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From: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
To: Erik Rijkers <er@xs4all.nl>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Cc: Sergei Kornilov <sk@zsrv.org>
Cc: Michael Paquier <michael.paquier@gmail.com>
Cc: Jaime Casanova <jaime.casanova@2ndquadrant.com>
Subject: Re: [HACKERS] generated columns
Date: Thu, 17 Jan 2019 08:54:46 +0100
Message-ID: <555e1856-1aea-d6b2-618f-0429655a0d82@2ndquadrant.com> (raw)
In-Reply-To: <17fd00ff02ede468e2a3d63ff8cd5ff7@xs4all.nl>
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>
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	<20180131131804.GB1586@paquier.xyz>
	<bf9c8765-1aa0-432a-442e-45f715ebe4e7@2ndquadrant.com>
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	<79e4de23-52e3-2c45-9ba0-5f6932f590aa@2ndquadrant.com>
	<28574501540912440@iva5-750e13568e4d.qloud-c.yandex.net>
	<2ddd0bfa-0fcd-35ec-266c-f03cf72fc581@2ndquadrant.com>
	<26129f50-cf47-2013-8f9b-e7a98853aa69@2ndquadrant.com>
	<17fd00ff02ede468e2a3d63ff8cd5ff7@xs4all.nl>

On 16/01/2019 22:40, Erik Rijkers wrote:
> I couldn't compile v7-0001 and I am testing with the older v6-0001 (of 
> which I still had an instance).
> 
> So the problem below may have been fixed already.
> 
> If you add a generated column to a file_fdw foreign table, it works OK 
> wih VIRTUAL (the default) but with STORED it adds an empty column, 
> silently.  I would say it would make more sense to get an error.

Yes, v7 has addressed foreign-data wrappers.  (I only tested with
postgres_fdw.)

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services




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