ulysses-you commented on a change in pull request #31368:
URL: https://github.com/apache/spark/pull/31368#discussion_r566523700
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File path: sql/core/src/test/resources/sql-tests/results/group-by-filter.sql.out
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@@ -796,14 +796,16 @@ IN/EXISTS predicate sub-queries can only be used in
Filter/Join and a few comman
: +- Filter (dept_id#x = outer(dept_id#x))
: +- SubqueryAlias dept
: +- View (`DEPT`, [dept_id#x,dept_name#x,state#x])
-: +- Project [dept_id#x, dept_name#x, state#x]
-: +- SubqueryAlias DEPT
-: +- LocalRelation [dept_id#x, dept_name#x, state#x]
+: +- Project [cast(dept_id#x as int) AS dept_id#x,
cast(dept_name#x as string) AS dept_name#x, cast(state#x as string) AS state#x]
Review comment:
Can we add a rule at the end of `Analyzer` if the plan is resolved to
check the top `Project` and reduce the`Cast` if is redundant ? The UpCast seems
to avoid the table reference changed before view analysis but we can remove it
after analysis.
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