387 lines
14 KiB
MySQL
387 lines
14 KiB
MySQL
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-- etldoc: layer_park[shape=record fillcolor=lightpink, style="rounded,filled",
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-- etldoc: label="layer_park |<z4> z4 |<z5> z5 |<z6> z6 |<z7> z7 |<z8> z8 |<z9> z9 |<z10> z10 |<z11> z11 |<z12> z12|<z13> z13|<z14> z14+" ] ;
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CREATE OR REPLACE FUNCTION layer_park(bbox geometry, zoom_level int, pixel_width numeric)
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RETURNS TABLE
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(
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osm_id bigint,
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geometry geometry,
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class text,
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name text,
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name_en text,
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name_de text,
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tags hstore,
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rank int
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)
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AS
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$$
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SELECT osm_id,
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geometry,
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class,
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NULLIF(name, '') AS name,
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NULLIF(name_en, '') AS name_en,
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NULLIF(name_de, '') AS name_de,
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tags,
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rank
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FROM (
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SELECT osm_id,
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geometry,
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COALESCE(
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LOWER(REPLACE(NULLIF(protection_title, ''), ' ', '_')),
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NULLIF(boundary, ''),
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NULLIF(leisure, ''))
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AS class,
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name,
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name_en,
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name_de,
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tags,
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NULL::int AS rank
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FROM (
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-- etldoc: osm_park_polygon_dissolve_z4 -> layer_park:z4
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SELECT NULL::int AS osm_id,
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geometry,
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NULL AS name,
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NULL AS name_en,
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NULL AS name_de,
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NULL AS tags,
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NULL AS leisure,
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NULL AS boundary,
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NULL AS protection_title
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FROM osm_park_polygon_dissolve_z4
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WHERE zoom_level = 4
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AND geometry && bbox
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z5 -> layer_park:z5
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SELECT osm_id,
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geometry,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title
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FROM osm_park_polygon_gen_z5
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WHERE zoom_level = 5
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AND geometry && bbox
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z6 -> layer_park:z6
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SELECT osm_id,
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geometry,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title
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FROM osm_park_polygon_gen_z6
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WHERE zoom_level = 6
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AND geometry && bbox
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z7 -> layer_park:z7
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SELECT osm_id,
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geometry,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title
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FROM osm_park_polygon_gen_z7
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WHERE zoom_level = 7
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AND geometry && bbox
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z8 -> layer_park:z8
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SELECT osm_id,
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geometry,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title
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FROM osm_park_polygon_gen_z8
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WHERE zoom_level = 8
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AND geometry && bbox
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z9 -> layer_park:z9
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SELECT osm_id,
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geometry,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title
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FROM osm_park_polygon_gen_z9
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WHERE zoom_level = 9
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AND geometry && bbox
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z10 -> layer_park:z10
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SELECT osm_id,
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geometry,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title
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FROM osm_park_polygon_gen_z10
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WHERE zoom_level = 10
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AND geometry && bbox
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z11 -> layer_park:z11
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SELECT osm_id,
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geometry,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title
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FROM osm_park_polygon_gen_z11
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WHERE zoom_level = 11
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AND geometry && bbox
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z12 -> layer_park:z12
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SELECT osm_id,
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geometry,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title
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FROM osm_park_polygon_gen_z12
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WHERE zoom_level = 12
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AND geometry && bbox
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z13 -> layer_park:z13
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SELECT osm_id,
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geometry,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title
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FROM osm_park_polygon_gen_z13
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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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-- etldoc: osm_park_polygon -> layer_park:z14
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SELECT osm_id,
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geometry,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title
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FROM osm_park_polygon
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WHERE zoom_level >= 14
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AND geometry && bbox
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) AS park_polygon
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UNION ALL
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SELECT osm_id,
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geometry_point AS geometry,
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COALESCE(
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LOWER(REPLACE(NULLIF(protection_title, ''), ' ', '_')),
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NULLIF(boundary, ''),
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NULLIF(leisure, '')
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) AS class,
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name,
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name_en,
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name_de,
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tags,
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row_number() OVER (
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PARTITION BY LabelGrid(geometry_point, 100 * pixel_width)
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ORDER BY
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(CASE WHEN boundary = 'national_park' THEN TRUE ELSE FALSE END) DESC,
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(COALESCE(NULLIF(tags->'wikipedia', ''), NULLIF(tags->'wikidata', '')) IS NOT NULL) DESC,
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area DESC
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)::int AS "rank"
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FROM (
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-- etldoc: osm_park_polygon_gen_z5 -> layer_park:z5
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SELECT osm_id,
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geometry_point,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title,
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area
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FROM osm_park_polygon_gen_z5
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WHERE zoom_level = 5
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AND geometry_point && bbox
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AND area > 70000*2^(20-zoom_level)
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z6 -> layer_park:z6
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SELECT osm_id,
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geometry_point,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title,
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area
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FROM osm_park_polygon_gen_z6
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WHERE zoom_level = 6
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AND geometry_point && bbox
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AND area > 70000*2^(20-zoom_level)
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z7 -> layer_park:z7
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SELECT osm_id,
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geometry_point,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title,
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area
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FROM osm_park_polygon_gen_z7
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WHERE zoom_level = 7
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AND geometry_point && bbox
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AND area > 70000*2^(20-zoom_level)
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z8 -> layer_park:z8
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SELECT osm_id,
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geometry_point,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title,
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area
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FROM osm_park_polygon_gen_z8
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WHERE zoom_level = 8
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AND geometry_point && bbox
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AND area > 70000*2^(20-zoom_level)
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z9 -> layer_park:z9
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SELECT osm_id,
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geometry_point,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title,
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area
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FROM osm_park_polygon_gen_z9
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WHERE zoom_level = 9
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AND geometry_point && bbox
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AND area > 70000*2^(20-zoom_level)
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z10 -> layer_park:z10
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SELECT osm_id,
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geometry_point,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title,
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area
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FROM osm_park_polygon_gen_z10
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WHERE zoom_level = 10
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AND geometry_point && bbox
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AND area > 70000*2^(20-zoom_level)
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z11 -> layer_park:z11
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SELECT osm_id,
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geometry_point,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title,
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area
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FROM osm_park_polygon_gen_z11
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WHERE zoom_level = 11
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AND geometry_point && bbox
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AND area > 70000*2^(20-zoom_level)
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z12 -> layer_park:z12
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SELECT osm_id,
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geometry_point,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title,
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area
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FROM osm_park_polygon_gen_z12
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WHERE zoom_level = 12
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AND geometry_point && bbox
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AND area > 70000*2^(20-zoom_level)
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UNION ALL
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-- etldoc: osm_park_polygon_gen_z13 -> layer_park:z13
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SELECT osm_id,
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geometry_point,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title,
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area
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FROM osm_park_polygon_gen_z13
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WHERE zoom_level = 13
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AND geometry_point && bbox
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AND area > 70000*2^(20-zoom_level)
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UNION ALL
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-- etldoc: osm_park_polygon -> layer_park:z14
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SELECT osm_id,
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geometry_point,
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name,
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name_en,
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name_de,
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tags,
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leisure,
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boundary,
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protection_title,
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area
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FROM osm_park_polygon
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WHERE zoom_level >= 14
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AND geometry_point && bbox
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) AS park_point
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) AS park_all;
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$$ LANGUAGE SQL STABLE
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PARALLEL SAFE;
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-- TODO: Check if the above can be made STRICT -- i.e. if pixel_width could be NULL
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