diff --git a/src/sql/parser/sql_parser_mysql_mode.l b/src/sql/parser/sql_parser_mysql_mode.l
index 5837f0528..7693d56d4 100755
--- a/src/sql/parser/sql_parser_mysql_mode.l
+++ b/src/sql/parser/sql_parser_mysql_mode.l
@@ -64,7 +64,7 @@ c_cmt_end        \*+\/
 comment          ({sql_comment})
 identifier        (([A-Za-z0-9$_]|{UTF8_GB_CHAR})*)
 system_variable  (@@[A-Za-z_][A-Za-z0-9_]*)|(@@[`][`A-Za-z_][`A-Za-z_]*)
-user_variable    (@[A-Za-z0-9_\.$]*)|(@[`'\"][`'\"A-Za-z0-9_\.$/%@#\-!,;&~\:\?\+\|\^\*\{\}\(\)\[\]]*)
+user_variable    (@[A-Za-z0-9_\.$]*)|(@[`'\"][`'\"A-Za-z0-9_\.$/%]*)
 version_num      ([0-9]+\.+[0-9]*)
 int_num          [0-9]+
 client_version   \([0-9]+(\.[0-9]+)*\)
diff --git a/tools/deploy/mysql_test/test_suite/pl/r/mysql/sp_mysql.result b/tools/deploy/mysql_test/test_suite/pl/r/mysql/sp_mysql.result
index 9a532bf09..34b4a1b95 100644
--- a/tools/deploy/mysql_test/test_suite/pl/r/mysql/sp_mysql.result
+++ b/tools/deploy/mysql_test/test_suite/pl/r/mysql/sp_mysql.result
@@ -1946,8 +1946,6 @@ test	bug2267_4	PROCEDURE	'admin'@'%'	0000-00-00 00:00:00	0000-00-00 00:00:00	DEF
 call bug2267_2()|
 Db	Name	Type	Definer	Modified	Created	Security_type	Comment	character_set_client	collation_connection	Database Collation
 test	bug2267_4	FUNCTION	'admin'@'%'	0000-00-00 00:00:00	0000-00-00 00:00:00	DEFINER	NULL	utf8mb4	utf8mb4_general_ci	utf8mb4_general_ci
-test	bug2564_3	FUNCTION	'admin'@'%'	0000-00-00 00:00:00	0000-00-00 00:00:00	DEFINER	NULL	utf8mb4	utf8mb4_general_ci	utf8mb4_general_ci
-test	bug2564_4	FUNCTION	'admin'@'%'	0000-00-00 00:00:00	0000-00-00 00:00:00	DEFINER	NULL	utf8mb4	utf8mb4_general_ci	utf8mb4_general_ci
 call bug2267_3()|
 Procedure	sql_mode	Create Procedure	character_set_client	collation_connection	Database Collation
 bug2267_1		CREATE DEFINER = admin@% PROCEDURE `test`.`bug2267_1`