24 lines
1.1 KiB
PL/PgSQL
24 lines
1.1 KiB
PL/PgSQL
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-- etldoc: layer_water_name[shape=record fillcolor=lightpink, style="rounded,filled",
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-- etldoc: label="layer_water_name | <z9_13> z9_13 | <z14_> z14+" ] ;
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CREATE OR REPLACE FUNCTION layer_water_name(bbox geometry, zoom_level integer)
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RETURNS TABLE(osm_id bigint, geometry geometry, name text, name_en text, class text) AS $$
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-- etldoc: osm_water_lakeline -> layer_water_name:z9_13
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-- etldoc: osm_water_lakeline -> layer_water_name:z14_
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SELECT osm_id, geometry, name, name_en, 'lake'::text AS class
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FROM osm_water_lakeline
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WHERE geometry && bbox
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AND ((zoom_level BETWEEN 9 AND 13 AND LineLabel(zoom_level, NULLIF(name, ''), geometry))
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OR (zoom_level >= 14))
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-- etldoc: osm_water_point -> layer_water_name:z9_13
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-- etldoc: osm_water_point -> layer_water_name:z14_
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UNION ALL
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SELECT osm_id, geometry, name, name_en, 'lake'::text AS class
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FROM osm_water_point
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WHERE geometry && bbox AND (
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(zoom_level BETWEEN 9 AND 13 AND area > 70000*2^(20-zoom_level))
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OR (zoom_level >= 14)
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);
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$$ LANGUAGE SQL IMMUTABLE;
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