name(cls): View Source

    4076    @classmethod
    4077    def sql_name(cls):
    4078        return cls.sql_names()[0]

@classmethod
def default_parser_mappings(cls): View Source

    4080    @classmethod
    4081    def default_parser_mappings(cls):
    4082        return {name: cls.from_arg_list for name in cls.sql_names()}

key = 'func'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class AggFunc(Func): View Source

    4085class AggFunc(Func):
    4086    pass

key = 'aggfunc'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ParameterizedAgg(AggFunc): View Source

    4089class ParameterizedAgg(AggFunc):
    4090    arg_types = {"this": True, "expressions": True, "params": True}

arg_types = {'this': True, 'expressions': True, 'params': True}
key = 'parameterizedagg'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Abs(Func): View Source

    4093class Abs(Func):
    4094    pass

key = 'abs'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Transform(Func): View Source

    4098class Transform(Func):
    4099    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'transform'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Anonymous(Func): View Source

    4102class Anonymous(Func):
    4103    arg_types = {"this": True, "expressions": False}
    4104    is_var_len_args = True

arg_types = {'this': True, 'expressions': False}
is_var_len_args = True
key = 'anonymous'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Hll(AggFunc): View Source

    4109class Hll(AggFunc):
    4110    arg_types = {"this": True, "expressions": False}
    4111    is_var_len_args = True

arg_types = {'this': True, 'expressions': False}
is_var_len_args = True
key = 'hll'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ApproxDistinct(AggFunc): View Source

    4114class ApproxDistinct(AggFunc):
    4115    arg_types = {"this": True, "accuracy": False}
    4116    _sql_names = ["APPROX_DISTINCT", "APPROX_COUNT_DISTINCT"]

arg_types = {'this': True, 'accuracy': False}
key = 'approxdistinct'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Array(Func): View Source

    4119class Array(Func):
    4120    arg_types = {"expressions": False}
    4121    is_var_len_args = True

arg_types = {'expressions': False}
is_var_len_args = True
key = 'array'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ToChar(Func): View Source

    4125class ToChar(Func):
    4126    arg_types = {"this": True, "format": False}

arg_types = {'this': True, 'format': False}
key = 'tochar'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class GenerateSeries(Func): View Source

    4129class GenerateSeries(Func):
    4130    arg_types = {"start": True, "end": True, "step": False}

arg_types = {'start': True, 'end': True, 'step': False}
key = 'generateseries'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArrayAgg(AggFunc): View Source

    4133class ArrayAgg(AggFunc):
    4134    pass

key = 'arrayagg'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArrayAll(Func): View Source

    4137class ArrayAll(Func):
    4138    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'arrayall'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArrayAny(Func): View Source

    4141class ArrayAny(Func):
    4142    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'arrayany'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArrayConcat(Func): View Source

    4145class ArrayConcat(Func):
    4146    _sql_names = ["ARRAY_CONCAT", "ARRAY_CAT"]
    4147    arg_types = {"this": True, "expressions": False}
    4148    is_var_len_args = True

arg_types = {'this': True, 'expressions': False}
is_var_len_args = True
key = 'arrayconcat'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArrayContains(Binary, Func): View Source

    4151class ArrayContains(Binary, Func):
    4152    pass

key = 'arraycontains'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArrayContained(Binary): View Source

    4155class ArrayContained(Binary):
    4156    pass

key = 'arraycontained'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArrayFilter(Func): View Source

    4159class ArrayFilter(Func):
    4160    arg_types = {"this": True, "expression": True}
    4161    _sql_names = ["FILTER", "ARRAY_FILTER"]

arg_types = {'this': True, 'expression': True}
key = 'arrayfilter'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArrayJoin(Func): View Source

    4164class ArrayJoin(Func):
    4165    arg_types = {"this": True, "expression": True, "null": False}

arg_types = {'this': True, 'expression': True, 'null': False}
key = 'arrayjoin'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArraySize(Func): View Source

    4168class ArraySize(Func):
    4169    arg_types = {"this": True, "expression": False}

arg_types = {'this': True, 'expression': False}
key = 'arraysize'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArraySort(Func): View Source

    4172class ArraySort(Func):
    4173    arg_types = {"this": True, "expression": False}

arg_types = {'this': True, 'expression': False}
key = 'arraysort'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArraySum(Func): View Source

    4176class ArraySum(Func):
    4177    pass

key = 'arraysum'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ArrayUnionAgg(AggFunc): View Source

    4180class ArrayUnionAgg(AggFunc):
    4181    pass

key = 'arrayunionagg'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Avg(AggFunc): View Source

    4184class Avg(AggFunc):
    4185    pass

key = 'avg'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class AnyValue(AggFunc): View Source

    4188class AnyValue(AggFunc):
    4189    arg_types = {"this": True, "having": False, "max": False, "ignore_nulls": False}

arg_types = {'this': True, 'having': False, 'max': False, 'ignore_nulls': False}
key = 'anyvalue'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class First(Func): View Source

    4192class First(Func):
    4193    arg_types = {"this": True, "ignore_nulls": False}

arg_types = {'this': True, 'ignore_nulls': False}
key = 'first'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Last(Func): View Source

    4196class Last(Func):
    4197    arg_types = {"this": True, "ignore_nulls": False}

arg_types = {'this': True, 'ignore_nulls': False}
key = 'last'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Case(Func): View Source

    4200class Case(Func):
    4201    arg_types = {"this": False, "ifs": True, "default": False}
    4202
    4203    def when(self, condition: ExpOrStr, then: ExpOrStr, copy: bool = True, **opts) -> Case:
    4204        instance = maybe_copy(self, copy)
    4205        instance.append(
    4206            "ifs",
    4207            If(
    4208                this=maybe_parse(condition, copy=copy, **opts),
    4209                true=maybe_parse(then, copy=copy, **opts),
    4210            ),
    4211        )
    4212        return instance
    4213
    4214    def else_(self, condition: ExpOrStr, copy: bool = True, **opts) -> Case:
    4215        instance = maybe_copy(self, copy)
    4216        instance.set("default", maybe_parse(condition, copy=copy, **opts))
    4217        return instance

arg_types = {'this': False, 'ifs': True, 'default': False}
def when( self, condition: Union[str, Expression], then: Union[str, Expression], copy: bool = True, **opts) -> Case: View Source

    4203    def when(self, condition: ExpOrStr, then: ExpOrStr, copy: bool = True, **opts) -> Case:
    4204        instance = maybe_copy(self, copy)
    4205        instance.append(
    4206            "ifs",
    4207            If(
    4208                this=maybe_parse(condition, copy=copy, **opts),
    4209                true=maybe_parse(then, copy=copy, **opts),
    4210            ),
    4211        )
    4212        return instance

def else_( self, condition: Union[str, Expression], copy: bool = True, **opts) -> Case: View Source

    4214    def else_(self, condition: ExpOrStr, copy: bool = True, **opts) -> Case:
    4215        instance = maybe_copy(self, copy)
    4216        instance.set("default", maybe_parse(condition, copy=copy, **opts))
    4217        return instance

key = 'case'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Cast(Func): View Source

    4220class Cast(Func):
    4221    arg_types = {"this": True, "to": True, "format": False}
    4222
    4223    @property
    4224    def name(self) -> str:
    4225        return self.this.name
    4226
    4227    @property
    4228    def to(self) -> DataType:
    4229        return self.args["to"]
    4230
    4231    @property
    4232    def output_name(self) -> str:
    4233        return self.name
    4234
    4235    def is_type(self, *dtypes: str | DataType | DataType.Type) -> bool:
    4236        """
    4237        Checks whether this Cast's DataType matches one of the provided data types. Nested types
    4238        like arrays or structs will be compared using "structural equivalence" semantics, so e.g.
    4239        array<int> != array<float>.
    4240
    4241        Args:
    4242            dtypes: the data types to compare this Cast's DataType to.
    4243
    4244        Returns:
    4245            True, if and only if there is a type in `dtypes` which is equal to this Cast's DataType.
    4246        """
    4247        return self.to.is_type(*dtypes)

arg_types = {'this': True, 'to': True, 'format': False}
name: str
to: DataType
output_name: str

Name of the output column if this expression is a selection.

If the Expression has no output name, an empty string is returned.

###### Example:

>     >>> from sqlglot import parse_one
>     >>> parse_one("SELECT a")sqlglot.expressions[0].output_name
>     'a'
>     >>> parse_one("SELECT b AS c")sqlglot.expressions[0].output_name
>     'c'
>     >>> parse_one("SELECT 1 + 2")sqlglot.expressions[0].output_name
>     ''

def is_type( self, *dtypes: str | DataType | DataType.Type) -> bool: View Source

    4235    def is_type(self, *dtypes: str | DataType | DataType.Type) -> bool:
    4236        """
    4237        Checks whether this Cast's DataType matches one of the provided data types. Nested types
    4238        like arrays or structs will be compared using "structural equivalence" semantics, so e.g.
    4239        array<int> != array<float>.
    4240
    4241        Args:
    4242            dtypes: the data types to compare this Cast's DataType to.
    4243
    4244        Returns:
    4245            True, if and only if there is a type in `dtypes` which is equal to this Cast's DataType.
    4246        """
    4247        return self.to.is_type(*dtypes)

Checks whether this Cast's DataType matches one of the provided data types. Nested types like arrays or structs will be compared using "structural equivalence" semantics, so e.g. array != array.

###### Arguments:

- dtypes: the data types to compare this Cast's DataType to.

###### Returns:

> True, if and only if there is a type in `dtypes` which is equal to this Cast's DataType.

key = 'cast'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TryCast(Cast): View Source

    4250class TryCast(Cast):
    4251    pass

key = 'trycast'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  alias_or_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Cast
  arg_types
  name
  to
  output_name
  is_type
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class CastToStrType(Func): View Source

    4254class CastToStrType(Func):
    4255    arg_types = {"this": True, "to": True}

arg_types = {'this': True, 'to': True}
key = 'casttostrtype'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Collate(Binary): View Source

    4258class Collate(Binary):
    4259    pass

key = 'collate'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Ceil(Func): View Source

    4262class Ceil(Func):
    4263    arg_types = {"this": True, "decimals": False}
    4264    _sql_names = ["CEIL", "CEILING"]

arg_types = {'this': True, 'decimals': False}
key = 'ceil'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Coalesce(Func): View Source

    4267class Coalesce(Func):
    4268    arg_types = {"this": True, "expressions": False}
    4269    is_var_len_args = True
    4270    _sql_names = ["COALESCE", "IFNULL", "NVL"]

arg_types = {'this': True, 'expressions': False}
is_var_len_args = True
key = 'coalesce'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Concat(Func): View Source

    4273class Concat(Func):
    4274    arg_types = {"expressions": True}
    4275    is_var_len_args = True

arg_types = {'expressions': True}
is_var_len_args = True
key = 'concat'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class SafeConcat(Concat): View Source

    4278class SafeConcat(Concat):
    4279    pass

key = 'safeconcat'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Concat
  arg_types
  is_var_len_args
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ConcatWs(Concat): View Source

    4282class ConcatWs(Concat):
    4283    _sql_names = ["CONCAT_WS"]

key = 'concatws'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Concat
  arg_types
  is_var_len_args
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Count(AggFunc): View Source

    4286class Count(AggFunc):
    4287    arg_types = {"this": False, "expressions": False}
    4288    is_var_len_args = True

arg_types = {'this': False, 'expressions': False}
is_var_len_args = True
key = 'count'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class CountIf(AggFunc): View Source

    4291class CountIf(AggFunc):
    4292    pass

key = 'countif'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class CurrentDate(Func): View Source

    4295class CurrentDate(Func):
    4296    arg_types = {"this": False}

arg_types = {'this': False}
key = 'currentdate'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class CurrentDatetime(Func): View Source

    4299class CurrentDatetime(Func):
    4300    arg_types = {"this": False}

arg_types = {'this': False}
key = 'currentdatetime'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class CurrentTime(Func): View Source

    4303class CurrentTime(Func):
    4304    arg_types = {"this": False}

arg_types = {'this': False}
key = 'currenttime'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class CurrentTimestamp(Func): View Source

    4307class CurrentTimestamp(Func):
    4308    arg_types = {"this": False}

arg_types = {'this': False}
key = 'currenttimestamp'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class CurrentUser(Func): View Source

    4311class CurrentUser(Func):
    4312    arg_types = {"this": False}

arg_types = {'this': False}
key = 'currentuser'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DateAdd(Func, TimeUnit): View Source

    4315class DateAdd(Func, TimeUnit):
    4316    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'dateadd'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DateSub(Func, TimeUnit): View Source

    4319class DateSub(Func, TimeUnit):
    4320    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'datesub'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DateDiff(Func, TimeUnit): View Source

    4323class DateDiff(Func, TimeUnit):
    4324    _sql_names = ["DATEDIFF", "DATE_DIFF"]
    4325    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'datediff'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DateTrunc(Func): View Source

    4328class DateTrunc(Func):
    4329    arg_types = {"unit": True, "this": True, "zone": False}

arg_types = {'unit': True, 'this': True, 'zone': False}
key = 'datetrunc'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DatetimeAdd(Func, TimeUnit): View Source

    4332class DatetimeAdd(Func, TimeUnit):
    4333    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'datetimeadd'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DatetimeSub(Func, TimeUnit): View Source

    4336class DatetimeSub(Func, TimeUnit):
    4337    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'datetimesub'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DatetimeDiff(Func, TimeUnit): View Source

    4340class DatetimeDiff(Func, TimeUnit):
    4341    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'datetimediff'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DatetimeTrunc(Func, TimeUnit): View Source

    4344class DatetimeTrunc(Func, TimeUnit):
    4345    arg_types = {"this": True, "unit": True, "zone": False}

arg_types = {'this': True, 'unit': True, 'zone': False}
key = 'datetimetrunc'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DayOfWeek(Func): View Source

    4348class DayOfWeek(Func):
    4349    _sql_names = ["DAY_OF_WEEK", "DAYOFWEEK"]

key = 'dayofweek'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DayOfMonth(Func): View Source

    4352class DayOfMonth(Func):
    4353    _sql_names = ["DAY_OF_MONTH", "DAYOFMONTH"]

key = 'dayofmonth'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DayOfYear(Func): View Source

    4356class DayOfYear(Func):
    4357    _sql_names = ["DAY_OF_YEAR", "DAYOFYEAR"]

key = 'dayofyear'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class WeekOfYear(Func): View Source

    4360class WeekOfYear(Func):
    4361    _sql_names = ["WEEK_OF_YEAR", "WEEKOFYEAR"]

key = 'weekofyear'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class MonthsBetween(Func): View Source

    4364class MonthsBetween(Func):
    4365    arg_types = {"this": True, "expression": True, "roundoff": False}

arg_types = {'this': True, 'expression': True, 'roundoff': False}
key = 'monthsbetween'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class LastDateOfMonth(Func): View Source

    4368class LastDateOfMonth(Func):
    4369    pass

key = 'lastdateofmonth'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Extract(Func): View Source

    4372class Extract(Func):
    4373    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'extract'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TimestampAdd(Func, TimeUnit): View Source

    4376class TimestampAdd(Func, TimeUnit):
    4377    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'timestampadd'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TimestampSub(Func, TimeUnit): View Source

    4380class TimestampSub(Func, TimeUnit):
    4381    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'timestampsub'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TimestampDiff(Func, TimeUnit): View Source

    4384class TimestampDiff(Func, TimeUnit):
    4385    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'timestampdiff'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TimestampTrunc(Func, TimeUnit): View Source

    4388class TimestampTrunc(Func, TimeUnit):
    4389    arg_types = {"this": True, "unit": True, "zone": False}

arg_types = {'this': True, 'unit': True, 'zone': False}
key = 'timestamptrunc'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TimeAdd(Func, TimeUnit): View Source

    4392class TimeAdd(Func, TimeUnit):
    4393    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'timeadd'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TimeSub(Func, TimeUnit): View Source

    4396class TimeSub(Func, TimeUnit):
    4397    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'timesub'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TimeDiff(Func, TimeUnit): View Source

    4400class TimeDiff(Func, TimeUnit):
    4401    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'timediff'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TimeTrunc(Func, TimeUnit): View Source

    4404class TimeTrunc(Func, TimeUnit):
    4405    arg_types = {"this": True, "unit": True, "zone": False}

arg_types = {'this': True, 'unit': True, 'zone': False}
key = 'timetrunc'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class DateFromParts(Func): View Source

    4408class DateFromParts(Func):
    4409    _sql_names = ["DATEFROMPARTS"]
    4410    arg_types = {"year": True, "month": True, "day": True}

arg_types = {'year': True, 'month': True, 'day': True}
key = 'datefromparts'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DateStrToDate(Func): View Source

    4413class DateStrToDate(Func):
    4414    pass

key = 'datestrtodate'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DateToDateStr(Func): View Source

    4417class DateToDateStr(Func):
    4418    pass

key = 'datetodatestr'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DateToDi(Func): View Source

    4421class DateToDi(Func):
    4422    pass

key = 'datetodi'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Date(Func): View Source

    4426class Date(Func):
    4427    arg_types = {"this": True, "zone": False}

arg_types = {'this': True, 'zone': False}
key = 'date'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Day(Func): View Source

    4430class Day(Func):
    4431    pass

key = 'day'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Decode(Func): View Source

    4434class Decode(Func):
    4435    arg_types = {"this": True, "charset": True, "replace": False}

arg_types = {'this': True, 'charset': True, 'replace': False}
key = 'decode'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class DiToDate(Func): View Source

    4438class DiToDate(Func):
    4439    pass

key = 'ditodate'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Encode(Func): View Source

    4442class Encode(Func):
    4443    arg_types = {"this": True, "charset": True}

arg_types = {'this': True, 'charset': True}
key = 'encode'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Exp(Func): View Source

    4446class Exp(Func):
    4447    pass

key = 'exp'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Explode(Func): View Source

    4450class Explode(Func):
    4451    pass

key = 'explode'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Floor(Func): View Source

    4454class Floor(Func):
    4455    arg_types = {"this": True, "decimals": False}

arg_types = {'this': True, 'decimals': False}
key = 'floor'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class FromBase64(Func): View Source

    4458class FromBase64(Func):
    4459    pass

key = 'frombase64'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ToBase64(Func): View Source

    4462class ToBase64(Func):
    4463    pass

key = 'tobase64'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Greatest(Func): View Source

    4466class Greatest(Func):
    4467    arg_types = {"this": True, "expressions": False}
    4468    is_var_len_args = True

arg_types = {'this': True, 'expressions': False}
is_var_len_args = True
key = 'greatest'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class GroupConcat(AggFunc): View Source

    4471class GroupConcat(AggFunc):
    4472    arg_types = {"this": True, "separator": False}

arg_types = {'this': True, 'separator': False}
key = 'groupconcat'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Hex(Func): View Source

    4475class Hex(Func):
    4476    pass

key = 'hex'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Xor(Connector, Func): View Source

    4479class Xor(Connector, Func):
    4480    arg_types = {"this": False, "expression": False, "expressions": False}

arg_types = {'this': False, 'expression': False, 'expressions': False}
key = 'xor'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  left
  right
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class If(Func): View Source

    4483class If(Func):
    4484    arg_types = {"this": True, "true": True, "false": False}

arg_types = {'this': True, 'true': True, 'false': False}
key = 'if'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Initcap(Func): View Source

    4487class Initcap(Func):
    4488    arg_types = {"this": True, "expression": False}

arg_types = {'this': True, 'expression': False}
key = 'initcap'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class IsNan(Func): View Source

    4491class IsNan(Func):
    4492    _sql_names = ["IS_NAN", "ISNAN"]

key = 'isnan'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class FormatJson(Expression): View Source

    4495class FormatJson(Expression):
    4496    pass

key = 'formatjson'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class JSONKeyValue(Expression): View Source

    4499class JSONKeyValue(Expression):
    4500    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'jsonkeyvalue'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class JSONObject(Func): View Source

    4503class JSONObject(Func):
    4504    arg_types = {
    4505        "expressions": False,
    4506        "null_handling": False,
    4507        "unique_keys": False,
    4508        "return_type": False,
    4509        "encoding": False,
    4510    }

arg_types = {'expressions': False, 'null_handling': False, 'unique_keys': False, 'return_type': False, 'encoding': False}
key = 'jsonobject'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class JSONArray(Func): View Source

    4514class JSONArray(Func):
    4515    arg_types = {
    4516        "expressions": True,
    4517        "null_handling": False,
    4518        "return_type": False,
    4519        "strict": False,
    4520    }

arg_types = {'expressions': True, 'null_handling': False, 'return_type': False, 'strict': False}
key = 'jsonarray'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class JSONArrayAgg(Func): View Source

    4524class JSONArrayAgg(Func):
    4525    arg_types = {
    4526        "this": True,
    4527        "order": False,
    4528        "null_handling": False,
    4529        "return_type": False,
    4530        "strict": False,
    4531    }

arg_types = {'this': True, 'order': False, 'null_handling': False, 'return_type': False, 'strict': False}
key = 'jsonarrayagg'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class JSONColumnDef(Expression): View Source

    4536class JSONColumnDef(Expression):
    4537    arg_types = {"this": True, "kind": False, "path": False}

arg_types = {'this': True, 'kind': False, 'path': False}
key = 'jsoncolumndef'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class JSONTable(Func): View Source

    4541class JSONTable(Func):
    4542    arg_types = {
    4543        "this": True,
    4544        "expressions": True,
    4545        "path": False,
    4546        "error_handling": False,
    4547        "empty_handling": False,
    4548    }

arg_types = {'this': True, 'expressions': True, 'path': False, 'error_handling': False, 'empty_handling': False}
key = 'jsontable'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class OpenJSONColumnDef(Expression): View Source

    4551class OpenJSONColumnDef(Expression):
    4552    arg_types = {"this": True, "kind": True, "path": False, "as_json": False}

arg_types = {'this': True, 'kind': True, 'path': False, 'as_json': False}
key = 'openjsoncolumndef'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class OpenJSON(Func): View Source

    4555class OpenJSON(Func):
    4556    arg_types = {"this": True, "path": False, "expressions": False}

arg_types = {'this': True, 'path': False, 'expressions': False}
key = 'openjson'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class JSONBContains(Binary): View Source

    4559class JSONBContains(Binary):
    4560    _sql_names = ["JSONB_CONTAINS"]

key = 'jsonbcontains'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class JSONExtract(Binary, Func): View Source

    4563class JSONExtract(Binary, Func):
    4564    _sql_names = ["JSON_EXTRACT"]

key = 'jsonextract'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class JSONExtractScalar(JSONExtract): View Source

    4567class JSONExtractScalar(JSONExtract):
    4568    _sql_names = ["JSON_EXTRACT_SCALAR"]

key = 'jsonextractscalar'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class JSONBExtract(JSONExtract): View Source

    4571class JSONBExtract(JSONExtract):
    4572    _sql_names = ["JSONB_EXTRACT"]

key = 'jsonbextract'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class JSONBExtractScalar(JSONExtract): View Source

    4575class JSONBExtractScalar(JSONExtract):
    4576    _sql_names = ["JSONB_EXTRACT_SCALAR"]

key = 'jsonbextractscalar'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class JSONFormat(Func): View Source

    4579class JSONFormat(Func):
    4580    arg_types = {"this": False, "options": False}
    4581    _sql_names = ["JSON_FORMAT"]

arg_types = {'this': False, 'options': False}
key = 'jsonformat'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class JSONArrayContains(Binary, Predicate, Func): View Source

    4585class JSONArrayContains(Binary, Predicate, Func):
    4586    _sql_names = ["JSON_ARRAY_CONTAINS"]

key = 'jsonarraycontains'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Least(Func): View Source

    4589class Least(Func):
    4590    arg_types = {"this": True, "expressions": False}
    4591    is_var_len_args = True

arg_types = {'this': True, 'expressions': False}
is_var_len_args = True
key = 'least'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Left(Func): View Source

    4594class Left(Func):
    4595    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'left'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Right(Func): View Source

    4598class Right(Func):
    4599    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'right'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Length(Func): View Source

    4602class Length(Func):
    4603    _sql_names = ["LENGTH", "LEN"]

key = 'length'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Levenshtein(Func): View Source

    4606class Levenshtein(Func):
    4607    arg_types = {
    4608        "this": True,
    4609        "expression": False,
    4610        "ins_cost": False,
    4611        "del_cost": False,
    4612        "sub_cost": False,
    4613    }

arg_types = {'this': True, 'expression': False, 'ins_cost': False, 'del_cost': False, 'sub_cost': False}
key = 'levenshtein'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Ln(Func): View Source

    4616class Ln(Func):
    4617    pass

key = 'ln'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Log(Func): View Source

    4620class Log(Func):
    4621    arg_types = {"this": True, "expression": False}

arg_types = {'this': True, 'expression': False}
key = 'log'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Log2(Func): View Source

    4624class Log2(Func):
    4625    pass

key = 'log2'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Log10(Func): View Source

    4628class Log10(Func):
    4629    pass

key = 'log10'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class LogicalOr(AggFunc): View Source

    4632class LogicalOr(AggFunc):
    4633    _sql_names = ["LOGICAL_OR", "BOOL_OR", "BOOLOR_AGG"]

key = 'logicalor'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class LogicalAnd(AggFunc): View Source

    4636class LogicalAnd(AggFunc):
    4637    _sql_names = ["LOGICAL_AND", "BOOL_AND", "BOOLAND_AGG"]

key = 'logicaland'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Lower(Func): View Source

    4640class Lower(Func):
    4641    _sql_names = ["LOWER", "LCASE"]

key = 'lower'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Map(Func): View Source

    4644class Map(Func):
    4645    arg_types = {"keys": False, "values": False}

arg_types = {'keys': False, 'values': False}
key = 'map'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class MapFromEntries(Func): View Source

    4648class MapFromEntries(Func):
    4649    pass

key = 'mapfromentries'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StarMap(Func): View Source

    4652class StarMap(Func):
    4653    pass

key = 'starmap'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class VarMap(Func): View Source

    4656class VarMap(Func):
    4657    arg_types = {"keys": True, "values": True}
    4658    is_var_len_args = True
    4659
    4660    @property
    4661    def keys(self) -> t.List[Expression]:
    4662        return self.args["keys"].expressions
    4663
    4664    @property
    4665    def values(self) -> t.List[Expression]:
    4666        return self.args["values"].expressions

arg_types = {'keys': True, 'values': True}
is_var_len_args = True
keys: List[Expression]
values: List[Expression]
key = 'varmap'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class MatchAgainst(Func): View Source

    4670class MatchAgainst(Func):
    4671    arg_types = {"this": True, "expressions": True, "modifier": False}

arg_types = {'this': True, 'expressions': True, 'modifier': False}
key = 'matchagainst'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Max(AggFunc): View Source

    4674class Max(AggFunc):
    4675    arg_types = {"this": True, "expressions": False}
    4676    is_var_len_args = True

arg_types = {'this': True, 'expressions': False}
is_var_len_args = True
key = 'max'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class MD5(Func): View Source

    4679class MD5(Func):
    4680    _sql_names = ["MD5"]

key = 'md5'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class MD5Digest(Func): View Source

    4684class MD5Digest(Func):
    4685    _sql_names = ["MD5_DIGEST"]

key = 'md5digest'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Min(AggFunc): View Source

    4688class Min(AggFunc):
    4689    arg_types = {"this": True, "expressions": False}
    4690    is_var_len_args = True

arg_types = {'this': True, 'expressions': False}
is_var_len_args = True
key = 'min'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Month(Func): View Source

    4693class Month(Func):
    4694    pass

key = 'month'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Nvl2(Func): View Source

    4697class Nvl2(Func):
    4698    arg_types = {"this": True, "true": True, "false": False}

arg_types = {'this': True, 'true': True, 'false': False}
key = 'nvl2'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Posexplode(Func): View Source

    4701class Posexplode(Func):
    4702    pass

key = 'posexplode'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Pow(Binary, Func): View Source

    4705class Pow(Binary, Func):
    4706    _sql_names = ["POWER", "POW"]

key = 'pow'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  arg_types
  left
  right
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class PercentileCont(AggFunc): View Source

    4709class PercentileCont(AggFunc):
    4710    arg_types = {"this": True, "expression": False}

arg_types = {'this': True, 'expression': False}
key = 'percentilecont'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class PercentileDisc(AggFunc): View Source

    4713class PercentileDisc(AggFunc):
    4714    arg_types = {"this": True, "expression": False}

arg_types = {'this': True, 'expression': False}
key = 'percentiledisc'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Quantile(AggFunc): View Source

    4717class Quantile(AggFunc):
    4718    arg_types = {"this": True, "quantile": True}

arg_types = {'this': True, 'quantile': True}
key = 'quantile'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ApproxQuantile(Quantile): View Source

    4721class ApproxQuantile(Quantile):
    4722    arg_types = {"this": True, "quantile": True, "accuracy": False, "weight": False}

arg_types = {'this': True, 'quantile': True, 'accuracy': False, 'weight': False}
key = 'approxquantile'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class RangeN(Func): View Source

    4725class RangeN(Func):
    4726    arg_types = {"this": True, "expressions": True, "each": False}

arg_types = {'this': True, 'expressions': True, 'each': False}
key = 'rangen'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class ReadCSV(Func): View Source

    4729class ReadCSV(Func):
    4730    _sql_names = ["READ_CSV"]
    4731    is_var_len_args = True
    4732    arg_types = {"this": True, "expressions": False}

is_var_len_args = True
arg_types = {'this': True, 'expressions': False}
key = 'readcsv'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Reduce(Func): View Source

    4735class Reduce(Func):
    4736    arg_types = {"this": True, "initial": True, "merge": True, "finish": False}

arg_types = {'this': True, 'initial': True, 'merge': True, 'finish': False}
key = 'reduce'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class RegexpExtract(Func): View Source

    4739class RegexpExtract(Func):
    4740    arg_types = {
    4741        "this": True,
    4742        "expression": True,
    4743        "position": False,
    4744        "occurrence": False,
    4745        "parameters": False,
    4746        "group": False,
    4747    }

arg_types = {'this': True, 'expression': True, 'position': False, 'occurrence': False, 'parameters': False, 'group': False}
key = 'regexpextract'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class RegexpReplace(Func): View Source

    4750class RegexpReplace(Func):
    4751    arg_types = {
    4752        "this": True,
    4753        "expression": True,
    4754        "replacement": True,
    4755        "position": False,
    4756        "occurrence": False,
    4757        "parameters": False,
    4758    }

arg_types = {'this': True, 'expression': True, 'replacement': True, 'position': False, 'occurrence': False, 'parameters': False}
key = 'regexpreplace'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class RegexpLike(Binary, Func): View Source

    4761class RegexpLike(Binary, Func):
    4762    arg_types = {"this": True, "expression": True, "flag": False}

arg_types = {'this': True, 'expression': True, 'flag': False}
key = 'regexplike'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Binary
  left
  right
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class RegexpILike(Func): View Source

    4765class RegexpILike(Func):
    4766    arg_types = {"this": True, "expression": True, "flag": False}

arg_types = {'this': True, 'expression': True, 'flag': False}
key = 'regexpilike'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class RegexpSplit(Func): View Source

    4771class RegexpSplit(Func):
    4772    arg_types = {"this": True, "expression": True, "limit": False}

arg_types = {'this': True, 'expression': True, 'limit': False}
key = 'regexpsplit'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Repeat(Func): View Source

    4775class Repeat(Func):
    4776    arg_types = {"this": True, "times": True}

arg_types = {'this': True, 'times': True}
key = 'repeat'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Round(Func): View Source

    4779class Round(Func):
    4780    arg_types = {"this": True, "decimals": False}

arg_types = {'this': True, 'decimals': False}
key = 'round'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class RowNumber(Func): View Source

    4783class RowNumber(Func):
    4784    arg_types: t.Dict[str, t.Any] = {}

arg_types: Dict[str, Any] = {}
key = 'rownumber'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class SafeDivide(Func): View Source

    4787class SafeDivide(Func):
    4788    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'safedivide'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class SetAgg(AggFunc): View Source

    4791class SetAgg(AggFunc):
    4792    pass

key = 'setagg'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class SHA(Func): View Source

    4795class SHA(Func):
    4796    _sql_names = ["SHA", "SHA1"]

key = 'sha'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class SHA2(Func): View Source

    4799class SHA2(Func):
    4800    _sql_names = ["SHA2"]
    4801    arg_types = {"this": True, "length": False}

arg_types = {'this': True, 'length': False}
key = 'sha2'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class SortArray(Func): View Source

    4804class SortArray(Func):
    4805    arg_types = {"this": True, "asc": False}

arg_types = {'this': True, 'asc': False}
key = 'sortarray'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Split(Func): View Source

    4808class Split(Func):
    4809    arg_types = {"this": True, "expression": True, "limit": False}

arg_types = {'this': True, 'expression': True, 'limit': False}
key = 'split'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Substring(Func): View Source

    4814class Substring(Func):
    4815    arg_types = {"this": True, "start": False, "length": False}

arg_types = {'this': True, 'start': False, 'length': False}
key = 'substring'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StandardHash(Func): View Source

    4818class StandardHash(Func):
    4819    arg_types = {"this": True, "expression": False}

arg_types = {'this': True, 'expression': False}
key = 'standardhash'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StartsWith(Func): View Source

    4822class StartsWith(Func):
    4823    _sql_names = ["STARTS_WITH", "STARTSWITH"]
    4824    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'startswith'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StrPosition(Func): View Source

    4827class StrPosition(Func):
    4828    arg_types = {
    4829        "this": True,
    4830        "substr": True,
    4831        "position": False,
    4832        "instance": False,
    4833    }

arg_types = {'this': True, 'substr': True, 'position': False, 'instance': False}
key = 'strposition'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StrToDate(Func): View Source

    4836class StrToDate(Func):
    4837    arg_types = {"this": True, "format": True}

arg_types = {'this': True, 'format': True}
key = 'strtodate'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StrToTime(Func): View Source

    4840class StrToTime(Func):
    4841    arg_types = {"this": True, "format": True, "zone": False}

arg_types = {'this': True, 'format': True, 'zone': False}
key = 'strtotime'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StrToUnix(Func): View Source

    4846class StrToUnix(Func):
    4847    arg_types = {"this": False, "format": False}

arg_types = {'this': False, 'format': False}
key = 'strtounix'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StrToMap(Func): View Source

    4852class StrToMap(Func):
    4853    arg_types = {
    4854        "this": True,
    4855        "pair_delim": False,
    4856        "key_value_delim": False,
    4857        "duplicate_resolution_callback": False,
    4858    }

arg_types = {'this': True, 'pair_delim': False, 'key_value_delim': False, 'duplicate_resolution_callback': False}
key = 'strtomap'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class NumberToStr(Func): View Source

    4861class NumberToStr(Func):
    4862    arg_types = {"this": True, "format": True, "culture": False}

arg_types = {'this': True, 'format': True, 'culture': False}
key = 'numbertostr'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class FromBase(Func): View Source

    4865class FromBase(Func):
    4866    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'frombase'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Struct(Func): View Source

    4869class Struct(Func):
    4870    arg_types = {"expressions": True}
    4871    is_var_len_args = True

arg_types = {'expressions': True}
is_var_len_args = True
key = 'struct'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StructExtract(Func): View Source

    4874class StructExtract(Func):
    4875    arg_types = {"this": True, "expression": True}

arg_types = {'this': True, 'expression': True}
key = 'structextract'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Stuff(Func): View Source

    4880class Stuff(Func):
    4881    _sql_names = ["STUFF", "INSERT"]
    4882    arg_types = {"this": True, "start": True, "length": True, "expression": True}

arg_types = {'this': True, 'start': True, 'length': True, 'expression': True}
key = 'stuff'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Sum(AggFunc): View Source

    4885class Sum(AggFunc):
    4886    pass

key = 'sum'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Sqrt(Func): View Source

    4889class Sqrt(Func):
    4890    pass

key = 'sqrt'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Stddev(AggFunc): View Source

    4893class Stddev(AggFunc):
    4894    pass

key = 'stddev'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StddevPop(AggFunc): View Source

    4897class StddevPop(AggFunc):
    4898    pass

key = 'stddevpop'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class StddevSamp(AggFunc): View Source

    4901class StddevSamp(AggFunc):
    4902    pass

key = 'stddevsamp'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TimeToStr(Func): View Source

    4905class TimeToStr(Func):
    4906    arg_types = {"this": True, "format": True, "culture": False}

arg_types = {'this': True, 'format': True, 'culture': False}
key = 'timetostr'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TimeToTimeStr(Func): View Source

    4909class TimeToTimeStr(Func):
    4910    pass

key = 'timetotimestr'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TimeToUnix(Func): View Source

    4913class TimeToUnix(Func):
    4914    pass

key = 'timetounix'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TimeStrToDate(Func): View Source

    4917class TimeStrToDate(Func):
    4918    pass

key = 'timestrtodate'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TimeStrToTime(Func): View Source

    4921class TimeStrToTime(Func):
    4922    pass

key = 'timestrtotime'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TimeStrToUnix(Func): View Source

    4925class TimeStrToUnix(Func):
    4926    pass

key = 'timestrtounix'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Trim(Func): View Source

    4929class Trim(Func):
    4930    arg_types = {
    4931        "this": True,
    4932        "expression": False,
    4933        "position": False,
    4934        "collation": False,
    4935    }

arg_types = {'this': True, 'expression': False, 'position': False, 'collation': False}
key = 'trim'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TsOrDsAdd(Func, TimeUnit): View Source

    4938class TsOrDsAdd(Func, TimeUnit):
    4939    arg_types = {"this": True, "expression": True, "unit": False}

arg_types = {'this': True, 'expression': True, 'unit': False}
key = 'tsordsadd'

##### Inherited Members

TimeUnit
  TimeUnit
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike
Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class TsOrDsToDateStr(Func): View Source

    4942class TsOrDsToDateStr(Func):
    4943    pass

key = 'tsordstodatestr'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TsOrDsToDate(Func): View Source

    4946class TsOrDsToDate(Func):
    4947    arg_types = {"this": True, "format": False}

arg_types = {'this': True, 'format': False}
key = 'tsordstodate'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class TsOrDiToDi(Func): View Source

    4950class TsOrDiToDi(Func):
    4951    pass

key = 'tsorditodi'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Unhex(Func): View Source

    4954class Unhex(Func):
    4955    pass

key = 'unhex'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class UnixToStr(Func): View Source

    4958class UnixToStr(Func):
    4959    arg_types = {"this": True, "format": False}

arg_types = {'this': True, 'format': False}
key = 'unixtostr'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class UnixToTime(Func): View Source

    4964class UnixToTime(Func):
    4965    arg_types = {"this": True, "scale": False, "zone": False, "hours": False, "minutes": False}
    4966
    4967    SECONDS = Literal.string("seconds")
    4968    MILLIS = Literal.string("millis")
    4969    MICROS = Literal.string("micros")

arg_types = {'this': True, 'scale': False, 'zone': False, 'hours': False, 'minutes': False}
SECONDS = (LITERAL this: seconds, is_string: True)
MILLIS = (LITERAL this: millis, is_string: True)
MICROS = (LITERAL this: micros, is_string: True)
key = 'unixtotime'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class UnixToTimeStr(Func): View Source

    4972class UnixToTimeStr(Func):
    4973    pass

key = 'unixtotimestr'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Upper(Func): View Source

    4976class Upper(Func):
    4977    _sql_names = ["UPPER", "UCASE"]

key = 'upper'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Variance(AggFunc): View Source

    4980class Variance(AggFunc):
    4981    _sql_names = ["VARIANCE", "VARIANCE_SAMP", "VAR_SAMP"]

key = 'variance'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class VariancePop(AggFunc): View Source

    4984class VariancePop(AggFunc):
    4985    _sql_names = ["VARIANCE_POP", "VAR_POP"]

key = 'variancepop'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Week(Func): View Source

    4988class Week(Func):
    4989    arg_types = {"this": True, "mode": False}

arg_types = {'this': True, 'mode': False}
key = 'week'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class XMLTable(Func): View Source

    4992class XMLTable(Func):
    4993    arg_types = {"this": True, "passing": False, "columns": False, "by_ref": False}

arg_types = {'this': True, 'passing': False, 'columns': False, 'by_ref': False}
key = 'xmltable'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Year(Func): View Source

    4996class Year(Func):
    4997    pass

key = 'year'

##### Inherited Members

Expression
  Expression
  arg_types
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class Use(Expression): View Source

    5000class Use(Expression):
    5001    arg_types = {"this": True, "kind": False}

arg_types = {'this': True, 'kind': False}
key = 'use'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class Merge(Expression): View Source

    5004class Merge(Expression):
    5005    arg_types = {"this": True, "using": True, "on": True, "expressions": True}

arg_types = {'this': True, 'using': True, 'on': True, 'expressions': True}
key = 'merge'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load

class When(Func): View Source

    5008class When(Func):
    5009    arg_types = {"matched": True, "source": False, "condition": False, "then": True}

arg_types = {'matched': True, 'source': False, 'condition': False, 'then': True}
key = 'when'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

class NextValueFor(Func): View Source

    5014class NextValueFor(Func):
    5015    arg_types = {"this": True, "order": False}

arg_types = {'this': True, 'order': False}
key = 'nextvaluefor'

##### Inherited Members

Expression
  Expression
  args
  parent
  arg_key
  comments
  hashable_args
  this
  expression
  expressions
  text
  is_string
  is_number
  is_int
  is_star
  alias
  alias_column_names
  name
  alias_or_name
  output_name
  type
  meta
  copy
  add_comments
  append
  set
  depth
  iter_expressions
  find
  find_all
  find_ancestor
  parent_select
  same_parent
  root
  walk
  dfs
  bfs
  unnest
  unalias
  unnest_operands
  flatten
  sql
  transform
  replace
  pop
  assert_is
  error_messages
  dump
  load
Func
  is_var_len_args
  from_arg_list
  sql_names
  sql_name
  default_parser_mappings
Condition
  and_
  or_
  not_
  as_
  isin
  between
  is_
  like
  ilike
  eq
  neq
  rlike

ALL_FUNCTIONS = [<class 'Abs'>, <class 'AnyValue'>, <class 'ApproxDistinct'>, <class 'ApproxQuantile'>, <class 'Array'>, <class 'ArrayAgg'>, <class 'ArrayAll'>, <class 'ArrayAny'>, <class 'ArrayConcat'>, <class 'ArrayContains'>, <class 'ArrayFilter'>, <class 'ArrayJoin'>, <class 'ArraySize'>, <class 'ArraySort'>, <class 'ArraySum'>, <class 'ArrayUnionAgg'>, <class 'Avg'>, <class 'Case'>, <class 'Cast'>, <class 'CastToStrType'>, <class 'Ceil'>, <class 'Coalesce'>, <class 'Concat'>, <class 'ConcatWs'>, <class 'Count'>, <class 'CountIf'>, <class 'CurrentDate'>, <class 'CurrentDatetime'>, <class 'CurrentTime'>, <class 'CurrentTimestamp'>, <class 'CurrentUser'>, <class 'Date'>, <class 'DateAdd'>, <class 'DateDiff'>, <class 'DateFromParts'>, <class 'DateStrToDate'>, <class 'DateSub'>, <class 'DateToDateStr'>, <class 'DateToDi'>, <class 'DateTrunc'>, <class 'DatetimeAdd'>, <class 'DatetimeDiff'>, <class 'DatetimeSub'>, <class 'DatetimeTrunc'>, <class 'Day'>, <class 'DayOfMonth'>, <class 'DayOfWeek'>, <class 'DayOfYear'>, <class 'Decode'>, <class 'DiToDate'>, <class 'Encode'>, <class 'Exp'>, <class 'Explode'>, <class 'Extract'>, <class 'First'>, <class 'Floor'>, <class 'FromBase'>, <class 'FromBase64'>, <class 'GenerateSeries'>, <class 'Greatest'>, <class 'GroupConcat'>, <class 'Hex'>, <class 'Hll'>, <class 'If'>, <class 'Initcap'>, <class 'IsNan'>, <class 'JSONArray'>, <class 'JSONArrayAgg'>, <class 'JSONArrayContains'>, <class 'JSONBExtract'>, <class 'JSONBExtractScalar'>, <class 'JSONExtract'>, <class 'JSONExtractScalar'>, <class 'JSONFormat'>, <class 'JSONObject'>, <class 'JSONTable'>, <class 'Last'>, <class 'LastDateOfMonth'>, <class 'Least'>, <class 'Left'>, <class 'Length'>, <class 'Levenshtein'>, <class 'Ln'>, <class 'Log'>, <class 'Log10'>, <class 'Log2'>, <class 'LogicalAnd'>, <class 'LogicalOr'>, <class 'Lower'>, <class 'MD5'>, <class 'MD5Digest'>, <class 'Map'>, <class 'MapFromEntries'>, <class 'MatchAgainst'>, <class 'Max'>, <class 'Min'>, <class 'Month'>, <class 'MonthsBetween'>, <class 'NextValueFor'>, <class 'NumberToStr'>, <class 'Nvl2'>, <class 'OpenJSON'>, <class 'ParameterizedAgg'>, <class 'PercentileCont'>, <class 'PercentileDisc'>, <class 'Posexplode'>, <class 'Pow'>, <class 'Quantile'>, <class 'RangeN'>, <class 'ReadCSV'>, <class 'Reduce'>, <class 'RegexpExtract'>, <class 'RegexpILike'>, <class 'RegexpLike'>, <class 'RegexpReplace'>, <class 'RegexpSplit'>, <class 'Repeat'>, <class 'Right'>, <class 'Round'>, <class 'RowNumber'>, <class 'SHA'>, <class 'SHA2'>, <class 'SafeConcat'>, <class 'SafeDivide'>, <class 'SetAgg'>, <class 'SortArray'>, <class 'Split'>, <class 'Sqrt'>, <class 'StandardHash'>, <class 'StarMap'>, <class 'StartsWith'>, <class 'Stddev'>, <class 'StddevPop'>, <class 'StddevSamp'>, <class 'StrPosition'>, <class 'StrToDate'>, <class 'StrToMap'>, <class 'StrToTime'>, <class 'StrToUnix'>, <class 'Struct'>, <class 'StructExtract'>, <class 'Stuff'>, <class 'Substring'>, <class 'Sum'>, <class 'TimeAdd'>, <class 'TimeDiff'>, <class 'TimeStrToDate'>, <class 'TimeStrToTime'>, <class 'TimeStrToUnix'>, <class 'TimeSub'>, <class 'TimeToStr'>, <class 'TimeToTimeStr'>, <class 'TimeToUnix'>, <class 'TimeTrunc'>, <class 'TimestampAdd'>, <class 'TimestampDiff'>, <class 'TimestampSub'>, <class 'TimestampTrunc'>, <class 'ToBase64'>, <class 'ToChar'>, <class 'Transform'>, <class 'Trim'>, <class 'TryCast'>, <class 'TsOrDiToDi'>, <class 'TsOrDsAdd'>, <class 'TsOrDsToDate'>, <class 'TsOrDsToDateStr'>, <class 'Unhex'>, <class 'UnixToStr'>, <class 'UnixToTime'>, <class 'UnixToTimeStr'>, <class 'Upper'>, <class 'VarMap'>, <class 'Variance'>, <class 'VariancePop'>, <class 'Week'>, <class 'WeekOfYear'>, <class 'When'>, <class 'XMLTable'>, <class 'Xor'>, <class 'Year'>]
def maybe_parse( sql_or_expression: Union[str, Expression], *, into: Union[str, Type[Expression], Collection[Union[str, Type[Expression]]], NoneType] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, prefix: Optional[str] = None, copy: bool = False, **opts) -> Expression: View Source

    5052def maybe_parse(
    5053    sql_or_expression: ExpOrStr,
    5054    *,
    5055    into: t.Optional[IntoType] = None,
    5056    dialect: DialectType = None,
    5057    prefix: t.Optional[str] = None,
    5058    copy: bool = False,
    5059    **opts,
    5060) -> Expression:
    5061    """Gracefully handle a possible string or expression.
    5062
    5063    Example:
    5064        >>> maybe_parse("1")
    5065        (LITERAL this: 1, is_string: False)
    5066        >>> maybe_parse(to_identifier("x"))
    5067        (IDENTIFIER this: x, quoted: False)
    5068
    5069    Args:
    5070        sql_or_expression: the SQL code string or an expression
    5071        into: the SQLGlot Expression to parse into
    5072        dialect: the dialect used to parse the input expressions (in the case that an
    5073            input expression is a SQL string).
    5074        prefix: a string to prefix the sql with before it gets parsed
    5075            (automatically includes a space)
    5076        copy: whether or not to copy the expression.
    5077        **opts: other options to use to parse the input expressions (again, in the case
    5078            that an input expression is a SQL string).
    5079
    5080    Returns:
    5081        Expression: the parsed or given expression.
    5082    """
    5083    if isinstance(sql_or_expression, Expression):
    5084        if copy:
    5085            return sql_or_expression.copy()
    5086        return sql_or_expression
    5087
    5088    if sql_or_expression is None:
    5089        raise ParseError(f"SQL cannot be None")
    5090
    5091    import sqlglot
    5092
    5093    sql = str(sql_or_expression)
    5094    if prefix:
    5095        sql = f"{prefix} {sql}"
    5096
    5097    return sqlglot.parse_one(sql, read=dialect, into=into, **opts)

Gracefully handle a possible string or expression.

###### Example:

>     >>> maybe_parse("1")
>     (LITERAL this: 1, is_string: False)
>     >>> maybe_parse(to_identifier("x"))
>     (IDENTIFIER this: x, quoted: False)

###### Arguments:

- sql_or_expression: the SQL code string or an expression
- into: the SQLGlot Expression to parse into
- dialect: the dialect used to parse the input expressions (in the case that an input expression is a SQL string).
- prefix: a string to prefix the sql with before it gets parsed (automatically includes a space)
- copy: whether or not to copy the expression.
- **opts: other options to use to parse the input expressions (again, in the case that an input expression is a SQL string).

###### Returns:

> Expression: the parsed or given expression.

def maybe_copy(instance, copy=True): View Source

    5110def maybe_copy(instance, copy=True):
    5111    return instance.copy() if copy and instance else instance

def union( left: Union[str, Expression], right: Union[str, Expression], distinct: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Union: View Source

    5291def union(
    5292    left: ExpOrStr, right: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    5293) -> Union:
    5294    """
    5295    Initializes a syntax tree from one UNION expression.
    5296
    5297    Example:
    5298        >>> union("SELECT * FROM foo", "SELECT * FROM bla").sql()
    5299        'SELECT * FROM foo UNION SELECT * FROM bla'
    5300
    5301    Args:
    5302        left: the SQL code string corresponding to the left-hand side.
    5303            If an `Expression` instance is passed, it will be used as-is.
    5304        right: the SQL code string corresponding to the right-hand side.
    5305            If an `Expression` instance is passed, it will be used as-is.
    5306        distinct: set the DISTINCT flag if and only if this is true.
    5307        dialect: the dialect used to parse the input expression.
    5308        opts: other options to use to parse the input expressions.
    5309
    5310    Returns:
    5311        The new Union instance.
    5312    """
    5313    left = maybe_parse(sql_or_expression=left, dialect=dialect, **opts)
    5314    right = maybe_parse(sql_or_expression=right, dialect=dialect, **opts)
    5315
    5316    return Union(this=left, expression=right, distinct=distinct)

Initializes a syntax tree from one UNION expression.

###### Example:

>     >>> union("SELECT * FROM foo", "SELECT * FROM bla").sql()
>     'SELECT * FROM foo UNION SELECT * FROM bla'

###### Arguments:

- left: the SQL code string corresponding to the left-hand side. If an `Expression` instance is passed, it will be used as-is.
- right: the SQL code string corresponding to the right-hand side. If an `Expression` instance is passed, it will be used as-is.
- distinct: set the DISTINCT flag if and only if this is true.
- dialect: the dialect used to parse the input expression.
- opts: other options to use to parse the input expressions.

###### Returns:

> The new Union instance.

def intersect( left: Union[str, Expression], right: Union[str, Expression], distinct: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Intersect: View Source

    5319def intersect(
    5320    left: ExpOrStr, right: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    5321) -> Intersect:
    5322    """
    5323    Initializes a syntax tree from one INTERSECT expression.
    5324
    5325    Example:
    5326        >>> intersect("SELECT * FROM foo", "SELECT * FROM bla").sql()
    5327        'SELECT * FROM foo INTERSECT SELECT * FROM bla'
    5328
    5329    Args:
    5330        left: the SQL code string corresponding to the left-hand side.
    5331            If an `Expression` instance is passed, it will be used as-is.
    5332        right: the SQL code string corresponding to the right-hand side.
    5333            If an `Expression` instance is passed, it will be used as-is.
    5334        distinct: set the DISTINCT flag if and only if this is true.
    5335        dialect: the dialect used to parse the input expression.
    5336        opts: other options to use to parse the input expressions.
    5337
    5338    Returns:
    5339        The new Intersect instance.
    5340    """
    5341    left = maybe_parse(sql_or_expression=left, dialect=dialect, **opts)
    5342    right = maybe_parse(sql_or_expression=right, dialect=dialect, **opts)
    5343
    5344    return Intersect(this=left, expression=right, distinct=distinct)

Initializes a syntax tree from one INTERSECT expression.

###### Example:

>     >>> intersect("SELECT * FROM foo", "SELECT * FROM bla").sql()
>     'SELECT * FROM foo INTERSECT SELECT * FROM bla'

###### Arguments:

- left: the SQL code string corresponding to the left-hand side. If an `Expression` instance is passed, it will be used as-is.
- right: the SQL code string corresponding to the right-hand side. If an `Expression` instance is passed, it will be used as-is.
- distinct: set the DISTINCT flag if and only if this is true.
- dialect: the dialect used to parse the input expression.
- opts: other options to use to parse the input expressions.

###### Returns:

> The new Intersect instance.

def except_( left: Union[str, Expression], right: Union[str, Expression], distinct: bool = True, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Except: View Source

    5347def except_(
    5348    left: ExpOrStr, right: ExpOrStr, distinct: bool = True, dialect: DialectType = None, **opts
    5349) -> Except:
    5350    """
    5351    Initializes a syntax tree from one EXCEPT expression.
    5352
    5353    Example:
    5354        >>> except_("SELECT * FROM foo", "SELECT * FROM bla").sql()
    5355        'SELECT * FROM foo EXCEPT SELECT * FROM bla'
    5356
    5357    Args:
    5358        left: the SQL code string corresponding to the left-hand side.
    5359            If an `Expression` instance is passed, it will be used as-is.
    5360        right: the SQL code string corresponding to the right-hand side.
    5361            If an `Expression` instance is passed, it will be used as-is.
    5362        distinct: set the DISTINCT flag if and only if this is true.
    5363        dialect: the dialect used to parse the input expression.
    5364        opts: other options to use to parse the input expressions.
    5365
    5366    Returns:
    5367        The new Except instance.
    5368    """
    5369    left = maybe_parse(sql_or_expression=left, dialect=dialect, **opts)
    5370    right = maybe_parse(sql_or_expression=right, dialect=dialect, **opts)
    5371
    5372    return Except(this=left, expression=right, distinct=distinct)

Initializes a syntax tree from one EXCEPT expression.

###### Example:

>     >>> except_("SELECT * FROM foo", "SELECT * FROM bla").sql()
>     'SELECT * FROM foo EXCEPT SELECT * FROM bla'

###### Arguments:

- left: the SQL code string corresponding to the left-hand side. If an `Expression` instance is passed, it will be used as-is.
- right: the SQL code string corresponding to the right-hand side. If an `Expression` instance is passed, it will be used as-is.
- distinct: set the DISTINCT flag if and only if this is true.
- dialect: the dialect used to parse the input expression.
- opts: other options to use to parse the input expressions.

###### Returns:

> The new Except instance.

def select( *expressions: Union[str, Expression], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Select: View Source

    5375def select(*expressions: ExpOrStr, dialect: DialectType = None, **opts) -> Select:
    5376    """
    5377    Initializes a syntax tree from one or multiple SELECT expressions.
    5378
    5379    Example:
    5380        >>> select("col1", "col2").from_("tbl").sql()
    5381        'SELECT col1, col2 FROM tbl'
    5382
    5383    Args:
    5384        *expressions: the SQL code string to parse as the expressions of a
    5385            SELECT statement. If an Expression instance is passed, this is used as-is.
    5386        dialect: the dialect used to parse the input expressions (in the case that an
    5387            input expression is a SQL string).
    5388        **opts: other options to use to parse the input expressions (again, in the case
    5389            that an input expression is a SQL string).
    5390
    5391    Returns:
    5392        Select: the syntax tree for the SELECT statement.
    5393    """
    5394    return Select().select(*expressions, dialect=dialect, **opts)

Initializes a syntax tree from one or multiple SELECT expressions.

###### Example:

>     >>> select("col1", "col2").from_("tbl").sql()
>     'SELECT col1, col2 FROM tbl'

###### Arguments:

- *expressions: the SQL code string to parse as the expressions of a SELECT statement. If an Expression instance is passed, this is used as-is.
- dialect: the dialect used to parse the input expressions (in the case that an input expression is a SQL string).
- **opts: other options to use to parse the input expressions (again, in the case that an input expression is a SQL string).

###### Returns:

> Select: the syntax tree for the SELECT statement.

def from_( expression: Union[str, Expression], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Select: View Source

    5397def from_(expression: ExpOrStr, dialect: DialectType = None, **opts) -> Select:
    5398    """
    5399    Initializes a syntax tree from a FROM expression.
    5400
    5401    Example:
    5402        >>> from_("tbl").select("col1", "col2").sql()
    5403        'SELECT col1, col2 FROM tbl'
    5404
    5405    Args:
    5406        *expression: the SQL code string to parse as the FROM expressions of a
    5407            SELECT statement. If an Expression instance is passed, this is used as-is.
    5408        dialect: the dialect used to parse the input expression (in the case that the
    5409            input expression is a SQL string).
    5410        **opts: other options to use to parse the input expressions (again, in the case
    5411            that the input expression is a SQL string).
    5412
    5413    Returns:
    5414        Select: the syntax tree for the SELECT statement.
    5415    """
    5416    return Select().from_(expression, dialect=dialect, **opts)

Initializes a syntax tree from a FROM expression.

###### Example:

>     >>> from_("tbl").select("col1", "col2").sql()
>     'SELECT col1, col2 FROM tbl'

###### Arguments:

- *expression: the SQL code string to parse as the FROM expressions of a SELECT statement. If an Expression instance is passed, this is used as-is.
- dialect: the dialect used to parse the input expression (in the case that the input expression is a SQL string).
- **opts: other options to use to parse the input expressions (again, in the case that the input expression is a SQL string).

###### Returns:

> Select: the syntax tree for the SELECT statement.

def update( table: str | Table, properties: dict, where: Union[str, Expression, NoneType] = None, from_: Union[str, Expression, NoneType] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Update: View Source

    5419def update(
    5420    table: str | Table,
    5421    properties: dict,
    5422    where: t.Optional[ExpOrStr] = None,
    5423    from_: t.Optional[ExpOrStr] = None,
    5424    dialect: DialectType = None,
    5425    **opts,
    5426) -> Update:
    5427    """
    5428    Creates an update statement.
    5429
    5430    Example:
    5431        >>> update("my_table", {"x": 1, "y": "2", "z": None}, from_="baz", where="id > 1").sql()
    5432        "UPDATE my_table SET x = 1, y = '2', z = NULL FROM baz WHERE id > 1"
    5433
    5434    Args:
    5435        *properties: dictionary of properties to set which are
    5436            auto converted to sql objects eg None -> NULL
    5437        where: sql conditional parsed into a WHERE statement
    5438        from_: sql statement parsed into a FROM statement
    5439        dialect: the dialect used to parse the input expressions.
    5440        **opts: other options to use to parse the input expressions.
    5441
    5442    Returns:
    5443        Update: the syntax tree for the UPDATE statement.
    5444    """
    5445    update_expr = Update(this=maybe_parse(table, into=Table, dialect=dialect))
    5446    update_expr.set(
    5447        "expressions",
    5448        [
    5449            EQ(this=maybe_parse(k, dialect=dialect, **opts), expression=convert(v))
    5450            for k, v in properties.items()
    5451        ],
    5452    )
    5453    if from_:
    5454        update_expr.set(
    5455            "from",
    5456            maybe_parse(from_, into=From, dialect=dialect, prefix="FROM", **opts),
    5457        )
    5458    if isinstance(where, Condition):
    5459        where = Where(this=where)
    5460    if where:
    5461        update_expr.set(
    5462            "where",
    5463            maybe_parse(where, into=Where, dialect=dialect, prefix="WHERE", **opts),
    5464        )
    5465    return update_expr

Creates an update statement.

###### Example:

>     >>> update("my_table", {"x": 1, "y": "2", "z": None}, from_="baz", where="id > 1").sql()
>     "UPDATE my_table SET x = 1, y = '2', z = NULL FROM baz WHERE id > 1"

###### Arguments:

- *properties: dictionary of properties to set which are auto converted to sql objects eg None -> NULL
- where: sql conditional parsed into a WHERE statement
- from_: sql statement parsed into a FROM statement
- dialect: the dialect used to parse the input expressions.
- **opts: other options to use to parse the input expressions.

###### Returns:

> Update: the syntax tree for the UPDATE statement.

def delete( table: Union[str, Expression], where: Union[str, Expression, NoneType] = None, returning: Union[str, Expression, NoneType] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Delete: View Source

    5468def delete(
    5469    table: ExpOrStr,
    5470    where: t.Optional[ExpOrStr] = None,
    5471    returning: t.Optional[ExpOrStr] = None,
    5472    dialect: DialectType = None,
    5473    **opts,
    5474) -> Delete:
    5475    """
    5476    Builds a delete statement.
    5477
    5478    Example:
    5479        >>> delete("my_table", where="id > 1").sql()
    5480        'DELETE FROM my_table WHERE id > 1'
    5481
    5482    Args:
    5483        where: sql conditional parsed into a WHERE statement
    5484        returning: sql conditional parsed into a RETURNING statement
    5485        dialect: the dialect used to parse the input expressions.
    5486        **opts: other options to use to parse the input expressions.
    5487
    5488    Returns:
    5489        Delete: the syntax tree for the DELETE statement.
    5490    """
    5491    delete_expr = Delete().delete(table, dialect=dialect, copy=False, **opts)
    5492    if where:
    5493        delete_expr = delete_expr.where(where, dialect=dialect, copy=False, **opts)
    5494    if returning:
    5495        delete_expr = delete_expr.returning(returning, dialect=dialect, copy=False, **opts)
    5496    return delete_expr

Builds a delete statement.

###### Example:

>     >>> delete("my_table", where="id > 1").sql()
>     'DELETE FROM my_table WHERE id > 1'

###### Arguments:

- where: sql conditional parsed into a WHERE statement
- returning: sql conditional parsed into a RETURNING statement
- dialect: the dialect used to parse the input expressions.
- **opts: other options to use to parse the input expressions.

###### Returns:

> Delete: the syntax tree for the DELETE statement.

def insert( expression: Union[str, Expression], into: Union[str, Expression], columns: Optional[Sequence[Union[str, Expression]]] = None, overwrite: Optional[bool] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Insert: View Source

    5499def insert(
    5500    expression: ExpOrStr,
    5501    into: ExpOrStr,
    5502    columns: t.Optional[t.Sequence[ExpOrStr]] = None,
    5503    overwrite: t.Optional[bool] = None,
    5504    dialect: DialectType = None,
    5505    copy: bool = True,
    5506    **opts,
    5507) -> Insert:
    5508    """
    5509    Builds an INSERT statement.
    5510
    5511    Example:
    5512        >>> insert("VALUES (1, 2, 3)", "tbl").sql()
    5513        'INSERT INTO tbl VALUES (1, 2, 3)'
    5514
    5515    Args:
    5516        expression: the sql string or expression of the INSERT statement
    5517        into: the tbl to insert data to.
    5518        columns: optionally the table's column names.
    5519        overwrite: whether to INSERT OVERWRITE or not.
    5520        dialect: the dialect used to parse the input expressions.
    5521        copy: whether or not to copy the expression.
    5522        **opts: other options to use to parse the input expressions.
    5523
    5524    Returns:
    5525        Insert: the syntax tree for the INSERT statement.
    5526    """
    5527    expr = maybe_parse(expression, dialect=dialect, copy=copy, **opts)
    5528    this: Table | Schema = maybe_parse(into, into=Table, dialect=dialect, copy=copy, **opts)
    5529
    5530    if columns:
    5531        this = _apply_list_builder(
    5532            *columns,
    5533            instance=Schema(this=this),
    5534            arg="expressions",
    5535            into=Identifier,
    5536            copy=False,
    5537            dialect=dialect,
    5538            **opts,
    5539        )
    5540
    5541    return Insert(this=this, expression=expr, overwrite=overwrite)

Builds an INSERT statement.

###### Example:

>     >>> insert("VALUES (1, 2, 3)", "tbl").sql()
>     'INSERT INTO tbl VALUES (1, 2, 3)'

###### Arguments:

- expression: the sql string or expression of the INSERT statement
- into: the tbl to insert data to.
- columns: optionally the table's column names.
- overwrite: whether to INSERT OVERWRITE or not.
- dialect: the dialect used to parse the input expressions.
- copy: whether or not to copy the expression.
- **opts: other options to use to parse the input expressions.

###### Returns:

> Insert: the syntax tree for the INSERT statement.

def condition( expression: Union[str, Expression], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Condition: View Source

    5544def condition(
    5545    expression: ExpOrStr, dialect: DialectType = None, copy: bool = True, **opts
    5546) -> Condition:
    5547    """
    5548    Initialize a logical condition expression.
    5549
    5550    Example:
    5551        >>> condition("x=1").sql()
    5552        'x = 1'
    5553
    5554        This is helpful for composing larger logical syntax trees:
    5555        >>> where = condition("x=1")
    5556        >>> where = where.and_("y=1")
    5557        >>> Select().from_("tbl").select("*").where(where).sql()
    5558        'SELECT * FROM tbl WHERE x = 1 AND y = 1'
    5559
    5560    Args:
    5561        *expression: the SQL code string to parse.
    5562            If an Expression instance is passed, this is used as-is.
    5563        dialect: the dialect used to parse the input expression (in the case that the
    5564            input expression is a SQL string).
    5565        copy: Whether or not to copy `expression` (only applies to expressions).
    5566        **opts: other options to use to parse the input expressions (again, in the case
    5567            that the input expression is a SQL string).
    5568
    5569    Returns:
    5570        The new Condition instance
    5571    """
    5572    return maybe_parse(
    5573        expression,
    5574        into=Condition,
    5575        dialect=dialect,
    5576        copy=copy,
    5577        **opts,
    5578    )

Initialize a logical condition expression.

###### Example:

>     >>> condition("x=1").sql()
>     'x = 1'

> This is helpful for composing larger logical syntax trees:

>     >>> where = condition("x=1")
>     >>> where = where.and_("y=1")
>     >>> Select().from_("tbl").select("*").where(where).sql()
>     'SELECT * FROM tbl WHERE x = 1 AND y = 1'

###### Arguments:

- *expression: the SQL code string to parse. If an Expression instance is passed, this is used as-is.
- dialect: the dialect used to parse the input expression (in the case that the input expression is a SQL string).
- copy: Whether or not to copy `expression` (only applies to expressions).
- **opts: other options to use to parse the input expressions (again, in the case that the input expression is a SQL string).

###### Returns:

> The new Condition instance

def and_( *expressions: Union[str, Expression, NoneType], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Condition: View Source

    5581def and_(
    5582    *expressions: t.Optional[ExpOrStr], dialect: DialectType = None, copy: bool = True, **opts
    5583) -> Condition:
    5584    """
    5585    Combine multiple conditions with an AND logical operator.
    5586
    5587    Example:
    5588        >>> and_("x=1", and_("y=1", "z=1")).sql()
    5589        'x = 1 AND (y = 1 AND z = 1)'
    5590
    5591    Args:
    5592        *expressions: the SQL code strings to parse.
    5593            If an Expression instance is passed, this is used as-is.
    5594        dialect: the dialect used to parse the input expression.
    5595        copy: whether or not to copy `expressions` (only applies to Expressions).
    5596        **opts: other options to use to parse the input expressions.
    5597
    5598    Returns:
    5599        And: the new condition
    5600    """
    5601    return t.cast(Condition, _combine(expressions, And, dialect, copy=copy, **opts))

Combine multiple conditions with an AND logical operator.

###### Example:

>     >>> and_("x=1", and_("y=1", "z=1")).sql()
>     'x = 1 AND (y = 1 AND z = 1)'

###### Arguments:

- *expressions: the SQL code strings to parse. If an Expression instance is passed, this is used as-is.
- dialect: the dialect used to parse the input expression.
- copy: whether or not to copy `expressions` (only applies to Expressions).
- **opts: other options to use to parse the input expressions.

###### Returns:

> And: the new condition

def or_( *expressions: Union[str, Expression, NoneType], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Condition: View Source

    5604def or_(
    5605    *expressions: t.Optional[ExpOrStr], dialect: DialectType = None, copy: bool = True, **opts
    5606) -> Condition:
    5607    """
    5608    Combine multiple conditions with an OR logical operator.
    5609
    5610    Example:
    5611        >>> or_("x=1", or_("y=1", "z=1")).sql()
    5612        'x = 1 OR (y = 1 OR z = 1)'
    5613
    5614    Args:
    5615        *expressions: the SQL code strings to parse.
    5616            If an Expression instance is passed, this is used as-is.
    5617        dialect: the dialect used to parse the input expression.
    5618        copy: whether or not to copy `expressions` (only applies to Expressions).
    5619        **opts: other options to use to parse the input expressions.
    5620
    5621    Returns:
    5622        Or: the new condition
    5623    """
    5624    return t.cast(Condition, _combine(expressions, Or, dialect, copy=copy, **opts))

Combine multiple conditions with an OR logical operator.

###### Example:

>     >>> or_("x=1", or_("y=1", "z=1")).sql()
>     'x = 1 OR (y = 1 OR z = 1)'

###### Arguments:

- *expressions: the SQL code strings to parse. If an Expression instance is passed, this is used as-is.
- dialect: the dialect used to parse the input expression.
- copy: whether or not to copy `expressions` (only applies to Expressions).
- **opts: other options to use to parse the input expressions.

###### Returns:

> Or: the new condition

def not_( expression: Union[str, Expression], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts) -> Not: View Source

    5627def not_(expression: ExpOrStr, dialect: DialectType = None, copy: bool = True, **opts) -> Not:
    5628    """
    5629    Wrap a condition with a NOT operator.
    5630
    5631    Example:
    5632        >>> not_("this_suit='black'").sql()
    5633        "NOT this_suit = 'black'"
    5634
    5635    Args:
    5636        expression: the SQL code string to parse.
    5637            If an Expression instance is passed, this is used as-is.
    5638        dialect: the dialect used to parse the input expression.
    5639        copy: whether to copy the expression or not.
    5640        **opts: other options to use to parse the input expressions.
    5641
    5642    Returns:
    5643        The new condition.
    5644    """
    5645    this = condition(
    5646        expression,
    5647        dialect=dialect,
    5648        copy=copy,
    5649        **opts,
    5650    )
    5651    return Not(this=_wrap(this, Connector))

Wrap a condition with a NOT operator.

###### Example:

>     >>> not_("this_suit='black'").sql()
>     "NOT this_suit = 'black'"

###### Arguments:

- expression: the SQL code string to parse. If an Expression instance is passed, this is used as-is.
- dialect: the dialect used to parse the input expression.
- copy: whether to copy the expression or not.
- **opts: other options to use to parse the input expressions.

###### Returns:

> The new condition.

def paren( expression: Union[str, Expression], copy: bool = True) -> Paren: View Source

    5654def paren(expression: ExpOrStr, copy: bool = True) -> Paren:
    5655    """
    5656    Wrap an expression in parentheses.
    5657
    5658    Example:
    5659        >>> paren("5 + 3").sql()
    5660        '(5 + 3)'
    5661
    5662    Args:
    5663        expression: the SQL code string to parse.
    5664            If an Expression instance is passed, this is used as-is.
    5665        copy: whether to copy the expression or not.
    5666
    5667    Returns:
    5668        The wrapped expression.
    5669    """
    5670    return Paren(this=maybe_parse(expression, copy=copy))

Wrap an expression in parentheses.

###### Example:

>     >>> paren("5 + 3").sql()
>     '(5 + 3)'

###### Arguments:

- expression: the SQL code string to parse. If an Expression instance is passed, this is used as-is.
- copy: whether to copy the expression or not.

###### Returns:

> The wrapped expression.

SAFE_IDENTIFIER_RE = re.compile('^[_a-zA-Z][\\w]*$')
def to_identifier(name, quoted=None, copy=True): View Source

    5688def to_identifier(name, quoted=None, copy=True):
    5689    """Builds an identifier.
    5690
    5691    Args:
    5692        name: The name to turn into an identifier.
    5693        quoted: Whether or not force quote the identifier.
    5694        copy: Whether or not to copy a passed in Identefier node.
    5695
    5696    Returns:
    5697        The identifier ast node.
    5698    """
    5699
    5700    if name is None:
    5701        return None
    5702
    5703    if isinstance(name, Identifier):
    5704        identifier = maybe_copy(name, copy)
    5705    elif isinstance(name, str):
    5706        identifier = Identifier(
    5707            this=name,
    5708            quoted=not SAFE_IDENTIFIER_RE.match(name) if quoted is None else quoted,
    5709        )
    5710    else:
    5711        raise ValueError(f"Name needs to be a string or an Identifier, got: {name.__class__}")
    5712    return identifier

Builds an identifier.

###### Arguments:

- name: The name to turn into an identifier.
- quoted: Whether or not force quote the identifier.
- copy: Whether or not to copy a passed in Identefier node.

###### Returns:

> The identifier ast node.

INTERVAL_STRING_RE = re.compile('\\s*([0-9]+)\\s*([a-zA-Z]+)\\s*')
def to_interval( interval: str | Literal) -> Interval: View Source

    5718def to_interval(interval: str | Literal) -> Interval:
    5719    """Builds an interval expression from a string like '1 day' or '5 months'."""
    5720    if isinstance(interval, Literal):
    5721        if not interval.is_string:
    5722            raise ValueError("Invalid interval string.")
    5723
    5724        interval = interval.this
    5725
    5726    interval_parts = INTERVAL_STRING_RE.match(interval)  # type: ignore
    5727
    5728    if not interval_parts:
    5729        raise ValueError("Invalid interval string.")
    5730
    5731    return Interval(
    5732        this=Literal.string(interval_parts.group(1)),
    5733        unit=Var(this=interval_parts.group(2)),
    5734    )

Builds an interval expression from a string like '1 day' or '5 months'.

def to_table( sql_path: Union[str, Table, NoneType], dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **kwargs) -> Optional[Table]: View Source

    5747def to_table(
    5748    sql_path: t.Optional[str | Table], dialect: DialectType = None, **kwargs
    5749) -> t.Optional[Table]:
    5750    """
    5751    Create a table expression from a `[catalog].[schema].[table]` sql path. Catalog and schema are optional.
    5752    If a table is passed in then that table is returned.
    5753
    5754    Args:
    5755        sql_path: a `[catalog].[schema].[table]` string.
    5756        dialect: the source dialect according to which the table name will be parsed.
    5757        kwargs: the kwargs to instantiate the resulting `Table` expression with.
    5758
    5759    Returns:
    5760        A table expression.
    5761    """
    5762    if sql_path is None or isinstance(sql_path, Table):
    5763        return sql_path
    5764    if not isinstance(sql_path, str):
    5765        raise ValueError(f"Invalid type provided for a table: {type(sql_path)}")
    5766
    5767    table = maybe_parse(sql_path, into=Table, dialect=dialect)
    5768    if table:
    5769        for k, v in kwargs.items():
    5770            table.set(k, v)
    5771
    5772    return table

Create a table expression from a `[catalog].[schema].[table]` sql path. Catalog and schema are optional. If a table is passed in then that table is returned.

###### Arguments:

- sql_path: a `[catalog].[schema].[table]` string.
- dialect: the source dialect according to which the table name will be parsed.
- kwargs: the kwargs to instantiate the resulting `Table` expression with.

###### Returns:

> A table expression.

def to_column( sql_path: str | Column, **kwargs) -> Column: View Source

    5775def to_column(sql_path: str | Column, **kwargs) -> Column:
    5776    """
    5777    Create a column from a `[table].[column]` sql path. Schema is optional.
    5778
    5779    If a column is passed in then that column is returned.
    5780
    5781    Args:
    5782        sql_path: `[table].[column]` string
    5783    Returns:
    5784        Table: A column expression
    5785    """
    5786    if sql_path is None or isinstance(sql_path, Column):
    5787        return sql_path
    5788    if not isinstance(sql_path, str):
    5789        raise ValueError(f"Invalid type provided for column: {type(sql_path)}")
    5790    return column(*reversed(sql_path.split(".")), **kwargs)  # type: ignore

Create a column from a `[table].[column]` sql path. Schema is optional.

If a column is passed in then that column is returned.

###### Arguments:

- sql_path: `[table].[column]` string

###### Returns:

> Table: A column expression

def alias_( expression: Union[str, Expression], alias: str | Identifier, table: Union[bool, Sequence[str | Identifier]] = False, quoted: Optional[bool] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, copy: bool = True, **opts): View Source

    5793def alias_(
    5794    expression: ExpOrStr,
    5795    alias: str | Identifier,
    5796    table: bool | t.Sequence[str | Identifier] = False,
    5797    quoted: t.Optional[bool] = None,
    5798    dialect: DialectType = None,
    5799    copy: bool = True,
    5800    **opts,
    5801):
    5802    """Create an Alias expression.
    5803
    5804    Example:
    5805        >>> alias_('foo', 'bar').sql()
    5806        'foo AS bar'
    5807
    5808        >>> alias_('(select 1, 2)', 'bar', table=['a', 'b']).sql()
    5809        '(SELECT 1, 2) AS bar(a, b)'
    5810
    5811    Args:
    5812        expression: the SQL code strings to parse.
    5813            If an Expression instance is passed, this is used as-is.
    5814        alias: the alias name to use. If the name has
    5815            special characters it is quoted.
    5816        table: Whether or not to create a table alias, can also be a list of columns.
    5817        quoted: whether or not to quote the alias
    5818        dialect: the dialect used to parse the input expression.
    5819        copy: Whether or not to copy the expression.
    5820        **opts: other options to use to parse the input expressions.
    5821
    5822    Returns:
    5823        Alias: the aliased expression
    5824    """
    5825    exp = maybe_parse(expression, dialect=dialect, copy=copy, **opts)
    5826    alias = to_identifier(alias, quoted=quoted)
    5827
    5828    if table:
    5829        table_alias = TableAlias(this=alias)
    5830        exp.set("alias", table_alias)
    5831
    5832        if not isinstance(table, bool):
    5833            for column in table:
    5834                table_alias.append("columns", to_identifier(column, quoted=quoted))
    5835
    5836        return exp
    5837
    5838    # We don't set the "alias" arg for Window expressions, because that would add an IDENTIFIER node in
    5839    # the AST, representing a "named_window" [1] construct (eg. bigquery). What we want is an ALIAS node
    5840    # for the complete Window expression.
    5841    #
    5842    # [1]: https://cloud.google.com/bigquery/docs/reference/standard-sql/window-function-calls
    5843
    5844    if "alias" in exp.arg_types and not isinstance(exp, Window):
    5845        exp.set("alias", alias)
    5846        return exp
    5847    return Alias(this=exp, alias=alias)

Create an Alias expression.

###### Example:

>     >>> alias_('foo', 'bar').sql()
>     'foo AS bar'

>     >>> alias_('(select 1, 2)', 'bar', table=['a', 'b']).sql()
>     '(SELECT 1, 2) AS bar(a, b)'

###### Arguments:

- expression: the SQL code strings to parse. If an Expression instance is passed, this is used as-is.
- alias: the alias name to use. If the name has special characters it is quoted.
- table: Whether or not to create a table alias, can also be a list of columns.
- quoted: whether or not to quote the alias
- dialect: the dialect used to parse the input expression.
- copy: Whether or not to copy the expression.
- **opts: other options to use to parse the input expressions.

###### Returns:

> Alias: the aliased expression

def subquery( expression: Union[str, Expression], alias: Union[Identifier, str, NoneType] = None, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **opts) -> Select: View Source

    5850def subquery(
    5851    expression: ExpOrStr,
    5852    alias: t.Optional[Identifier | str] = None,
    5853    dialect: DialectType = None,
    5854    **opts,
    5855) -> Select:
    5856    """
    5857    Build a subquery expression.
    5858
    5859    Example:
    5860        >>> subquery('select x from tbl', 'bar').select('x').sql()
    5861        'SELECT x FROM (SELECT x FROM tbl) AS bar'
    5862
    5863    Args:
    5864        expression: the SQL code strings to parse.
    5865            If an Expression instance is passed, this is used as-is.
    5866        alias: the alias name to use.
    5867        dialect: the dialect used to parse the input expression.
    5868        **opts: other options to use to parse the input expressions.
    5869
    5870    Returns:
    5871        A new Select instance with the subquery expression included.
    5872    """
    5873
    5874    expression = maybe_parse(expression, dialect=dialect, **opts).subquery(alias)
    5875    return Select().from_(expression, dialect=dialect, **opts)

Build a subquery expression.

###### Example:

>     >>> subquery('select x from tbl', 'bar').select('x').sql()
>     'SELECT x FROM (SELECT x FROM tbl) AS bar'

###### Arguments:

- expression: the SQL code strings to parse. If an Expression instance is passed, this is used as-is.
- alias: the alias name to use.
- dialect: the dialect used to parse the input expression.
- **opts: other options to use to parse the input expressions.

###### Returns:

> A new Select instance with the subquery expression included.

def column( col: str | Identifier, table: Union[Identifier, str, NoneType] = None, db: Union[Identifier, str, NoneType] = None, catalog: Union[Identifier, str, NoneType] = None, quoted: Optional[bool] = None) -> Column: View Source

    5878def column(
    5879    col: str | Identifier,
    5880    table: t.Optional[str | Identifier] = None,
    5881    db: t.Optional[str | Identifier] = None,
    5882    catalog: t.Optional[str | Identifier] = None,
    5883    quoted: t.Optional[bool] = None,
    5884) -> Column:
    5885    """
    5886    Build a Column.
    5887
    5888    Args:
    5889        col: Column name.
    5890        table: Table name.
    5891        db: Database name.
    5892        catalog: Catalog name.
    5893        quoted: Whether to force quotes on the column's identifiers.
    5894
    5895    Returns:
    5896        The new Column instance.
    5897    """
    5898    return Column(
    5899        this=to_identifier(col, quoted=quoted),
    5900        table=to_identifier(table, quoted=quoted),
    5901        db=to_identifier(db, quoted=quoted),
    5902        catalog=to_identifier(catalog, quoted=quoted),
    5903    )

Build a Column.

###### Arguments:

- col: Column name.
- table: Table name.
- db: Database name.
- catalog: Catalog name.
- quoted: Whether to force quotes on the column's identifiers.

###### Returns:

> The new Column instance.

def cast( expression: Union[str, Expression], to: str | DataType | DataType.Type, **opts) -> Cast: View Source

    5906def cast(expression: ExpOrStr, to: str | DataType | DataType.Type, **opts) -> Cast:
    5907    """Cast an expression to a data type.
    5908
    5909    Example:
    5910        >>> cast('x + 1', 'int').sql()
    5911        'CAST(x + 1 AS INT)'
    5912
    5913    Args:
    5914        expression: The expression to cast.
    5915        to: The datatype to cast to.
    5916
    5917    Returns:
    5918        The new Cast instance.
    5919    """
    5920    expression = maybe_parse(expression, **opts)
    5921    return Cast(this=expression, to=DataType.build(to, **opts))

Cast an expression to a data type.

###### Example:

>     >>> cast('x + 1', 'int').sql()
>     'CAST(x + 1 AS INT)'

###### Arguments:

- expression: The expression to cast.
- to: The datatype to cast to.

###### Returns:

> The new Cast instance.

def table_( table: Identifier | str, db: Union[Identifier, str, NoneType] = None, catalog: Union[Identifier, str, NoneType] = None, quoted: Optional[bool] = None, alias: Union[Identifier, str, NoneType] = None) -> Table: View Source

    5924def table_(
    5925    table: Identifier | str,
    5926    db: t.Optional[Identifier | str] = None,
    5927    catalog: t.Optional[Identifier | str] = None,
    5928    quoted: t.Optional[bool] = None,
    5929    alias: t.Optional[Identifier | str] = None,
    5930) -> Table:
    5931    """Build a Table.
    5932
    5933    Args:
    5934        table: Table name.
    5935        db: Database name.
    5936        catalog: Catalog name.
    5937        quote: Whether to force quotes on the table's identifiers.
    5938        alias: Table's alias.
    5939
    5940    Returns:
    5941        The new Table instance.
    5942    """
    5943    return Table(
    5944        this=to_identifier(table, quoted=quoted) if table else None,
    5945        db=to_identifier(db, quoted=quoted) if db else None,
    5946        catalog=to_identifier(catalog, quoted=quoted) if catalog else None,
    5947        alias=TableAlias(this=to_identifier(alias)) if alias else None,
    5948    )

Build a Table.

###### Arguments:

- table: Table name.
- db: Database name.
- catalog: Catalog name.
- quote: Whether to force quotes on the table's identifiers.
- alias: Table's alias.

###### Returns:

> The new Table instance.

def values( values: Iterable[Tuple[Any, ...]], alias: Optional[str] = None, columns: Union[Iterable[str], Dict[str, DataType], NoneType] = None) -> Values: View Source

    5951def values(
    5952    values: t.Iterable[t.Tuple[t.Any, ...]],
    5953    alias: t.Optional[str] = None,
    5954    columns: t.Optional[t.Iterable[str] | t.Dict[str, DataType]] = None,
    5955) -> Values:
    5956    """Build VALUES statement.
    5957
    5958    Example:
    5959        >>> values([(1, '2')]).sql()
    5960        "VALUES (1, '2')"
    5961
    5962    Args:
    5963        values: values statements that will be converted to SQL
    5964        alias: optional alias
    5965        columns: Optional list of ordered column names or ordered dictionary of column names to types.
    5966         If either are provided then an alias is also required.
    5967
    5968    Returns:
    5969        Values: the Values expression object
    5970    """
    5971    if columns and not alias:
    5972        raise ValueError("Alias is required when providing columns")
    5973
    5974    return Values(
    5975        expressions=[convert(tup) for tup in values],
    5976        alias=(
    5977            TableAlias(this=to_identifier(alias), columns=[to_identifier(x) for x in columns])
    5978            if columns
    5979            else (TableAlias(this=to_identifier(alias)) if alias else None)
    5980        ),
    5981    )

Build VALUES statement.

###### Example:

>     >>> values([(1, '2')]).sql()
>     "VALUES (1, '2')"

###### Arguments:

- values: values statements that will be converted to SQL
- alias: optional alias
- columns: Optional list of ordered column names or ordered dictionary of column names to types. If either are provided then an alias is also required.

###### Returns:

> Values: the Values expression object

def var( name: Union[str, Expression, NoneType]) -> Var: View Source

    5984def var(name: t.Optional[ExpOrStr]) -> Var:
    5985    """Build a SQL variable.
    5986
    5987    Example:
    5988        >>> repr(var('x'))
    5989        '(VAR this: x)'
    5990
    5991        >>> repr(var(column('x', table='y')))
    5992        '(VAR this: x)'
    5993
    5994    Args:
    5995        name: The name of the var or an expression who's name will become the var.
    5996
    5997    Returns:
    5998        The new variable node.
    5999    """
    6000    if not name:
    6001        raise ValueError("Cannot convert empty name into var.")
    6002
    6003    if isinstance(name, Expression):
    6004        name = name.name
    6005    return Var(this=name)

Build a SQL variable.

###### Example:

>     >>> repr(var('x'))
>     '(VAR this: x)'

>     >>> repr(var(column('x', table='y')))
>     '(VAR this: x)'

###### Arguments:

- name: The name of the var or an expression who's name will become the var.

###### Returns:

> The new variable node.

def rename_table( old_name: str | Table, new_name: str | Table) -> AlterTable: View Source

    6008def rename_table(old_name: str | Table, new_name: str | Table) -> AlterTable:
    6009    """Build ALTER TABLE... RENAME... expression
    6010
    6011    Args:
    6012        old_name: The old name of the table
    6013        new_name: The new name of the table
    6014
    6015    Returns:
    6016        Alter table expression
    6017    """
    6018    old_table = to_table(old_name)
    6019    new_table = to_table(new_name)
    6020    return AlterTable(
    6021        this=old_table,
    6022        actions=[
    6023            RenameTable(this=new_table),
    6024        ],
    6025    )

Build ALTER TABLE... RENAME... expression

###### Arguments:

- old_name: The old name of the table
- new_name: The new name of the table

###### Returns:

> Alter table expression

def convert(value: Any, copy: bool = False) -> Expression: View Source

    6028def convert(value: t.Any, copy: bool = False) -> Expression:
    6029    """Convert a python value into an expression object.
    6030
    6031    Raises an error if a conversion is not possible.
    6032
    6033    Args:
    6034        value: A python object.
    6035        copy: Whether or not to copy `value` (only applies to Expressions and collections).
    6036
    6037    Returns:
    6038        Expression: the equivalent expression object.
    6039    """
    6040    if isinstance(value, Expression):
    6041        return maybe_copy(value, copy)
    6042    if isinstance(value, str):
    6043        return Literal.string(value)
    6044    if isinstance(value, bool):
    6045        return Boolean(this=value)
    6046    if value is None or (isinstance(value, float) and math.isnan(value)):
    6047        return NULL
    6048    if isinstance(value, numbers.Number):
    6049        return Literal.number(value)
    6050    if isinstance(value, datetime.datetime):
    6051        datetime_literal = Literal.string(
    6052            (value if value.tzinfo else value.replace(tzinfo=datetime.timezone.utc)).isoformat()
    6053        )
    6054        return TimeStrToTime(this=datetime_literal)
    6055    if isinstance(value, datetime.date):
    6056        date_literal = Literal.string(value.strftime("%Y-%m-%d"))
    6057        return DateStrToDate(this=date_literal)
    6058    if isinstance(value, tuple):
    6059        return Tuple(expressions=[convert(v, copy=copy) for v in value])
    6060    if isinstance(value, list):
    6061        return Array(expressions=[convert(v, copy=copy) for v in value])
    6062    if isinstance(value, dict):
    6063        return Map(
    6064            keys=Array(expressions=[convert(k, copy=copy) for k in value]),
    6065            values=Array(expressions=[convert(v, copy=copy) for v in value.values()]),
    6066        )
    6067    raise ValueError(f"Cannot convert {value}")

Convert a python value into an expression object.

Raises an error if a conversion is not possible.

###### Arguments:

- value: A python object.
- copy: Whether or not to copy `value` (only applies to Expressions and collections).

###### Returns:

> Expression: the equivalent expression object.

def replace_children( expression: Expression, fun: Callable, *args, **kwargs) -> None: View Source

    6070def replace_children(expression: Expression, fun: t.Callable, *args, **kwargs) -> None:
    6071    """
    6072    Replace children of an expression with the result of a lambda fun(child) -> exp.
    6073    """
    6074    for k, v in expression.args.items():
    6075        is_list_arg = type(v) is list
    6076
    6077        child_nodes = v if is_list_arg else [v]
    6078        new_child_nodes = []
    6079
    6080        for cn in child_nodes:
    6081            if isinstance(cn, Expression):
    6082                for child_node in ensure_collection(fun(cn, *args, **kwargs)):
    6083                    new_child_nodes.append(child_node)
    6084                    child_node.parent = expression
    6085                    child_node.arg_key = k
    6086            else:
    6087                new_child_nodes.append(cn)
    6088
    6089        expression.args[k] = new_child_nodes if is_list_arg else seq_get(new_child_nodes, 0)

Replace children of an expression with the result of a lambda fun(child) -> exp.

def column_table_names( expression: Expression, exclude: str = '') -> Set[str]: View Source

    6092def column_table_names(expression: Expression, exclude: str = "") -> t.Set[str]:
    6093    """
    6094    Return all table names referenced through columns in an expression.
    6095
    6096    Example:
    6097        >>> import sqlglot
    6098        >>> sorted(column_table_names(sqlglot.parse_one("a.b AND c.d AND c.e")))
    6099        ['a', 'c']
    6100
    6101    Args:
    6102        expression: expression to find table names.
    6103        exclude: a table name to exclude
    6104
    6105    Returns:
    6106        A list of unique names.
    6107    """
    6108    return {
    6109        table
    6110        for table in (column.table for column in expression.find_all(Column))
    6111        if table and table != exclude
    6112    }

Return all table names referenced through columns in an expression.

###### Example:

>     >>> import sqlglot
>     >>> sorted(column_table_names(sqlglot.parse_one("a.b AND c.d AND c.e")))
>     ['a', 'c']

###### Arguments:

- expression: expression to find table names.
- exclude: a table name to exclude

###### Returns:

> A list of unique names.

def table_name( table: Table | str, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None) -> str: View Source

    6115def table_name(table: Table | str, dialect: DialectType = None) -> str:
    6116    """Get the full name of a table as a string.
    6117
    6118    Args:
    6119        table: Table expression node or string.
    6120        dialect: The dialect to generate the table name for.
    6121
    6122    Examples:
    6123        >>> from sqlglot import exp, parse_one
    6124        >>> table_name(parse_one("select * from a.b.c").find(exp.Table))
    6125        'a.b.c'
    6126
    6127    Returns:
    6128        The table name.
    6129    """
    6130
    6131    table = maybe_parse(table, into=Table)
    6132
    6133    if not table:
    6134        raise ValueError(f"Cannot parse {table}")
    6135
    6136    return ".".join(
    6137        part.sql(dialect=dialect, identify=True)
    6138        if not SAFE_IDENTIFIER_RE.match(part.name)
    6139        else part.name
    6140        for part in table.parts
    6141    )

Get the full name of a table as a string.

###### Arguments:

- table: Table expression node or string.
- dialect: The dialect to generate the table name for.

###### Examples:

>     >>> from sqlglot import exp, parse_one
>     >>> table_name(parse_one("select * from a.b.c").find(exp.Table))
>     'a.b.c'

###### Returns:

> The table name.

def replace_tables(expression: ~E, mapping: Dict[str, str], copy: bool = True) -> ~E: View Source

    6144def replace_tables(expression: E, mapping: t.Dict[str, str], copy: bool = True) -> E:
    6145    """Replace all tables in expression according to the mapping.
    6146
    6147    Args:
    6148        expression: expression node to be transformed and replaced.
    6149        mapping: mapping of table names.
    6150        copy: whether or not to copy the expression.
    6151
    6152    Examples:
    6153        >>> from sqlglot import exp, parse_one
    6154        >>> replace_tables(parse_one("select * from a.b"), {"a.b": "c"}).sql()
    6155        'SELECT * FROM c'
    6156
    6157    Returns:
    6158        The mapped expression.
    6159    """
    6160
    6161    def _replace_tables(node: Expression) -> Expression:
    6162        if isinstance(node, Table):
    6163            new_name = mapping.get(table_name(node))
    6164            if new_name:
    6165                return to_table(
    6166                    new_name,
    6167                    **{k: v for k, v in node.args.items() if k not in ("this", "db", "catalog")},
    6168                )
    6169        return node
    6170
    6171    return expression.transform(_replace_tables, copy=copy)

Replace all tables in expression according to the mapping.

###### Arguments:

- expression: expression node to be transformed and replaced.
- mapping: mapping of table names.
- copy: whether or not to copy the expression.

###### Examples:

>     >>> from sqlglot import exp, parse_one
>     >>> replace_tables(parse_one("select * from a.b"), {"a.b": "c"}).sql()
>     'SELECT * FROM c'

###### Returns:

> The mapped expression.

def replace_placeholders( expression: Expression, *args, **kwargs) -> Expression: View Source

    6174def replace_placeholders(expression: Expression, *args, **kwargs) -> Expression:
    6175    """Replace placeholders in an expression.
    6176
    6177    Args:
    6178        expression: expression node to be transformed and replaced.
    6179        args: positional names that will substitute unnamed placeholders in the given order.
    6180        kwargs: keyword arguments that will substitute named placeholders.
    6181
    6182    Examples:
    6183        >>> from sqlglot import exp, parse_one
    6184        >>> replace_placeholders(
    6185        ...     parse_one("select * from :tbl where ? = ?"),
    6186        ...     exp.to_identifier("str_col"), "b", tbl=exp.to_identifier("foo")
    6187        ... ).sql()
    6188        "SELECT * FROM foo WHERE str_col = 'b'"
    6189
    6190    Returns:
    6191        The mapped expression.
    6192    """
    6193
    6194    def _replace_placeholders(node: Expression, args, **kwargs) -> Expression:
    6195        if isinstance(node, Placeholder):
    6196            if node.name:
    6197                new_name = kwargs.get(node.name)
    6198                if new_name:
    6199                    return convert(new_name)
    6200            else:
    6201                try:
    6202                    return convert(next(args))
    6203                except StopIteration:
    6204                    pass
    6205        return node
    6206
    6207    return expression.transform(_replace_placeholders, iter(args), **kwargs)

Replace placeholders in an expression.

###### Arguments:

- expression: expression node to be transformed and replaced.
- args: positional names that will substitute unnamed placeholders in the given order.
- kwargs: keyword arguments that will substitute named placeholders.

###### Examples:

>     >>> from sqlglot import exp, parse_one
>     >>> replace_placeholders(
>     ...     parse_one("select * from :tbl where ? = ?"),
>     ...     exp.to_identifier("str_col"), "b", tbl=exp.to_identifier("foo")
>     ... ).sql()
>     "SELECT * FROM foo WHERE str_col = 'b'"

###### Returns:

> The mapped expression.

def expand( expression: Expression, sources: Dict[str, Subqueryable], copy: bool = True) -> Expression: View Source

    6210def expand(
    6211    expression: Expression, sources: t.Dict[str, Subqueryable], copy: bool = True
    6212) -> Expression:
    6213    """Transforms an expression by expanding all referenced sources into subqueries.
    6214
    6215    Examples:
    6216        >>> from sqlglot import parse_one
    6217        >>> expand(parse_one("select * from x AS z"), {"x": parse_one("select * from y")}).sql()
    6218        'SELECT * FROM (SELECT * FROM y) AS z /* source: x */'
    6219
    6220        >>> expand(parse_one("select * from x AS z"), {"x": parse_one("select * from y"), "y": parse_one("select * from z")}).sql()
    6221        'SELECT * FROM (SELECT * FROM (SELECT * FROM z) AS y /* source: y */) AS z /* source: x */'
    6222
    6223    Args:
    6224        expression: The expression to expand.
    6225        sources: A dictionary of name to Subqueryables.
    6226        copy: Whether or not to copy the expression during transformation. Defaults to True.
    6227
    6228    Returns:
    6229        The transformed expression.
    6230    """
    6231
    6232    def _expand(node: Expression):
    6233        if isinstance(node, Table):
    6234            name = table_name(node)
    6235            source = sources.get(name)
    6236            if source:
    6237                subquery = source.subquery(node.alias or name)
    6238                subquery.comments = [f"source: {name}"]
    6239                return subquery.transform(_expand, copy=False)
    6240        return node
    6241
    6242    return expression.transform(_expand, copy=copy)

Transforms an expression by expanding all referenced sources into subqueries.

###### Examples:

>     >>> from sqlglot import parse_one
>     >>> expand(parse_one("select * from x AS z"), {"x": parse_one("select * from y")}).sql()
>     'SELECT * FROM (SELECT * FROM y) AS z /* source: x */'

>     >>> expand(parse_one("select * from x AS z"), {"x": parse_one("select * from y"), "y": parse_one("select * from z")}).sql()
>     'SELECT * FROM (SELECT * FROM (SELECT * FROM z) AS y /* source: y */) AS z /* source: x */'

###### Arguments:

- expression: The expression to expand.
- sources: A dictionary of name to Subqueryables.
- copy: Whether or not to copy the expression during transformation. Defaults to True.

###### Returns:

> The transformed expression.

def func( name: str, *args, dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None, **kwargs) -> Func: View Source

    6245def func(name: str, *args, dialect: DialectType = None, **kwargs) -> Func:
    6246    """
    6247    Returns a Func expression.
    6248
    6249    Examples:
    6250        >>> func("abs", 5).sql()
    6251        'ABS(5)'
    6252
    6253        >>> func("cast", this=5, to=DataType.build("DOUBLE")).sql()
    6254        'CAST(5 AS DOUBLE)'
    6255
    6256    Args:
    6257        name: the name of the function to build.
    6258        args: the args used to instantiate the function of interest.
    6259        dialect: the source dialect.
    6260        kwargs: the kwargs used to instantiate the function of interest.
    6261
    6262    Note:
    6263        The arguments `args` and `kwargs` are mutually exclusive.
    6264
    6265    Returns:
    6266        An instance of the function of interest, or an anonymous function, if `name` doesn't
    6267        correspond to an existing `sqlglot.expressions.Func` class.
    6268    """
    6269    if args and kwargs:
    6270        raise ValueError("Can't use both args and kwargs to instantiate a function.")
    6271
    6272    from sqlglot.dialects.dialect import Dialect
    6273
    6274    converted: t.List[Expression] = [maybe_parse(arg, dialect=dialect) for arg in args]
    6275    kwargs = {key: maybe_parse(value, dialect=dialect) for key, value in kwargs.items()}
    6276
    6277    parser = Dialect.get_or_raise(dialect)().parser()
    6278    from_args_list = parser.FUNCTIONS.get(name.upper())
    6279
    6280    if from_args_list:
    6281        function = from_args_list(converted) if converted else from_args_list.__self__(**kwargs)  # type: ignore
    6282    else:
    6283        kwargs = kwargs or {"expressions": converted}
    6284        function = Anonymous(this=name, **kwargs)
    6285
    6286    for error_message in function.error_messages(converted):
    6287        raise ValueError(error_message)
    6288
    6289    return function

Returns a Func expression.

###### Examples:

>     >>> func("abs", 5).sql()
>     'ABS(5)'

>     >>> func("cast", this=5, to=DataType.build("DOUBLE")).sql()
>     'CAST(5 AS DOUBLE)'

###### Arguments:

- name: the name of the function to build.
- args: the args used to instantiate the function of interest.
- dialect: the source dialect.
- kwargs: the kwargs used to instantiate the function of interest.

###### Note:

> The arguments `args` and `kwargs` are mutually exclusive.

###### Returns:

> An instance of the function of interest, or an anonymous function, if `name` doesn't correspond to an existing `Func` class.

def true() -> Boolean: View Source

    6292def true() -> Boolean:
    6293    """
    6294    Returns a true Boolean expression.
    6295    """
    6296    return Boolean(this=True)

Returns a true Boolean expression.

def false() -> Boolean: View Source

    6299def false() -> Boolean:
    6300    """
    6301    Returns a false Boolean expression.
    6302    """
    6303    return Boolean(this=False)

Returns a false Boolean expression.

def null() -> Null: View Source

    6306def null() -> Null:
    6307    """
    6308    Returns a Null expression.
    6309    """
    6310    return Null()

Returns a Null expression.

TRUE = (BOOLEAN this: True)
FALSE = (BOOLEAN this: False)
NULL = (NULL )