From 1ea5d6dfc908a0d42d2261f61dc660e09809fc8b Mon Sep 17 00:00:00 2001
From: obdev <obdev@oceanbase.com>
Date: Tue, 14 Feb 2023 07:47:09 +0000
Subject: [PATCH] [to #45954004]Fix syntax error of host_name as '@%'

---
 src/pl/parser/pl_parser_mysql_mode.l | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pl/parser/pl_parser_mysql_mode.l b/src/pl/parser/pl_parser_mysql_mode.l
index ca3e38366..45307431d 100644
--- a/src/pl/parser/pl_parser_mysql_mode.l
+++ b/src/pl/parser/pl_parser_mysql_mode.l
@@ -50,7 +50,7 @@ c_cmt_end        \*+\/
 identifer        (([A-Za-z0-9$_]|{UTF8_GB_CHAR})*)
 int_num          [0-9]+
 system_variable  (@@[A-Za-z_][A-Za-z0-9_]*)
-user_variable    (@[A-Za-z0-9_\.$]*)|(@[`'\"][`'\"A-Za-z0-9_\.$/%]*)
+user_variable    (@[A-Za-z0-9_\.$]*)|(@[`'\"][`'\"A-Za-z0-9_\.$/%]*)|(@%)
 
 quote         '
 sqbegin       {quote}