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如何用SQL排除重复结果只取字段最大值的记录？ 复制代码 代码如下: select * from [Sheet1$] a where ID not exists (select 1 from [Sheet1$] 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 |
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