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Feat(bigquery): add support for the MERGE ... THEN INSERT ROW syntax #4096

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merged 1 commit into from
Sep 9, 2024
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Feat(bigquery): add support for the MERGE ... THEN INSERT ROW syntax #4096

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8 changes: 4 additions & 4 deletions sqlglot/parser.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6851,13 +6851,13 @@ def _parse_when_matched(self) -> t.List[exp.When]:
self._match(TokenType.THEN)

if self._match(TokenType.INSERT):
_this = self._parse_star()
if _this:
then: t.Optional[exp.Expression] = self.expression(exp.Insert, this=_this)
this = self._parse_star()
if this:
then: t.Optional[exp.Expression] = self.expression(exp.Insert, this=this)
else:
then = self.expression(
exp.Insert,
this=self._parse_value(),
this=exp.var("ROW") if self._match_text_seq("ROW") else self._parse_value(),
expression=self._match_text_seq("VALUES") and self._parse_value(),
)
elif self._match(TokenType.UPDATE):
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3 changes: 3 additions & 0 deletions tests/dialects/test_bigquery.py
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Original file line number Diff line number Diff line change
Expand Up @@ -191,6 +191,9 @@ def test_bigquery(self):
self.validate_identity("CAST(x AS NVARCHAR)", "CAST(x AS STRING)")
self.validate_identity("CAST(x AS TIMESTAMPTZ)", "CAST(x AS TIMESTAMP)")
self.validate_identity("CAST(x AS RECORD)", "CAST(x AS STRUCT)")
self.validate_identity(
"MERGE INTO dataset.NewArrivals USING (SELECT * FROM UNNEST([('microwave', 10, 'warehouse #1'), ('dryer', 30, 'warehouse #1'), ('oven', 20, 'warehouse #2')])) ON FALSE WHEN NOT MATCHED THEN INSERT ROW WHEN NOT MATCHED BY SOURCE THEN DELETE"
)
self.validate_identity(
"SELECT * FROM `SOME_PROJECT_ID.SOME_DATASET_ID.INFORMATION_SCHEMA.SOME_VIEW`"
)
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