Removed useless NULLIF calls (#1214)

`NULLIF(wikipedia, '') IS NOT NULL` replaced by `wikipedia <> ''` https://stackoverflow.com/questions/23766084/best-way-to-check-for-empty-or-null-value
2021-09-20 11:19:24 +02:00
parent e8a3bc18c5
commit d49f524edd
4 changed files with 14 additions and 14 deletions
--- a/layers/poi/poi_stop_agg.sql
+++ b/layers/poi/poi_stop_agg.sql
@@ -5,7 +5,7 @@ SELECT uic_ref,
       count(*) AS count,
       CASE WHEN count(*) > 2 THEN ST_Centroid(ST_UNION(geometry)) END AS centroid
 FROM osm_poi_point
-WHERE nullif(uic_ref, '') IS NOT NULL
+WHERE uic_ref <> ''
  AND subclass IN ('bus_stop', 'bus_station', 'tram_stop', 'subway')
 GROUP BY uic_ref
 HAVING count(*) > 1