From aee9556afa31934d02840dfc75fe492edf3df4f3 Mon Sep 17 00:00:00 2001
From: andrewxhill <andrewxhill@gmail.com>
Date: Sat, 20 Sep 2014 00:12:25 +0200
Subject: [PATCH] admin0 synonym service

---
 geocoder/admin0/sql/synonym_service.sql | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 geocoder/admin0/sql/synonym_service.sql

diff --git a/geocoder/admin0/sql/synonym_service.sql b/geocoder/admin0/sql/synonym_service.sql
new file mode 100644
index 0000000..5b35c1a
--- /dev/null
+++ b/geocoder/admin0/sql/synonym_service.sql
@@ -0,0 +1,15 @@
+--CREATE TYPE synonym_lookup_v1 AS (q TEXT, adm0_a3 TEXT);
+
+--EXAMPLE
+-- SELECT (admin0_synonym_lookup(Array['United States', 'ESP'])).*
+
+CREATE OR REPLACE FUNCTION admin0_synonym_lookup(name text[])
+  RETURNS SETOF synonym_lookup_v1 AS $$
+  DECLARE 
+    ret synonym_lookup_v1%rowtype;
+  BEGIN
+  -- FOR ret IN
+  RETURN QUERY
+    SELECT d.q, n.adm0_a3 FROM (SELECT q, lower(regexp_replace(q, '[^a-zA-Z\u00C0-\u00ff]+', '', 'g'))::text x FROM (SELECT unnest(name) q) g) d LEFT OUTER JOIN admin0_synonyms s ON name_ = d.x GROUP BY d.q, n.adm0_a3;
+END
+$$ LANGUAGE 'plpgsql' SECURITY DEFINER;