cloud-fan commented on a change in pull request #34497:
URL: https://github.com/apache/spark/pull/34497#discussion_r749371855
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File path:
sql/catalyst/src/main/antlr4/org/apache/spark/sql/catalyst/parser/SqlBase.g4
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@@ -598,6 +598,13 @@ fromClause
: FROM relation (',' relation)* lateralView* pivotClause?
;
+temporalClause
+ : VERSION AS OF version=INTEGER_VALUE
+ | FOR SYSTEM_VERSION AS OF version=INTEGER_VALUE
Review comment:
should the version be non-number? e.g. `INTEGER_VALUE | IDENTIFIER`
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