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From: Tom Lane <[email protected]>
To: Álvaro Herrera <[email protected]>
Cc: Bertrand Drouvot <[email protected]>
Cc: Michael Paquier <[email protected]>
Cc: Chao Li <[email protected]>
Cc: L. pgsql-hackers <[email protected]>
Cc: Fujii Masao <[email protected]>
Cc: Peter Eisentraut <[email protected]>
Cc: Jeff Davis <[email protected]>
Cc: Ashutosh Bapat <[email protected]>
Cc: Amit Kapila <[email protected]>
Subject: Re: Fix unqualified catalog references in psql describe queries
Date: Mon, 15 Jun 2026 13:22:56 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

=?utf-8?Q?=C3=81lvaro?= Herrera <[email protected]> writes:
> My proposal would be that all operators, both system-defined as well as
> user-defined, live in a single namespace -- not that we forbid them from
> being created.

Exactly how does that improve anyone's life?  It will certainly not
improve query security, rather the reverse.  You could no longer put
less-trusted stuff into a schema that's not in your search_path.

Yes, it would stop people from creating operators that are exact
duplicates of system operators, but those are not the problem:
user-defined operators like that are already masked by the lookup
rules, assuming that pg_catalog is searched first as is the normal
case.  The thing that is dangerous is a user-defined operator that
is made to capture cases that lack an exact system-operator match
(say, varchar = text).  AFAICS your proposal puts those on exactly the
same footing as system-defined operators, and there is no recourse.

			regards, tom lane

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