Re: Applying TOAST to CURRENT

From: The Hermit Hacker <scrappy(at)hub(dot)org>
To: Hannu Krosing <hannu(at)tm(dot)ee>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Jan Wieck <JanWieck(at)Yahoo(dot)com>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, PostgreSQL HACKERS <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Applying TOAST to CURRENT
Date: 2000-05-30 21:14:07
Message-ID: Pine.BSF.4.21.0005301813330.474-100000@thelab.hub.org
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On Tue, 30 May 2000, Hannu Krosing wrote:

> The Hermit Hacker wrote:
> >
> > On Tue, 30 May 2000, Tom Lane wrote:
> > >
> > > I agree with Bruce --- the toast table should be created automatically,
> > > at least if the table contains any potentially-toastable columns. We
> > > want this to be as transparent as possible. I'd rather have auto create
> > > on-the-fly when first needed, but if that seems too risky then let's
> > > just make the table when its owning table is created.
> >
> > have to third this one ... I think it should be totally transparent to the
> > admin/user ... just create it when the table is created, what's the worst
> > case scenario? it never gets used and you waste 16k of disk space?
>
> You dont even use 16k if toast tables are like ordinary tables (which I
> guess they are). New empty tables seem to occupy 0k.
>
> So I'm also for immediate creation of tost tables for all tables that
> require them, either at create (if there are any toastable columns in
> the create clause) or at alter table time if first toestable column is
> added after initial create.
>
> The only drawback is bloating directories, but it was already suggested
> that
> TOAST tables could/should be kept in subdirectory toast (as should
> indexes
> too, imho).

still say, simplest "fix":

<dbname>/{system,db,toast,index}

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