This is what I have....
P-id P-SKU P-SKU C-id
88438 CATDJ AC1030812 528
88439 CATPD AC1030812 168
88440 CATSE AC1030812 532
88441 CLA96001 AC2061414 528
88442 CLA96007 AC2061414 531
88443 CLA96009 AC2061414 28
88444 CLA96012 AC2061414 532


This is what I need..
P-id = P-SKU P-SKU = C-id

into this...

P-id = C-id

I have a list of about 18000 rows of P-SKU C-id
and 800 rows of P-id P-SKU of single P-id and single P-SKU

any ideas thanks guys