This website requires Javascript to function properly. Please go to the setting of your web browser and enable Javascript for this website.

Ad by

最优利率和cashback可以申请特批，好信用好收入offer更好。请点链接扫码加微信咨询，Scotiabank -- Nick Zhang 6478812600。

Ad by

最优利率和cashback可以申请特批，好信用好收入offer更好。请点链接扫码加微信咨询，Scotiabank -- Nick Zhang 6478812600。

有没有SQL高手啊(大概中手就行了),HELP

goodbaby(小宝)

有两张表,A, B.
A有一个Field, 假设叫Main.
假设A有两条记录,Main的值等于1和2.
B有两个Field,假设叫Sub 和Amount.
假设B有备4条记录:
Sub Amount
a 10
a 20
b 5
c 6
我想要用一个SQL语句得到如下记录集:
Main Sub Amount
1 a 30
1 b 5
1 c 6
2 a 30
2 b 5
2 c 6

请赐教:)

(#367531@0)
Last Updated: 2002-2-13
This post has been archived. It cannot be replied.

Report

Replies, comments and Discussions:

工作学习 / IT技术讨论 / 有没有SQL高手啊(大概中手就行了),HELP -goodbaby(小宝); 2002-2-13 {587} (#367531@0)
有两张表,A, B.
A有一个Field, 假设叫Main.
假设A有两条记录,Main的值等于1和2.
B有两个Field,假设叫Sub 和Amount.
假设B有备4条记录:
Sub Amount
a 10
a 20
b 5
c 6
我想要用一个SQL语句得到如下记录集:
Main Sub Amount
1 a 30
1 b 5
1 c 6
2 a 30
2 b 5
2 c 6

请赐教:)

我的机子没装SQL,说一说我的SQL,你多试试吧 -antmm(沉没); 2002-2-13 {56} (#367541@0)
select main,sub,sum(amount)
from A,B
group by main,sub
觉得有些怪, 这个main字段和B表一点关系没有吗? anyway, 下面的句子能实现. -mjs(臭豆腐-在痛苦中挣扎); 2002-2-13 {85} (#367561@0)
SELECT a.main, b.sub, Sum(b.amount) AS SumOfamount
FROM a, b
GROUP BY a.main, b.sub

right -zjoy(Joy); 2002-2-13 (#367574@0)

Thank you guys!I got it!:) -goodbaby(小宝); 2002-2-13 (#367614@0)

@Florida

有没有SQL高手啊(大概中手就行了),HELP

Replies, comments and Discussions:

More Topics