text: autocommit off;
  select a                            from
  	table(set(select d from inventory_v2 d)) as t(a) order by a;
  select a, a.p                    from 
  	table(set(select d from inventory_v2 d)) as t(a) order by a, a.p  ;
  select a, a.p, a.p.descr  from 
  	table(set(select d from inventory_v2 d)) as t(a)  order by a, a.p, a.p.descr desc;
  rollback;
  