diff --git a/src/client/src/tscSubquery.c b/src/client/src/tscSubquery.c
index b5b659de0c..d3f298c2b2 100644
--- a/src/client/src/tscSubquery.c
+++ b/src/client/src/tscSubquery.c
@@ -1447,9 +1447,7 @@ int32_t tscHandleMasterSTableQuery(SSqlObj *pSql) {
 static void tscFreeSubSqlObj(SRetrieveSupport *trsupport, SSqlObj *pSql) {
   tscDebug("%p start to free subquery result", pSql);
   
-  if (pSql->res.code == TSDB_CODE_SUCCESS) {
-    taos_free_result(pSql);
-  }
+  taos_free_result(pSql);
   
   tfree(trsupport->localBuffer);
   
@@ -1780,6 +1778,7 @@ static SSqlObj *tscCreateSqlObjForSubquery(SSqlObj *pSql, SRetrieveSupport *trsu
     pSql->pSubs[trsupport->subqueryIndex] = pNew;
   }
   
+  printf("------------alloc:%p\n", pNew);
   return pNew;
 }
 
diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index 54c9cdea65..a58423bbaa 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -1822,7 +1822,6 @@ SSqlObj* createSubqueryObj(SSqlObj* pSql, int16_t tableIndex, void (*fp)(), void
     STableMeta*  pPrevTableMeta = taosCacheTransfer(tscCacheHandle, (void**)&pPrevInfo->pTableMeta);
     
     SVgroupsInfo* pVgroupsInfo = pPrevInfo->vgroupList;
-    pPrevInfo->vgroupList = NULL;
     pFinalInfo = tscAddTableMetaInfo(pNewQueryInfo, name, pPrevTableMeta, pVgroupsInfo, pTableMetaInfo->tagColList);
   }