[OSM-dev] osm2pgsql: why is osm_id not unique?

[Sven Geggus]

Hello anybody,

can someone explain to me why the osm_id column generated from osm2pgsql
is just almost but not completely unique?

The reason I ask, is that tools like qgis need an unique column to work,
which I thought osm_id would be.

There are very few of them (e.g. 9 lines out of 173733 in my
planet_osm_line).

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.

Regards

Sven

-- 
"Thinking of using NT for your critical apps?
                                  Isn't there enough suffering in the world?"
                   (Advertisement of Sun Microsystems in Wall Street Journal)
/me is giggls at ircnet, http://sven.gegg.us/ on the Web