------------------字段的连接--------------------
/*
id1 id2 id3
001 00101 20
001 00101 80
001 00101 75
002 00101 20
002 00101 10
003 00101 70
004 00101 70
004 00101 70
004 00101 70
*/
----->
/*
id1 id2 id3
001 00101 20 80 75
002 00101 20 10
003 00101 70
004 00101 70 70 70
*/
if object_id('getnum') is not null
drop function getnum
create function getnum(@id1 varchar(50))
returns varchar(50)
as
begin
declare @sql varchar(50)
set @sql=''
select @sql=@sql+id3+' ' from c where id1=@id1
set @sql=@sql
return @sql
end
----
select distinct id1,max(id2) id2,dbo.getnum(id1) as id3 from c group by id1,id3
sql 字段值的拼接
最新推荐文章于 2024-04-15 16:56:33 发布