create function getstr(@content varchar(100))
returns varchar(2000)
as
begin
declare @str varchar(2000)
set @str=''
select @str=@str+Value from ta where no=@content
select @str=right(@str,len(@str)-1)
return @str
end
go
--生成测试数据
create table A(ID int,No int,Value varchar(20))
insert into A select 1,1,'XX'
insert into A select 2,1,'YY'
insert into A select 3,2,'AA'
insert into A select 4,2,'BB'
go
--创建用户定义函数
create function f_str(@No int)
returns varchar(8000)
as
begin
declare @ret varchar(8000)
set @ret = ''
select @ret = @ret+Value from A where No = @No
return @ret
end
go
--执行
select No,Value=dbo.f_str(No) from A group by No order by No
go
--输出结果
/*
No Value
---- --------------
1 XXYY
2 AABB
*/