public inbox for [email protected]  

help / color / mirror / Atom feed

From: Tom Lane <[email protected]>
To: Pavel Stehule <[email protected]>
Cc: Ron Johnson <[email protected]>
Cc: pgsql-general <[email protected]>
Subject: Re: Request for new column in pg_namespace
Date: Sun, 15 Dec 2024 12:29:26 -0500
Message-ID: <[email protected]> (raw)
In-Reply-To: <CAFj8pRDxMpQv4P3Bi-zEQ+OQ2dsVCZ+g-vbpU-F3qvozZKjUzA@mail.gmail.com>
References: <CANzqJaCCF9kpfdbWbRR2xuqH_qaBgL+me13w2c-5S=_YATKh+Q@mail.gmail.com>
	<CAFj8pRDxMpQv4P3Bi-zEQ+OQ2dsVCZ+g-vbpU-F3qvozZKjUzA@mail.gmail.com>

Pavel Stehule <[email protected]> writes:
> ne 15. 12. 2024 v 17:59 odesílatel Ron Johnson <[email protected]>
> napsal:
>> A new boolean column named "indissystem" that's true only for system
>> relations would make *many* maintenance queries cleaner, since they'd
>> look like:
>> select ...

> oid of all system objects is less then 0x4000

That wouldn't help for excluding temp schemas, and it's not totally
trustworthy for information_schema either.

But I think the real problem with Ron's proposal is that it presumes
there is a one-size-fits-all notion of "system schema".  As a
counterexample, for some maintenance activities (such as vacuuming)
you might wish to process pg_catalog.

What I'd suggest as an improvement that could be implemented
immediately is to wrap the checks in a user-defined function
like "is_system_schema(nspname name)".

			regards, tom lane

view thread (4+ messages)  latest in thread

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected], [email protected], [email protected]
  Subject: Re: Request for new column in pg_namespace
  In-Reply-To: <[email protected]>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox