Oracle function??è??ùμ??°(2)

   elsif v_temp > 9000 and v_temp <= 35000 then
     v_temp := v_temp * 0.25;
     v_quick_deduction := 9000*(0.25-0.2) + 4500*(0.2-0.1) ;
   elsif v_temp > 35000 and v_temp <= 55000 then
     v_temp := v_temp * 0.3;
     v_quick_deduction := 35000*(0.3-0.25) +  9000*(0.25-0.2);
   elsif v_temp > 55000 and v_temp <= 80000 then
     v_temp := v_temp * 0.35;
     v_quick_deduction := 55000*(0.35-0.3) + 35000*(0.3-0.25);
   elsif v_temp > 80000 then
     v_temp := v_temp * 0.45;
     v_quick_deduction := 80000*(0.45-0.35) + 55000*(0.35-0.3);
   else
     dbms_output.put_line(??à′?í2?ê?????!);
     v_temp := 0;
   end if;
   v_expense := v_temp - v_quick_deduction;
  return(v_expense);
end tax;2aê?￡o select tax(5000) from dual;

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