33 lines
1.3 KiB
PL/PgSQL
33 lines
1.3 KiB
PL/PgSQL
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-- etldoc: layer_place[shape=record fillcolor=lightpink, style="rounded,filled",
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-- etldoc: label="layer_place | <zall> z0-z14_ " ] ;
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-- etldoc: layer_continent -> layer_place
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-- etldoc: layer_country -> layer_place
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-- etldoc: layer_state -> layer_place
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-- etldoc: layer_city -> layer_place
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CREATE OR REPLACE FUNCTION layer_place(bbox geometry, zoom_level int, pixel_width numeric)
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RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text, class text, subclass text, "rank" int, capital INT) AS $$
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SELECT
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osm_id, geometry, name, name_en,
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'continent' AS class, 'continent' AS subclass, 1 AS "rank", NULL::int AS capital
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FROM osm_continent_point
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WHERE geometry && bbox AND zoom_level < 4
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UNION ALL
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SELECT
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osm_id, geometry, name, name_en,
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'country' AS class, 'country' AS subclass,"rank", NULL::int AS capital
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FROM layer_country(bbox, zoom_level)
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UNION ALL
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SELECT
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osm_id, geometry, name, name_en,
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'state' AS class, 'state' AS subclass, "rank", NULL::int AS capital
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FROM layer_state(bbox, zoom_level)
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UNION ALL
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SELECT
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osm_id, geometry, name, name_en,
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place_class(place::text) AS class, place::text AS subclass, "rank", capital
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FROM layer_city(bbox, zoom_level, pixel_width)
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$$ LANGUAGE SQL IMMUTABLE;
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