select count(1) from da_ky_sys_role_menu where menu_id = #{menuId} delete from da_ky_sys_role_menu where role_id=#{roleId} delete from da_ky_sys_role_menu where role_id in #{roleId} insert into da_ky_sys_role_menu(role_id, menu_id) values (#{item.roleId},#{item.menuId})