postgresql - How to make osm2pgsql import a tag?

I loaded OSM data into PostgeSQL with Osmosis&Osm2PgSQL, and see many tags are missing. I need to make it import lanes tag. How can I make it save this tag too?

edit: my solution was to copy /usr/share/osm2pgsql/default.style into a new file, edit it adding a line:

way   lanes         int4         linear

then call osm2pgsql with parameter:

osm2pgsql ... --style my.style

Answer

With osm2pgsql, you have to edit the default.style file.

it is a simple text file, so any text editor will do.

For including lanes, add a line

node,way   lane     text         linear

you have to re-import your data afterwards.

If you have installed the hstore, you could extract the tags from there, but that's a bit more difficult.