oracle笔记之计算年龄、工龄

方法一：利用months_between 函数计算

SELECT TRUNC(months_between(sysdate, birthday)/12) AS age
from dual;

方法二：日期转换为 'yyyyMMdd' 格式后，相差一年的两个日期差为：10000
select TRUNC((to_char(sysdate, 'yyyyMMdd') - to_char(birth, 'yyyyMMdd')) /
10000) as age
from mytable
 

来源：https://www.cnblogs.com/Bokeyan/p/11582661.html