113 lines
4.0 KiB
PL/PgSQL
113 lines
4.0 KiB
PL/PgSQL
CREATE OR REPLACE VIEW place_z2 AS (
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SELECT osm_id, geometry, name, name_en, place, scalerank, population
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FROM osm_important_place_point
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WHERE scalerank <= 0
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);
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CREATE OR REPLACE VIEW place_z3 AS (
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SELECT osm_id, geometry, name, name_en, place, scalerank, population
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FROM osm_important_place_point
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WHERE scalerank <= 2
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);
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CREATE OR REPLACE VIEW place_z4 AS (
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SELECT osm_id, geometry, name, name_en, place, scalerank, population
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FROM osm_important_place_point
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WHERE scalerank <= 5
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);
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CREATE OR REPLACE VIEW place_z5 AS (
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SELECT osm_id, geometry, name, name_en, place, scalerank, population
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FROM osm_important_place_point
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WHERE scalerank <= 6
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);
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CREATE OR REPLACE VIEW place_z6 AS (
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SELECT osm_id, geometry, name, name_en, place, scalerank, population
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FROM osm_important_place_point
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WHERE scalerank <= 7
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);
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CREATE OR REPLACE VIEW place_z7 AS (
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SELECT osm_id, geometry, name, name_en, place, scalerank, population
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FROM osm_important_place_point
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);
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CREATE OR REPLACE VIEW place_z8 AS (
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SELECT osm_id, geometry, name, name_en, place, NULL::integer AS scalerank, population FROM osm_place_point
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WHERE place IN ('city', 'town')
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);
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CREATE OR REPLACE VIEW place_z10 AS (
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SELECT osm_id, geometry, name, name_en, place, NULL::integer AS scalerank, population FROM osm_place_point
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WHERE place IN ('city', 'town', 'village') OR place='subregion'
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);
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CREATE OR REPLACE VIEW place_z11 AS (
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SELECT osm_id, geometry, name, name_en, place, NULL::integer AS scalerank, population FROM osm_place_point
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WHERE place IN ('city', 'town', 'village', 'suburb')
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);
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CREATE OR REPLACE VIEW place_z13 AS (
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SELECT osm_id, geometry, name, name_en, place, NULL::integer AS scalerank, population FROM osm_place_point
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WHERE place IN ('city', 'town', 'village', 'suburb')
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);
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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, place text, abbrev text, postal text, scalerank int) AS $$
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SELECT osm_id, geometry, name, name AS name_en, 'country' AS place, abbrev, postal, scalerank FROM layer_country(bbox, zoom_level)
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UNION ALL
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SELECT osm_id, geometry, name, name_en, 'state' AS place, abbrev, postal, scalerank FROM layer_state(bbox, zoom_level)
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UNION ALL
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SELECT osm_id, geometry, name, name_en, place, NULL AS abbrev, NULL AS postal, scalerank FROM (
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SELECT osm_id, geometry, name, name_en, place, scalerank,
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row_number() OVER (
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PARTITION BY LabelGrid(geometry, 150 * pixel_width)
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ORDER BY scalerank ASC NULLS LAST,
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population DESC NULLS LAST,
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length(name) DESC
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) AS gridrank
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FROM (
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--Cities
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SELECT * FROM place_z2
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WHERE zoom_level = 2
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UNION ALL
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SELECT * FROM place_z3
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WHERE zoom_level = 3
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UNION ALL
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SELECT * FROM place_z4
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WHERE zoom_level = 4
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UNION ALL
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SELECT * FROM place_z5
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WHERE zoom_level = 5
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UNION ALL
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SELECT * FROM place_z6
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WHERE zoom_level = 6
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UNION ALL
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SELECT * FROM place_z7
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WHERE zoom_level = 7
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UNION ALL
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SELECT * FROM place_z8
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WHERE zoom_level BETWEEN 8 AND 9
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UNION ALL
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SELECT * FROM place_z10
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WHERE zoom_level = 10
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UNION ALL
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SELECT * FROM place_z11
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WHERE zoom_level BETWEEN 11 AND 12
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UNION ALL
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SELECT * FROM place_z13
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WHERE zoom_level >= 13
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) AS zoom_levels
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WHERE geometry && bbox
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) AS ranked_places
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WHERE
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zoom_level <= 7 OR
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(zoom_level = 8 AND gridrank <= 4) OR
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(zoom_level = 9 AND gridrank <= 9) OR
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(zoom_level = 10 AND gridrank <= 9) OR
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(zoom_level = 11 AND gridrank <= 9) OR
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(zoom_level = 12 AND gridrank <= 9) OR
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zoom_level >= 13;
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$$ LANGUAGE SQL IMMUTABLE;
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