From: andrew <andrew.ylzhou@gmail.com>
To: pgsql-sql@postgresql.org
Subject: Re: filtering after join
Date: Fri, 27 Jan 2006 10:10:31 +0100
Message-ID: <29d3b0b90601270110w645eab52k41ea6e385f297ae4@mail.gmail.com> (raw)
In-Reply-To: <200601261759.31184.peter_e@gmx.net>
References: <29d3b0b90601250927o2a5ee6e6mc33a7647da4438ce@mail.gmail.com>
<200601261222.34906.peter_e@gmx.net>
<29d3b0b90601260454g35817213o7d5a0e8a1e53ddf7@mail.gmail.com>
<200601261759.31184.peter_e@gmx.net>
I can see the final plan by using the EXPLAIN command. But I want to
know the procedure of the planner in handling nesting queries. Can you
direct me to the corresponding part of the code and/or the documents?
Thanks.
On 1/26/06, Peter Eisentraut <peter_e@gmx.net> wrote:
> andrew wrote:
> > How will the query planner do for a nesting query? Treat the
> > subqueries as multiple queries and then link them together?
> > where can I find the information (codes or documents)?
>
> Look at the execution plan using the EXPLAIN command.
>
> --
> Peter Eisentraut
> http://developer.postgresql.org/~petere/
>
--
andrew
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To: pgsql-sql@postgresql.org
Cc: andrew.ylzhou@gmail.com
Subject: Re: filtering after join
In-Reply-To: <29d3b0b90601270110w645eab52k41ea6e385f297ae4@mail.gmail.com>
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