HanumathRao commented on code in PR #3193:
URL: https://github.com/apache/calcite/pull/3193#discussion_r1209077887
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core/src/main/java/org/apache/calcite/rel/rules/SubQueryRemoveRule.java:
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@@ -866,6 +866,8 @@ private static void matchFilter(SubQueryRemoveRule rule,
LogicVisitor.find(RelOptUtil.Logic.TRUE, ImmutableList.of(c), e);
final Set<CorrelationId> variablesSet =
RelOptUtil.getVariablesUsed(e.rel);
+ /* Only consider the correlated variables which originated from this
sub-query level*/
+ variablesSet.retainAll(filter.getVariablesSet());
Review Comment:
Yeah, it makes sense to add that changes to be on the safe side. I have
changed the code. thanks
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