Re: Auto Partitioning

From: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
To: Simon Riggs <simon(at)2ndquadrant(dot)com>
Cc: Markus Schiltknecht <markus(at)bluegap(dot)ch>, Gregory Stark <stark(at)enterprisedb(dot)com>, NikhilS <nikkhils(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Auto Partitioning
Date: 2007-04-04 19:10:01
Message-ID: 4613F809.2010607@commandprompt.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers pgsql-patches

Simon Riggs wrote:
> On Wed, 2007-04-04 at 20:55 +0200, Markus Schiltknecht wrote:
>
>> Questioning the other way around: do we need any sort of multi-table
>> indexes at all, or isn't it enough to teach the planner and executor how
>> to intelligently scan through (possibly) multiple indexes to get what is
>> requested?
>
> No, I don't think we need multi-table indexes at all.

If we don't have multi-table indexes how do we enforce a primary key
against a partitioned set? What about non primary keys that are just
UNIQUE? What about check constraints that aren't apart of the exclusion?

Joshua D. Drake

>
> The planner already uses the Append node to put together multiple plans.
> The great thing is it will put together IndexScans and SeqScans as
> applicable. No need for multi-scans as a special node type.
>

--

=== The PostgreSQL Company: Command Prompt, Inc. ===
Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240
Providing the most comprehensive PostgreSQL solutions since 1997
http://www.commandprompt.com/

Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate
PostgreSQL Replication: http://www.commandprompt.com/products/

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Andrew Dunstan 2007-04-04 19:10:21 build/install xml2 when configured with libxml
Previous Message Tom Lane 2007-04-04 19:01:59 Re: IDENTITY/GENERATED v36 Re: Final version of IDENTITY/GENERATED patch

Browse pgsql-patches by date

  From Date Subject
Next Message Andrew Dunstan 2007-04-04 19:10:21 build/install xml2 when configured with libxml
Previous Message Tom Lane 2007-04-04 19:01:59 Re: IDENTITY/GENERATED v36 Re: Final version of IDENTITY/GENERATED patch