pg.ddx.io  pgsql-hackers@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
To: Sergei Kornilov <sk@zsrv.org>
To: pgsql-hackers <pgsql-hackers@postgresql.org>
Cc: Michael Paquier <michael.paquier@gmail.com>
Cc: Jaime Casanova <jaime.casanova@2ndquadrant.com>
Subject: Re: [HACKERS] generated columns
Date: Tue, 6 Nov 2018 13:27:16 +0100
Message-ID: <2ddd0bfa-0fcd-35ec-266c-f03cf72fc581@2ndquadrant.com> (raw)
In-Reply-To: <28574501540912440@iva5-750e13568e4d.qloud-c.yandex.net>
References: <b151f851-4019-bdb1-699e-ebab07d2f40a@2ndquadrant.com>
	<CAJGNTeOxeQPFpEr35PME4yLayRzP_wwzt70kFrPztSTWHf-HDA@mail.gmail.com>
	<CAJGNTeM+MCjA4dBhAdjJ-vR_CwY3u65cCcc+KvnahzLHZjxjbw@mail.gmail.com>
	<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>
	<bf9c8765-1aa0-432a-442e-45f715ebe4e7@2ndquadrant.com>
	<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>

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




view thread (112+ messages)  latest in thread

Message-ID: <2ddd0bfa-0fcd-35ec-266c-f03cf72fc581@2ndquadrant.com>
Permalink:  ../2ddd0bfa-0fcd-35ec-266c-f03cf72fc581@2ndquadrant.com/
Also on:    postgresql.org/message-id/2ddd0bfa-0fcd-35ec-266c-f03cf72fc581@2ndquadrant.com

 · 

reply
Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-hackers@postgresql.org
  Cc: peter.eisentraut@2ndquadrant.com, sk@zsrv.org, michael.paquier@gmail.com, jaime.casanova@2ndquadrant.com
  Subject: Re: [HACKERS] generated columns
  In-Reply-To: <2ddd0bfa-0fcd-35ec-266c-f03cf72fc581@2ndquadrant.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox