>>I'm trying to refactor a poor DB design that has resulted in many duplicate rows. (about 80,000 rows out of 190,000 rows are dupes.
>>I understand how to delete the duplicates, but I am unsure how to propogate the PK of the rows I keep to children of the duplicates, IOW I'm trying to map 1 onto many.
>>
>>Am I making any sense?
>>
>>Thanks for any ideas.
>
>Should the PK become FK for the child table? What exactly is the problem here?
>
>I think I got the problem now. You need to re-map all the children of the original duplicate records you deleted to the IDs which are left as unique.
>
>Sounds to me you need to use temp table with the original IDs and the ID of the records which are left and then re-map everything.

I went with the temp table and it worked like a charm. Thanks.