cloud-fan commented on a change in pull request #28875:
URL: https://github.com/apache/spark/pull/28875#discussion_r443437559
##########
File path:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4
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@@ -437,8 +437,7 @@ dmlStatementNoWith
USING (source=multipartIdentifier |
'(' sourceQuery=query')') sourceAlias=tableAlias
ON mergeCondition=booleanExpression
- matchedClause*
- notMatchedClause*
#mergeIntoTable
+ matchedOrNotMatchedClause*
#mergeIntoTable
Review comment:
yea I think so. Seems we can keep this parser rule unchanged.
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