From a8c53babd6537576f9d926720d97710b4b6e7cc2 Mon Sep 17 00:00:00 2001 From: aozhiwei Date: Tue, 23 Jun 2020 12:32:20 +0800 Subject: [PATCH] 1 --- server/imserver/dbengine.cc | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/server/imserver/dbengine.cc b/server/imserver/dbengine.cc index 85d95ff..26a5ae8 100644 --- a/server/imserver/dbengine.cc +++ b/server/imserver/dbengine.cc @@ -179,8 +179,8 @@ void DBEngine::RefreshIdx() DBEngine::Instance()->ExecAsyncQuery ( conn_info, - "SELECT MAX(idx) FROM friend_apply UNION " - "SELECT MAX(idx) FROM event;", + "SELECT IFNULL(MAX(idx), 0) FROM friend_apply UNION ALL " + "SELECT IFNULL(MAX(idx), 0) FROM event;", { }, a8::XParams()