diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index ca828112194eccbb8ba18bfd35401f5de1547183..a3d762edf8ff3f0636c1427360042c6d5de63028 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -1994,7 +1994,7 @@ int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, t
     TSDB_QUERY_SET_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_PROJECTION_QUERY);
 
     SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-    if (getTableIndexByName(&pItem->pNode->ColumnName.name, pQueryInfo, &index) != TSDB_CODE_SUCCESS) {
+    if (getTableIndexByName(&pItem->pNode->columnName, pQueryInfo, &index) != TSDB_CODE_SUCCESS) {
       return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg2);
     }
 
@@ -2031,7 +2031,7 @@ int32_t addProjectionExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, t
   } else if (optr == TK_ID) {
     SColumnIndex index = COLUMN_INDEX_INITIALIZER;
 
-    if (getColumnIndexByName(&pItem->pNode->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+    if (getColumnIndexByName(&pItem->pNode->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
       return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg2);
     }
 
@@ -2195,7 +2195,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
 
       if (pItem->pNode->Expr.paramList != NULL) {
         tSqlExprItem* pParamElem = taosArrayGet(pItem->pNode->Expr.paramList, 0);
-        SStrToken* pToken = &pParamElem->pNode->ColumnName.name;
+        SStrToken* pToken = &pParamElem->pNode->columnName;
         int16_t tokenId = pParamElem->pNode->tokenId;
         if ((pToken->z == NULL || pToken->n == 0) && (TK_INTEGER != tokenId)) {
           return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg3);
@@ -2204,7 +2204,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
         // select count(table.*), select count(1), count(2)
         if (tokenId == TK_ALL || tokenId == TK_INTEGER) {
           // check if the table name is valid or not
-          SStrToken tmpToken = pParamElem->pNode->ColumnName.name;
+          SStrToken tmpToken = pParamElem->pNode->columnName;
 
           if (getTableIndexByName(&tmpToken, pQueryInfo, &index) != TSDB_CODE_SUCCESS) {
             return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg4);
@@ -2259,7 +2259,6 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
         tscInsertPrimaryTsSourceColumn(pQueryInfo, pTableMetaInfo->pTableMeta->id.uid);
       }
 
-      pItem->pNode->ColumnName.stdName.z = strndup(pExpr->base.colInfo.name, tListLen(pExpr->base.colInfo.name));
       return TSDB_CODE_SUCCESS;
     }
 
@@ -2290,7 +2289,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
       }
 
       SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-      if ((getColumnIndexByName(&pParamElem->pNode->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS)) {
+      if ((getColumnIndexByName(&pParamElem->pNode->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS)) {
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg3);
       }
 
@@ -2398,7 +2397,6 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
       }
 
       tscInsertPrimaryTsSourceColumn(pQueryInfo, pExpr->base.uid);
-      pItem->pNode->ColumnName.stdName.z = strndup(pExpr->base.colInfo.name, tListLen(pExpr->base.colInfo.name));
       return TSDB_CODE_SUCCESS;
     }
 
@@ -2436,7 +2434,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
           SColumnIndex index = COLUMN_INDEX_INITIALIZER;
 
           if (pParamElem->pNode->tokenId == TK_ALL) { // select table.*
-            SStrToken tmpToken = pParamElem->pNode->ColumnName.name;
+            SStrToken tmpToken = pParamElem->pNode->columnName;
 
             if (getTableIndexByName(&tmpToken, pQueryInfo, &index) != TSDB_CODE_SUCCESS) {
               return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg4);
@@ -2457,7 +2455,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
             }
 
           } else {
-            if (getColumnIndexByName(&pParamElem->pNode->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+            if (getColumnIndexByName(&pParamElem->pNode->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
               return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg3);
             }
 
@@ -2472,7 +2470,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
             SSchema* pSchema = tscGetTableColumnSchema(pTableMetaInfo->pTableMeta, index.columnIndex);
 
             bool multiColOutput = taosArrayGetSize(pItem->pNode->Expr.paramList) > 1;
-            setResultColName(name, pItem, cvtFunc.originFuncId, &pParamElem->pNode->ColumnName.name, multiColOutput);
+            setResultColName(name, pItem, cvtFunc.originFuncId, &pParamElem->pNode->columnName, multiColOutput);
 
             if (setExprInfoForFunctions(pCmd, pQueryInfo, pSchema, cvtFunc, name, colIndex++, &index, finalResult) != 0) {
               return TSDB_CODE_TSC_INVALID_OPERATION;
@@ -2527,7 +2525,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
       }
       
       SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-      if (getColumnIndexByName(&pParamElem->pNode->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+      if (getColumnIndexByName(&pParamElem->pNode->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg3);
       }
 
@@ -2621,7 +2619,6 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
         tscColumnListInsert(pQueryInfo->colList, ids.ids[0].columnIndex, pExpr->base.uid, pSchema);
       }
 
-      pItem->pNode->ColumnName.stdName.z = strndup(pExpr->base.colInfo.name, tListLen(pExpr->base.colInfo.name));
       return TSDB_CODE_SUCCESS;
     }
     
@@ -2640,7 +2637,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
       tSqlExpr* pParam = pParamItem->pNode;
 
       SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-      if (getColumnIndexByName(&pParam->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+      if (getColumnIndexByName(&pParam->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg3);
       }
     
@@ -3586,7 +3583,7 @@ static int32_t getTablenameCond(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSqlExpr*
   tSqlExpr* pLeft = pTableCond->pLeft;
   tSqlExpr* pRight = pTableCond->pRight;
 
-  if (!isTablenameToken(&pLeft->ColumnName.name)) {
+  if (!isTablenameToken(&pLeft->columnName)) {
     return TSDB_CODE_TSC_INVALID_OPERATION;
   }
 
@@ -3623,7 +3620,7 @@ static int32_t getColumnQueryCondInfo(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSq
     return getColumnQueryCondInfo(pCmd, pQueryInfo, pExpr->pRight, pExpr->tokenId);
   } else {  // handle leaf node
     SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-    if (getColumnIndexByName(&pExpr->pLeft->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+    if (getColumnIndexByName(&pExpr->pLeft->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
       return TSDB_CODE_TSC_INVALID_OPERATION;
     }
 
@@ -3652,7 +3649,7 @@ static int32_t checkAndSetJoinCondInfo(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tS
   }
 
   SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-  if (getColumnIndexByName(&pExpr->pLeft->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+  if (getColumnIndexByName(&pExpr->pLeft->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
     return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg4);
   }
 
@@ -3685,7 +3682,7 @@ static int32_t checkAndSetJoinCondInfo(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tS
   int16_t leftIdx = index.tableIndex;
 
   index = (SColumnIndex)COLUMN_INDEX_INITIALIZER;
-  if (getColumnIndexByName(&pExpr->pRight->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+  if (getColumnIndexByName(&pExpr->pRight->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
     return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg4);
   }
 
@@ -3755,7 +3752,7 @@ static int32_t validateSQLExpr(SSqlCmd* pCmd, tSqlExpr* pExpr, SQueryInfo* pQuer
     }
 
     SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-    if (getColumnIndexByName(&pExpr->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+    if (getColumnIndexByName(&pExpr->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
       return TSDB_CODE_TSC_INVALID_OPERATION;
     }
 
@@ -3951,7 +3948,7 @@ static bool validateJoinExprNode(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSqlExpr
 
   SColumnIndex rightIndex = COLUMN_INDEX_INITIALIZER;
 
-  if (getColumnIndexByName(&pRight->ColumnName.name, pQueryInfo, &rightIndex, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+  if (getColumnIndexByName(&pRight->columnName, pQueryInfo, &rightIndex, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
     invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
     return false;
   }
@@ -4037,7 +4034,7 @@ static int32_t validateLikeExpr(tSqlExpr* pExpr, STableMeta* pTableMeta, int32_t
     }
 
     SSchema* pSchema = tscGetTableSchema(pTableMeta);
-    if ((!isTablenameToken(&pLeft->ColumnName.name)) && !IS_VAR_DATA_TYPE(pSchema[index].type)) {
+    if ((!isTablenameToken(&pLeft->columnName)) && !IS_VAR_DATA_TYPE(pSchema[index].type)) {
       return invalidOperationMsg(msgBuf, msg2);
     }
   }
@@ -4061,7 +4058,7 @@ static int32_t handleExprInQueryCond(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSql
   int32_t ret = TSDB_CODE_SUCCESS;
 
   SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-  if (getColumnIndexByName(&pLeft->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+  if (getColumnIndexByName(&pLeft->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
     return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg2);
   }
 
@@ -4104,7 +4101,7 @@ static int32_t handleExprInQueryCond(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSql
 
       int16_t leftIdx = index.tableIndex;
 
-      if (getColumnIndexByName(&pRight->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+      if (getColumnIndexByName(&pRight->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg2);
       }
 
@@ -4267,7 +4264,7 @@ static void doExtractExprForSTable(SSqlCmd* pCmd, tSqlExpr** pExpr, SQueryInfo*
     tSqlExpr* pLeft = (*pExpr)->pLeft;
 
     SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-    if (getColumnIndexByName(&pLeft->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+    if (getColumnIndexByName(&pLeft->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
       return;
     }
 
@@ -4434,7 +4431,7 @@ static int32_t getTimeRangeFromExpr(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, tSqlE
     return getTimeRangeFromExpr(pCmd, pQueryInfo, pExpr->pRight);
   } else {
     SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-    if (getColumnIndexByName(&pExpr->pLeft->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
+    if (getColumnIndexByName(&pExpr->pLeft->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS) {
       return TSDB_CODE_TSC_INVALID_OPERATION;
     }
 
@@ -7254,7 +7251,7 @@ int32_t tscGetExprFilters(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SArray* pSelect
 
   if (pSqlExpr->Expr.paramList != NULL) {
     pParam = taosArrayGet(pSqlExpr->Expr.paramList, 0);
-    SStrToken* pToken = &pParam->pNode->ColumnName.name;
+    SStrToken* pToken = &pParam->pNode->columnName;
 
     SColumnIndex index = COLUMN_INDEX_INITIALIZER;
     getColumnIndexByName(pToken, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd));
@@ -7286,7 +7283,7 @@ int32_t tscGetExprFilters(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SArray* pSelect
 //        index.tableIndex  = 0;
 //      } else {
 //        tSqlExprItem* pParamElem = taosArrayGet(pSqlExpr->Expr.paramList, 0);
-//        SStrToken* pToken = &pParamElem->pNode->ColumnName.name;
+//        SStrToken* pToken = &pParamElem->pNode->columnName;
 //        getColumnIndexByName(pToken, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd));
 //      }
 //
@@ -7469,13 +7466,13 @@ int32_t getHavingExpr(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SArray* pSelectNode
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
       }
 
-      if (pExpr1->tokenId == TK_ID && (pExpr1->ColumnName.name.z == NULL && pExpr1->ColumnName.name.n == 0)) {
+      if (pExpr1->tokenId == TK_ID && (pExpr1->columnName.z == NULL && pExpr1->columnName.n == 0)) {
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
       }
 
       if (pExpr1->tokenId == TK_ID) {
         SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-        if ((getColumnIndexByName(&pExpr1->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS)) {
+        if ((getColumnIndexByName(&pExpr1->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd)) != TSDB_CODE_SUCCESS)) {
           return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
         }
 
@@ -8246,7 +8243,7 @@ int32_t exprTreeFromSqlExpr(SSqlCmd* pCmd, tExprNode **pExpr, const tSqlExpr* pS
       }
     } else if (pSqlExpr->type == SQL_NODE_TABLE_COLUMN) { // column name, normal column arithmetic expression
       SColumnIndex index = COLUMN_INDEX_INITIALIZER;
-      int32_t ret = getColumnIndexByName(&pSqlExpr->ColumnName.name, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd));
+      int32_t ret = getColumnIndexByName(&pSqlExpr->columnName, pQueryInfo, &index, tscGetErrorMsgPayload(pCmd));
       if (ret != TSDB_CODE_SUCCESS) {
         return ret;
       }
diff --git a/src/query/inc/qSqlparser.h b/src/query/inc/qSqlparser.h
index 21baa7d2d25adcb38d67b87e95a1eecc19268fdf..f9a9992b81aa30b15b042a96af343c9e943bd20b 100644
--- a/src/query/inc/qSqlparser.h
+++ b/src/query/inc/qSqlparser.h
@@ -244,11 +244,7 @@ typedef struct tSqlExpr {
   } Expr;
 
   uint32_t           functionId;  // function id, todo remove it
-  struct {
-    SStrToken        name;
-    SStrToken        stdName;
-  } ColumnName;
-//  SStrToken          columnName;  // table column info
+  SStrToken          columnName;  // table column info
   tVariant           value;       // the use input value
   SStrToken          exprToken;   // original sql expr string
   uint32_t           flags;       // todo remove it
diff --git a/src/query/src/qSqlParser.c b/src/query/src/qSqlParser.c
index 05258f7c93ee226ae23c77f0649c45df8584eb61..fd957fdcce133cd636617ad0bf924ad3ea26d775 100644
--- a/src/query/src/qSqlParser.c
+++ b/src/query/src/qSqlParser.c
@@ -161,7 +161,7 @@ tSqlExpr *tSqlExprCreateIdValue(SStrToken *pToken, int32_t optrType) {
     // Here it must be the column name (tk_id) if it is not a number or string.
     assert(optrType == TK_ID || optrType == TK_ALL);
     if (pToken != NULL) {
-      pSqlExpr->ColumnName.name = *pToken;
+      pSqlExpr->columnName = *pToken;
     }
 
     pSqlExpr->tokenId = optrType;
@@ -355,7 +355,7 @@ int32_t tSqlExprCompare(tSqlExpr *left, tSqlExpr *right) {
     return 1;
   }
 
-  if (tStrTokenCompare(&left->ColumnName.name, &right->ColumnName.name)) {
+  if (tStrTokenCompare(&left->columnName, &right->columnName)) {
     return 1;
   }