SQL select group query

Question

Below is my Table

Table1

+--------+----------+---------+  
| amount | make     | product |  
+--------+----------+---------+  
|    100 | Nokia    | Mo         


        

Answer 1

select product, make, amount, rnk
from (
  select l.product, l.make, l.amount, count(*) as rnk
  from table1 as l
  left join table1 as r
  on (r.product = l.product and l.amount <= r.amount) 
  group by l.product, l.make
) a
where rnk <= 2

see the ideea and other examples here: http://www.xaprb.com/blog/2005/09/27/simulating-the-sql-row_number-function/

and sql fiddle based on zane bien test data.