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

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

@@ -42,6 +42,7 @@
 import org.apache.doris.nereids.util.PlanUtils.CollectNonWindowedAggFuncs;
 
 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;
@@ -191,6 +192,8 @@ 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);
     }
@@ -451,4 +454,25 @@ public Expression visitWindow(WindowExpression windowExpression, Map<Slot, Alias
             return hasNewChildren ? windowExpression.withChildren(newChildren) : windowExpression;
         }
     }
+
+    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

@@ -7,3 +7,31 @@
 29	-3	32
 41	1	\N
 
+-- !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

@@ -54,4 +54,39 @@ suite("grouping_normalize_test"){
             sql("SELECT col_int_undef_signed, col_int_undef_signed2, SUM(pk) FROM grouping_normalize_test GROUP BY GROUPING SETS ((col_int_undef_signed, col_int_undef_signed2));")
             notContains("VREPEAT_NODE")
     }
+
+
+    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
+    """
 }