diff --git a/src/client/inc/tscUtil.h b/src/client/inc/tscUtil.h
index 3918b15ad421d3bcc367301093c674033cfd79a1..2f9a18b9fc7c18c7f467e8b550f8e72dc96a55e9 100644
--- a/src/client/inc/tscUtil.h
+++ b/src/client/inc/tscUtil.h
@@ -251,7 +251,13 @@ void tscTryQueryNextVnode(SSqlObj *pSql, __async_cb_func_t fp);
 void tscAsyncQuerySingleRowForNextVnode(void *param, TAOS_RES *tres, int numOfRows);
 void tscTryQueryNextClause(SSqlObj* pSql, void (*queryFp)());
 
+typedef struct SColumnList {
+  int32_t      num;
+  SColumnIndex ids[TSDB_MAX_COLUMNS];
+} SColumnList;
 
+int32_t insertResultField(SQueryInfo* pQueryInfo, int32_t outputIndex, SColumnList* pIdList, int16_t bytes,
+                          int8_t type, char* fieldName, SSqlExpr* pSqlExpr);
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/client/src/tscJoinProcess.c b/src/client/src/tscJoinProcess.c
index afd8e98edac4522089e0aaafa02237da67bdd1cc..3d2f7949f251330372480b9dfb74eded9bd5967c 100644
--- a/src/client/src/tscJoinProcess.c
+++ b/src/client/src/tscJoinProcess.c
@@ -685,9 +685,9 @@ void tscSetupOutputColumnIndex(SSqlObj* pSql) {
   }
 
   SQueryInfo* pQueryInfo = tscGetQueryInfoDetail(pCmd, pCmd->clauseIndex);
-  pRes->pColumnIndex = calloc(1, sizeof(SColumnIndex) * pQueryInfo->fieldsInfo.numOfOutputCols);
+  pRes->pColumnIndex = calloc(1, sizeof(SColumnIndex) * pQueryInfo->exprsInfo.numOfExprs);
 
-  for (int32_t i = 0; i < pQueryInfo->fieldsInfo.numOfOutputCols; ++i) {
+  for (int32_t i = 0; i < pQueryInfo->exprsInfo.numOfExprs; ++i) {
     SSqlExpr* pExpr = tscSqlExprGet(pQueryInfo, i);
 
     int32_t tableIndexOfSub = -1;
diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 3f9b668d707a93fc3b843c4b936ef4e4dca44dd5..3b4fc0240cf854eb72e5683db311c58a1e220d96 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -38,11 +38,6 @@
 #define COLUMN_INDEX_VALIDE(index) (((index).tableIndex >= 0) && ((index).columnIndex >= TSDB_TBNAME_COLUMN_INDEX))
 #define TBNAME_LIST_SEP ","
 
-typedef struct SColumnList {
-  int32_t      num;
-  SColumnIndex ids[TSDB_MAX_COLUMNS];
-} SColumnList;
-
 static SSqlExpr* doAddProjectCol(SQueryInfo* pQueryInfo, int32_t outputIndex, int32_t colIdx, int32_t tableIndex);
 
 static int32_t setShowInfo(SSqlObj* pSql, SSqlInfo* pInfo);
@@ -60,8 +55,6 @@ static void getColumnName(tSQLExprItem* pItem, char* resultFieldName, int32_t na
 static void getRevisedName(char* resultFieldName, int32_t functionId, int32_t maxLen, char* columnName);
 
 static int32_t addExprAndResultField(SQueryInfo* pQueryInfo, int32_t colIdx, tSQLExprItem* pItem, bool isResultColumn);
-static int32_t insertResultField(SQueryInfo* pQueryInfo, int32_t outputIndex, SColumnList* pIdList, int16_t bytes,
-                                 int8_t type, char* fieldName, SSqlExpr* pSqlExpr);
 static int32_t changeFunctionID(int32_t optr, int16_t* functionId);
 static int32_t parseSelectClause(SSqlCmd* pCmd, int32_t clauseIndex, tSQLExprList* pSelection, bool isSTable);
 
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index de03375246cec89bcf1ee76eb653dcb66a09c39b..c4a8440ef60d14bb335a94d5dd8ac7830016ac42 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -694,13 +694,6 @@ int32_t tscLaunchJoinSubquery(SSqlObj *pSql, int16_t tableIndex, SJoinSubquerySu
              pNewQueryInfo->exprsInfo.numOfExprs, pNewQueryInfo->colList.numOfCols,
              pNewQueryInfo->fieldsInfo.numOfOutputCols, pNewQueryInfo->pMeterInfo[0]->name);
     tscPrintSelectClause(pNew, 0);
-  
-    tscTrace("%p subquery:%p tableIndex:%d, vnodeIdx:%d, type:%d, transfer to ts_comp query to retrieve timestamps, "
-             "exprInfo:%d, colList:%d, fieldsInfo:%d, name:%s",
-             pSql, pNew, tableIndex, pMeterMetaInfo->vnodeIndex, pNewQueryInfo->type,
-             pNewQueryInfo->exprsInfo.numOfExprs, pNewQueryInfo->colList.numOfCols,
-             pNewQueryInfo->fieldsInfo.numOfOutputCols, pNewQueryInfo->pMeterInfo[0]->name);
-    tscPrintSelectClause(pNew, 0);
   } else {
     SQueryInfo *pNewQueryInfo = tscGetQueryInfoDetail(&pNew->cmd, 0);
     pNewQueryInfo->type |= TSDB_QUERY_TYPE_SUBQUERY;
diff --git a/src/client/src/tscSql.c b/src/client/src/tscSql.c
index 5023534f659de76ec1b3d4edcdc64e2206f547ef..99bc9632deeff8bf98c8090e0fac7604104f84c9 100644
--- a/src/client/src/tscSql.c
+++ b/src/client/src/tscSql.c
@@ -74,7 +74,10 @@ TAOS *taos_connect_imp(const char *ip, const char *user, const char *pass, const
     tscMgmtIpList.ip[2] = inet_addr(tsMasterIp);
     strcpy(tscMgmtIpList.ipstr[3], tsSecondIp);
     tscMgmtIpList.ip[3] = inet_addr(tsSecondIp);
-    strcpy(tsMasterIp, ip);
+    
+    if (tsMasterIp != ip) {
+      strcpy(tsMasterIp, ip);
+    }
   }
 
   pObj = (STscObj *)malloc(sizeof(STscObj));
@@ -416,7 +419,7 @@ static char *getArithemicInputSrc(void *param, char *name, int32_t colId) {
   return pSupport->data[index] + pSupport->offset * pSupport->elemSize[index];
 }
 
-static void **doSetResultRowData(SSqlObj *pSql) {
+static void **doSetResultRowData(SSqlObj *pSql, bool finalResult) {
   SSqlCmd *pCmd = &pSql->cmd;
   SSqlRes *pRes = &pSql->res;
 
@@ -429,7 +432,6 @@ static void **doSetResultRowData(SSqlObj *pSql) {
 
   SQueryInfo *pQueryInfo = tscGetQueryInfoDetail(pCmd, pCmd->clauseIndex);
   
-  int32_t num = 0;
   for (int i = 0; i < tscNumOfFields(pQueryInfo); ++i) {
     if (pQueryInfo->fieldsInfo.pSqlExpr[i] != NULL) {
       SSqlExpr* pExpr = pQueryInfo->fieldsInfo.pSqlExpr[i];
@@ -444,7 +446,7 @@ static void **doSetResultRowData(SSqlObj *pSql) {
     TAOS_FIELD *pField = tscFieldInfoGetField(pQueryInfo, i);
     transferNcharData(pSql, i, pField);
 
-    // calculate the result from serveral other columns
+    // calculate the result from several other columns
     if (pQueryInfo->fieldsInfo.pExpr != NULL && pQueryInfo->fieldsInfo.pExpr[i] != NULL) {
       SArithmeticSupport *sas = (SArithmeticSupport *)calloc(1, sizeof(SArithmeticSupport));
       sas->offset = 0;
@@ -471,8 +473,6 @@ static void **doSetResultRowData(SSqlObj *pSql) {
     }
   }
 
-  assert(num <= pQueryInfo->fieldsInfo.numOfOutputCols);
-
   pRes->row++;  // index increase one-step
   return pRes->tsrow;
 }
@@ -536,9 +536,7 @@ static void **tscBuildResFromSubqueries(SSqlObj *pSql) {
 
   while (1) {
     SQueryInfo *pQueryInfo = tscGetQueryInfoDetail(&pSql->cmd, pSql->cmd.clauseIndex);
-    if (pRes->tsrow == NULL) {
-      pRes->tsrow = calloc(pQueryInfo->exprsInfo.numOfExprs, POINTER_BYTES);
-    }
+    tscCreateResPointerInfo(pRes, pQueryInfo);
 
     bool success = false;
 
@@ -550,10 +548,8 @@ static void **tscBuildResFromSubqueries(SSqlObj *pSql) {
     }
 
     if (numOfTableHasRes >= 2) {  // do merge result
-
-      success = (doSetResultRowData(pSql->pSubs[0]) != NULL) && (doSetResultRowData(pSql->pSubs[1]) != NULL);
-      //        TSKEY key1 = *(TSKEY *)pRes1->tsrow[0];
-      //        TSKEY key2 = *(TSKEY *)pRes2->tsrow[0];
+      success = (doSetResultRowData(pSql->pSubs[0], false) != NULL) &&
+          (doSetResultRowData(pSql->pSubs[1], false) != NULL);
       //        printf("first:%" PRId64 ", second:%" PRId64 "\n", key1, key2);
     } else {  // only one subquery
       SSqlObj *pSub = pSql->pSubs[0];
@@ -561,7 +557,7 @@ static void **tscBuildResFromSubqueries(SSqlObj *pSql) {
         pSub = pSql->pSubs[1];
       }
 
-      success = (doSetResultRowData(pSub) != NULL);
+      success = (doSetResultRowData(pSub, false) != NULL);
     }
 
     if (success) {  // current row of final output has been built, return to app
@@ -572,6 +568,41 @@ static void **tscBuildResFromSubqueries(SSqlObj *pSql) {
         SSqlRes *pRes1 = &pSql->pSubs[tableIndex]->res;
         pRes->tsrow[i] = pRes1->tsrow[columnIndex];
       }
+      
+      int32_t numOfOutputCols = tscNumOfFields(pQueryInfo);
+      assert(pRes->numOfCols >= numOfOutputCols);
+      
+      for(int32_t i = 0; i < numOfOutputCols; ++i) {
+        if (pQueryInfo->fieldsInfo.pSqlExpr[i] != NULL) {
+          continue;  // no arithmetic expression exists, continue
+        }
+
+        assert(pQueryInfo->fieldsInfo.pExpr[i] != NULL);
+        SArithmeticSupport *sas = (SArithmeticSupport *)calloc(1, sizeof(SArithmeticSupport));
+        sas->offset = 0;
+        sas->pExpr = pQueryInfo->fieldsInfo.pExpr[i];
+
+        sas->numOfCols = sas->pExpr->binExprInfo.numOfCols;
+
+        if (pRes->buffer[i] == NULL) {
+          pRes->buffer[i] = malloc(tscFieldInfoGetField(pQueryInfo, i)->bytes);
+        }
+
+        for (int32_t k = 0; k < sas->numOfCols; ++k) {
+          int32_t   columnIndex = sas->pExpr->binExprInfo.pReqColumns[k].colIdxInBuf;
+          assert(columnIndex < pQueryInfo->exprsInfo.numOfExprs);
+          
+          SSqlExpr *pExpr = tscSqlExprGet(pQueryInfo, columnIndex);
+
+          sas->elemSize[k] = pExpr->resBytes;
+          sas->data[k] = pRes->tsrow[columnIndex];
+        }
+
+        tSQLBinaryExprCalcTraverse(sas->pExpr->binExprInfo.pBinExpr, 1, pRes->buffer[i], sas, TSQL_SO_ASC,
+                                   getArithemicInputSrc);
+        pRes->tsrow[i] = pRes->buffer[i];
+        free(sas);  // todo optimization
+      }
 
       pRes->numOfTotalInCurrentClause++;
 
@@ -662,7 +693,7 @@ TAOS_ROW taos_fetch_row_impl(TAOS_RES *res) {
     }
   }
 
-  return doSetResultRowData(pSql);
+  return doSetResultRowData(pSql, true);
 }
 
 TAOS_ROW taos_fetch_row(TAOS_RES *res) {
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 52505f9d24acba837ab5cfd7127ef613193617fd..1073eec6ea7de122d311620f058abfcf97f09bdb 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -350,11 +350,13 @@ void tscClearInterpInfo(SQueryInfo* pQueryInfo) {
 
 int32_t tscCreateResPointerInfo(SSqlRes* pRes, SQueryInfo* pQueryInfo) {
   if (pRes->tsrow == NULL) {
-    int32_t numOfOutputCols = pQueryInfo->fieldsInfo.numOfOutputCols;
-    pRes->numOfCols = numOfOutputCols;
+    int32_t numOfColumns = pQueryInfo->exprsInfo.numOfExprs;
+    assert(numOfColumns >= pQueryInfo->fieldsInfo.numOfOutputCols);
+    
+    pRes->numOfCols = numOfColumns;
   
-    pRes->tsrow = calloc(POINTER_BYTES, numOfOutputCols);
-    pRes->buffer = calloc(POINTER_BYTES, numOfOutputCols);
+    pRes->tsrow = calloc(POINTER_BYTES, numOfColumns);
+    pRes->buffer = calloc(POINTER_BYTES, numOfColumns);
   
     // not enough memory
     if (pRes->tsrow == NULL || (pRes->buffer == NULL && pRes->numOfCols > 0)) {
@@ -370,8 +372,8 @@ int32_t tscCreateResPointerInfo(SSqlRes* pRes, SQueryInfo* pQueryInfo) {
 }
 
 void tscDestroyResPointerInfo(SSqlRes* pRes) {
+  // free all buffers containing the multibyte string
   if (pRes->buffer != NULL) {
-    // free all buffers containing the multibyte string
     for (int i = 0; i < pRes->numOfCols; i++) {
       tfree(pRes->buffer[i]);
     }
@@ -946,6 +948,7 @@ void tscFieldInfoCopy(SFieldInfo* src, SFieldInfo* dst, const int32_t* indexList
       tscFieldInfoSetValFromField(dst, i, &src->pFields[indexList[i]]);
       dst->pVisibleCols[i] = src->pVisibleCols[indexList[i]];
       dst->pSqlExpr[i] = src->pSqlExpr[indexList[i]];
+      dst->pExpr[i] = src->pExpr[indexList[i]];
     }
   }
 }
@@ -2004,8 +2007,16 @@ SSqlObj* createSubqueryObj(SSqlObj* pSql, int16_t tableIndex, void (*fp)(), void
         indexList[j++] = i;
       }
     }
+    
+    // create the fields info from the sql functions
+    SColumnList columnList = {.num = 1};
+  
+    for(int32_t k = 0; k < numOfOutputCols; ++k) {
+      SSqlExpr* pExpr = tscSqlExprGet(pQueryInfo, indexList[k]);
+      columnList.ids[0] = (SColumnIndex){.tableIndex = tableIndex, .columnIndex = pExpr->colInfo.colIdx};
+      insertResultField(pNewQueryInfo, k, &columnList, pExpr->resBytes, pExpr->resType, pExpr->aliasName, pExpr);
+    }
 
-    tscFieldInfoCopy(&pQueryInfo->fieldsInfo, &pNewQueryInfo->fieldsInfo, indexList, numOfOutputCols);
     free(indexList);
   
     //     make sure the the sqlExpr for each fields is correct
diff --git a/src/system/detail/src/vnodeQueryImpl.c b/src/system/detail/src/vnodeQueryImpl.c
index 77814f6b8a7a5c7c6535004be896bc4fac197134..4addadd72be27d0d45f8ed3477dd9306708f8458 100644
--- a/src/system/detail/src/vnodeQueryImpl.c
+++ b/src/system/detail/src/vnodeQueryImpl.c
@@ -1776,6 +1776,11 @@ static int32_t getNextQualifiedWindow(SQueryRuntimeEnv *pRuntimeEnv, STimeWindow
   SQuery *pQuery = pRuntimeEnv->pQuery;
 
   while (1) {
+    if ((pNextWin->ekey > pQuery->ekey && QUERY_IS_ASC_QUERY(pQuery)) ||
+        (pNextWin->skey < pQuery->ekey && !QUERY_IS_ASC_QUERY(pQuery))) {
+      return -1;
+    }
+    
     getNextTimeWindow(pQuery, pNextWin);
 
     if (pWindowResInfo->startTime > pNextWin->skey || (pNextWin->skey > pQuery->ekey && QUERY_IS_ASC_QUERY(pQuery)) ||