Re: Fix unqualified catalog references in psql describe queries

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Michael Paquier <michael(at)paquier(dot)xyz>
Cc: Bertrand Drouvot <bertranddrouvot(dot)pg(at)gmail(dot)com>, Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com>, Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Peter Eisentraut <peter(at)eisentraut(dot)org>, Jeff Davis <pgsql(at)j-davis(dot)com>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
Subject: Re: Fix unqualified catalog references in psql describe queries
Date: 2026-06-10 02:12:48
Message-ID: 1236173.1781057568@sss.pgh.pa.us
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Michael Paquier <michael(at)paquier(dot)xyz> writes:
> On Tue, Jun 09, 2026 at 09:08:50AM +0000, Bertrand Drouvot wrote:
>> Now I wonder if we shoud not "protect" the operators too. They could also
>> lead to wrong results (if not worst).

> Kind of true. Still we have been pretty lax about the operators as
> they also lead to less readable queries.

We disclaimed security against odd search_paths for these queries long ago,
precisely because wrapping every operator in PG_OPERATOR(pg_catalog.*)
would be far too tedious and destructive of readability --- not to
mention that there are some syntaxes such as IN that don't even offer
the option to do that.

I'm okay with schema-qualifying these table references, mainly because
that preserves consistency with historical style here. But let's not
go further than that.

regards, tom lane

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