fix(query): fix error in generated the group results.

source/libs/executor/src/executil.c

@@ -141,13 +141,13 @@ void initGroupedResultInfo(SGroupResInfo* pGroupResInfo, SSHashObj* pHashmap, in
     p->groupId = *(uint64_t*)key;
     p->pos = *(SResultRowPosition*)pData;
     memcpy(p->key, (char*)key + sizeof(uint64_t), keyLen - sizeof(uint64_t));
-
     taosArrayPush(pGroupResInfo->pRows, &p);
+    num += 1;
   }
 
   if (order == TSDB_ORDER_ASC || order == TSDB_ORDER_DESC) {
     __compar_fn_t fn = (order == TSDB_ORDER_ASC) ? resultrowComparAsc : resultrowComparDesc;
-    int32_t       size = POINTER_BYTES;
+    size = POINTER_BYTES;
     taosSort(pGroupResInfo->pRows->pData, taosArrayGetSize(pGroupResInfo->pRows), size, fn);
   }