How to do Pivoting in Oracle 10g

Question

Consider the following

Sample Input

SalesBoyName        Product       Amount
------------        -------       ------
Boy1                   


        

Answer 1

You can do it like this in 10G:

select salesboyname, 
       sum (case when product='P1' then amount end) as p1,
       sum (case when product='P2' then amount end) as p2,
       sum (case when product='P3' then amount end) as p3
from   tblsales
group by salesboyname;

In 11G there is a PIVOT keyword similar to SQL Server's.