add indexes for lookup of addressable areas

[nominatim.git] / lib-sql / tables.sql

diff --git a/lib-sql/tables.sql b/lib-sql/tables.sql
index 03431d95ac7bbb78c2b15688d72fe07b66cc52ff..2ad5243c8f93a0fd3a457429e0ae5939d6b021f6 100644 (file)
--- a/lib-sql/tables.sql
+++ b/lib-sql/tables.sql
@@ -162,12 +162,16 @@ 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_address_area_candidates ON placex
+  USING gist (geometry) {{db.tablespace.address_index}}
+  WHERE rank_address between 1 and 25
+        and ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon');
 CREATE INDEX idx_placex_geometry_buildings ON placex
-  USING {{postgres.spgist_geom}} (geometry) {{db.tablespace.search_index}}
+  USING {{postgres.spgist_geom}} (geometry) {{db.tablespace.address_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 {{postgres.spgist_geom}} (geometry) {{db.tablespace.search_index}}
+  USING {{postgres.spgist_geom}} (geometry) {{db.tablespace.address_index}}
   WHERE osm_type = 'N' and rank_search < 26
         and class = 'place' and type != 'postcode' and linked_place_id is null;
 CREATE INDEX idx_placex_wikidata on placex USING BTREE ((extratags -> 'wikidata')) {{db.tablespace.address_index}} WHERE extratags ? 'wikidata' and class = 'place' and osm_type = 'N' and rank_search < 26;