924060929 commented on code in PR #12583:
URL: https://github.com/apache/doris/pull/12583#discussion_r1020159143


##########
fe/fe-core/src/main/java/org/apache/doris/nereids/glue/translator/PhysicalPlanTranslator.java:
##########
@@ -198,6 +220,10 @@ public PlanFragment visitPhysicalAggregate(
             slotList.addAll(groupSlotList);
             slotList.addAll(aggFunctionOutput);
             outputTupleDesc = generateTupleDesc(slotList, null, context);
+
+            if (needSetSlotToNullable(outputExpressionList)) {
+                setSlotNullable(outputTupleDesc, slotList);
+            }

Review Comment:
   if the method is simple enough, please let the code reader understand the 
core logic without enter the method.
   ```suggestion
               if 
(containsGroupingScalarFunctioncOrVirtualSlot(outputExpressionList)) {
                   setNullableToNonVirtualSlotReference(outputTupleDesc, 
slotList);
               }
   ```



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