PL/SQL数值或值错误:数字精度太大

Question

我有一个oracle 10g PL/SQL程序,我正试图运行,

程序

set serveroutput on size 10000;
DECLARE
     membership varchar2(1) :='Y';
     shipping number(2,2);
     quantity number(3) :=0;
BEGIN
   if membership = 'Y' then 
      if quantity  <= 3 then
        shipping := 3.00;
      elsif quantity > 3 and quantity <= 6 then
        shipping := 5.00;
      elsif quantity > 6 and quantity <= 10 then
        shipping := 7.00;
      elsif quantity > 10 then
        shipping := 9.00;
   end if;  
   elsif membership = 'N' then
      if quantity  <= 3 then
        shipping := 5.00;
      elsif quantity > 3 and quantity <= 6 then
        shipping := 7.50;
      elsif quantity > 6 and quantity <= 10 then
        shipping := 10.00;
      elsif quantity > 10 then
        shipping := 12.00;
   end if;  
end if;
DBMS_OUTPUT.PUT_LINE(shipping);
END;

我一直在犯的错误.起初我以为这只是因为我将数量分配给数字(3),所以我会与003进行比较,但这也不起作用.

 Error report:
 ORA-06502: PL/SQL: numeric or value error: number precision too large
 ORA-06512: at line 8
 06502. 00000 -  "PL/SQL: numeric or value error%s"
 *Cause:    
 *Action:

Answer 1

尝试shipping number(2,2)改为shipping number(4,2)

(2,2)基本上是说你想要2位数,其中2位在小数点后面.所以你的值范围是0到0.99.你真正想要的是"4位数,其中2位在小数点后",范围从0到99.99.