Fomula

Question

I am trying to create a fomula within a form that calculates balance from amount. I thought if I created a procedure it would do the trick but my Pl/sql is so poor that I keep getting error message.
create or replace procedure calcnewbalance as
balance;
amount;
withdraw;
deposit;
begin
if withdraw
then balance - amount
:= new balance
else
deposit
then balance + amount
:= newbalance
end if;
end;
can any one help me debug.
thanks
Betty

Answer 1

If you are creating a formula in Forms, then you need a function, not a procedure:
Function calcnewbalance
  (balance          in number,
   amount           in number,
   transaction_type in varchar2)
  Return number  is
    Balance_out    number;
begin
  if transaction_type ='WITHDRAW' then
    balance_out := balance - amount;
  elsif transaction_type ='DEPOSIT' then
    balance_out := balance + amount;
  end if;
  Return balance_out;
end calcnewbalance;