Andreas wrote:
I need to clean up a lot of contact data because of a merge of customer lists that used to be kept separate. I allready know that there are double entries within the lists and they do overlap, too.

Relevant fields could be  name, street, zip, city, phone

Is there a way to do something like this with postgresql ?

Yes, yes there is. GROUP BY is your friend and there are other friends too. -- Darren Duncan

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