I just ran this query

select p.* from tblPrintjobs p , (select oid from tblPrintjobs limit 25 offset 622825) as subset where p.oid = subset.oid

And it seems to be a bit faster than without the subselect, probably because I'm only getting one column.
The speed gain is not that high though

On 24 Jun 2005, at 22:19, Yves Vindevogel wrote:

Hmm, I can't do this, i'm afraid. Or it would be rather difficult

My query is executed through a webpage (link to the page in a navigation bar)
I do not know how many records there are (data is changing, and currently is 600k records)

The only thing I could do, is doing this in a function where I first get the page, and then decide whether to use the normal sort order or the reversed order
That would put my weak point right in the middle, which is not that bad, but I would like to find an easier way, if that is possible

Huge memory would help ?

On 24 Jun 2005, at 20:54, hubert depesz lubaczewski wrote:

On 6/24/05, Yves Vindevogel <[EMAIL PROTECTED]> wrote:
So, when I want the last page, which is: 600k / 25 = page 24000 - 1 =
23999, I issue the offset of 23999 * 25

improving this is hard, but not impossible.
if you have right index created, try to reverse the order and fetch
first adverts, and then resort it (just the 25 adverts) in correct
order.
it will be faster.

depesz


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