cloud-fan commented on code in PR #43910:
URL: https://github.com/apache/spark/pull/43910#discussion_r1403375882
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sql/api/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBaseParser.g4:
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@@ -975,6 +975,7 @@ primaryExpression
| LEFT_PAREN query RIGHT_PAREN
#subqueryExpression
| functionName LEFT_PAREN (setQuantifier? argument+=functionArgument
(COMMA argument+=functionArgument)*)? RIGHT_PAREN
+ (WITHIN GROUP LEFT_PAREN ORDER BY sortItem RIGHT_PAREN)?
Review Comment:
can we check other databases? Is the sort ordering always one item?
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