On Sat, Mar 15, 2008 at 4:21 PM, mark <[EMAIL PROTECTED]> wrote:

> select * from users where session_key is not Null order by id offset
> OFFSET limit 300
>
> OFFSET actually scans past all of the records that specify in the
"OFFSET".  So the bigger your offset the longer the scan will be.

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;

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