The query was producing 3 columns - `(member, ref, network)`, whereas osm_id is a required field (otherwise it throws null constraint).
transportation_name
Docs
Read the layer documentation at http://openmaptiles.org/schema#transportation_name
The query was producing 3 columns - `(member, ref, network)`, whereas osm_id is a required field (otherwise it throws null constraint).
Read the layer documentation at http://openmaptiles.org/schema#transportation_name