Received: from maia.hub.org (maia-2.hub.org [200.46.204.251]) by mail.postgresql.org (Postfix) with ESMTP id 65D09B5DBC0 for ; Tue, 27 Sep 2011 06:00:57 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.251]) (amavisd-maia, port 10024) with ESMTP id 94584-10 for ; Tue, 27 Sep 2011 09:00:51 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0-rc2 Received: from mail-yx0-f174.google.com (mail-yx0-f174.google.com [209.85.213.174]) by mail.postgresql.org (Postfix) with ESMTP id 61F0CB5DBDB for ; Tue, 27 Sep 2011 06:00:51 -0300 (ADT) Received: by yxl31 with SMTP id 31so5080350yxl.19 for ; Tue, 27 Sep 2011 02:00:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=rBCxj1qnE/QAexkbOxXeEVCzhUxiAnGhNMPe5FYOA/o=; b=EFy/US8OjLd1cPLbJe5yE0ayWoucFvttJNY97pAB+hTdXjfl6iMupoA/xrv2ywLxOc m73C4tx61czWaM53J9heRdzOGZBgjv3zrzR13pkh+kwdK79HV5ycoI2pJoKTRGl5KpGN y4D23upiSYV3MmIWoQ76JeOCPfa4j5g+/OveA= Received: by 10.68.17.136 with SMTP id o8mr23228041pbd.104.1317114051028; Tue, 27 Sep 2011 02:00:51 -0700 (PDT) Received: from [192.168.1.4] ([116.231.56.18]) by mx.google.com with ESMTPS id y5sm82496283pbe.6.2011.09.27.02.00.44 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 27 Sep 2011 02:00:49 -0700 (PDT) Message-ID: <4E8190A8.7030408@gmail.com> Date: Tue, 27 Sep 2011 17:00:24 +0800 From: Rural Hunter User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:6.0.2) Gecko/20110902 Thunderbird/6.0.2 MIME-Version: 1.0 To: pgsql-admin@postgresql.org Subject: Is there a list of pg pre-defined functions? Content-Type: text/plain; charset=GB18030; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.889 tagged_above=-10 required=5 tests=BAYES_00=-1.9, FREEMAIL_FROM=0.001, T_TO_NO_BRKTS_FREEMAIL=0.01 X-Spam-Level: X-Archive-Number: 201109/196 X-Sequence-Number: 38433 I am looking for something like a string hash function to order a string cloumn randomly.