SQL求解....关于去重,分组,聚合.

[ldz2682]

我有两张表

用户表
id(PK) UserName userPhone userAddress
1 zhansan1 ph2oneNo ad1ress
2 zhansan2 pho2neNo adre3ss
3 zhansan3 phon3eNo ad3ress
4 zhansan4 pheoneNo adre2ss
5 zhansan51 phon1eNo adres3s

记录表
id(pk) userId(fk) money type tiem datail1 1 1000.00 收入 2011-03-23 15:35:54.403 ....
2 1 1000.00 收入 2011-03-23 15:35:54.403 ....
3 1 200.00 支出 2011-03-23 15:35:54.403 ....
4 1 800.00 记账 2011-03-23 15:35:54.403 ....
5 2 1000.00 收入 2011-03-23 15:35:54.403 ....
6 3 1000.00 收入 2011-03-23 15:35:54.403 ....
7 4 1234.00 记账 2011-03-23 15:35:54.403 ....
8 1 1000.00 收入 2011-03-23 15:35:54.403 ....


怎么写sql 才能查出来以下这样的效果呢

userId(或者userName) 总支出 总收入 总记账
xxxx xxx xxx xxx
xxxx xxx xxx xxx
xxxx xxx xxx xxx
xxxx xxx xxx xxx

SQL高手们帮我看看谢谢啦

[dawugui]

select m.userId, m.userName , 
       sum(case type when '支出' then money else 0 end) [总支出],
       sum(case type when '收入' then money else 0 end) [总收入],
       sum(case type when '记账' then money else 0 end) [总记账]
from 用户表 m , 记录表 n
where m.id = n.userId
group by m.userId, m.userName

[dawugui]

--如果不匹配的记录不显示
select m.userId, m.userName , 
       sum(case type when '支出' then money else 0 end) [总支出],
       sum(case type when '收入' then money else 0 end) [总收入],
       sum(case type when '记账' then money else 0 end) [总记账]
from 用户表 m , 记录表 n
where m.id = n.userId
group by m.userId, m.userName

--如果不匹配的记录显示为0
select m.userId, m.userName , 
       sum(case type when '支出' then money else 0 end) [总支出],
       sum(case type when '收入' then money else 0 end) [总收入],
       sum(case type when '记账' then money else 0 end) [总记账]
from 用户表 m left join 记录表 n
on m.id = n.userId
group by m.userId, m.userName

[--小F--]

seelct
   b.userid,
   sum(case type when '支出' then [money] else 0 end) as 总支出,
   sum(case type when '收入' then [money] else 0 end) as 总收入,
   sum([money]) as 总记账
from
   用户表 a, 记录表 b
where
   a.id=b.userid
group by
   b.userid

[--小F--]

select
   b.userid,
   sum(case type when '支出' then [money] else 0 end) as 总支出,
   sum(case type when '收入' then [money] else 0 end) as 总收入,
   sum([money]) as 总记账
from
   用户表 a, 记录表 b
where
   a.id=b.userid
group by
   b.userid

[ldz2682]

好用,,,可以讲下cese什么的么 我不大明白 谢谢了

[liang145]

create table #TableA
(id int, userId int, 
[money] float, [type] nvarchar(10), 
tiem datetime ,datail1 nvarchar(10))
insert #TableA select  1 ,2, 1000.00, '收入' ,'2011-03-23 15:35:54','403'union all
select  2, 1, 1000.00 , '收入' ,'2011-03-23 15:35:54','403'union all
select  3, 1 ,200.00 , '支出' ,'2011-03-23 15:35:54','403'union all
select  4 ,1 ,800.00 , '记账' ,'2011-03-23 15:35:54','403'union all
select  5 ,2 ,1000.00 , '收入' ,'2011-03-23 15:35:54','403'union all
select  6 ,3 ,1000.00 , '收入' ,'2011-03-23 15:35:54','403'union all
select  7 ,4, 1234.00 , '记账' ,'2011-03-23 15:35:54','403'union all
select  8 ,1 ,1000.00 , '收入' ,'2011-03-23 15:35:54','403'

select userId,
sum(case [type] when '收入' then [money] else 0 end)as '总收入',
sum(case [type] when '支出' then [money] else 0 end)as '总支出',
sum(case [type] when '记账' then [money] else 0 end)as '总记账'
from #TableA group by userId

case分支，如：
case [type] when '收入' then [money] else 0 end
表示当[type]值等'收入'时，返回[money]的值，否则返回0