delete from sys_role_menu where role_id=#{roleId} select count(1) from sys_role_menu where menu_id=#{menuId} select rm.*, m.menu_name as "menuName" from sys_role_menu rm left join sys_menu m on m.menu_id = rm.menu_id where rm.role_id = #{roleId} delete from sys_role_menu where role_id in #{roleId} insert all into sys_role_menu(role_id, menu_id) values (#{item.roleId},#{item.menuId}) SELECT 1 FROM DUAL