X-Original-To: pgsql-sql-postgresql.org@localhost.postgresql.org Received: from localhost (neptune.hub.org [200.46.204.2]) by svr1.postgresql.org (Postfix) with ESMTP id C18C0D1DA95 for ; Mon, 12 Jan 2004 13:07:15 +0000 (GMT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (neptune.hub.org [200.46.204.2]) (amavisd-new, port 10024) with ESMTP id 45054-09 for ; Mon, 12 Jan 2004 09:06:47 -0400 (AST) Received: from srvr3.iniquinet.com (srvr2.iniquinet.com [64.240.87.12]) by svr1.postgresql.org (Postfix) with SMTP id 39CE9D1DA2C for ; Mon, 12 Jan 2004 09:06:41 -0400 (AST) Received: (qmail 14632 invoked by uid 104); 12 Jan 2004 12:59:15 -0000 Received: from Robert_Creager@LogicalChaos.org by srvr3.iniquinet.com by uid 101 with qmail-scanner-1.15 (clamscan: 0.54. spamassassin: 2.55. Clear:SA:0(-7.8/6.0):. Processed in 36.782594 secs); 12 Jan 2004 12:59:15 -0000 Received: from vsat-148-64-8-86.c119.t7.mrt.starband.net (HELO chaos.mshome.net) (148.64.8.86) by srvr3.iniquinet.com with SMTP; 12 Jan 2004 12:58:38 -0000 Received: from localhost.localdomain (thunder.mshome.net [192.168.0.250]) by chaos.mshome.net (Postfix) with ESMTP id 94A6D1E5004; Mon, 12 Jan 2004 06:05:58 -0700 (MST) Received: from logicalchaos.org (thunder.mshome.net [192.168.0.250]) by chaos.mshome.net (Postfix) with SMTP id 365351E5004; Mon, 12 Jan 2004 06:05:58 -0700 (MST) Date: Mon, 12 Jan 2004 06:05:45 -0700 From: Robert Creager To: Tomasz Myrta Cc: PGSQL Subject: Re: Problem with NOT IN portion of query. Message-Id: <20040112060545.59752f05.Robert_Creager@LogicalChaos.org> In-Reply-To: <40023E79.10705@klaster.net> References: <20040111210454.4ee900ae.Robert_Creager@LogicalChaos.org> <40023E79.10705@klaster.net> Organization: Starlight Vision, LLC. X-Mailer: Sylpheed version 0.9.5claws (GTK+ 1.2.10; i586-mandrake-linux-gnu) Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg="pgp-sha1"; boundary="Multipart_Mon__12_Jan_2004_06_05_46_-0700_=.gu'acKkSeM_bz1" X-Virus-Scanned: by amavisd-new at postgresql.org X-Archive-Number: 200401/93 X-Sequence-Number: 16486 --Multipart_Mon__12_Jan_2004_06_05_46_-0700_=.gu'acKkSeM_bz1 Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable When grilled further on (Mon, 12 Jan 2004 07:28:09 +0100), Tomasz Myrta confessed: > Dnia 2004-01-12 05:04, U=BFytkownik Robert Creager napisa=B3: > >=20 > > SELECT date_trunc( 'hour', "when" )::timestamp AS > > period FROM readings WHERE period NOT IN (SELECT "time" FROM > > hour.summary_period) GROUP BY period ORDER BY period; > >=20 > > The error is: > >=20 > > ERROR: column "period" does not exist > >=20 > Your problem has nothing to "NOT IN". > Your query works fine, when you remove column alias from WHERE clause -= =20 > it's beacause WHERE clause is executed *before* data output (and before= =20 > column aliases). You can still use column aliases in "GROUP BY" and=20 > "ORDER BY". Thanks for the info. So now I have: SELECT p.period FROM (SELECT date_trunc( 'hour', "when" )::timestamp AS per= iod FROM readings GROUP BY period) AS p WHERE p.period NOT IN (SELECT "time" FR= OM hour.summary_period) ORDER BY p.period; which appears works as expected. Anything obviously goofy with the above q= uery? Cheers, Rob --=20 05:57:10 up 14 days, 19:47, 4 users, load average: 2.17, 2.07, 2.04 --Multipart_Mon__12_Jan_2004_06_05_46_-0700_=.gu'acKkSeM_bz1 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (GNU/Linux) iEYEARECAAYFAkACm7UACgkQLQ/DKuwDYzmSkwCcD+7qx42YLyI7GQBSZmak7cPd eOwAmwfYjEle2jPIepvoLZCNEcWfxVyE =kmvI -----END PGP SIGNATURE----- --Multipart_Mon__12_Jan_2004_06_05_46_-0700_=.gu'acKkSeM_bz1--