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Merging upstream version 17.9.1.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
Daniel Baumann 2025-02-13 20:48:36 +01:00
parent 2bf6699c56
commit 9777880e00
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
87 changed files with 45907 additions and 42511 deletions
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18
sqlglot/optimizer/normalize_identifiers.py
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@ -1,8 +1,23 @@
from __future__ import annotations
import typing as t
from sqlglot import exp
from sqlglot._typing import E
from sqlglot.dialects.dialect import Dialect, DialectType
@t.overload
def normalize_identifiers(expression: E, dialect: DialectType = None) -> E:
...
@t.overload
def normalize_identifiers(expression: str, dialect: DialectType = None) -> exp.Expression:
...
def normalize_identifiers(expression, dialect=None):
"""
Normalize all unquoted identifiers to either lower or upper case, depending
on the dialect. This essentially makes those identifiers case-insensitive.
@ -16,6 +31,8 @@ def normalize_identifiers(expression: E, dialect: DialectType = None) -> E:
>>> expression = sqlglot.parse_one('SELECT Bar.A AS A FROM "Foo".Bar')
>>> normalize_identifiers(expression).sql()
'SELECT bar.a AS a FROM "Foo".bar'
>>> normalize_identifiers("foo", dialect="snowflake").sql(dialect="snowflake")
'FOO'
Args:
expression: The expression to transform.
@ -24,4 +41,5 @@ def normalize_identifiers(expression: E, dialect: DialectType = None) -> E:
Returns:
The transformed expression.
"""
expression = exp.maybe_parse(expression, dialect=dialect)
return expression.transform(Dialect.get_or_raise(dialect).normalize_identifier, copy=False)