Re: tablespace and sequences?

From: Philip Warner <pjw(at)rhyme(dot)com(dot)au>
To: Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>
Cc: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Treat <xzilla(at)users(dot)sourceforge(dot)net>, PostgreSQL Developers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: tablespace and sequences?
Date: 2004-08-20 08:34:53
Message-ID: 6.1.1.1.0.20040820182930.07690f38@203.8.195.10
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At 06:14 PM 20/08/2004, Fabien COELHO wrote:
>This prior SET option looks much better and cleaner. Maybe the TOC entry
>update is not really necessary if the SET is separate?

I'd prefer if it was separate since we want to minimize the number of
multi-statement TOC entries...I think. A new TOC entry is close to zero
cost. Reformatting the TOC to include the tablespace name is more
expensive, but there are a few things I'd like to add, so it's worth it.

>If the SET fails, what tablespace is expected to be chose?

Good question. Is there a name for the normal/default/whatever tablespace?
Tom may need to implement:

SET DEFAULT TABLESPACE AS FRED
SET DEFAULT TABLESPACE DEFAULT

or something less tacky, but allowing for the default to be derived from
the schema & database rather than the last SET command. The pg_dump will
need to check the result of the SET command and reset the tablespace if it
fails...and probably die if that fails.

>I can give a hand about the implementation over the week-end, esp. as I'm
>the one taking a stand on this issue. However I do not know much about
>pg_dump format and issues, so I'm not sure I'm the best person for a quick
>and clean implementation.

I'm happy to do the pg_dump changes, assuming Tom gets the SET stuff sorted
out. But would appreciate it if you could do some testing.

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