在SQL Server中合并字段

Question

如何在SQL Server 2000中合并行

Answer 1

您是否尝试过在SQL Server 2000中使用FOR XML RAW？

Answer 2

您可以创建用户定义的函数为每个ID值执行字符串连接。

create table t (id int,start varchar(100),finish varchar(100)) 
insert into t 
select 1,'Start_Main', '' union all 
select 1,'Start_Submain1', '' union all 
select 2,'Start_Main', '' union all 
select 2,'Start_Submain2', 'End_Submain2' union all 
select 2,'Start_Submain3', 'End_Submain3' union all 
select 2,'Start_Submain1', '' union all 
select 2,'Start_Submain4', 'End_Submain4' 
Select * from t 
go 

/* User Defined Function to perform string concatenation per ID */ 
create function udfStringConcat (@ID int) 
returns varchar(500) 
as 
begin 
    declare @x varchar(500) 
    set @x = '' 

    select @x = @x + t.start + ',' + case when t.finish <> '' then t.finish + ',' else t.finish end 
     from t 
     where t.id = @ID 

    select @x = @x + 'End_Submain1,End_Main' 

    return @x 
end 
go 

select id, dbo.udfStringConcat(id) 
    from t 
    group by id 
go 

drop function udfStringConcat 
drop table t 
go