oracle 四舍五入取得的数值
SELECT ROUND( number, [ decimal_places ] ) FROM DUAL


说明：

number : 将要处理的数值

decimal_places : 四舍五入，小数取几位,不填默认为0




Sample :


select round(123.456) from dual; 结果： 123

select round(123.456, 0) from dual; 结果： 123

select round(123.456, 1) from dual; 结果： 123.5

select round(123.456, 2) from dual; 结果：123.46

select round(123.456, 3) from dual; 结果： 123.456

select round(-123.456, 2) from dual; 结果：-123.46