SQL Server 2008 Geography .STBuffer() distance measurement units

Posted by Chris on Stack Overflow See other posts from Stack Overflow or by Chris
Published on 2010-06-04T03:20:37Z Indexed on 2011/01/17 1:53 UTC
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sql

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distance

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geography

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measurement

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units-of-measurement

I'm working with a geographic point using lat/long and need to find other points in our database within a 5 mile radius of that point. However, I can't seem to find out what the "units" are for STBuffer, it doesn't seem to conform to feet, miles, meters, kilometers, etc. The documentation only refers to them as "units", any suggestions? Thanks

[...] from geography::STGeomFromText('POINT(x y)', 4326).STBuffer(z).STIntersects(geography::STGeomFromText('POINT(' + CAST(v.Longitude as varchar(max)) + ' ' + CAST(v.Latitude as varchar(max)) + ')', 4326)) = 1

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