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optimisation INSERT geo

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This commit is contained in:
cquest 2016-11-20 11:16:13 +01:00
parent 071005528f
commit ee082a91de
1 changed files with 3 additions and 4 deletions
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7
backend.py
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@ -112,10 +112,9 @@ class EventsResource(BaseEvent):
class EventResource(BaseEvent):
def maybe_insert_geometry(self, geometry, cur):
# insert into geo table if not existing
cur.execute("""INSERT INTO geo (hash, geom, geom_center)
SELECT *, st_centroid(geom) FROM
(SELECT md5(ewkt) as hash, st_setsrid(st_geomfromewkt(ewkt),4326) as geom FROM
(SELECT st_asewkt(st_geomfromgeojson( %s )) as ewkt) as g) as i
cur.execute("""INSERT INTO geo
SELECT geom, md5(st_asewkt(geom)) as hash, st_centroid(geom) as geom_center FROM
(SELECT st_setsrid(st_geomfromgeojson( %s ),4326) as geom) as g
WHERE ST_IsValid(geom)
ON CONFLICT DO NOTHING RETURNING hash;""",
(geometry,))