SQL排除重复结果只取字段最大值分享

如何用SQL排除重复结果只取字段最大值的记录?要求得到的结果(即是PID相同的记录只取ID值最大的那一条)。 代码如下:select * from [Sheet1$] awhere ID not exists (select 1 from [Sheet1$] where PID=a.PID and ID>a.ID) select a.* from [Sheet1$] a inner join (select PID,max(ID) as max_id from [Sheet1$] group by PID) b on a.PID=b.PID and a.ID=b.max_id