From: Fabien COELHO <coelho@cri.ensmp.fr>
To: Pavel Stehule <pavel.stehule@gmail.com>
Cc: Daniel Verite <daniel@manitou-mail.org>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: PostgreSQL Developers <pgsql-hackers@postgresql.org>
Subject: Re: Variable substitution in psql backtick expansion
Date: Sun, 2 Apr 2017 09:52:25 +0200 (CEST)
Message-ID: <alpine.DEB.2.20.1704020947290.4632@lancre> (raw)
In-Reply-To: <CAFj8pRDCfLLNfMyNAjDwgHXS7inThdqgCaSbfKpiYXkb6Mvmwg@mail.gmail.com>
References: <bc15034d-b421-42ac-89b1-c3485fa1728b@manitou-mail.org>
<alpine.DEB.2.20.1704020841490.4632@lancre>
<CAFj8pRDCfLLNfMyNAjDwgHXS7inThdqgCaSbfKpiYXkb6Mvmwg@mail.gmail.com>
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> For this case can be nice to have function that returns server version as
> number
>
> some like version_num() .. 10000
Another possible trick to get out of a script which does not support \if,
relying on the fact that the unexpected command is simply ignored:
-- exit version below 10
\if false
\echo 'script requires version 10 or better'
\q
\endif
Also possible but less informative on errors:
\set ON_ERROR_STOP on
\if false \endif
--
Fabien.
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To: pgsql-hackers@postgresql.org
Cc: coelho@cri.ensmp.fr, pavel.stehule@gmail.com, daniel@manitou-mail.org, tgl@sss.pgh.pa.us
Subject: Re: Variable substitution in psql backtick expansion
In-Reply-To: <alpine.DEB.2.20.1704020947290.4632@lancre>
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