From: | Greg Stark <gsstark(at)mit(dot)edu> |
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To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)postgresql(dot)org, Josh Berkus <josh(at)agliodbs(dot)com> |
Subject: | Re: per-tablespace random_page_cost/seq_page_cost |
Date: | 2009-11-01 12:43:57 |
Message-ID: | 407d949e0911010443l11f5390fm6545b8ea830be096@mail.gmail.com |
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Lists: | pgsql-hackers |
On Sat, Oct 31, 2009 at 6:04 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> Looking at this a little more, it seems that part of the motivation
> for the existing design is that user-created AMs might require
> arbitrary options, which therefore can't be wired into the system
> catalogs. There's no equivalent for tablespaces (we could add one
> some day, I suppose), so there's less intrinsic reason to think we
> have to do it that way.
Can't custom modules define arbitrary options which they declare can
be defined per tablespace?
We could have a column for all booleans, a column for all integers,
etc. but that's not really any more normalized than having a single
column for all the types with a rule for how to marshal each value
type.
--
greg
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