select * from sys_user_role user_id = #{userId} role_id = #{roleId} insert into sys_user_role ( `user_id`, `role_id` ) values ( #{userId}, #{roleId} ) delete from sys_user_role where user_id = #{value} delete from sys_user_role where role_id = #{value} select role_id from sys_user_role where user_id = #{value}