T-SQL convert rows to comma-separated string, with a GROUP BY

Hello my under-apprecitated SQL genius buddies..

I have a two-column SQL 2012 table (disguised to protect the innocent), one of which is a group name, and one is numbers
IF OBJECT_ID('tempdb..test') IS NOT NULL
   DROP TABLE #test
GO

CREATE TABLE #test (
   group_name varchar(10), 
   id int
)

insert into #test (group_name, ID) 
values 
   ('red', 101), ('red', 102), ('blue', 103), ('blue', 104), ('hazel', 105), ('mauve', 106),
   ('grape', 107), ('red', 108), ('blue', 109), ('purple', 110), ('grape', 111), ('red', 112)

Open in new window

I need to generate some T-SQL, using FOR XML PATH I think but am not sure, to group by the group_name column, and return all of the ID's as a comma-separated string, like...

group_name    id_list
red              101, 102, 108, 112
blue            103, 104, 109
hazel          105
mauve        106,
grape          107, 111
purple        110

Thanks in advance.
Jim
LVL 66
Jim HornMicrosoft SQL Server Developer, Architect, and AuthorAsked:
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Brian CroweDatabase AdministratorCommented:
SELECT DISTINCT group_name,
      STUFF(
      (
            SELECT ',' + CAST(id AS VARCHAR)
            FROM #test AS t2
            WHERE t2.group_name = t.group_name
            FOR XML PATH('')
      ), 1, 1, '') AS id_list
FROM #test AS t
0

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Jim HornMicrosoft SQL Server Developer, Architect, and AuthorAuthor Commented:
Looks like a winner.  Thanks.
0
Ashutosh` PandeyCommented:
Thanks...Its working Fine
0
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