Merging upstream version 17.11.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 8 insertions, 6 deletions

diff --git a/sqlglot/dialects/hive.py b/sqlglot/dialects/hive.py
index 4e84085..aa4d845 100644
--- a/sqlglot/dialects/hive.py
+++ b/sqlglot/dialects/hive.py
@@ -59,7 +59,7 @@ def _add_date_sql(self: generator.Generator, expression: exp.DateAdd | exp.DateS
     if expression.expression.is_number:
         modified_increment = exp.Literal.number(int(expression.text("expression")) * multiplier)
     else:
-        modified_increment = expression.expression
+        modified_increment = expression.expression.copy()
         if multiplier != 1:
             modified_increment = exp.Mul(  # type: ignore
                 this=modified_increment, expression=exp.Literal.number(multiplier)
@@ -272,8 +272,8 @@ class Hive(Dialect):
             "YEAR": lambda args: exp.Year(this=exp.TsOrDsToDate.from_arg_list(args)),
         }
 
-        FUNCTION_PARSERS = {
-            **parser.Parser.FUNCTION_PARSERS,
+        NO_PAREN_FUNCTION_PARSERS = {
+            **parser.Parser.NO_PAREN_FUNCTION_PARSERS,
             "TRANSFORM": lambda self: self._parse_transform(),
         }
 
@@ -284,10 +284,12 @@ class Hive(Dialect):
             ),
         }
 
-        def _parse_transform(self) -> exp.Transform | exp.QueryTransform:
-            args = self._parse_csv(self._parse_lambda)
-            self._match_r_paren()
+        def _parse_transform(self) -> t.Optional[exp.Transform | exp.QueryTransform]:
+            if not self._match(TokenType.L_PAREN, advance=False):
+                self._retreat(self._index - 1)
+                return None
 
+            args = self._parse_wrapped_csv(self._parse_lambda)
             row_format_before = self._parse_row_format(match_row=True)
 
             record_writer = None