Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1gK0SA-0006ib-BX for pgsql-hackers@arkaria.postgresql.org; Tue, 06 Nov 2018 12:27:30 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1gK0S8-0005jz-9D for pgsql-hackers@arkaria.postgresql.org; Tue, 06 Nov 2018 12:27:28 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1gK0S7-0005js-7z for pgsql-hackers@lists.postgresql.org; Tue, 06 Nov 2018 12:27:28 +0000 Received: from wout1-smtp.messagingengine.com ([64.147.123.24]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1gK0S3-00055O-CR for pgsql-hackers@postgresql.org; Tue, 06 Nov 2018 12:27:26 +0000 Received: from compute7.internal (compute7.nyi.internal [10.202.2.47]) by mailout.west.internal (Postfix) with ESMTP id 470A4E57; Tue, 6 Nov 2018 07:27:20 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute7.internal (MEProxy); Tue, 06 Nov 2018 07:27:20 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; bh=k4jtPbnBF1MmsDs49y1F8GYIOY9KkkikPOproEHPw ME=; b=tHrkluDcJva5x5yTBvLwzzqTy/UkblGDzO117NEw9PgBLsPfCCvHBHq9g ZTd5cnmkMhyjHOuQt04RWJcVn/WfffrvWSj7xC5Zh4H6UnnAXwO/qs6SgmlYhIdL xobIovOAyAduTM6VeDPytUEabp0agjx2LBGfs3phFsb2ASQqTk4iyGKaL/qhKFQc QAe6JVZE7yJezH5mJGQuE2np0fKALN0H3x0Bp+cwTd36M/nr1CfzzHwdBWl20H6R hNTrS1zMsjBEZtmrCKRtlq0Y4L5DXFRr1P0qOyuvLGHv9upw40OcE6pvBjYxolk8 Z9e3O59a/BDsoR4MWWuTZTK1tD0MA== X-ME-Sender: X-ME-Proxy: Received: from april.pezone.net (p5df295f3.dip0.t-ipconnect.de [93.242.149.243]) by mail.messagingengine.com (Postfix) with ESMTPA id 0CD44102DD; Tue, 6 Nov 2018 07:27:17 -0500 (EST) Subject: Re: [HACKERS] generated columns To: Sergei Kornilov , pgsql-hackers References: <1bc948f8-3bab-6c54-50af-c0723a75b85f@2ndquadrant.com> <20180116063546.GA3679@paquier.xyz> <48502d9b-60c4-5b10-40a2-e34f562132b4@2ndquadrant.com> <20180119051804.GC12826@paquier.xyz> <2e3d5147-16f8-af0f-00ab-4c72cafc896f@2ndquadrant.com> <20180131131804.GB1586@paquier.xyz> <20180202022532.GA84623@paquier.xyz> <050e663d-d915-f61b-af96-5a09c10ade02@2ndquadrant.com> <79e4de23-52e3-2c45-9ba0-5f6932f590aa@2ndquadrant.com> <28574501540912440@iva5-750e13568e4d.qloud-c.yandex.net> Cc: Michael Paquier , Jaime Casanova From: Peter Eisentraut Openpgp: preference=signencrypt Autocrypt: addr=peter.eisentraut@2ndquadrant.com; 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Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <28574501540912440@iva5-750e13568e4d.qloud-c.yandex.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On 30/10/2018 16:14, Sergei Kornilov wrote: > Hi > > I applied this patch on top 2fe42baf7c1ad96b5f9eb898161e258315298351 commit and found a bug while adding STORED column: > > postgres=# create table test(i int); > CREATE TABLE > postgres=# insert into test values (1),(2); > INSERT 0 2 > postgres=# alter table test add column gen_stored integer GENERATED ALWAYS AS ((i * 2)) STORED; > ALTER TABLE > postgres=# alter table test add column gen_virt integer GENERATED ALWAYS AS ((i * 2)); > ALTER TABLE > postgres=# table test; > i | gen_stored | gen_virt > ---+------------+---------- > 1 | | 2 > 2 | | 4 > > Virtual columns was calculated on table read and its ok, but stored column does not update table data. This is a small bug that I will fix in my next update. -- Peter Eisentraut http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services