From: | Vaibhav Kaushal <vaibhavkaushal123(at)gmail(dot)com> |
---|---|
To: | tomas(at)tuxteam(dot)de |
Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: How would sorting work with millions of rows in a huge DB with PG? |
Date: | 2011-04-10 17:08:48 |
Message-ID: | BANLkTikdk_sokoDd5GeCijaufX-wfXKDJg@mail.gmail.com |
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Lists: | pgsql-hackers |
Thanks a lot for the help.
Regards,
Vaibhav
On Sun, Apr 10, 2011 at 11:07 AM, <tomas(at)tuxteam(dot)de> wrote:
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> On Sun, Apr 10, 2011 at 05:20:02AM +0530, Vaibhav Kaushal wrote:
> > Hello all,
> >
> > I was going through some papers related to sorting and since I am
> > studying PG code side by side, I wondered how sorting would be done on a
> > DB with millions of rows on disk with GBs of data. Since holding
> > everything in memory would not be the possible solution, how do we
> > actually sort the results in such conditions.
>
> Look for "external sort" and "external merge"
>
> Regards
> - -- tomás
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