menu_role_id as menuRoleId, menu_id as menuId, role_id as roleId, is_use as isUse menu_id = #{menuId} role_id = #{roleId} is_use = #{isUse} select from sys_menu_role where id = #{id} select menu_role_id as menuRoleId, menu_id as menuId, role_id as roleId from sys_menu_role where menu_id = #{menuId} and is_use = 1 SELECT from sys_menu_role insert into sys_menu_role menu_role_id, menu_id, role_id, is_use, #{menuRoleId}, #{menuId}, #{roleId}, #{isUse}, update sys_menu_role menu_role_id=#{menuRoleId}, menu_id=#{menuId}, role_id=#{roleId}, is_use=#{isUse}, where id=#{id} update sys_menu_role SET is_use = 0 where role_id = #{roleId} and is_use = 1 Delete from sys_menu_role where id = #{id}