cloud-fan commented on a change in pull request #34497:
URL: https://github.com/apache/spark/pull/34497#discussion_r746598699
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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 +598,11 @@ fromClause
: FROM relation (',' relation)* lateralView* pivotClause?
;
+asOf
Review comment:
This feature has an official name: temporal table. See
https://docs.microsoft.com/en-us/sql/relational-databases/tables/temporal-tables?view=sql-server-ver15
How about we name it `temporalClause`?
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