X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/a1158feeb8ef3637ee7c2e1b8ee74cdce579584e..981b87983087680cefca700a4aaf2f60e013520e:/lib-sql/tables.sql

diff --git a/lib-sql/tables.sql b/lib-sql/tables.sql
index 2ad5243c..d3bc972a 100644
--- a/lib-sql/tables.sql
+++ b/lib-sql/tables.sql
@@ -137,7 +137,9 @@ CREATE TABLE place_addressline (
   ) {{db.tablespace.search_data}};
 CREATE INDEX idx_place_addressline_place_id on place_addressline USING BTREE (place_id) {{db.tablespace.search_index}};
 
-drop table if exists placex;
+---------  PLACEX - storage for all indexed places -----------------
+
+DROP TABLE IF EXISTS placex;
 CREATE TABLE placex (
   place_id BIGINT NOT NULL,
   parent_place_id BIGINT,
@@ -157,24 +159,65 @@ CREATE TABLE placex (
   postcode TEXT,
   centroid GEOMETRY(Geometry, 4326)
   ) {{db.tablespace.search_data}};
+
 CREATE UNIQUE INDEX idx_place_id ON placex USING BTREE (place_id) {{db.tablespace.search_index}};
-CREATE INDEX idx_placex_osmid ON placex USING BTREE (osm_type, osm_id) {{db.tablespace.search_index}};
-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}};
+{% for osm_type in ('N', 'W', 'R') %}
+CREATE INDEX idx_placex_osmid_{{osm_type | lower}} ON placex
+  USING BTREE (osm_id) {{db.tablespace.search_index}}
+  WHERE osm_type = '{{osm_type}}';
+{% endfor %}
+
+-- Usage: - removing linkage status on update
+--        - lookup linked places for /details
+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;
+
+-- Usage: - check that admin boundaries do not overtake each other rank-wise
+--        - check that place node in a admin boundary with the same address level
+--        - boundary is not completely contained in a place area
+--        - parenting of large-area or unparentable features
 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');
+
+-- Usage: - POI is within building with housenumber
 CREATE INDEX idx_placex_geometry_buildings ON placex
   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');
+
+-- Usage: - linking of similar named places to boundaries
+--        - linking of place nodes with same type to boundaries
 CREATE INDEX idx_placex_geometry_placenode ON placex
   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;
+        and class = 'place' and type != 'postcode';
+
+-- Usage: - is node part of a way?
+--        - find parent of interpolation spatially
+CREATE INDEX idx_placex_geometry_lower_rank_ways ON placex
+  USING {{postgres.spgist_geom}} (geometry) {{db.tablespace.address_index}}
+  WHERE osm_type = 'W' and rank_search >= 26;
+
+-- Usage: - linking place nodes by wikidata tag to boundaries
+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;
+
+-- The following two indexes function as a todo list for indexing.
+
+CREATE INDEX idx_placex_rank_address_sector ON placex
+  USING BTREE (rank_address, geometry_sector) {{db.tablespace.address_index}}
+  WHERE indexed_status > 0;
+
+CREATE INDEX idx_placex_rank_boundaries_sector ON placex
+  USING BTREE (rank_search, geometry_sector) {{db.tablespace.address_index}}
+  WHERE class = 'boundary' and type = 'administrative'
+        and indexed_status > 0;
+
 
 DROP SEQUENCE IF EXISTS seq_place;
 CREATE SEQUENCE seq_place start 1;
@@ -230,35 +273,27 @@ GRANT SELECT ON import_polygon_delete TO "{{config.DATABASE_WEBUSER}}";
 DROP SEQUENCE IF EXISTS file;
 CREATE SEQUENCE file start 1;
 
--- null table so it won't error
--- deliberately no drop - importing the table is expensive and static, if it is already there better to avoid removing it
-CREATE TABLE wikipedia_article (
-    language text NOT NULL,
-    title text NOT NULL,
-    langcount integer,
-    othercount integer,
-    totalcount integer,
-    lat double precision,
-    lon double precision,
-    importance double precision,
-    osm_type character(1),
-    osm_id bigint,
-    wd_page_title text,
-    instance_of text
-);
-ALTER TABLE ONLY wikipedia_article ADD CONSTRAINT wikipedia_article_pkey PRIMARY KEY (language, title);
-CREATE INDEX idx_wikipedia_article_osm_id ON wikipedia_article USING btree (osm_type, osm_id);
-
-CREATE TABLE wikipedia_redirect (
-    language text,
-    from_title text,
-    to_title text
-);
-ALTER TABLE ONLY wikipedia_redirect ADD CONSTRAINT wikipedia_redirect_pkey PRIMARY KEY (language, from_title);
+{% if 'wikimedia_importance' not in db.tables and 'wikipedia_article' not in db.tables %}
+-- create dummy tables here, if nothing was imported
+CREATE TABLE wikimedia_importance (
+  language TEXT NOT NULL,
+  title TEXT NOT NULL,
+  importance double precision NOT NULL,
+  wikidata TEXT
+)  {{db.tablespace.address_data}};
+{% endif %}
 
 -- osm2pgsql does not create indexes on the middle tables for Nominatim
 -- Add one for lookup of associated street relations.
-CREATE INDEX planet_osm_rels_parts_associated_idx ON planet_osm_rels USING gin(parts) WHERE tags @> ARRAY['associatedStreet'];
+{% if db.middle_db_format == '1' %}
+CREATE INDEX planet_osm_rels_parts_associated_idx ON planet_osm_rels USING gin(parts)
+  {{db.tablespace.address_index}}
+  WHERE tags @> ARRAY['associatedStreet'];
+{% else %}
+CREATE INDEX planet_osm_rels_relation_members_idx ON planet_osm_rels USING gin(planet_osm_member_ids(members, 'R'::character(1)))
+  WITH (fastupdate=off)
+  {{db.tablespace.address_index}};
+{% endif %}
 
 -- Needed for lookups if a node is part of an interpolation.
 CREATE INDEX IF NOT EXISTS idx_place_interpolations