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<Pasted Graphic 2.tiff>
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:Met vriendelijke groeten,
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
Bien à vous,
Kind regards,
Yves Vindevogel
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Met vriendelijke groeten,
Bien à vous,
Kind regards,
Yves Vindevogel
Implements
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Mail: [EMAIL PROTECTED] - Mobile: +32 (478) 80 82 91
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Bien à vous,
Kind regards,
Yves Vindevogel
Implements
Mail: [EMAIL PROTECTED] - Mobile: +32 (478) 80 82 91
Kempische Steenweg 206 - 3500 Hasselt - Tel-Fax: +32 (11) 43 55 76
Web: http://www.implements.be
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First they ignore you. Then they laugh at you. Then they fight you. Then you win.
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