From 8bad3305d209efaeb0e4a165b4105584ae97b7b3 Mon Sep 17 00:00:00 2001
From: Haojun Liao <hjliao@taosdata.com>
Date: Mon, 16 May 2022 14:52:39 +0800
Subject: [PATCH] fix(query): return error code when connecting to database
 failed.

---
 source/client/src/clientImpl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index 666e9e0ffa..100ec42899 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -518,8 +518,9 @@ STscObj* taosConnectImpl(const char* user, const char* auth, const char* db, __t
   if (pRequest->code != TSDB_CODE_SUCCESS) {
     const char* errorMsg =
         (pRequest->code == TSDB_CODE_RPC_FQDN_ERROR) ? taos_errstr(pRequest) : tstrerror(pRequest->code);
-    printf("failed to connect to server, reason: %s\n\n", errorMsg);
+    fprintf(stderr,"failed to connect to server, reason: %s\n\n", errorMsg);
 
+    terrno = pRequest->code;
     destroyRequest(pRequest);
     taos_close(pTscObj);
     pTscObj = NULL;