Merge pull request #7567 from taosdata/hotfix/TD-6315

[td-6315]fix group by tag+having in nested query issue

src/client/inc/tscUtil.h

@@ -190,6 +190,7 @@ void    tscFieldInfoClear(SFieldInfo* pFieldInfo);
 void tscFieldInfoCopy(SFieldInfo* pFieldInfo, const SFieldInfo* pSrc, const SArray* pExprList);
 
 static FORCE_INLINE int32_t tscNumOfFields(SQueryInfo* pQueryInfo) { return pQueryInfo->fieldsInfo.numOfOutput; }
+int32_t tscGetFirstInvisibleFieldPos(SQueryInfo* pQueryInfo);
 
 int32_t tscFieldInfoCompare(const SFieldInfo* pFieldInfo1, const SFieldInfo* pFieldInfo2, int32_t *diffSize);
 void tscInsertPrimaryTsSourceColumn(SQueryInfo* pQueryInfo, uint64_t uid);

src/client/src/tscSQLParser.c

@@ -6944,8 +6944,6 @@ static int32_t doAddGroupbyColumnsOnDemand(SSqlCmd* pCmd, SQueryInfo* pQueryInfo
       }
     }
     
-    size_t size = tscNumOfExprs(pQueryInfo);
-  
     if (TSDB_COL_IS_TAG(pColIndex->flag)) {
 
       int32_t f = TSDB_FUNC_TAG;
@@ -6953,8 +6951,10 @@ static int32_t doAddGroupbyColumnsOnDemand(SSqlCmd* pCmd, SQueryInfo* pQueryInfo
         f = TSDB_FUNC_TAGPRJ;
       }
 
+      int32_t pos = tscGetFirstInvisibleFieldPos(pQueryInfo);      
+
       SColumnIndex index = {.tableIndex = pQueryInfo->groupbyExpr.tableIndex, .columnIndex = colIndex};
-      SExprInfo*   pExpr = tscExprAppend(pQueryInfo, f, &index, s->type, s->bytes, getNewResColId(pCmd), s->bytes, true);
+      SExprInfo*   pExpr = tscExprInsert(pQueryInfo, pos, f, &index, s->type, s->bytes, getNewResColId(pCmd), s->bytes, true);
 
       memset(pExpr->base.aliasName, 0, sizeof(pExpr->base.aliasName));
       tstrncpy(pExpr->base.aliasName, s->name, sizeof(pExpr->base.aliasName));
@@ -6964,13 +6964,15 @@ static int32_t doAddGroupbyColumnsOnDemand(SSqlCmd* pCmd, SQueryInfo* pQueryInfo
 
       // NOTE: tag column does not add to source column list
       SColumnList ids = createColumnList(1, 0, pColIndex->colIndex);
-      insertResultField(pQueryInfo, (int32_t)size, &ids, s->bytes, (int8_t)s->type, s->name, pExpr);
+      insertResultField(pQueryInfo, pos, &ids, s->bytes, (int8_t)s->type, s->name, pExpr);
     } else {
       // if this query is "group by" normal column, time window query is not allowed
       if (isTimeWindowQuery(pQueryInfo)) {
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
       }
 
+      size_t size = tscNumOfExprs(pQueryInfo);
+
       bool hasGroupColumn = false;
       for (int32_t j = 0; j < size; ++j) {
         SExprInfo* pExpr = tscExprGet(pQueryInfo, j);

src/client/src/tscUtil.c

@@ -2093,6 +2093,22 @@ TAOS_FIELD tscCreateField(int8_t type, const char* name, int16_t bytes) {
   return f;
 }
 
+int32_t tscGetFirstInvisibleFieldPos(SQueryInfo* pQueryInfo) { 
+  if (pQueryInfo->fieldsInfo.numOfOutput <= 0 || pQueryInfo->fieldsInfo.internalField == NULL) {
+    return 0;
+  }
+
+  for (int32_t i = 0; i < pQueryInfo->fieldsInfo.numOfOutput; ++i) {
+    SInternalField* pField = taosArrayGet(pQueryInfo->fieldsInfo.internalField, i);
+    if (!pField->visible) {
+      return i;
+    }    
+  }
+  
+  return pQueryInfo->fieldsInfo.numOfOutput; 
+}
+
+
 SInternalField* tscFieldInfoAppend(SFieldInfo* pFieldInfo, TAOS_FIELD* pField) {
   assert(pFieldInfo != NULL);
   pFieldInfo->numOfOutput++;