diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index e10865b642270849b0f36a002f27b36f199cc4d6..40399d85b742b080bf35012534fa733024a6b956 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -1290,6 +1290,12 @@ static SSqlObj *tscCreateSqlObjForSubquery(SSqlObj *pSql, SRetrieveSupport *trsu
   SSqlObj *pNew = createSubqueryObj(pSql, 0, tscRetrieveDataRes, trsupport, prevSqlObj);
   if (pNew != NULL) {  // the sub query of two-stage super table query
     pNew->cmd.type |= TSDB_QUERY_TYPE_STABLE_SUBQUERY;
+    assert(pNew->cmd.numOfTables == 1);
+    
+    //launch subquery for each vnode, so the subquery index equals to the vnodeIndex.
+    SMeterMetaInfo* pMeterMetaInfo = tscGetMeterMetaInfo(&pNew->cmd, 0);
+    pMeterMetaInfo->vnodeIndex = trsupport->subqueryIndex;
+    
     pSql->pSubs[trsupport->subqueryIndex] = pNew;
   }
 
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 9876dad90667daa013d6dc1d7de7eb93df74b72b..4b0df767848b3117f0d4e382c5cb88b6843fc8ef 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -1706,12 +1706,10 @@ SSqlObj* createSubqueryObj(SSqlObj* pSql, int16_t tableIndex, void (*fp)(), void
   }
 
   pNew->fp = fp;
-
   pNew->param = param;
-  SMeterMetaInfo* pMetermetaInfo = tscGetMeterMetaInfo(pCmd, tableIndex);
-
+  
   char key[TSDB_MAX_TAGS_LEN + 1] = {0};
-  tscGetMetricMetaCacheKey(pCmd, key, pMetermetaInfo->pMeterMeta->uid);
+  tscGetMetricMetaCacheKey(pCmd, key, uid);
   
 #ifdef _DEBUG_VIEW
   printf("the metricmeta key is:%s\n", key);
@@ -1736,7 +1734,7 @@ SSqlObj* createSubqueryObj(SSqlObj* pSql, int16_t tableIndex, void (*fp)(), void
   }
 
   assert(pFinalInfo->pMeterMeta != NULL);
-  if (UTIL_METER_IS_METRIC(pMetermetaInfo)) {
+  if (UTIL_METER_IS_METRIC(pMeterMetaInfo)) {
     assert(pFinalInfo->pMetricMeta != NULL);
   }