Re: filtering after join

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От andrew
Тема Re: filtering after join
Дата
Msg-id 29d3b0b90601270110w645eab52k41ea6e385f297ae4@mail.gmail.com
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Ответ на Re: filtering after join  (Peter Eisentraut <peter_e@gmx.net>)
Ответы Re: filtering after join  (andrew <andrew.ylzhou@gmail.com>)
Список pgsql-sql
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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