Merge pull request #61 from CartoDB/iri/adm1synsql

Updates sql to remove duplicates avoiding auto-deletion

geocoder/admin1/sql/build_admin1_synonyms.sql

@@ -111,9 +111,18 @@ DELETE FROM admin1_synonyms
         FROM 
             admin1_synonyms a 
         WHERE 
-            0 < (
+            1 < (
                 SELECT count(*) 
                 FROM admin1_synonyms 
                 WHERE name_ = a.name_ 
                   AND global_id = a.global_id 
-                  AND rank < a.rank));
+                  AND rank <= a.rank)
+            AND 
+            cartodb_id != (
+                SELECT 
+                min(cartodb_id) 
+                FROM admin1_synonyms 
+                WHERE name_ = a.name_ 
+                  AND global_id = a.global_id 
+                  AND rank = a.rank)
+            );