Concatenate column values for rows with the same values (of different columns)

Question

SQL Server 2005

I have a table which returns

ID  name    prop    value
--------------------------
1   one     Prop1   a
1   one     Prop1   b
1   one         


        

Answer 1

SELECT ID
    ,name
    ,prop
    ,STUFF((SELECT ',' + value FROM table t2 WHERE t2.ID = t1.ID and t2.name = t1.name AND t2.prop = t1.prop FOR XML PATH('')),1,1,'') AS value
FROM table t1
GROUP BY ID,name,prop

Please refer: SQL Query to get aggregated result in comma seperators along with group by column in SQL Server