日期:2014-05-18 浏览次数:20515 次
--表 a
--id time1 time2
--1 200 300
--1 300 400
--2 100 100
--2 300 500
--求查询结果为
--id sum(time1) sum (time2)
--1 500 700
--2 400 600
declare @a table(id int,time1 int,time2 int)
insert into @a values
(1 ,200 ,300),
(1, 300 ,400),
(2, 100 ,100),
(2 ,300 ,500 )
select id ,(select SUM(time1) from @a where a.id=id)as 'sum(time1)',
(select SUM(time2) from @a where a.id=id) as 'sum (time2)'
from @a a
group by id
id sum(time1) sum (time2)
----------- ----------- -----------
1 500 700
2 400 600
(2 行受影响)