It was not query... Just sentence where some index values in one table not exist in another... So query could be with: • WHERE (col1,col2,col2) NOT IN • WHERE NOT EXISTS • LEFT JOIN live USING (col1,col2,col2) WHERE live.id IS NULL what ever whoever prefer more or what gives better results... But I think it is more personal feelings which is better then real... Sent from my Windows Phone From: Jochen Erwied Sent: 07/01/2012 15:18 To: Misa Simic Cc: pgsql-performance@xxxxxxxxxxxxxx Subject: Re: Duplicate deletion optimizations Saturday, January 7, 2012, 3:02:10 PM you wrote: > • insert into live from temp where col1, col2 and col3 not exists in > live 'not exists' is something I'm trying to avoid, even if the optimizer is able to handle it. -- Jochen Erwied | home: jochen@xxxxxxxxx +49-208-38800-18, FAX: -19 Sauerbruchstr. 17 | work: joe@xxxxxxxxxxxxxxx +49-2151-7294-24, FAX: -50 D-45470 Muelheim | mobile: jochen.erwied@xxxxxxxxxxx +49-173-5404164 -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
