Re: Way to use count() and LIMIT?

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От Joe Koenig
Тема Re: Way to use count() and LIMIT?
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Msg-id 3C20A7C7.8963C04B@jwebmedia.com
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Ответ на Re: Way to use count() and LIMIT?  ("SHELTON,MICHAEL (Non-HP-Boise,ex1)" <michael_shelton@non.hp.com>)
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That's so rediculously simple it hurts...I'm an idiot...Thank you VERY much.

Joe

Martijn van Oosterhout wrote:
>
> On Wed, Dec 19, 2001 at 08:13:50AM -0600, Joe Koenig wrote:
> > This is exactly right. The table I'm searching has 220,000 records right
> > now, and growing. The "Rock" category within "CD's" will return over
> > 53,000 results. The count isn't so much for display, as for knowing
> > whether or not to put a "next" button on the page. I don't want to
> > always have next buttons, but not always have more results. There is
> > currently the option to browse through results based on the first letter
> > of the result, which I guess I could make as the 3rd step and not run
> > the query that currently returns 53,000 results until they narrow it
> > down more. I wasn't really expecting this to be possible, but PG does so
> > many other things that I didn't think was possible, so I thought I'd ask :)
>
> But that's easy. Simply ask the database for one more record that you're
> going to display. If you get that extra record, then display the next
> button, otherwise don't. The count is irrelevent.
>
> --
> Martijn van Oosterhout <kleptog@svana.org>
> http://svana.org/kleptog/
> > Terrorists can only take my life. Only my government can take my freedom.

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