Grouping the results of multiple rows in one column [duplicate] - sql

Question

This question already has answers here:
Can I Comma Delimit Multiple Rows Into One Column? [duplicate]
(5 answers)
Closed 10 years ago.
The query below gives me two results where everything is same except the last column v2_roles.id. Is there a way to group them in one column (may be a comma seprated list) and get just one result back
SELECT v2_admin.adminid,
v2_admin.adminname,
v2_admin.login,
v2_admin.email,
v2_roles.id
FROM v2_admin
INNER JOIN v2_admin_roles
ON v2_admin.adminid = v2_admin_roles.adminid
INNER JOIN v2_roles
ON v2_admin_roles.roleid = v2_roles.id
WHERE v2_admin.adminid = 2

Answer 1

This should also work,
;WITH mytable AS (
SELECT v2_admin.adminid,
v2_admin.adminname,
v2_admin.login,
v2_admin.email,
v2_roles.id
FROM v2_admin
INNER JOIN v2_admin_roles
ON v2_admin.adminid = v2_admin_roles.adminid
INNER JOIN v2_roles
ON v2_admin_roles.roleid = v2_roles.id
WHERE v2_admin.adminid = 2
)
SELECT t1.adminid,t1.adminname, t1.login, t1.email,
roleIds =REPLACE( (SELECT convert(varchar,id) AS [data()]
FROM mytable t2
WHERE t2.adminid = t1.adminid
--ORDER BY t2.adminid
FOR XML PATH('')
), ' ', ' , ')
FROM mytable t1
GROUP BY t1.adminid,t1.adminname, t1.login, t1.email ;

Answer 2

This is a little trick using FOR XML to convert the field to a list and STUFF to remove the beginning comma -- this should be close (untested):
SELECT v2_admin.adminid,
v2_admin.adminname,
v2_admin.login,
v2_admin.email,
STUFF(
(
SELECT ',' + CAST(v2_roles.id as varchar) AS [text()]
FROM v2_roles
WHERE v2_admin_roles.roleid = v2_roles.id
ORDER BY v2_roles.id
FOR XML PATH('')
), 1, 1, '') AS Roles
FROM v2_admin
INNER JOIN v2_admin_roles
ON v2_admin.adminid = v2_admin_roles.adminid
WHERE v2_admin.adminid = 2
GROUP BY v2_admin.adminid,
v2_admin.adminname,
v2_admin.login,
v2_admin.email