Re: How to delete duplicate rows?

Can you not use your table's primary key value instead?

If you table is created with OIDs you may be able to use those -
although I don't know if that this advisable or not since I never use
OIDs...

John Sidney-Woollett

Clodoaldo Pinto wrote:

> This one must be obvious for most here.
>
> I have a 170 million rows table from which I want to eliminate
> duplicate "would be" keys and leave only uniques.
>
> I found a query in http://www.jlcomp.demon.co.uk/faq/duplicates.html
> for the oracle database but can't figure out how to refer to the row
> id in postgresql:
>
> delete from test where rowid not in
> (select min(rowid) from test group by a,b);
>
> How to refer to the row id? Any better way to do it?
>
> Regards, Clodoaldo Pinto
>
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