oracle8.1.6 select lpad(' ', level, '-') || pretty_name, object_type from acs_object_types connect by prior object_type = supertype start with object_type = 'content_revision' begin content_type.${register_method} ( $content_key => :content_type, $target_key => :target_type, relation_tag => :relation_tag, min_n => :min_n, max_n => :max_n ); end;