From a49c706bee4edf1df8958997a8057d5df98ad5e6 Mon Sep 17 00:00:00 2001
From: yihaoDeng <yhdeng@taosdata.com>
Date: Wed, 7 Jul 2021 08:56:58 +0800
Subject: [PATCH] [TD-5035]<fix> fix empty pointer

---
 src/client/src/tscUtil.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/client/src/tscUtil.c b/src/client/src/tscUtil.c
index d653489e29..b42724a2ec 100644
--- a/src/client/src/tscUtil.c
+++ b/src/client/src/tscUtil.c
@@ -634,7 +634,9 @@ static void setResRawPtrImpl(SSqlRes* pRes, SInternalField* pInfo, int32_t i, bo
 
 void tscSetResRawPtr(SSqlRes* pRes, SQueryInfo* pQueryInfo) {
   assert(pRes->numOfCols > 0);
-
+  if (pRes->numOfRows == 0) {
+    return;
+  }
   int32_t offset = 0;
   for (int32_t i = 0; i < pQueryInfo->fieldsInfo.numOfOutput; ++i) {
     SInternalField* pInfo = (SInternalField*)TARRAY_GET_ELEM(pQueryInfo->fieldsInfo.internalField, i);