Re: Help optimizing a slow index scan

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On 3/17/06, Bruno Wolff III <bruno@xxxxxxxx> wrote:
> Have you looked at using the Earth Distance contrib module? If a spherical
> model of the earth is suitable for your application, then it may work for you
> and might be easier than trying to create Gist indexes yourself.

earth distance = great stuff.  If the maximum error is known then you
can just pad the distance and filter the result on the client if exact
precision is needed.

Merlin


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