From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
cc: Dmitry Dolgov <9erthalion6@gmail.com>,
        Aleksander Alekseev <a.alekseev@postgrespro.ru>,
        Tomas Vondra <tomas.vondra@2ndquadrant.com>,
        Pavel Stehule <pavel.stehule@gmail.com>,
        PostgreSQL Hackers <pgsql-hackers@postgresql.org>,
        David Steele <david@pgmasters.net>
Subject: Re: [Patch] Temporary tables that do not bloat pg_catalog (a.k.a fast
 temp tables)
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Comments: In-reply-to Robert Haas <robertmhaas@gmail.com>
	message dated "Sun, 07 Aug 2016 14:35:32 -0400"
Date: Sun, 07 Aug 2016 14:46:06 -0400
Message-ID: <14212.1470595566@sss.pgh.pa.us>
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Robert Haas <robertmhaas@gmail.com> writes:
> I think the whole idea of a fast temporary table is that there are no
> catalog entries.  If there are no catalog entries, then dependencies
> are not visible.  If there ARE catalog entries, to what do they refer?
>  Without a pg_class entry for the table, there's no table OID upon
> which to depend.

TBH, I think that the chances of such a design getting committed are
not distinguishable from zero.  Tables have to have OIDs; there is just
too much code that assumes that.  And I seriously doubt that it will
work (for any large value of "work") without catalog entries.

			regards, tom lane


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