sohardforaname commented on code in PR #11035:
URL: https://github.com/apache/doris/pull/11035#discussion_r932472551
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fe/fe-core/src/main/java/org/apache/doris/nereids/memo/GroupExpression.java:
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@@ -168,6 +169,12 @@ public boolean equals(Object o) {
return false;
}
GroupExpression that = (GroupExpression) o;
+ // if the plan is LogicalRelation, this == that should be true,
+ // when if one relation appear in plan more than once,
+ // we cannot distinguish them throw equals function, since equals
function cannot use output info.
+ if (plan instanceof LogicalRelation) {
Review Comment:
ok！
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