diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index 3fb22f7f8da900fb45c0e875b66072a2ac7f6fc0..4e20e574991c86c5464c30fec0ef39dcb459ecfd 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -2220,9 +2220,7 @@ int tscProcessAlterTableMsgRsp(SSqlObj *pSql) {
 
   if (pTableMetaInfo->pTableMeta) {
     bool isSuperTable = UTIL_TABLE_IS_SUPER_TABLE(pTableMetaInfo);
-
     taosCacheRelease(tscCacheHandle, (void **)&(pTableMetaInfo->pTableMeta), true);
-//    taosCacheRelease(tscCacheHandle, (void **)&(pTableMetaInfo->pMetricMeta), true);
 
     if (isSuperTable) {  // if it is a super table, reset whole query cache
       tscTrace("%p reset query cache since table:%s is stable", pSql, pTableMetaInfo->name);
diff --git a/src/client/src/tscSubquery.c b/src/client/src/tscSubquery.c
index ddc41e52e52705d2838bef337996f50708bc23c0..3bc931a855876fff6e7630f6324d0e1a7261bbb8 100644
--- a/src/client/src/tscSubquery.c
+++ b/src/client/src/tscSubquery.c
@@ -1662,12 +1662,13 @@ void tscRetrieveDataRes(void *param, TAOS_RES *tres, int code) {
    */
   if (code != TSDB_CODE_SUCCESS) {
     if (trsupport->numOfRetry++ >= MAX_NUM_OF_SUBQUERY_RETRY) {
-      tscTrace("%p sub:%p reach the max retry times, set global code:%d", pParentSql, pSql, code);
+      tscTrace("%p sub:%p reach the max retry times, set global code:%s", pParentSql, pSql, tstrerror(code));
       atomic_val_compare_exchange_32(&pState->code, 0, code);
     } else {  // does not reach the maximum retry time, go on
       tscTrace("%p sub:%p failed code:%s, retry:%d", pParentSql, pSql, tstrerror(code), trsupport->numOfRetry);
       
       SSqlObj *pNew = tscCreateSqlObjForSubquery(pParentSql, trsupport, pSql);
+
       if (pNew == NULL) {
         tscError("%p sub:%p failed to create new subquery due to out of memory, abort retry, vgId:%d, orderOfSub:%d",
                  trsupport->pParentSqlObj, pSql, pVgroup->vgId, trsupport->subqueryIndex);
@@ -1677,7 +1678,8 @@ void tscRetrieveDataRes(void *param, TAOS_RES *tres, int code) {
       } else {
         SQueryInfo *pNewQueryInfo = tscGetQueryInfoDetail(&pNew->cmd, 0);
         assert(pNewQueryInfo->pTableMetaInfo[0]->pTableMeta != NULL);
-        
+
+        taos_free_result(pSql);
         tscProcessSql(pNew);
         return;
       }