calculate importance from wikipedia

sql/tables.sql

@@ -210,6 +210,7 @@ CREATE TABLE placex (
   importance FLOAT,
   indexed_status INTEGER,
   indexed_date TIMESTAMP,
+  wikipedia TEXT, -- calculated wikipedia article name (language:title)
   geometry_sector INTEGER
   );
 SELECT AddGeometryColumn('placex', 'geometry', 4326, 'GEOMETRY', 2);
@@ -301,3 +302,28 @@ CREATE INDEX idx_import_polygon_delete_osmid ON import_polygon_delete USING BTRE
 
 drop sequence 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
+);
+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);
+