Question

TABLE-A have the data as follows:

COLUMN1   COLUMN2
1         A
1         B
1         C
2         A
2         G
3         F
4         T
4         K

I want the RESULT as follows:

COLUMN1   COLUMN2
1         A,B,C
2         A,G
3         F
4         T,K

Answer 1

Description

You can use the T-SQL function STUFF for that.

Sample

SELECT COLUMN1, STUFF((
    select ','+ COLUMN2
    from YourTableName b
    WHERE a.COLUMN1 = b.COLUMN1
    FOR XML PATH('')
    )
    ,1,1,'') AS COLUMN2
FROM YourTableName a
GROUP BY a.COLUMN1

More Information

STUFF (Transact-SQL)