rkondakov commented on code in PR #3172:
URL: https://github.com/apache/calcite/pull/3172#discussion_r1174893983
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core/src/main/java/org/apache/calcite/rel/rules/SemiJoinJoinTransposeRule.java:
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@@ -102,16 +101,18 @@ public SemiJoinJoinTransposeRule(RelBuilderFactory
relBuilderFactory) {
// determine which operands below the semi-join are the actual
// Rels that participate in the semi-join
+ final ImmutableIntList leftKeys = semiJoin.analyzeCondition().leftKeys;
Review Comment:
The `leftKeys` variable was defined much earlier than the place where it was
actually used. I moved it closer to this place to improve code readability.
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