liuyongvs commented on code in PR #28533:
URL: https://github.com/apache/flink/pull/28533#discussion_r3471760247
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flink-table/flink-table-planner/src/test/resources/org/apache/flink/table/planner/plan/stream/sql/SubplanReuseTest.xml:
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@@ -926,11 +926,11 @@ LogicalIntersect(all=[false])
</Resource>
<Resource name="optimized exec plan">
<![CDATA[
-Join(joinType=[LeftSemiJoin], where=[IS NOT DISTINCT FROM(random, random0)],
select=[random], leftInputSpec=[JoinKeyContainsUniqueKey],
rightInputSpec=[NoUniqueKey])
+Join(joinType=[LeftSemiJoin], where=[((random IS NULL AND random0 IS NULL) OR
(random = random0))], select=[random],
leftInputSpec=[JoinKeyContainsUniqueKey], rightInputSpec=[NoUniqueKey])
Review Comment:
comments: IS NOT DISTINCT FROM(random, random0) is equal to ((random IS NULL
AND random0 IS NULL) OR (random = random0))
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