kopia lustrzana https://github.com/openmaptiles/openmaptiles
19 wiersze
535 B
MySQL
19 wiersze
535 B
MySQL
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CREATE OR REPLACE VIEW rail_z13 AS (
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SELECT * FROM rail
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WHERE class='rail'
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);
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CREATE OR REPLACE VIEW rail_z14 AS (
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SELECT * FROM rail
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);
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CREATE OR REPLACE FUNCTION layer_rail(bbox geometry, zoom_level int)
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RETURNS TABLE(geom geometry, class text, brunnel text) AS $$
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SELECT way AS geom, class::text, brunnel::text FROM (
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SELECT * FROM rail_z13 WHERE zoom_level = 13
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UNION ALL
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SELECT * FROM rail_z14 WHERE zoom_level >= 14
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) AS zoom_levels
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WHERE way && bbox;
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$$ LANGUAGE SQL IMMUTABLE;
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