Hi Folks, i started a planet import with the additional hstore column. It allows us to retrive and search in all tags used in osm. I used a combined hstore/column scheme, as our tests on the german devserver showed that hstore-value-conditions are much slower than the column-conditions of the classic database layout. If the import is over, i'll come back with some sample queries. The import is running on ptolemy using the following command: $HOME/src/osm2pgsql/osm2pgsql \ --slim \ --cache 3000 \ --merc \ --prefix planet \ --style $HOME/src/osm2pgsql/default.style \ --host sql-mapnik \ --database osm_mapnik \ --hstore \ --extra-attributes \ $HOME/data/planet-100505.osm.bz2 2>&1 | \ tee $HOME/planet_osm_hstore_import.log I'm planning to switch the ddiff update process to this database after the import and to drop the old, classic database. Peter