Compare with previous tuple(Row)

[M Zubair Haroon]

Hi! I 'm stuck on a very basic problem, I want to skip the row which has duplicate values over three columns.

Table feeds

id,type,user_id,friend_id,date

1, 'friend', 4 , 5 , 5/5/2010
2, 'friend', 5 , 4 , 5/5/2010

Now since both have same thing, so I want to pick them only as a 1 row not 2.

Now this is how the data is saved (I can't change the saving module)

Need help, thanks