introduce index for finding surrounding buildings

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

diff --git a/lib-sql/tables.sql b/lib-sql/tables.sql
index c254e2d43b848d0fe6bd43090f165ce6b317062c..9732c26cb3b82623e2fe5dd799d94fe24492b226 100644 (file)
--- 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