From: Sarah Hoffmann <lonvia@denofr.de>
Date: Fri, 23 Apr 2021 15:02:47 +0000 (+0200)
Subject: introduce index for finding surrounding buildings
X-Git-Tag: v4.0.0~93^2~26
X-Git-Url: https://git.openstreetmap.org./nominatim.git/commitdiff_plain/1b1ed820c3af58de7281607a8b82f6a5dfe37319?ds=inline

introduce index for finding surrounding buildings
---

diff --git a/lib-sql/functions/placex_triggers.sql b/lib-sql/functions/placex_triggers.sql
index 5ffd4e4b..dba301cb 100644
--- a/lib-sql/functions/placex_triggers.sql
+++ b/lib-sql/functions/placex_triggers.sql
@@ -26,8 +26,9 @@ BEGIN
       FROM placex
      WHERE ST_Covers(geometry, p.centroid)
            and geometry && p.centroid
+           and placex.address is not null
            and (placex.address ? 'housenumber' or placex.address ? 'street' or placex.address ? 'place')
-           and rank_search > 28 AND ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon')
+           and rank_search = 30 AND ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon')
      LIMIT 1;
     RAISE WARNING 'other address for % %: % (%)', p.osm_type, p.osm_id, address, p.centroid;
   END IF;
diff --git a/lib-sql/tables.sql b/lib-sql/tables.sql
index c254e2d4..9732c26c 100644
--- a/lib-sql/tables.sql
+++ b/lib-sql/tables.sql
@@ -154,6 +154,10 @@ CREATE INDEX idx_placex_osmid ON placex USING BTREE (osm_type, osm_id) {{db.tabl
 CREATE INDEX idx_placex_linked_place_id ON placex USING BTREE (linked_place_id) {{db.tablespace.address_index}} WHERE linked_place_id IS NOT NULL;
 CREATE INDEX idx_placex_rank_search ON placex USING BTREE (rank_search, geometry_sector) {{db.tablespace.address_index}};
 CREATE INDEX idx_placex_geometry ON placex USING GIST (geometry) {{db.tablespace.search_index}};
+CREATE INDEX idx_placex_geometry_buildings ON placex
+  USING GIST (geometry) {{db.tablespace.search_index}}
+  WHERE address is not null and rank_search = 30
+        and ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon');
 CREATE INDEX idx_placex_geometry_placenode ON placex
   USING GIST (geometry) {{db.tablespace.search_index}}
   WHERE osm_type = 'N' and rank_search < 26