SQL联合查询:子表任一记录与主表联合查询
时间:2016-09-09 15:13:36
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今天有网友群里提了这样一个关于SQL联合查询的需求:
一、有热心网友的方案:
二、我的方案:
select * from (
select a.*,(select top 1 Id from B as b where b.CgId =a.ID)as bid
from A as a
) as temp left join B as b2 on temp.bid=b2.Id
原文:http://www.cnblogs.com/johsan/p/5856469.html
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