Storing and accessing GeoData( Latitude and Longitude ) in PostgreSQL 8.3

From: "Stefan Sturm" <stefan(dot)s(dot)sturm(at)googlemail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Storing and accessing GeoData( Latitude and Longitude ) in PostgreSQL 8.3
Date: 2008-04-16 09:23:42
Message-ID: 6316bee0804160223i12e1f64bobf00bb2ab35a6749@mail.gmail.com
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Hello,

I have a lot of GeoData( Latitude and Longitude ) in my PostgreSQL Database.
Is store them as numeric at this time.
But now I want to access the data and want to have all Datasets around a
Geographic point. eg:
"within<http://dict.leo.org/ende?lp=ende&p=thMx..&search=within>
a <http://dict.leo.org/ende?lp=ende&p=thMx..&search=a>
radius<http://dict.leo.org/ende?lp=ende&p=thMx..&search=radius>
of <http://dict.leo.org/ende?lp=ende&p=thMx..&search=of>
5<http://dict.leo.org/ende?lp=ende&p=thMx..&search=5>
km"... <http://dict.leo.org/ende?lp=ende&p=thMx..&search=km>

Is there a simple way to do something like this?

Thanks for your Help,
Stefan Sturm

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