Re: Need a mentor, and a project.

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Ashish <abindra(at)u(dot)washington(dot)edu>, Josh Berkus <josh(at)agliodbs(dot)com>, Joshua Tolley <eggyknap(at)gmail(dot)com>, Albe Laurenz <laurenz(dot)albe(at)wien(dot)gv(dot)at>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Need a mentor, and a project.
Date: 2009-12-12 02:36:55
Message-ID: 200912120236.nBC2atO01675@momjian.us
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Robert Haas wrote:
> On Fri, Dec 11, 2009 at 9:05 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> > Ashish wrote:
> >> I am thinking about starting with the following TODO item:
> >>
> >> --> Have EXPLAIN ANALYZE issue NOTICE messages when the estimated
> >> and actual row counts differ by a specified percentage.
> >>
> >> I picked this because it is somewhat related to query processing
> >> which is what I am most interested in. It also <seems> like a
> >> good start up project for a newbie like me. Before I start
> >> looking into what this would involve and start a conversation
> >> on designing a solution - I wanted to know what you guys think
> >> about this particular TODO, and it suitability to a newbie.
> >> Looking forward to your comments...
> >
> > I even have a sample patch you can use as a start, attached.
>
> Interesting. The logic in ExplainVariance() doesn't look right to me
> - the cases where one argument is zero seem like they will produce a
> differently-scaled result than otherwise.

Yea, it is just a starting point for him.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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