EmmyMiao87 commented on a change in pull request #6380:
URL: https://github.com/apache/incubator-doris/pull/6380#discussion_r683222613
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File path:
fe/fe-core/src/main/java/org/apache/doris/planner/SingleNodePlanner.java
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@@ -1838,6 +1837,11 @@ public PlanNode createJoinNode(Analyzer analyzer,
PlanNode outer, PlanNode inner
*/
private PlanNode createJoinNode(Analyzer analyzer, PlanNode outer,
TableRef innerRef,
SelectStmt selectStmt) throws
UserException {
+ // Before creating a build node, ensure that all required slots are
materialized,
+ // even if slots that are not needed by Statement outside.
+ // Otherwise, when select stmt and on-clause does not contain the Slot
of the Union Node on the right side of Join,
+ // it will cause an error, see Doris-6380.
+ materializeTableResultForCrossJoinOrCountStar(innerRef, analyzer);
Review comment:
Changing the order is not a good way
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