From 55ebb42c55d41d62c8f3f4bd79754d86d21b1d09 Mon Sep 17 00:00:00 2001
From: dapan1121 <wpan@taosdata.com>
Date: Thu, 21 Oct 2021 17:29:01 +0800
Subject: [PATCH] fix crash issue

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

diff --git a/src/client/src/tscSubquery.c b/src/client/src/tscSubquery.c
index af5d21c279..0b6cee89c7 100644
--- a/src/client/src/tscSubquery.c
+++ b/src/client/src/tscSubquery.c
@@ -2881,7 +2881,7 @@ void tscHandleSubqueryError(SRetrieveSupport *trsupport, SSqlObj *pSql, int numO
     SSqlObj *userSql = pParentSql->rootObj;
 
     if ((code == TSDB_CODE_TDB_INVALID_TABLE_ID || code == TSDB_CODE_VND_INVALID_VGROUP_ID) && userSql->retry < userSql->maxRetry) {
-      if (userSql != pParentSql) {
+      if (userSql != pParentSql && pParentSql->freeParam != NULL) {
         (*pParentSql->freeParam)(&pParentSql->param);
       }
 
-- 
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