Adding upstream version 6.0.4.
Signed-off-by: Daniel Baumann <daniel@debian.org>
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122 changed files with 23162 additions and 0 deletions
216
sqlglot/dialects/presto.py
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216
sqlglot/dialects/presto.py
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from sqlglot import exp, transforms
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from sqlglot.dialects.dialect import (
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Dialect,
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format_time_lambda,
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if_sql,
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no_ilike_sql,
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no_safe_divide_sql,
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rename_func,
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str_position_sql,
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struct_extract_sql,
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)
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from sqlglot.dialects.mysql import MySQL
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from sqlglot.generator import Generator
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from sqlglot.helper import csv, list_get
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from sqlglot.parser import Parser
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from sqlglot.tokens import Tokenizer, TokenType
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def _approx_distinct_sql(self, expression):
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accuracy = expression.args.get("accuracy")
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accuracy = ", " + self.sql(accuracy) if accuracy else ""
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return f"APPROX_DISTINCT({self.sql(expression, 'this')}{accuracy})"
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def _concat_ws_sql(self, expression):
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sep, *args = expression.expressions
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sep = self.sql(sep)
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if len(args) > 1:
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return f"ARRAY_JOIN(ARRAY[{csv(*(self.sql(e) for e in args))}], {sep})"
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return f"ARRAY_JOIN({self.sql(args[0])}, {sep})"
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def _datatype_sql(self, expression):
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sql = self.datatype_sql(expression)
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if expression.this == exp.DataType.Type.TIMESTAMPTZ:
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sql = f"{sql} WITH TIME ZONE"
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return sql
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def _date_parse_sql(self, expression):
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return f"DATE_PARSE({self.sql(expression, 'this')}, '%Y-%m-%d %H:%i:%s')"
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def _explode_to_unnest_sql(self, expression):
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if isinstance(expression.this, (exp.Explode, exp.Posexplode)):
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return self.sql(
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exp.Join(
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this=exp.Unnest(
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expressions=[expression.this.this],
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alias=expression.args.get("alias"),
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ordinality=isinstance(expression.this, exp.Posexplode),
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),
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kind="cross",
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)
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)
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return self.lateral_sql(expression)
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def _initcap_sql(self, expression):
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regex = r"(\w)(\w*)"
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return f"REGEXP_REPLACE({self.sql(expression, 'this')}, '{regex}', x -> UPPER(x[1]) || LOWER(x[2]))"
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def _no_sort_array(self, expression):
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if expression.args.get("asc") == exp.FALSE:
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comparator = "(a, b) -> CASE WHEN a < b THEN 1 WHEN a > b THEN -1 ELSE 0 END"
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else:
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comparator = None
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args = csv(self.sql(expression, "this"), comparator)
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return f"ARRAY_SORT({args})"
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def _schema_sql(self, expression):
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if isinstance(expression.parent, exp.Property):
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columns = ", ".join(f"'{c.text('this')}'" for c in expression.expressions)
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return f"ARRAY[{columns}]"
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for schema in expression.parent.find_all(exp.Schema):
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if isinstance(schema.parent, exp.Property):
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expression = expression.copy()
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expression.expressions.extend(schema.expressions)
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return self.schema_sql(expression)
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def _quantile_sql(self, expression):
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self.unsupported("Presto does not support exact quantiles")
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return f"APPROX_PERCENTILE({self.sql(expression, 'this')}, {self.sql(expression, 'quantile')})"
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def _str_to_time_sql(self, expression):
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return f"DATE_PARSE({self.sql(expression, 'this')}, {self.format_time(expression)})"
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def _ts_or_ds_to_date_sql(self, expression):
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time_format = self.format_time(expression)
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if time_format and time_format not in (Presto.time_format, Presto.date_format):
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return f"CAST({_str_to_time_sql(self, expression)} AS DATE)"
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return (
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f"CAST(SUBSTR(CAST({self.sql(expression, 'this')} AS VARCHAR), 1, 10) AS DATE)"
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)
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def _ts_or_ds_add_sql(self, expression):
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this = self.sql(expression, "this")
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e = self.sql(expression, "expression")
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unit = self.sql(expression, "unit") or "'day'"
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return f"DATE_ADD({unit}, {e}, DATE_PARSE(SUBSTR({this}, 1, 10), {Presto.date_format}))"
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class Presto(Dialect):
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index_offset = 1
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null_ordering = "nulls_are_last"
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time_format = "'%Y-%m-%d %H:%i:%S'"
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time_mapping = MySQL.time_mapping
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class Tokenizer(Tokenizer):
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KEYWORDS = {
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**Tokenizer.KEYWORDS,
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"ROW": TokenType.STRUCT,
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}
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class Parser(Parser):
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FUNCTIONS = {
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**Parser.FUNCTIONS,
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"APPROX_DISTINCT": exp.ApproxDistinct.from_arg_list,
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"CARDINALITY": exp.ArraySize.from_arg_list,
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"CONTAINS": exp.ArrayContains.from_arg_list,
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"DATE_ADD": lambda args: exp.DateAdd(
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this=list_get(args, 2),
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expression=list_get(args, 1),
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unit=list_get(args, 0),
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),
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"DATE_DIFF": lambda args: exp.DateDiff(
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this=list_get(args, 2),
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expression=list_get(args, 1),
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unit=list_get(args, 0),
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),
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"DATE_FORMAT": format_time_lambda(exp.TimeToStr, "presto"),
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"DATE_PARSE": format_time_lambda(exp.StrToTime, "presto"),
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"FROM_UNIXTIME": exp.UnixToTime.from_arg_list,
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"STRPOS": exp.StrPosition.from_arg_list,
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"TO_UNIXTIME": exp.TimeToUnix.from_arg_list,
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}
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class Generator(Generator):
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STRUCT_DELIMITER = ("(", ")")
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WITH_PROPERTIES = [
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exp.PartitionedByProperty,
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exp.FileFormatProperty,
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exp.SchemaCommentProperty,
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exp.AnonymousProperty,
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exp.TableFormatProperty,
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]
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TYPE_MAPPING = {
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**Generator.TYPE_MAPPING,
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exp.DataType.Type.INT: "INTEGER",
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exp.DataType.Type.FLOAT: "REAL",
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exp.DataType.Type.BINARY: "VARBINARY",
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exp.DataType.Type.TEXT: "VARCHAR",
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exp.DataType.Type.TIMESTAMPTZ: "TIMESTAMP",
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exp.DataType.Type.STRUCT: "ROW",
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}
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TRANSFORMS = {
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**Generator.TRANSFORMS,
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**transforms.UNALIAS_GROUP,
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exp.ApproxDistinct: _approx_distinct_sql,
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exp.Array: lambda self, e: f"ARRAY[{self.expressions(e, flat=True)}]",
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exp.ArrayContains: rename_func("CONTAINS"),
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exp.ArraySize: rename_func("CARDINALITY"),
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exp.BitwiseAnd: lambda self, e: f"BITWISE_AND({self.sql(e, 'this')}, {self.sql(e, 'expression')})",
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exp.BitwiseLeftShift: lambda self, e: f"BITWISE_ARITHMETIC_SHIFT_LEFT({self.sql(e, 'this')}, {self.sql(e, 'expression')})",
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exp.BitwiseNot: lambda self, e: f"BITWISE_NOT({self.sql(e, 'this')})",
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exp.BitwiseOr: lambda self, e: f"BITWISE_OR({self.sql(e, 'this')}, {self.sql(e, 'expression')})",
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exp.BitwiseRightShift: lambda self, e: f"BITWISE_ARITHMETIC_SHIFT_RIGHT({self.sql(e, 'this')}, {self.sql(e, 'expression')})",
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exp.BitwiseXor: lambda self, e: f"BITWISE_XOR({self.sql(e, 'this')}, {self.sql(e, 'expression')})",
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exp.ConcatWs: _concat_ws_sql,
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exp.DataType: _datatype_sql,
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exp.DateAdd: lambda self, e: f"""DATE_ADD({self.sql(e, 'unit') or "'day'"}, {self.sql(e, 'expression')}, {self.sql(e, 'this')})""",
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exp.DateDiff: lambda self, e: f"""DATE_DIFF({self.sql(e, 'unit') or "'day'"}, {self.sql(e, 'expression')}, {self.sql(e, 'this')})""",
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exp.DateStrToDate: lambda self, e: f"CAST(DATE_PARSE({self.sql(e, 'this')}, {Presto.date_format}) AS DATE)",
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exp.DateToDi: lambda self, e: f"CAST(DATE_FORMAT({self.sql(e, 'this')}, {Presto.dateint_format}) AS INT)",
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exp.DiToDate: lambda self, e: f"CAST(DATE_PARSE(CAST({self.sql(e, 'this')} AS VARCHAR), {Presto.dateint_format}) AS DATE)",
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exp.FileFormatProperty: lambda self, e: self.property_sql(e),
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exp.If: if_sql,
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exp.ILike: no_ilike_sql,
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exp.Initcap: _initcap_sql,
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exp.Lateral: _explode_to_unnest_sql,
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exp.Levenshtein: rename_func("LEVENSHTEIN_DISTANCE"),
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exp.PartitionedByProperty: lambda self, e: f"PARTITIONED_BY = {self.sql(e.args['value'])}",
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exp.Quantile: _quantile_sql,
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exp.SafeDivide: no_safe_divide_sql,
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exp.Schema: _schema_sql,
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exp.SortArray: _no_sort_array,
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exp.StrPosition: str_position_sql,
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exp.StrToDate: lambda self, e: f"CAST({_str_to_time_sql(self, e)} AS DATE)",
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exp.StrToTime: _str_to_time_sql,
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exp.StrToUnix: lambda self, e: f"TO_UNIXTIME(DATE_PARSE({self.sql(e, 'this')}, {self.format_time(e)}))",
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exp.StructExtract: struct_extract_sql,
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exp.TableFormatProperty: lambda self, e: f"TABLE_FORMAT = '{e.text('value').upper()}'",
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exp.TimeStrToDate: _date_parse_sql,
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exp.TimeStrToTime: _date_parse_sql,
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exp.TimeStrToUnix: lambda self, e: f"TO_UNIXTIME(DATE_PARSE({self.sql(e, 'this')}, {Presto.time_format}))",
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exp.TimeToStr: lambda self, e: f"DATE_FORMAT({self.sql(e, 'this')}, {self.format_time(e)})",
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exp.TimeToUnix: rename_func("TO_UNIXTIME"),
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exp.TsOrDiToDi: lambda self, e: f"CAST(SUBSTR(REPLACE(CAST({self.sql(e, 'this')} AS VARCHAR), '-', ''), 1, 8) AS INT)",
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exp.TsOrDsAdd: _ts_or_ds_add_sql,
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exp.TsOrDsToDate: _ts_or_ds_to_date_sql,
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exp.UnixToStr: lambda self, e: f"DATE_FORMAT(FROM_UNIXTIME({self.sql(e, 'this')}), {self.format_time(e)})",
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exp.UnixToTime: rename_func("FROM_UNIXTIME"),
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exp.UnixToTimeStr: lambda self, e: f"CAST(FROM_UNIXTIME({self.sql(e, 'this')}) AS VARCHAR)",
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}
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