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Ensure nameless POI have biggest rank

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This commit is contained in:
Lukas Martinelli 2016-11-30 13:43:28 +00:00
parent 071201fe52
commit eb847606bb
1 changed files with 4 additions and 3 deletions
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7
layers/poi/layer.sql
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@ -4,11 +4,12 @@
CREATE OR REPLACE FUNCTION layer_poi(bbox geometry, zoom_level integer, pixel_width numeric)
RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text, class text, subclass text, "rank" int) AS $$
SELECT osm_id, geometry, name, NULLIF(name_en, ''), poi_class(subclass) AS class, subclass,
SELECT osm_id, geometry, NULLIF(name, ''), NULLIF(name_en, ''), poi_class(subclass) AS class, subclass,
row_number() OVER (
PARTITION BY LabelGrid(geometry, 100 * pixel_width)
ORDER BY poi_class_rank(poi_class(subclass)) ASC,
length(name) DESC NULLS LAST
ORDER BY
CASE WHEN name = '' THEN 1 ELSE 0 END ASC,
poi_class_rank(poi_class(subclass)) ASC
)::int AS "rank"
FROM (
-- etldoc: osm_poi_point -> layer_poi:z14