I need to have commissions calculated a number of different ways.
I'd like the actual calculations stored in a table, ...I think.
Then the user can select which calculation to use, the code gets sucked
into....
the calculations are made and everyone is happy.

Is there a way to do this?

Table:  

ID     Desc      Calculation
1      level1      income.amount=select sum(sales.amt) where .....;
                     rate= select sales.person from salespeople where id=
'john';
                     commission.paid=income.amount * rate;
                     insert into paid.commissions values sales.person,
date, rate,  
                     income.amount, commission.paid;