():可以获得当前的UTC时间;CURRENT_DATE(), CURRENT_TIME(), CURRENT_TIMESTAMP():就是CURDATE(), CURTIME(), NOW()的别名。...mysql> SELECT CURDATE(), CURTIME(), NOW();+------------+-----------+---------------------+| CURDATE()...> SELECT CURRENT_DATE(), CURRENT_TIME(), CURRENT_TIMESTAMP();+----------------+----------------+-----...----------------+| CURRENT_DATE() | CURRENT_TIME() | CURRENT_TIMESTAMP() |+----------------+---------...函数WEEKDAY()也返回一个数值,只是从周一开始,范围是0-6:mysql> SELECT CURDATE(), DAYNAME(CURDATE()), WEEKDAY(CURDATE());+--