From 1878e2955a7f7a3fed23c383a3b2b6ec9cf1af5c Mon Sep 17 00:00:00 2001
From: Alex Duan <417921451@qq.com>
Date: Wed, 25 Oct 2023 21:18:31 +0800
Subject: [PATCH] fix: dsn can not empty

---
 tools/shell/src/shellUtil.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/shell/src/shellUtil.c b/tools/shell/src/shellUtil.c
index f57c449961..0350d934a7 100644
--- a/tools/shell/src/shellUtil.c
+++ b/tools/shell/src/shellUtil.c
@@ -130,7 +130,7 @@ void shellCheckConnectMode() {
 	}
 	if (shell.args.cloud) {
 		shell.args.dsn = getenv("TDENGINE_CLOUD_DSN");
-		if (shell.args.cloud_dsn) {
+		if (shell.args.dsn && strlen(shell.args.dsn) > 4) {
 			shell.args.cloud = true;
       shell.args.local = false;
 			shell.args.restful = false;
@@ -138,7 +138,7 @@ void shellCheckConnectMode() {
 		}
 
     shell.args.dsn = getenv("TDENGINE_DSN");
-		if (shell.args.dsn) {
+		if (shell.args.dsn && strlen(shell.args.dsn) > 4) {
 			shell.args.cloud = true;
       shell.args.local = true;
 			shell.args.restful = false;