[Fix](nereids)make agg output unchanged after normalized repeat (#36207)

fe/fe-core/src/main/java/org/apache/doris/nereids/rules/analysis/NormalizeRepeat.java

@@ -41,6 +41,7 @@
 import org.apache.doris.nereids.util.PlanUtils;
 
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableList.Builder;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
@@ -179,6 +180,7 @@ private LogicalAggregate<Plan> normalizeRepeat(LogicalRepeat<Plan> repeat) {
                 .addAll(groupingSetsUsedSlot)
                 .addAll(allVirtualSlots)
                 .build();
+        normalizedAggOutput = getExprIdUnchangedNormalizedAggOutput(normalizedAggOutput, repeat.getOutputExpressions());
         return new LogicalAggregate<>(normalizedAggGroupBy, (List) normalizedAggOutput,
                 Optional.of(normalizedRepeat), normalizedRepeat);
     }
@@ -276,4 +278,25 @@ private Expression normalizeGroupingScalarFunction(NormalizeToSlotContext contex
             return expr;
         }
     }
+
+    private static List<NamedExpression> getExprIdUnchangedNormalizedAggOutput(
+            List<NamedExpression> normalizedAggOutput, List<NamedExpression> originalAggOutput) {
+        Builder<NamedExpression> builder = new ImmutableList.Builder<>();
+        for (int i = 0; i < originalAggOutput.size(); i++) {
+            NamedExpression e = normalizedAggOutput.get(i);
+            // process Expression like Alias(SlotReference#0)#0
+            if (e instanceof Alias && e.child(0) instanceof SlotReference) {
+                SlotReference slotReference = (SlotReference) e.child(0);
+                if (slotReference.getExprId().equals(e.getExprId())) {
+                    e = slotReference;
+                }
+            }
+            // Make the output ExprId unchanged
+            if (!e.getExprId().equals(originalAggOutput.get(i).getExprId())) {
+                e = new Alias(originalAggOutput.get(i).getExprId(), e, originalAggOutput.get(i).getName());
+            }
+            builder.add(e);
+        }
+        return builder.build();
+    }
 }

regression-test/data/nereids_rules_p0/grouping_sets/grouping_normalize_test.out

@@ -0,0 +1,28 @@
+-- !test_name_unchange --
+ \N	\N
+ \N	\N
+ -2169155	-2169155
+ -2169155	-2169155
+ -1760025	-1760025
+ -1760025	-1760025
+ -27328	-27328
+ -27328	-27328
+ -23380	-23380
+ -23380	-23380
+ -23025	-23025
+ -23025	-23025
+ -127	-127
+ -127	-127
+ -88	-88
+ -88	-88
+ -73	-73
+ -73	-73
+ 25	25
+ 25	25
+ 5694	5694
+ 5694	5694
+ 29932	29932
+ 29932	29932
+ 5907087	5907087
+ 5907087	5907087
+

regression-test/suites/nereids_rules_p0/grouping_sets/grouping_normalize_test.groovy

@@ -0,0 +1,54 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+suite("grouping_normalize_test"){
+    sql "SET enable_nereids_planner=true"
+    sql "SET enable_fallback_to_original_planner=false"
+
+    sql "drop table if exists normalize_repeat_name_unchanged"
+    sql """create table normalize_repeat_name_unchanged (
+             col_int_undef_signed int/*agg_type_placeholder*/    ,
+                     col_int_undef_signed2 int/*agg_type_placeholder*/    ,
+             col_float_undef_signed float/*agg_type_placeholder*/    ,
+                     col_int_undef_signed3 int/*agg_type_placeholder*/    ,
+             col_int_undef_signed4 int/*agg_type_placeholder*/    ,
+                     col_int_undef_signed5 int/*agg_type_placeholder*/    ,
+             pk int/*agg_type_placeholder*/
+     ) engine=olap
+     distributed by hash(pk) buckets 10
+     properties("replication_num" = "1");"""
+    sql """
+     insert into normalize_repeat_name_unchanged(pk,col_int_undef_signed,col_int_undef_signed2,col_float_undef_signed,
+     col_int_undef_signed3,col_int_undef_signed4,col_int_undef_signed5) values (0,null,-27328,5595590,null,null,5767077),(1,3831,null,87,-14582,21,null),
+     (2,10131,5907087,28248,2473748,88,-18315),(3,2352090,5694,5173440,null,null,-31126),(4,-26805,29932,null,-55,3148,-6705245),(5,null,null,41,57,-3060427,null),
+     (6,118,25,3472000,-123,null,-2934940),(7,null,null,-109,112,-7344754,4326526),(8,null,-2169155,-19402,null,null,26943),(9,46,null,1736620,30084,13838,null),
+     (10,24708,null,null,-806832,-116,676),(11,2232,-23025,null,9665,-27413,13457),(12,-6,-127,-5007917,20521,-48,2709),(13,-72,-127,3258,null,-6394361,-5580),
+     (14,4494439,-1760025,-16580,66,6562396,-280256),(15,6099281,-73,-5376852,-303421,null,-1843),(16,122,-23380,null,7350221,111,null),
+     (17,null,null,11356,null,11799,108),(18,-91,-88,39,-29582,null,121),(19,4991662,null,-220,7593505,-54,4086882);"""
+
+    qt_test_name_unchange """
+         SELECT
+             col_int_undef_signed2 AS C1 ,
+             col_int_undef_signed2
+         FROM
+         normalize_repeat_name_unchanged
+         GROUP BY
+         GROUPING SETS (
+         (col_int_undef_signed2),
+         (col_int_undef_signed2))
+         order by 1,2
+     """
+}