starocean999 commented on code in PR #12313:
URL: https://github.com/apache/doris/pull/12313#discussion_r964608877


##########
fe/fe-core/src/main/java/org/apache/doris/analysis/SelectStmt.java:
##########
@@ -444,13 +444,18 @@ public void analyze(Analyzer analyzer) throws 
UserException {
             }
         }
         if (groupByClause != null && groupByClause.isGroupByExtension()) {
+            ArrayList<Expr> aggFnExprList = new ArrayList<>();
             for (SelectListItem item : selectList.getItems()) {
-                if (item.getExpr() instanceof FunctionCallExpr && 
item.getExpr().fn instanceof AggregateFunction) {
+                aggFnExprList.clear();
+                getAggregateFnExpr(item.getExpr(), aggFnExprList);
+                if (!aggFnExprList.isEmpty()) {

Review Comment:
   this is more clear and simple:
   `for (Expr aggFnExpr : aggFnExprList) {
       for (Expr expr : groupByClause.getGroupingExprs()) {
           ....
       }
   }`
   
   
   
   
      
   



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