为提高效率，提问时请提供以下信息，问题描述清晰可优先响应。
【DM版本】:V7.1.6.40
【操作系统】：WIN10
【CPU】:~
【问题描述】*：嵌套子查询时，提示无效的order by，
sql：
select * from WF_TASK where INSTANCEID=‘0100081531’ and STATUS=‘Finished’ and INSTANCESTEP<
(select INSTANCESTEP from WF_TASK WHERE INSTANCEID=‘0100081531’ and status <> ‘Invalid’ order by TaskID desc limit 1)
order by FinishTime desc limit 1