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Merging upstream version 18.11.2.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
Daniel Baumann 2025-02-13 21:04:58 +01:00
parent 15b8b39545
commit c37998973e
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
88 changed files with 52059 additions and 46960 deletions
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18
sqlglot/optimizer/normalize_identifiers.py
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@ -22,6 +22,13 @@ 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.
It's possible to make this a no-op by adding a special comment next to the
identifier of interest:
SELECT a /* sqlglot.meta case_sensitive */ FROM table
In this example, the identifier `a` will not be normalized.
Note:
Some dialects (e.g. BigQuery) treat identifiers as case-insensitive even
when they're quoted, so in these cases all identifiers are normalized.
@ -43,4 +50,13 @@ def normalize_identifiers(expression, dialect=None):
"""
if isinstance(expression, str):
expression = exp.to_identifier(expression)
return expression.transform(Dialect.get_or_raise(dialect).normalize_identifier, copy=False)
dialect = Dialect.get_or_raise(dialect)
def _normalize(node: E) -> E:
if not node.meta.get("case_sensitive"):
exp.replace_children(node, _normalize)
node = dialect.normalize_identifier(node)
return node
return _normalize(expression)