Re: Tracking role modification timestamps in pg_authid / pg_roles

From: Andres Freund <andres(at)anarazel(dot)de>
To: pgsql-hackers(at)lists(dot)postgresql(dot)org, Andrew Dunstan <andrew(at)dunslane(dot)net>, Gabriele Bartolini <gabriele(dot)bartolini(at)enterprisedb(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Tracking role modification timestamps in pg_authid / pg_roles
Date: 2026-08-21 11:32:14
Message-ID: 55A96680-B215-464B-9451-52F2910BDE83@anarazel.de
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Hi,

On August 21, 2026 7:05:15 AM EDT, Andrew Dunstan <andrew(at)dunslane(dot)net> wrote:
>
>On 2026-08-21 Fr 12:40 AM, Andres Freund wrote:
>> Hi,
>>
>> On 2026-08-21 13:07:42 +1000, Gabriele Bartolini wrote:
>>> I'd like to propose adding a small column to pg_authid (rollastupdated
>>> timestamptz), that records when a role was last created or altered, and get
>>> feedback on the idea before polishing it for a commitfest (a working
>>> prototype is attached).
>>>
>>> Why?
>>> Tools that manage PostgreSQL roles declaratively all reconcile in the same
>>> way: given a desired set of roles and attributes, make the live cluster
>>> match it, repeatedly and idempotently.
>> My question is why this is needed for pg_authid and not any of the other
>> catalogs? Adding one-off code for different catalogs one-by-one would ... not
>> be likely to result in good code.
>>
>
>Is the suggestion to track modification times for all catalog objects? I'm not objecting, but that does seem like a pretty substantial change.

I'm not suggesting to do anything. I want to know why pg_authid, given Gabrielle's logic does apply just as much to many other object types. I would bet a fair amount of money that if we add it for authid there will be a lot of patches for other objects. So it seems bogus to just discuss doing this for one catalog in isolation.

Andres

--
Sent from my phone. Please excuse my brevity.

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