XieJiann commented on code in PR #33642:
URL: https://github.com/apache/doris/pull/33642#discussion_r1575549907
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fe/fe-core/src/main/java/org/apache/doris/nereids/trees/plans/logical/LogicalUnion.java:
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@@ -196,6 +196,11 @@ public void computeUniform(FunctionalDependencies.Builder
fdBuilder) {
// don't propagate uniform slots
}
+ @Override
+ public void computeEqualSet(FunctionalDependencies.Builder fdBuilder) {
+ // don't generate any equal pair
Review Comment:
the child of the union can break the equal relation
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