Query regarding display values

Question

Hi,
I Have a Table with column name as
agent_name
guest
billing
i have to display report as        
                                    2010                      2009
Agent_name           guest        billing        guest     billing
abc                           209       5000              300     6000      //209 is the count (guest),sum(billing) group by agent name and year
guest and billing is the single column in table and i have to  display only  top ten rows in desc order with maximum  of billing.
i am not able to write code for this query. please  help me to show these value.Edited by: 805629 on Feb 21, 2011 5:36 AM
Edited by: 805629 on Feb 21, 2011 5:38 AM

Answer 1

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I have the following table called sales
with sales
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      select 1 sales_id, 1 prod_id, 1001 inv_num, 120 qty from dual
      union all
      select 2 sales_id, 1 prod_id, 1002 inv_num, 25 qty from dual
select *
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