- SELECT p.prod_name as Denumire_Produs, sum(c.unit_cost) as Total_Cost,
- dense_rank() over (order by sum(c.unit_cost)desc)as Pozitie
- FROM products p,costs c,times t
- WHERE p.prod_id=c.prod_id
- and t.time_id=c.time_id
- and t.calendar_month_desc IN ('1999-10','1999-11','1999-12')
- GROUP BY p.prod_name;