postgresql7.1 select lpad(' ', (t.type_level - 1) * 4) as indent, t.pretty_name, t.rel_type from (select t.pretty_name, t.object_type as rel_type, tree_level(tree_sortkey) as type_level from acs_object_types t where t.object_type not in (select g.rel_type from group_rels g where g.group_id = :group_id) and (t.tree_sortkey like (select tree_sortkey || '%' from acs_object_types where object_type = 'membership_rel') or t.tree_sortkey like (select tree_sortkey || '%' from acs_object_types where object_type = 'composition_rel'))) t, acs_rel_types rel_type where t.rel_type = rel_type.rel_type and (rel_type.object_type_one = :group_type or acs_object_type__is_subtype_p(rel_type.object_type_one, :group_type) = 't')