急求一条有点麻烦的sql语句!
table
A B C
1 a T
2 b F
2 e T
1 k T
得到数据:
A B C
1 a+K T
2 b+e F
我只能写到:select A,sum(b) group by A 不知道第三列怎么得?
其中第三列得出是根据:两值相与
------解决方案--------------------你这个是不是只要有一个是F都为F啊?
------解决方案--------------------??
select a,sum(b),min(c) from [Table] group by a
------解决方案--------------------/*
得到数据:
A B C
1 a+K T
2 b+e F
*/
create function dbo.fun(@a varchar(1000))
returns varchar(8000)
as
begin
declare @s varchar(8000)
set @s= ' '
select @s=@s+ '+ '+B from test where A=@a
return stuff(@s,1,1, ' ')
end
go
create table test(A int,B varchar(10),C varchar(10))
insert test select 1, 'a ', 'T '
union all select 2, 'b ', 'F '
union all select 2, 'e ', 'F '
union all select 1, 'K ', 'T '
select distinct A,dbo.fun(A),
case C when 'F ' then 'F ' else 'T ' end
from test
drop function fun
drop table test