SQL> CREATE TABLE sales(
2 product_id NUMBER(6),
3 cid NUMBER,
4 time_id DATE,
5 sold NUMBER(3),
6 amount NUMBER(10,2),
7 cost NUMBER(10,2)
8 );
Table created.
SQL>
SQL> select product_id,sum(sold),cume_dist () over (order by sum(sold) asc) as cume_dist
2 from sales
3 where to_char(time_id, 'yyyy-mm') = '2001-06'
4 group by product_id
5 order by sum(sold) desc;
no rows selected
SQL>
SQL> drop table sales;
Table dropped.