I want to get the polygons of several administrative land areas. For example https://wiki.openstreetmap.org/wiki/DE:Grenze#Innerstaatliche_Grenzen contains the relation numbers for the land areas of Germany and of five german states that differ from boundary=administrative and are tagged as land_area=administrative. I get entries in osm_polygon for that six boundary relations 51477, 62718, 62782, 28322, 62771 and 51529, but entries for the land_area relations 62781, 2833343, 451087, 62774, 454192 and 62775 are missing.
For osm2pgsql I copied empty.style as fds.style and added a line
way land_area text polygon,nocolumn
(but I notice empty.style has no entry for "boundary" keys).
Data is for Germany and some surrounding areas, downloaded from geofabrik.de and merged with osmosis.
This is the command line I tried for osm2pgsql:
C:\Daten2\osm2pgsql-bin\osm2pgsql.exe --host ubuntu.forplan.local --username postgres --password --slim --cache 30000 --proj 32632 --hstore --hstore-add-index --keep-coastlines --multi-geometry --prefix osm --style C:\Daten2\osm2pgsql-bin\fds.style C:\Daten2\osm-2019-11-06.pbf