Question

I have few columns in a table

Col1, Col2, Col3, Col4

Now I want to select like this

SELECT DISTINCT (Col1, Col2, Col3), Col4

i.e. get the distinct based on only these three colunms.

Answer 1

From a comment to another answer:

Can I get like this Col1, Col2 , Col3 and (Col4 in delimiter form)

Yes, you can use the for xml path.

select Col1, 
       Col2,  
       Col3, 
       (
        select ',' + T2.Col4
        from YourTable T2
        where T1.Col1 = T2.Col1 and
              T1.Col2 = T2.Col2 and
              T1.Col3 = T2.Col3
        for xml path(''), type
       ).value('substring((./text())[1], 2)', 'varchar(max)') as Col4
from YourTable as T1
group by T1.Col1, T1.Col2, T1.Col3

SQL Fiddle