NTILE Window Function Examples
The following example ranks into four ranking groups the price paid for Hamlet tickets on August 26, 2008. The result set is 17 rows, divided almost evenly among the rankings 1 through 4:
select eventname, caldate, pricepaid, ntile(4) over(order by pricepaid desc) from sales, event, date where sales.eventid=event.eventid and event.dateid=date.dateid and eventname='Hamlet' and caldate='2008-08-26' order by 4; eventname | caldate | pricepaid | ntile -----------+------------+-----------+------- Hamlet | 2008-08-26 | 1883.00 | 1 Hamlet | 2008-08-26 | 1065.00 | 1 Hamlet | 2008-08-26 | 589.00 | 1 Hamlet | 2008-08-26 | 530.00 | 1 Hamlet | 2008-08-26 | 472.00 | 1 Hamlet | 2008-08-26 | 460.00 | 2 Hamlet | 2008-08-26 | 355.00 | 2 Hamlet | 2008-08-26 | 334.00 | 2 Hamlet | 2008-08-26 | 296.00 | 2 Hamlet | 2008-08-26 | 230.00 | 3 Hamlet | 2008-08-26 | 216.00 | 3 Hamlet | 2008-08-26 | 212.00 | 3 Hamlet | 2008-08-26 | 106.00 | 3 Hamlet | 2008-08-26 | 100.00 | 4 Hamlet | 2008-08-26 | 94.00 | 4 Hamlet | 2008-08-26 | 53.00 | 4 Hamlet | 2008-08-26 | 25.00 | 4 (17 rows)
