From 75dc981f757e0bccdbfa976f2cfb578e7f56c8ce Mon Sep 17 00:00:00 2001
From: wpan <wpan@taosdata.com>
Date: Wed, 29 Sep 2021 10:56:05 +0800
Subject: [PATCH] fix bug

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

diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 5b239d3bfb..bbc0472b2f 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -3011,7 +3011,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg9);
       }
 
-      if (taosArrayGetSize(pItem->pNode->Expr.paramList) <= 0) {
+      if (pItem->pNode->Expr.paramList == NULL || taosArrayGetSize(pItem->pNode->Expr.paramList) <= 0) {
         return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg13);        
       }
       
-- 
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