[fix](Nereids) column pruning under union broken unexpectedly (#26884)

introduced by PR #24060
2023-11-14 14:39:32 +08:00
parent 9b3ddd13eb
commit 23e2bded1a
27 changed files with 1039 additions and 685 deletions
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/ColumnPruning.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/ColumnPruning.java
@ -117,9 +117,6 @@ public class ColumnPruning extends DefaultPlanRewriter<PruneContext> implements
        }

        LogicalUnion prunedOutputUnion = pruneOutput(union, union.getOutputs(), union::pruneOutputs, context);
-        if (prunedOutputUnion == union) {
-            return union;
-        }

        // start prune children of union
        List<Slot> originOutput = union.getOutput();