Re: CATUPDATE confusion?

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Stephen Frost <sfrost(at)snowman(dot)net>
Cc: Adam Brightwell <adam(dot)brightwell(at)crunchydatasolutions(dot)com>, Peter Eisentraut <peter_e(at)gmx(dot)net>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Noah Misch <noah(at)leadboat(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: CATUPDATE confusion?
Date: 2015-03-13 13:21:46
Message-ID: CA+TgmoZshwViqpXO7G_qmoALyi1v3FGAn3aBJwwRTzGw=0ZBgw@mail.gmail.com
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On Thu, Mar 12, 2015 at 10:36 PM, Stephen Frost <sfrost(at)snowman(dot)net> wrote:
> As near as I can tell, pgAdmin3 does still use pg_user (though I don't
> think it uses pg_group or pg_shadow except when connected to an ancient
> server) in some cases. Where it is used, based on my quick review at
> least, it looks like it'd be pretty easy to fix.
>
> The rolcatupdate usage appears to all be associated with pg_authid
> though, and the changes required to remove the places where it shows up
> doesn't look particularly bad either. There are no references to
> usecatupdate. Where there are references to 'use*', they'd have to also
> be updated with the change to pg_user, naturally.
>
> Looking at phppgadmin, there are quite a few more uses of pg_user there,
> along with references to pg_group and even pg_shadow (for 8.0 and
> earlier backends). Amusingly, the only place 'catupdate' is referenced
> there is in the Polish language file. Updating phppgadmin to not
> reference pg_user or the other views looks like it'd be a bit more work,
> but not a huge effort either.
>
> Basically, in my view at least, these programs are likely to continue to
> use these backwards compatibility views until we either formally
> deprecate them or (more likely) until we actually remove them and things
> break. As such, I'm not sure if this information really helps us make a
> decision here.

After poking at this a bit, I am guessing the reason they still use
pg_user is that regular users don't have permission to access
pg_authid directly. We don't want to make it impossible for pgAdmin
to work for non-superusers.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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