On Thu, Aug 16, 2007 at 12:12:03PM +0200, Rainer Bauer wrote: > "Scott Marlowe" wrote: > > >When I go to amazon.com I only ever get three pages of results. ever. > > Because they know that returning 190 pages is not that useful, as > >hardly anyone is going to wander through that many pages. > > > >Google, you'll notice says "Results 1 - 10 of about 5,610,000 for > >blacksmith" i.e. it's guesstimating as well. no reason for google to > >look at every single row for blacksmith to know that there's about 5.6 > >million. > > But if you go to eBay, they always give you an accurate count. Even if the no. > of items found is pretty large (example: <http://search.ebay.com/new>). And I'd bet money that they're using a full text search of some kind to get those results, which isn't remotely close to the same thing as a generic SELECT count(*). -- Decibel!, aka Jim Nasby decibel@xxxxxxxxxxx EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)
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