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Collapse water zoom level views to single line statements

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This commit is contained in:
lukasmartinelli 2016-10-09 17:44:19 +02:00
parent c2a0902e2c
commit 89eb088131
1 changed files with 14 additions and 28 deletions
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42
schema/layers/water.sql
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@ -116,47 +116,33 @@ CREATE OR REPLACE VIEW water_z14 AS (
CREATE OR REPLACE FUNCTION layer_water (bbox geometry, zoom_level int) CREATE OR REPLACE FUNCTION layer_water (bbox geometry, zoom_level int)
RETURNS TABLE(geom geometry) AS $$ RETURNS TABLE(geom geometry) AS $$
SELECT geom FROM ( SELECT geom FROM (
SELECT * FROM water_z0 SELECT * FROM water_z0 WHERE zoom_level = 0
WHERE zoom_level = 0
UNION ALL UNION ALL
SELECT * FROM water_z1 SELECT * FROM water_z1 WHERE zoom_level = 1
WHERE zoom_level = 1
UNION ALL UNION ALL
SELECT * FROM water_z2 SELECT * FROM water_z2 WHERE zoom_level = 2
WHERE zoom_level = 2
UNION ALL UNION ALL
SELECT * FROM water_z3 SELECT * FROM water_z3 WHERE zoom_level = 3
WHERE zoom_level = 3
UNION ALL UNION ALL
SELECT * FROM water_z4 SELECT * FROM water_z4 WHERE zoom_level = 4
WHERE zoom_level = 4
UNION ALL UNION ALL
SELECT * FROM water_z5 SELECT * FROM water_z5 WHERE zoom_level = 5
WHERE zoom_level = 5
UNION ALL UNION ALL
SELECT * FROM water_z6 SELECT * FROM water_z6 WHERE zoom_level = 6
WHERE zoom_level = 6
UNION ALL UNION ALL
SELECT * FROM water_z7 SELECT * FROM water_z7 WHERE zoom_level = 7
WHERE zoom_level = 7
UNION ALL UNION ALL
SELECT geom FROM water_z8 SELECT geom FROM water_z8 WHERE zoom_level = 8
WHERE zoom_level = 8
UNION ALL UNION ALL
SELECT geom FROM water_z9 SELECT geom FROM water_z9 WHERE zoom_level BETWEEN 9 AND 10
WHERE zoom_level BETWEEN 9 AND 10
UNION ALL UNION ALL
SELECT * FROM water_z11 SELECT * FROM water_z11 WHERE zoom_level = 11
WHERE zoom_level = 11
UNION ALL UNION ALL
SELECT * FROM water_z12 SELECT * FROM water_z12 WHERE zoom_level = 12
WHERE zoom_level = 12
UNION ALL UNION ALL
SELECT * FROM water_z13 SELECT * FROM water_z13 WHERE zoom_level = 13
WHERE zoom_level = 13
UNION ALL UNION ALL
SELECT * FROM water_z14 SELECT * FROM water_z14 WHERE zoom_level >= 14
WHERE zoom_level >= 14
) AS zoom_levels ) AS zoom_levels
WHERE geom && bbox; WHERE geom && bbox;
$$ LANGUAGE SQL IMMUTABLE; $$ LANGUAGE SQL IMMUTABLE;