Re: Where to find information on the new HOT tables? - Mailing list pgsql-admin

From Joshua D. Drake
Subject Re: Where to find information on the new HOT tables?
Date
Msg-id 20080205122158.253e4a71@jd-laptop
Whole thread Raw
In response to Re: Where to find information on the new HOT tables?  ("Chris Hoover" <revoohc@gmail.com>)
List pgsql-admin
On Tue, 5 Feb 2008 15:11:49 -0500
"Chris Hoover" <revoohc@gmail.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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