openmaptiles/layers/housenumber/layer.sql

CREATE OR REPLACE FUNCTION layer_housenumber(bbox geometry, zoom_level integer)
RETURNS TABLE(osm_id bigint, geometry geometry, housenumber text) AS $$
    SELECT osm_id, geometry, housenumber FROM osm_housenumber_point
    WHERE zoom_level >= 14 AND geometry && bbox;
$$ LANGUAGE SQL IMMUTABLE;