diff --git a/README.md b/README.md
index 71777f6..c65e1b9 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@ cartodb-postgresql
 
 PostgreSQL extension for CartoDB
 
+See https://github.com/CartoDB/cartodb/wiki/CartoDB-PostgreSQL-extension
+
 Depdenencies
 ------------
 
diff --git a/cartodb_hooks.sql b/cartodb_hooks.sql
index 5b46cc7..4915bb6 100644
--- a/cartodb_hooks.sql
+++ b/cartodb_hooks.sql
@@ -17,11 +17,10 @@ BEGIN
   -- We're only interested in real relations
   IF (event_info.new).relkind != 'r' THEN RETURN; END IF;
 
-  RAISE NOTICE 'Relation % of kind % created in namespace oid %',
+  RAISE DEBUG 'Relation % of kind % created in namespace oid %',
 	 event_info.relation, (event_info.new).relkind, (event_info.new).relnamespace;
 
   -- We don't want to react to alters triggered by superuser,
-  -- or we'd enter an infinite loop here
   IF current_setting('is_superuser') = 'on' THEN
     RAISE DEBUG 'no ddl trigger for superuser';
     RETURN;
@@ -45,14 +44,13 @@ BEGIN
 
   SELECT oid,* FROM pg_class WHERE oid = event_info.relation INTO rel;
 
-  RAISE NOTICE 'Column % altered by % (superuser? %) in relation % of kind %',
+  RAISE DEBUG 'Column % altered by % (superuser? %) in relation % of kind %',
 	 (event_info.old).attname, current_user, current_setting('is_superuser'), event_info.relation::regclass, rel.relkind;
 
   -- We're only interested in real relations
   IF rel.relkind != 'r' THEN RETURN; END IF;
 
   -- We don't want to react to alters triggered by superuser,
-  -- or we'd enter an infinite loop here
   IF current_setting('is_superuser') = 'on' THEN
     RAISE DEBUG 'no ddl trigger for superuser';
     RETURN;
@@ -64,7 +62,7 @@ BEGIN
 
   PERFORM cdb_enable_ddl_hooks();
 
-  -- TODO: invalidate varnish ?
+  -- TODO: invalidate varnish 
 
 END; $$;
 -- }
@@ -81,14 +79,13 @@ BEGIN
 
   SELECT oid,* FROM pg_class WHERE oid = event_info.relation INTO rel;
 
-  RAISE NOTICE 'Column % drop by % (superuser? %) in relation % of kind %',
+  RAISE DEBUG 'Column % drop by % (superuser? %) in relation % of kind %',
 	 (event_info.old).attname, current_user, current_setting('is_superuser'), event_info.relation::regclass, rel.relkind;
 
   -- We're only interested in real relations
   IF rel.relkind != 'r' THEN RETURN; END IF;
 
   -- We don't want to react to drops triggered by superuser,
-  -- or we'd enter an infinite loop here
   IF current_setting('is_superuser') = 'on' THEN
     RAISE DEBUG 'no ddl trigger for superuser';
     RETURN;
@@ -100,7 +97,7 @@ BEGIN
 
   PERFORM cdb_enable_ddl_hooks();
 
-  -- TODO: invalidate varnish ?
+  -- TODO: invalidate varnish 
 
 END; $$;
 -- }
@@ -117,24 +114,19 @@ BEGIN
 
   SELECT oid,* FROM pg_class WHERE oid = event_info.relation INTO rel;
 
-  RAISE NOTICE 'Column % add by % (superuser? %) in relation % of kind %',
-	 (event_info.old).attname, current_user, current_setting('is_superuser'), event_info.relation::regclass, rel.relkind;
+  RAISE DEBUG 'Column % added by % (superuser? %) in relation % of kind %',
+	 (event_info.new).attname, current_user, current_setting('is_superuser'), event_info.relation::regclass, rel.relkind;
 
   -- We're only interested in real relations
   IF rel.relkind != 'r' THEN RETURN; END IF;
 
   -- We don't want to react to drops triggered by superuser,
-  -- or we'd enter an infinite loop here
   IF current_setting('is_superuser') = 'on' THEN
     RAISE DEBUG 'no ddl trigger for superuser';
     RETURN;
   END IF;
 
-  --PERFORM cdb_disable_ddl_hooks();
-  --PERFORM public.CDB_CartodbfyTable(event_info.relation);
-  --PERFORM cdb_enable_ddl_hooks();
-
-  -- TODO: invalidate varnish ?
+  -- TODO: invalidate varnish
 
 END; $$;
 -- }
@@ -151,7 +143,7 @@ CREATE OR REPLACE FUNCTION cdb_enable_ddl_hooks() returns void AS $$
  CREATE EVENT TRIGGER cdb_on_relation_create ON "relation_create" EXECUTE PROCEDURE cdb_handle_create_table();
  CREATE EVENT TRIGGER cdb_on_alter_column ON "column_alter" EXECUTE PROCEDURE cdb_handle_alter_column();
  CREATE EVENT TRIGGER cdb_on_drop_column ON "column_drop" EXECUTE PROCEDURE cdb_handle_drop_column();
- CREATE EVENT TRIGGER cdb_on_add_column ON "column_drop" EXECUTE PROCEDURE cdb_handle_add_column();
+ CREATE EVENT TRIGGER cdb_on_add_column ON "column_add" EXECUTE PROCEDURE cdb_handle_add_column();
 $$ LANGUAGE sql;
 
 SELECT cdb_enable_ddl_hooks();
diff --git a/hook_on_table_create.sql b/hook_on_table_create.sql
index 9f87452..e9b9a3a 100644
--- a/hook_on_table_create.sql
+++ b/hook_on_table_create.sql
@@ -16,4 +16,6 @@ alter table c.t3 rename column the_geom_webmercator to webmerc2;
 select * from c.t3;
 alter table c.t3 drop column the_geom_webmercator;
 select * from c.t3;
+alter table c.t3 add column id2 int;
+select * from c.t3;
 drop schema c cascade;