SQL multiple results on one row when only one column has different values - sql

Question

I currently have a similar query to this one..
select i.App_Id as ApplicationId,
Cast(i.ObjectId as NVARCHAR(50)) as ObjectId,
1 as ActivityId,
Cast(case
when oh.ObjectId is null then 0
else 1
end as BIT) as Highlight,
iu.UserId as UserId
from table0 i
inner join table1 iu
on i.IdeaID = iu.IdeaID
left join table2 oh
on oh.ObjectId = i.IdeaID
left join table3 mIS
on i.IdeaID = mIS.IdeaID
AND mIS.EndTime is null
inner join table4 mISF
on mISF.StateFluxId = mIS.StateFluxId
where (iu.RelationId = 1 or iu.RelationId = 2)
which is returning, for example:
2 | 1 | 1 | 1 | 1
2 | 1 | 1 | 1 | 2
2 | 1 | 1 | 1 | 3
I'm trying to change it in order to merge the results of the 5th column when the other column values are the same:
2 | 1 | 1 | 1 | 1,2,3
Is this possible? Didn't manage to accomplish it using the Stuff function..
Thanks!

Answer 1

Have you tried like this,
SELECT DISTINCT i.App_Id AS ApplicationId
,Cast(i.ObjectId AS NVARCHAR(50)) AS ObjectId
,1 AS ActivityId
,Cast(CASE
WHEN oh.ObjectId IS NULL
THEN 0
ELSE 1
END AS BIT) AS Highlight
,
--iu.UserId as UserId
(stuff(SELECT ',' + userid FROM table1 WHERE Ideaid = iu.IdeaId FOR XML path(''), 1, 1, '')) AS UserId
FROM table0 i
INNER JOIN table1 iu ON i.IdeaID = iu.IdeaID
LEFT JOIN table2 oh ON oh.ObjectId = i.IdeaID
LEFT JOIN table3 mIS ON i.IdeaID = mIS.IdeaID
AND mIS.EndTime IS NULL
INNER JOIN table4 mISF ON mISF.StateFluxId = mIS.StateFluxId
WHERE (
iu.RelationId = 1
OR iu.RelationId = 2
)

Answer 2

Based on your code I have added the XML PATH () .Please do necessary changes according to your requirement
select i.App_Id as ApplicationId,
Cast(i.ObjectId as NVARCHAR(50)) as ObjectId,
1 as ActivityId,
Cast(case
when oh.ObjectId is null then 0
else 1
end as BIT) as Highlight,
stuff(
(
SELECT ',' + CAST(IU.USERID AS VARCHAR(10))
FROM table1 t2 WHERE iu.IdeaID = t2.IdeaID
FOR XML PATH('')
)
,1,1,'') AS USERID
from table0 i
inner join table1 iu
on i.IdeaID = iu.IdeaID
left join table2 oh
on oh.ObjectId = i.IdeaID
left join table3 mIS
on i.IdeaID = mIS.IdeaID
AND mIS.EndTime is null
inner join table4 mISF
on mISF.StateFluxId = mIS.StateFluxId
where (iu.RelationId = 1 or iu.RelationId = 2)
GROUP BY i.App_Id
,i.ObjectId,
oh.ObjectId