Osm2pgsql Importing fewer fields

Explanation:osm2pgsql imports normally the data in a static database schema. The tags without a corresponding column is ignored. By adding the option -k or --hstore , Osm2pgsql would add a new Hstore column to each tags table and save there all tags WI Thout column.

Another:

The Default.style file Https://github.com/openstreetmap/osm2pgsql/blob/master/default.style does not pick all fields Into it own column,so edit Default.style what you want.

Reference: Http://stackoverflow.com/questions/31264674/osm2pgsql-data-converting-lost-columns

Http://gis.stackexchange.com/questions/135715/osm2pgsql-cant-find-maxspeed-tag-after-import

Osm2pgsql Importing fewer fields