| From: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
|---|---|
| To: | "Chris Hoover" <revoohc(at)gmail(dot)com> |
| Cc: | "Bruce Momjian" <bruce(at)momjian(dot)us>, "pgsql-admin(at)postgresql(dot)org Admin" <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: Where to find information on the new HOT tables? |
| Date: | 2008-02-05 20:21:58 |
| Message-ID: | 20080205122158.253e4a71@jd-laptop |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-admin |
On Tue, 5 Feb 2008 15:11:49 -0500
"Chris Hoover" <revoohc(at)gmail(dot)com> wrote:
> > Ok that's awesome. However, is there any documentation out there
> explaining this feature in detail, and how it works, what to expect,
> etc. ?
As I understand it, the key to hot is that it is only useful if you are
updating non-indexed columns. This is great when dealing with things
like session tables where you are doing this:
UPDATE sessions SET last_active = current_date WHERE sid = <session_id>.
last_active may not indexed.
Sincerely,
Joshua D. Drake
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