SSRS - Group_Concat Motsvarar jag ett uttryck?

prova något i stil med detta (fungerar på SQL Server 2005 och senare):

set nocount on;
declare @t table (id int, name varchar(20), x char(1))
insert into @t (id, name, x)
select 1,'test1', 'a' union
select 1,'test1', 'b' union
select 1,'test1', 'c' union
select 2,'test2', 'a' union
select 2,'test2', 'c' union
select 3,'test3', 'b' union
select 3,'test3', 'c' 
SET NOCOUNT OFF

SELECT p1.id, p1.name,
          stuff(
                   (SELECT
                        ', ' + x
                        FROM @t p2
                        WHERE p2.id=p1.id
                        ORDER BY name, x
                        FOR XML PATH('') 
                   )
                   ,1,2, ''
               ) AS p3
      FROM @t p1
     GROUP BY 
        id, name

UTGÅNG:

id          name                 p3
----------- -------------------- ---------
1           test1                a, b, c
2           test2                a, c
3           test3                b, c

(3 row(s) affected)