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.求一sql语句

发布时间: 2012-02-15 12:09:44 作者: rapoo

在线等..急!..求一sql语句
各位侠:

现有如下两个查询结果

select count(*) as Acnt,sum(credit) as Acredit from A

select count(*) as Bcnt,sum(credit) as Bcredit from B

我现在要得到
select Acnt+Bcnt as ABcnt ,Acredit+Bcredit as ABcredit

求一个sql语句将其实现

说明:A,B两表结构不同,也无关联索引字段

[解决办法]
select ABcnt=sum(ABcnt),ABcredit=sum(ABcredit) from
(
select count(*) as ABcnt,sum(credit) as ABcredit from A
union all
select count(*) as ABcnt,sum(credit) as ABcredit from B
)a
[解决办法]
看样了不急,用join也可以,不如上边好,但可同时得到另个的4个量
select Acnt+Bcnt as ABcnt ,Acredit+Bcredit as ABcredit from
(select count(*) as Acnt,sum(credit) as Acredit from #aa)aa left join
(select count(*) as Bcnt,sum(credit) as Bcredit from #bb)bb on 1=1

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