1、本年份

SELECT YEAR(now())
SELECT DATE_FORMAT(NOW(), '%Y')

2、本月份(例如:1、01、January)

SELECT MONTH(now())
SELECT DATE_FORMAT(NOW(), '%m')
SELECT DATE_FORMAT(NOW(), '%M')

3、本日期

SELECT Day(now())
SELECT DATE_FORMAT(NOW(), '%D')
SELECT DATE_FORMAT(NOW(), '%d')

4、当前时间

SELECT DATE_FORMAT(NOW(), '%T')
select DATE_FORMAT(now(),'%Y-%m-%d %h:%i:%s') from dual