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From: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Andres Freund <andres@anarazel.de>
Cc: Corey Huinker <corey.huinker@gmail.com>
Cc: Andrew Dunstan <andrew@dunslane.net>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Joe Conway <mail@joeconway.com>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: Nikita Glukhov <n.gluhov@postgrespro.ru>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: Error-safe user functions
Date: Wed, 07 Dec 2022 13:00:38 -0500
Message-ID: <4043604.1670436038@sss.pgh.pa.us> (raw)
In-Reply-To: <4042204.1670435489@sss.pgh.pa.us>
References: <85e40849-4458-bbb9-62ee-d9e7faf0c7dc@dunslane.net>
	<3323802.1670263204@sss.pgh.pa.us>
	<3496391.1670276406@sss.pgh.pa.us>
	<20221205234734.sab3fuxy6q2sokjd@alap3.anarazel.de>
	<3518534.1670285891@sss.pgh.pa.us>
	<20221206005607.lxcrazckoalptwds@alap3.anarazel.de>
	<3523582.1670288815@sss.pgh.pa.us>
	<40ff1ed1-4245-e343-bffa-c7755b031492@dunslane.net>
	<CADkLM=coVJ0Hy-yYtXbN_dhfc453zs_BUTTPHmJqv12Urkd79g@mail.gmail.com>
	<3889877.1670358069@sss.pgh.pa.us>
	<20221207173427.7jmjd3fsfuydh6th@awork3.anarazel.de>
	<4042204.1670435489@sss.pgh.pa.us>

I wrote:
> Andres Freund <andres@anarazel.de> writes:
>> Is there a guarantee that input functions are stable or immutable?

> There's a project policy that that should be true.  That justifies
> marking things like record_in as stable --- if the per-column input
> functions could be volatile, record_in would need to be as well.
> There are other dependencies on it; see e.g. aab353a60, 3db6524fe.

I dug in the archives and found the thread leading up to aab353a60:

https://www.postgresql.org/message-id/flat/AANLkTik8v7O9QR9jjHNVh62h-COC1B0FDUNmEYMdtKjR%40mail.gmai...

			regards, tom lane





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