求一条简单SQL语句，解决马上结贴
求一条简单SQL语句，情况如下

A表

id j1
1 20
2 30
3 40

B表

id j2
1 5
2 6
2 7
2 8
3 10
3 15

要的结果如下

id j1 j2
1 20 5
2 30 21
3 40 25

虽是简单，单要求不能使用group by，麻烦大家出手

[解决办法]
declare @t1 table(id int, j1 int)
insert @t1
select 1, 20
union all select 2, 30
union all select 3, 40

declare @t2 table(id int, j2 int)
insert @t2
select 1, 5
union all select 2, 6
union all select 2, 7
union all select 2, 8
union all select 3, 10
union all select 3, 15

select a.id,a.j1,(select sum(j2) from @t2 where id = a.id ) as j2
from @t1 as a

/*结果
id j1 j2
------------------------
1 20 5
2 30 21
3 40 25
*/
[解决办法]
也没有别的好答案了，结吧