From 168a76e53dec17693a4ed9d44361a16f36bda2c8 Mon Sep 17 00:00:00 2001
From: yihaoDeng <luomoxyz@126.com>
Date: Tue, 4 Aug 2020 01:57:49 +0000
Subject: [PATCH] [TD-1039]

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

diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index 3fd0aa79a6..a040b3ef55 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -1999,7 +1999,8 @@ int tscProcessUseDbRsp(SSqlObj *pSql) {
   return 0;
 }
 
-int tscProcessDropDbRsp(SSqlObj *UNUSED_PARAM(pSql)) {
+int tscProcessDropDbRsp(SSqlObj *pSql) {
+  pSql->pTscObj->db[0] = 0;
   taosCacheEmpty(tscCacheHandle);
   return 0;
 }