oracle8.1.6 select t.object_type as rel_type, t.pretty_name, t.indent, nvl(num.number_relationships,0) as number_relationships from (select t.pretty_name, t.object_type, rownum as inner_rownum, replace(lpad(' ', (level - 1) * 4), ' ', ' ') as indent from acs_object_types t connect by prior t.object_type = t.supertype start with t.object_type in ('membership_rel','composition_rel') order by lower(t.pretty_name)) t, (select r.rel_type, count(*) as number_relationships from acs_objects o, acs_rel_types r, app_group_distinct_rel_map m where r.rel_type = o.object_type and o.object_id = m.rel_id and m.package_id = :package_id group by r.rel_type) num where t.object_type = num.rel_type(+) order by t.inner_rownum