tente algo assim (funciona no SQL Server 2005 e superior):
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
SAÍDA:
id name p3
----------- -------------------- ---------
1 test1 a, b, c
2 test2 a, c
3 test3 b, c
(3 row(s) affected)
