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Re: per-tablespace random_page_cost/seq_page_cost

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: David Fetter <david(at)fetter(dot)org>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>,Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)postgresql(dot)org,Greg Stark <gsstark(at)mit(dot)edu>, Josh Berkus <josh(at)agliodbs(dot)com>
Subject: Re: per-tablespace random_page_cost/seq_page_cost
Date: 2009-10-28 02:01:54
Message-ID: 20091028020153.GP4876@alvh.no-ip.org (view raw or flat)
Thread:
Lists: pgsql-hackers
David Fetter escribió:
> On Tue, Oct 27, 2009 at 09:13:29PM -0400, Tom Lane wrote:
> > Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> > > I confess that I'm a bit mystified about the design of the
> > > reloptions stuff. It seems kind of odd to store structured data as
> > > text[]; it's kind of the opposite of what I would normally
> > > recommend as good database design.
> > 
> > It's definitely a bit EAV-ish :-(.  But I don't see any particularly
> > easy way to modify it to store bool/int/float parameters in their
> > native types; do you?
> 
> More columns, each of the correct type, with the table constraint that
> at most one may be populated is how I handle stuff like that.

So we would have "spcintoptions", "spcfloatoptions", and so on?  (I
don't see the need for the table constraint in this case.)

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.

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