T-sql:
select b.字段X , a.maxsum from 表B b inner join (Select 字段B, count(*) as maxsum from 表A group by 字段B) a on b.字段B=a.字段B
where b.字段Y=b.字段B 试一下吧!
select b.字段X , a.maxsum from 表B b inner join (Select 字段B, count(*) as maxsum from 表A group by 字段B) a on b.字段B=a.字段B
where b.字段Y=b.字段B 试一下吧!
解决方案 »
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