From fc2e62a18cced179af96d5a45afd5267327682d9 Mon Sep 17 00:00:00 2001
From: 54liuyao <54liuyao@163.com>
Date: Tue, 29 Oct 2024 14:14:26 +0800
Subject: [PATCH] use len of context buffer

---
 source/libs/executor/src/sysscanoperator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/libs/executor/src/sysscanoperator.c b/source/libs/executor/src/sysscanoperator.c
index 057913e04e..8aad415f70 100644
--- a/source/libs/executor/src/sysscanoperator.c
+++ b/source/libs/executor/src/sysscanoperator.c
@@ -2032,7 +2032,7 @@ static EDealRes getDBNameFromConditionWalker(SNode* pNode, void* pContext) {
 
       SValueNode* node = (SValueNode*)pNode;
       char*       dbName = nodesGetValueFromNode(node);
-      tstrncpy((char*)pContext, varDataVal(dbName), varDataLen(dbName) + 1);
+      tstrncpy((char*)pContext, varDataVal(dbName), TSDB_DB_NAME_LEN);
       return DEAL_RES_END;  // stop walk
     }
     default: