[PHP] MySQL Query Puzzle

[Peter]

Hi All,

I have a  table which contain's some duplicate rows. I just want to 
delete the duplicate records alone
not original records.
Assume my table as look as below

column1 column2
1
        a
1
        a
2
        b
3
        c
3
        c



i want the above table need  to be as below, After executing the mysql 
query.

column1
        column2
1
        a
2
        b
3
        c




Thanks in advance..

Regards
Peter