Improved update performance of place layer (#1509)

Improved update performance of place layer
- Refactored IDs to be unique in the following tables
  - place_city.osm_ids
  - place_continent_point.osm_ids
  - place_country.osm_ids
  - place_island_point.osm_ids
  - place_island_polygon.osm_ids
  - place_state.osm_ids
- Added analyze statements before update queries and restricted updates to INSERT and UPDATE operations during execution of the following functions
  - place_city.refresh
  - place_continent_point.refresh
  - place_country.refresh
  - place_island_point.refresh
  - place_island_polygon.refresh
  - place_state.refresh

layers/place/update_state_point.sql

@@ -6,7 +6,7 @@ CREATE SCHEMA IF NOT EXISTS place_state;
 
 CREATE TABLE IF NOT EXISTS place_state.osm_ids
 (
-    osm_id bigint
+    osm_id bigint PRIMARY KEY
 );
 
 -- etldoc: ne_10m_admin_1_states_provinces   -> osm_state_point
@@ -67,11 +67,7 @@ CREATE INDEX IF NOT EXISTS osm_state_point_rank_idx ON osm_state_point ("rank");
 CREATE OR REPLACE FUNCTION place_state.store() RETURNS trigger AS
 $$
 BEGIN
-    IF (tg_op = 'DELETE') THEN
-        INSERT INTO place_state.osm_ids VALUES (OLD.osm_id);
-    ELSE
-        INSERT INTO place_state.osm_ids VALUES (NEW.osm_id);
-    END IF;
+    INSERT INTO place_state.osm_ids VALUES (NEW.osm_id) ON CONFLICT (osm_id) DO NOTHING;
     RETURN NULL;
 END;
 $$ LANGUAGE plpgsql;
@@ -96,6 +92,11 @@ DECLARE
     t TIMESTAMP WITH TIME ZONE := clock_timestamp();
 BEGIN
     RAISE LOG 'Refresh place_state rank';
+
+    -- Analyze tracking and source tables before performing update
+    ANALYZE place_state.osm_ids;
+    ANALYZE osm_state_point;
+
     PERFORM update_osm_state_point(false);
     -- noinspection SqlWithoutWhere
     DELETE FROM place_state.osm_ids;
@@ -108,13 +109,13 @@ END;
 $$ LANGUAGE plpgsql;
 
 CREATE TRIGGER trigger_store
-    AFTER INSERT OR UPDATE OR DELETE
+    AFTER INSERT OR UPDATE
     ON osm_state_point
     FOR EACH ROW
 EXECUTE PROCEDURE place_state.store();
 
 CREATE TRIGGER trigger_flag
-    AFTER INSERT OR UPDATE OR DELETE
+    AFTER INSERT OR UPDATE
     ON osm_state_point
     FOR EACH STATEMENT
 EXECUTE PROCEDURE place_state.flag();