From c61cebe96227761ba2497524809eef2dff334198 Mon Sep 17 00:00:00 2001
From: dapan1121 <89396746@qq.com>
Date: Thu, 14 Jan 2021 16:23:40 +0800
Subject: [PATCH] fix bug

---
 src/client/src/tscSubquery.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/client/src/tscSubquery.c b/src/client/src/tscSubquery.c
index 1c81dfa3b2..dccb836619 100644
--- a/src/client/src/tscSubquery.c
+++ b/src/client/src/tscSubquery.c
@@ -415,7 +415,6 @@ static int32_t tscLaunchRealSubqueries(SSqlObj* pSql) {
   
   // scan all subquery, if one sub query has only ts, ignore it
   tscDebug("%p start to launch secondary subqueries, %d out of %d needs to query", pSql, numOfSub, pSql->subState.numOfSub);
-  memset(pSql->subState.states, 0, sizeof(*pSql->subState.states) * numOfSub);
 
   bool success = true;
   
@@ -527,6 +526,8 @@ static int32_t tscLaunchRealSubqueries(SSqlObj* pSql) {
       }
     }
 
+    subquerySetState(pPrevSub, &pSql->subState, i, 0);
+    
     size_t numOfCols = taosArrayGetSize(pQueryInfo->colList);
     tscDebug("%p subquery:%p tableIndex:%d, vgroupIndex:%d, type:%d, exprInfo:%" PRIzu ", colList:%" PRIzu ", fieldsInfo:%d, name:%s",
              pSql, pNew, 0, pTableMetaInfo->vgroupIndex, pQueryInfo->type, taosArrayGetSize(pQueryInfo->exprList),