return (:quality_class = 'VOC');

function CF_VOC1Formula return Number is
begin
  return case when :quality_class = 'VOC' then 1
              else 0
         end;
end;

function CF_NOTE2Formula return Char is
  v_temp varchar2(2000);
begin
  if :CS_NOTE > 0 then
     select 'NOTE: ' || STANDARD_NOTE_DESC 
     into v_temp
     from SA_STANDARD_NOTES
     where standard_note_id = 'PO-VOC'
       and plant = '01';
  end if;

  return v_temp;
exception 
  when no_data_found then
    return null; 
  -- If SA_STANDARD_NOTES table contains only a single record for each NOTE_ID, 
  -- TOO_MANY_ROWS can't be raised. If it can, what do you want to return, then? 
  -- If you know, handle it! If not, and for all other possible errors, let Oracle
  -- raise an exception.
end;