Re: OID's - Mailing list pgsql-general

From Tino Wildenhain
Subject Re: OID's
Date
Msg-id 1100612512.21062.649.camel@sabrina.peacock.de
Whole thread Raw
In response to Re: OID's  (Holger Klawitter <lists@klawitter.de>)
List pgsql-general
On Tue, 2004-11-16 at 12:32, Holger Klawitter wrote:
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>
> A little bit OT, but:
>   is there a way of removing duplicate rows in a table without OIDs?
>

ALTER TABLE ... ADD COLUMN myoid int;
CREATE TEMP SEQUENCE myoidsequence;
UPDATE ... SET myoid=nextval('myoidsequence');

then do the usual

SELECT a.* FROM ... a, ... b WHERE a.something=b.something AND
a.myoid<b.myoid;

Dance and if you are done with it,
ALTER TABLE ... DROP COLUMN myoid;
DROP TEMP SEQUENCE myoidsequence;

HTH
Tino


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