factor out searching for parent road for pois

sql/functions/normalization.sql

@@ -253,6 +253,23 @@ $$
 LANGUAGE plpgsql STABLE;
 
 
+CREATE OR REPLACE FUNCTION word_ids_from_name(lookup_word TEXT)
+  RETURNS INTEGER[]
+  AS $$
+DECLARE
+  lookup_token TEXT;
+  return_word_ids INTEGER[];
+BEGIN
+  lookup_token := ' '|| make_standard_name(lookup_word);
+  SELECT array_agg(word_id) FROM word
+    WHERE word_token = lookup_token and class is null and type is null
+    INTO return_word_ids;
+  RETURN return_word_ids;
+END;
+$$
+LANGUAGE plpgsql STABLE STRICT;
+
+
 CREATE OR REPLACE FUNCTION create_country(src HSTORE, country_code varchar(2))
   RETURNS VOID
   AS $$