select zrzh,bdcdyh from
(select *, ROW_NUMBER() over(partition by zrzh order by FWBH desc) as rownum from TCBDCDJ.dbo.h A)t
where rownum<=2 ORDER BY zrzh
sqlserver分组查询前几条数据
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转载自gaochunhu.iteye.com/blog/2335987
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