[GRASS-user] Trouble with v.db.join and sqlite

doktoreas thedoktor78 at gmail.com
Fri May 30 07:17:51 EDT 2008

Markus Neteler OSGeo wrote:
> Luca,
> can you replicate this with Spearfish or the NC data set?
> Then we could easier test things...
> Markus

Hi Markus,

those are the steps to replicate the problem with NC dataset ( all is done
in a new mapset called sqlite):

db.connect driver=sqlite
g.copy vect=urbanarea at PERMANENT,urbanarea
v.extract -t input=urbanarea output=urban_point type=point,centroid
v.db.addtable urban_point

v.db.join map=urbanarea column=cat otable=urban_point ocolumn=cat
DBMI-SQLite driver error:
Error in sqlite3_prepare():
duplicate column name: cat

ERROR: Error while executing: 'ALTER TABLE urban_point ADD COLUMN cat
ERROR: Cannot continue (problem adding column).
ERROR: Cannot continue.

Thanks for your help


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