On Sat, Jul 19, 2008 at 6:42 PM, Sven Geggus <[EMAIL PROTECTED]> wrote: > Hello anybody, > > can someone explain to me why the osm_id column generated from osm2pgsql > is just almost but not completely unique?
Because a single feature in an OSM source file can translate into multiple "features" in the database. Parking areas which create nodes is the obvious one, but there are others like route-relations. > The reason I ask, is that tools like qgis need an unique column to work, > which I thought osm_id would be. Then I suppose you should make a unique column... > Can osm2pgsql be changed to make them unique? I think this would be a real > benefit, as no additional unique id column would be needed. I don't see how, but perhaps you have an idea? Have a nice day, -- Martijn van Oosterhout <[EMAIL PROTECTED]> http://svana.org/kleptog/ _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
