mysql 日期相关 CURRENT_TIMESTAMP, CURRENT_DATE, CURRENT_TIME

MySQL 时间函数

SELECT CURRENT_TIMESTAMP, CURRENT_DATE, CURRENT_TIME, CURRENT_TIME(), NOW();

 https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html

mysql 日期数据类型

http://www.runoob.com/mysql/mysql-data-types.html