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How to find double entries

From: Andreas <maps(dot)on(at)gmx(dot)net>
To: pgsql-sql(at)postgresql(dot)org
Subject: How to find double entries
Date: 2008-04-16 03:15:43
Message-ID: 48056F5F.30507@gmx.net (view raw or flat)
Thread:
Lists: pgsql-sql
Hi,

how can I find double entries in varchar columns where the content is 
not 100% identical because of a spelling error or the person considered 
it "looked nicer" that way?

I'd like to identify and then merge records of e.g.   'google', 'gogle', 
'guugle' 

Then I want to match abbrevations like  'A-Company Ltd.', 'a company 
ltd.', 'A-Company Limited'

Is there a way to do this?
It would be OK just to list candidats up to be manually checked afterwards.


Regards
Andreas

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Subject: Re: How to find double entries
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