Received: from localhost (unknown [200.46.208.211]) by mail.postgresql.org (Postfix) with ESMTP id 0524A632C55 for ; Mon, 13 Apr 2009 18:43:05 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by localhost (mx1.hub.org [200.46.208.211]) (amavisd-maia, port 10024) with ESMTP id 30840-06 for ; Mon, 13 Apr 2009 18:42:58 -0300 (ADT) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail-gx0-f172.google.com (mail-gx0-f172.google.com [209.85.217.172]) by mail.postgresql.org (Postfix) with ESMTP id 4A9AA6321A9 for ; Mon, 13 Apr 2009 18:43:03 -0300 (ADT) Received: by gxk20 with SMTP id 20so29788gxk.19 for ; Mon, 13 Apr 2009 14:43:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=P4FeVultAeO+7DkVCNRbcKsSJ9Vx0nA0r+yJe3DXnkc=; b=D+v0EVTVLWAmhYs73opH9HCp6x9O27Urp41FLdDPUN359ty+URY8LhFc0MQRIKqI5g yVGlAf6msU1xVVa8CG5oeLaR9MW06xkzfvSLEN8Z2kAEK/+j4ezKosGUGInuJD9PL4s5 moN2FSVi1p9tVIkp7fpqxMJ9pLCdLQorm3xzc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=aFjeK9TKzTAqtLaxZ9YClpOpGpDlV4CCRpd+KdzKpOHDuB2CTg4+Dqa1hT8tBGtvWi G0NROwiDnPeJGRFho3VXYSWFFJfSfuLcLouO9MbdccWftVMrZfyIRX7KtVE5d5hGlbUC 6NkZ6UTRdr48Cv7TOdycXNpYaDeUATAz188WE= MIME-Version: 1.0 Received: by 10.150.97.20 with SMTP id u20mr9128470ybb.214.1239658981812; Mon, 13 Apr 2009 14:43:01 -0700 (PDT) In-Reply-To: References: <49DC1034.1060705@frii.com> <49E37441.6030301@frii.com> <396486430904131418g3898dc5h2472f9efab331489@mail.gmail.com> Date: Mon, 13 Apr 2009 14:43:01 -0700 Message-ID: <396486430904131443w72ded091qe59c709c76dd0960@mail.gmail.com> Subject: Re: changing multiple pk's in one update From: Richard Broersma To: Glenn Maynard Cc: pgsql-sql@postgresql.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=0 tagged_above=0 required=5 tests=none X-Spam-Level: X-Archive-Number: 200904/65 X-Sequence-Number: 32411 On Mon, Apr 13, 2009 at 2:32 PM, Glenn Maynard wr= ote: >=A0If your senses are reordered by someone else, and > you operate on /10/3, you may suddenly find yourself viewing or > modifying (or deleting!) a different sense. =A0This could even happen > within the same transaction, if you're not very careful with > locking...