layer:
  id: "building"
  description: |
    All [OSM Buildings](http://wiki.openstreetmap.org/wiki/Buildings).
  buffer_size: 4
  datasource:
    query: (SELECT * FROM layer_building(!bbox!, z(!scale_denominator!))) AS t
  fields:
    render_height: |
        An approximated height from levels and height of building after the method of Paul Norman in [OSM Clear](https://github.com/ClearTables/osm-clear)
schema:
  - ./building.sql
datasources:
  - type: imposm3
    mapping_file: ./mapping.yaml