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Re: Query Optimizer + Parallel Operators

From: Dusan Misic <promisic(at)gmail(dot)com>
To: Josh Berkus <josh(at)agliodbs(dot)com>
Cc: "Felix Schmidt (at) Oracle" <felix(dot)x(dot)schmidt(at)oracle(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Query Optimizer + Parallel Operators
Date: 2011-01-27 07:07:34
Message-ID: AANLkTi=aKf_HVzx7TS4MHCwphCuPz+i_Qr3nEFiSBxKo@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
This is kinda scary .....

Oracle guy asking for PostgreSQL documentation and internals of the
optimizer.



On Thu, Jan 27, 2011 at 12:14 AM, Josh Berkus <josh(at)agliodbs(dot)com> wrote:

> Felix,
>
> > I'm interested in the query optimizer of PostgreSQL DB. Where could I
> > find useful documentation or could you send me a pointer in the source
> code?
> >
> > What kind of parallelism does PostgreSQL use for operators, like
> > selection or join?
>
> Normally we're very helpful with this kind of information ... it's all
> public after all ... but I have to say that the domain you're e-mailing
> from makes it a little hard to give you a direct answer.
>
> Could you maybe give us a little information about what you want this
> information for?
>
> --
>                                  -- Josh Berkus
>                                     PostgreSQL Experts Inc.
>                                     http://www.pgexperts.com
>
> --
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