Merge pull request #3178 from lonvia/library-documentation

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

diff --git a/lib-sql/indices.sql b/lib-sql/indices.sql
index 916d011710c64bff070368ccfb5fb912352de614..ed078895ee8901473ac0f613b97e6d9cabe8c88e 100644 (file)
--- a/lib-sql/indices.sql
+++ b/lib-sql/indices.sql
@@ -5,13 +5,6 @@
 -- Copyright (C) 2022 by the Nominatim developer community.
 -- For a full list of authors see the git log.
 
--- The following indicies are only useful during imoprt when all of placex is processed.
-
-{% if drop %}
-  DROP INDEX IF EXISTS idx_placex_rank_address_sector;
-  DROP INDEX IF EXISTS idx_placex_rank_boundaries_sector;
-{% endif %}
-
 -- Indices used only during search and update.
 -- These indices are created only after the indexing process is done.
 
@@ -28,12 +21,22 @@ CREATE INDEX IF NOT EXISTS idx_placex_parent_place_id
   ON placex USING BTREE (parent_place_id) {{db.tablespace.search_index}}
   WHERE parent_place_id IS NOT NULL;
 ---
+CREATE INDEX IF NOT EXISTS idx_placex_geometry ON placex
+  USING GIST (geometry) {{db.tablespace.search_index}};
+---
 CREATE INDEX IF NOT EXISTS idx_placex_geometry_reverse_lookupPolygon
   ON placex USING gist (geometry) {{db.tablespace.search_index}}
   WHERE St_GeometryType(geometry) in ('ST_Polygon', 'ST_MultiPolygon')
     AND rank_address between 4 and 25 AND type != 'postcode'
     AND name is not null AND indexed_status = 0 AND linked_place_id is null;
 ---
+-- used in reverse large area lookup
+CREATE INDEX IF NOT EXISTS idx_placex_geometry_reverse_lookupPlaceNode
+  ON placex USING gist (ST_Buffer(geometry, reverse_place_diameter(rank_search)))
+  {{db.tablespace.search_index}}
+  WHERE rank_address between 4 and 25 AND type != 'postcode'
+    AND name is not null AND linked_place_id is null AND osm_type = 'N';
+---
 CREATE INDEX IF NOT EXISTS idx_osmline_parent_place_id
   ON location_property_osmline USING BTREE (parent_place_id) {{db.tablespace.search_index}}
   WHERE parent_place_id is not null;
@@ -43,15 +46,32 @@ CREATE INDEX IF NOT EXISTS idx_osmline_parent_osm_id
 ---
 CREATE INDEX IF NOT EXISTS idx_postcode_postcode
   ON location_postcode USING BTREE (postcode) {{db.tablespace.search_index}};
--- Indices only needed for updating.
 
-{% if not drop %}
+{% if drop %}
+---
+  DROP INDEX IF EXISTS idx_placex_geometry_address_area_candidates;
+  DROP INDEX IF EXISTS idx_placex_geometry_buildings;
+  DROP INDEX IF EXISTS idx_placex_geometry_lower_rank_ways;
+  DROP INDEX IF EXISTS idx_placex_wikidata;
+  DROP INDEX IF EXISTS idx_placex_rank_address_sector;
+  DROP INDEX IF EXISTS idx_placex_rank_boundaries_sector;
+{% else %}
+-- Indices only needed for updating.
 ---
   CREATE INDEX IF NOT EXISTS idx_location_area_country_place_id
     ON location_area_country USING BTREE (place_id) {{db.tablespace.address_index}};
 ---
   CREATE UNIQUE INDEX IF NOT EXISTS idx_place_osm_unique
     ON place USING btree(osm_id, osm_type, class, type) {{db.tablespace.address_index}};
+---
+-- Table needed for running updates with osm2pgsql on place.
+  CREATE TABLE IF NOT EXISTS place_to_be_deleted (
+    osm_type CHAR(1),
+    osm_id BIGINT,
+    class TEXT,
+    type TEXT,
+    deferred BOOLEAN
+   );
 {% endif %}
 
 -- Indices only needed for search.
@@ -78,4 +98,5 @@ CREATE INDEX IF NOT EXISTS idx_postcode_postcode
       INCLUDE (startnumber, endnumber) {{db.tablespace.search_index}}
       WHERE startnumber is not null;
   {% endif %}
+
 {% endif %}