kopia lustrzana https://github.com/openmaptiles/openmaptiles
31 wiersze
1.3 KiB
SQL
31 wiersze
1.3 KiB
SQL
ALTER TABLE osm_state_point DROP CONSTRAINT IF EXISTS osm_state_point_rank_constraint;
|
|
|
|
-- etldoc: ne_10m_admin_1_states_provinces_shp -> osm_state_point
|
|
-- etldoc: osm_state_point -> osm_state_point
|
|
|
|
WITH important_state_point AS (
|
|
SELECT osm.geometry, osm.osm_id, osm.name, COALESCE(NULLIF(osm.name_en, ''), ne.name) AS name_en, ne.scalerank, ne.labelrank, ne.datarank
|
|
FROM ne_10m_admin_1_states_provinces_shp AS ne, osm_state_point AS osm
|
|
WHERE
|
|
-- We only match whether the point is within the Natural Earth polygon
|
|
-- because name matching is difficult
|
|
ST_Within(osm.geometry, ne.geom)
|
|
-- We leave out leess important states
|
|
AND ne.scalerank <= 3 AND ne.labelrank <= 2
|
|
)
|
|
UPDATE osm_state_point AS osm
|
|
-- Normalize both scalerank and labelrank into a ranking system from 1 to 6.
|
|
SET "rank" = LEAST(6, CEILING((scalerank + labelrank + datarank)/3.0))
|
|
FROM important_state_point AS ne
|
|
WHERE osm.osm_id = ne.osm_id;
|
|
|
|
-- TODO: This shouldn't be necessary? The rank function makes something wrong...
|
|
UPDATE osm_state_point AS osm
|
|
SET "rank" = 1
|
|
WHERE "rank" = 0;
|
|
|
|
DELETE FROM osm_state_point WHERE "rank" IS NULL;
|
|
|
|
ALTER TABLE osm_state_point ADD CONSTRAINT osm_state_point_rank_constraint CHECK("rank" BETWEEN 1 AND 6);
|
|
CREATE INDEX IF NOT EXISTS osm_state_point_rank_idx ON osm_state_point("rank");
|