2b95d1cffa
* All functions that access database must be declared as `STABLE`, not `IMMUTABLE` -- because database can change at any moment, e.g. during an update * there are a few functions that could be made `STRICT` -- passing `NULL` as a parameter will always result in a `NULL`, but for some reason that causes a significant decrease in perf. * tagged one function as parallel safe NOTE: somehow `ST_AsMVT()` method of tile generation is showing 70-90% slowdown with this patch. I am not sure of why this is happening. If the reason is the `IMMUTABLE` -> `STABLE` change, we may have to dig deeper into PG optimization
62 lines
2.2 KiB
PL/PgSQL
62 lines
2.2 KiB
PL/PgSQL
-- etldoc: layer_aeroway[shape=record fillcolor=lightpink, style="rounded,filled",
|
|
-- etldoc: label="layer_aeroway |<z10> z10|<z11> z11|<z12> z12|<z13> z13|<z14_> z14+" ];
|
|
|
|
CREATE OR REPLACE FUNCTION layer_aeroway(bbox geometry, zoom_level int)
|
|
RETURNS TABLE
|
|
(
|
|
geometry geometry,
|
|
class text,
|
|
ref text
|
|
)
|
|
AS
|
|
$$
|
|
SELECT geometry, aeroway AS class, ref
|
|
FROM (
|
|
-- etldoc: osm_aeroway_linestring_gen3 -> layer_aeroway:z10
|
|
SELECT geometry, aeroway, ref
|
|
FROM osm_aeroway_linestring_gen3
|
|
WHERE zoom_level = 10
|
|
UNION ALL
|
|
-- etldoc: osm_aeroway_linestring_gen2 -> layer_aeroway:z11
|
|
SELECT geometry, aeroway, ref
|
|
FROM osm_aeroway_linestring_gen2
|
|
WHERE zoom_level = 11
|
|
UNION ALL
|
|
-- etldoc: osm_aeroway_linestring_gen1 -> layer_aeroway:z12
|
|
SELECT geometry, aeroway, ref
|
|
FROM osm_aeroway_linestring_gen1
|
|
WHERE zoom_level = 12
|
|
UNION ALL
|
|
-- etldoc: osm_aeroway_linestring -> layer_aeroway:z13
|
|
-- etldoc: osm_aeroway_linestring -> layer_aeroway:z14_
|
|
SELECT geometry, aeroway, ref
|
|
FROM osm_aeroway_linestring
|
|
WHERE zoom_level >= 13
|
|
UNION ALL
|
|
|
|
-- etldoc: osm_aeroway_polygon_gen3 -> layer_aeroway:z10
|
|
-- etldoc: osm_aeroway_polygon_gen3 -> layer_aeroway:z11
|
|
SELECT geometry, aeroway, ref
|
|
FROM osm_aeroway_polygon_gen3
|
|
WHERE zoom_level BETWEEN 10 AND 11
|
|
UNION ALL
|
|
-- etldoc: osm_aeroway_polygon_gen2 -> layer_aeroway:z12
|
|
SELECT geometry, aeroway, ref
|
|
FROM osm_aeroway_polygon_gen2
|
|
WHERE zoom_level = 12
|
|
UNION ALL
|
|
-- etldoc: osm_aeroway_polygon_gen1 -> layer_aeroway:z13
|
|
SELECT geometry, aeroway, ref
|
|
FROM osm_aeroway_polygon_gen1
|
|
WHERE zoom_level = 13
|
|
UNION ALL
|
|
-- etldoc: osm_aeroway_polygon -> layer_aeroway:z14_
|
|
SELECT geometry, aeroway, ref
|
|
FROM osm_aeroway_polygon
|
|
WHERE zoom_level >= 14
|
|
) AS zoom_levels
|
|
WHERE geometry && bbox;
|
|
$$ LANGUAGE SQL STABLE
|
|
-- STRICT
|
|
PARALLEL SAFE;
|