6457419e0d
I would like to reformat all of our SQL to have a concise coding style. This makes it far easier to understand the code for a casual contributor, and lets us spot errors more easily. Most importantly, it makes it much easier to grep (search) the code because it is more likely to be in the same syntax Some key changes: * SQL keywords are always UPPERCASE, e.g. `SELECT WHEN AS END ...` * types, variables, aliases, and field names (identifiers) are always lower case * `LANGUAGE 'plpgsql'` is now `LANGUAGE plpgsql` (no quotes) * a few minor spacing/semicolon cleanups P.S. Per @TomPohys request, `TABLE` is spelled using upper case despite being a type for consistency with PG Docs. Same for `LANGUAGE SQL` vs `LANGUAGE plpgsql`.
118 lines
5.5 KiB
PL/PgSQL
118 lines
5.5 KiB
PL/PgSQL
-- etldoc: layer_building[shape=record fillcolor=lightpink, style="rounded,filled",
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-- etldoc: label="layer_building | <z13> z13 | <z14_> z14+ " ] ;
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CREATE INDEX IF NOT EXISTS osm_building_relation_building_idx ON osm_building_relation (building) WHERE building = '' AND ST_GeometryType(geometry) = 'ST_Polygon';
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CREATE INDEX IF NOT EXISTS osm_building_relation_member_idx ON osm_building_relation (member) WHERE role = 'outline';
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CREATE OR REPLACE VIEW osm_all_buildings AS
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(
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SELECT
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-- etldoc: osm_building_relation -> layer_building:z14_
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-- Buildings built from relations
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member AS osm_id,
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geometry,
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COALESCE(CleanNumeric(height), CleanNumeric(buildingheight)) AS height,
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COALESCE(CleanNumeric(min_height), CleanNumeric(buildingmin_height)) AS min_height,
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COALESCE(CleanNumeric(levels), CleanNumeric(buildinglevels)) AS levels,
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COALESCE(CleanNumeric(min_level), CleanNumeric(buildingmin_level)) AS min_level,
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nullif(material, '') AS material,
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nullif(colour, '') AS colour,
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FALSE AS hide_3d
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FROM osm_building_relation
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WHERE building = ''
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AND ST_GeometryType(geometry) = 'ST_Polygon'
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UNION ALL
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SELECT
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-- etldoc: osm_building_polygon -> layer_building:z14_
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-- Standalone buildings
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obp.osm_id,
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obp.geometry,
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COALESCE(CleanNumeric(obp.height), CleanNumeric(obp.buildingheight)) AS height,
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COALESCE(CleanNumeric(obp.min_height), CleanNumeric(obp.buildingmin_height)) AS min_height,
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COALESCE(CleanNumeric(obp.levels), CleanNumeric(obp.buildinglevels)) AS levels,
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COALESCE(CleanNumeric(obp.min_level), CleanNumeric(obp.buildingmin_level)) AS min_level,
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nullif(obp.material, '') AS material,
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nullif(obp.colour, '') AS colour,
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obr.role IS NOT NULL AS hide_3d
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FROM osm_building_polygon obp
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LEFT JOIN osm_building_relation obr ON
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obp.osm_id >= 0 AND
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obr.member = obp.osm_id AND
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obr.role = 'outline'
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WHERE ST_GeometryType(obp.geometry) IN ('ST_Polygon', 'ST_MultiPolygon')
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);
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CREATE OR REPLACE FUNCTION layer_building(bbox geometry, zoom_level int)
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RETURNS TABLE
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(
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geometry geometry,
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osm_id bigint,
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render_height int,
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render_min_height int,
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colour text,
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hide_3d boolean
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)
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AS
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$$
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SELECT geometry,
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osm_id,
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render_height,
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render_min_height,
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COALESCE(colour, CASE material
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-- Ordered by count from taginfo
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WHEN 'cement_block' THEN '#6a7880'
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WHEN 'brick' THEN '#bd8161'
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WHEN 'plaster' THEN '#dadbdb'
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WHEN 'wood' THEN '#d48741'
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WHEN 'concrete' THEN '#d3c2b0'
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WHEN 'metal' THEN '#b7b1a6'
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WHEN 'stone' THEN '#b4a995'
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WHEN 'mud' THEN '#9d8b75'
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WHEN 'steel' THEN '#b7b1a6' -- same as metal
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WHEN 'glass' THEN '#5a81a0'
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WHEN 'traditional' THEN '#bd8161' -- same as brick
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WHEN 'masonry' THEN '#bd8161' -- same as brick
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WHEN 'Brick' THEN '#bd8161' -- same as brick
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WHEN 'tin' THEN '#b7b1a6' -- same as metal
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WHEN 'timber_framing' THEN '#b3b0a9'
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WHEN 'sandstone' THEN '#b4a995' -- same as stone
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WHEN 'clay' THEN '#9d8b75' -- same as mud
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END) AS colour,
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CASE WHEN hide_3d THEN TRUE END AS hide_3d
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FROM (
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SELECT
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-- etldoc: osm_building_polygon_gen1 -> layer_building:z13
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osm_id,
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geometry,
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NULL::int AS render_height,
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NULL::int AS render_min_height,
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NULL::text AS material,
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NULL::text AS colour,
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FALSE AS hide_3d
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FROM osm_building_polygon_gen1
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WHERE zoom_level = 13
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AND geometry && bbox
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UNION ALL
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SELECT
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-- etldoc: osm_building_polygon -> layer_building:z14_
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DISTINCT ON (osm_id) osm_id,
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geometry,
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ceil(COALESCE(height, levels * 3.66, 5))::int AS render_height,
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floor(COALESCE(min_height, min_level * 3.66, 0))::int AS render_min_height,
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material,
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colour,
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hide_3d
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FROM osm_all_buildings
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WHERE (levels IS NULL OR levels < 1000)
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AND (min_level IS NULL OR min_level < 1000)
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AND (height IS NULL OR height < 3000)
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AND (min_height IS NULL OR min_height < 3000)
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AND zoom_level >= 14
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AND geometry && bbox
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) AS zoom_levels
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ORDER BY render_height ASC, ST_YMin(geometry) DESC;
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$$ LANGUAGE SQL IMMUTABLE;
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-- not handled: where a building outline covers building parts
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