Re: how to make this database / query faster

From: mark <markkicks(at)gmail(dot)com>
To: "Richard Broersma" <richard(dot)broersma(at)gmail(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: how to make this database / query faster
Date: 2008-03-15 23:41:56
Message-ID: 82fa9e310803151641v64903e11o8c724368ee5bf831@mail.gmail.com
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On Sat, Mar 15, 2008 at 4:37 PM, Richard Broersma <
richard(dot)broersma(at)gmail(dot)com> wrote:

> On Sat, Mar 15, 2008 at 4:21 PM, mark <markkicks(at)gmail(dot)com> wrote:
>
>
> > select * from users where session_key is not Null order by id offset
> > OFFSET limit 300
> >
> > One solution is to retain the last ID from the previous scan:
>
> SELECT *
> FROM Users
> WHERE session_key IS NOT NULL
> AND id > your_last_id
> LIMIT 300;
>

will this ensure that no row is repeated when i itereate over the table?
what are the rows ordered by?
thanks

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