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CTEs always materialise so inline the union zoom level views ⚠️

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lukasmartinelli
2016-10-08 21:27:28 +02:00
parent d53ca84a36
commit 63985fca1e
9 changed files with 52 additions and 60 deletions
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5
schema/layers/boundary.sql
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@@ -88,7 +88,7 @@ CREATE OR REPLACE VIEW boundary_z10 AS (
CREATE OR REPLACE FUNCTION layer_boundary (bbox geometry, zoom_level int)
RETURNS TABLE(geom geometry, admin_level int, scalerank int, class text) AS $$
WITH zoom_levels AS (
SELECT geom, admin_level, scalerank::int, class FROM (
SELECT * FROM boundary_z0 WHERE zoom_level = 0
UNION ALL
SELECT * FROM boundary_z1 WHERE zoom_level BETWEEN 1 AND 2
@@ -118,7 +118,6 @@ RETURNS TABLE(geom geometry, admin_level int, scalerank int, class text) AS $$
UNION ALL
SELECT geom, admin_level, scalerank, class
FROM boundary_z10 WHERE zoom_level >= 13
)
SELECT geom, admin_level, scalerank::int, class FROM zoom_levels
) AS zoom_levels
WHERE geom && bbox;
$$ LANGUAGE SQL IMMUTABLE;