//1.获取年月日 时分秒
select SYSDATE() AS '年月日 时分秒';
2020-07-02 16:36:17
//2.获取(年月日)
select DATE(CURDATE()) as '年月日';
select CURDATE() as '年月日';
select current_date AS '年月日';
2020-07-02
//3.获取(时分秒)：
select time(SYSDATE()) AS '时分秒';
select CURtime() AS '时分秒';
16:36:17
//4.获取年份
select YEAR(CURDATE()) AS '年';
select YEAR(SYSDATE()) AS '年';
select year(CURRENT_DATE) AS '年' ;
2020
//5.获取月份
select MONTH(CURDATE()) AS '月';
select MONTH(SYSDATE()) AS '月';
select month(CURRENT_DATE) AS '月';
7
//6.获取日期中的日
select day(CURRENT_DATE) AS '日';
select day(CURDATE) AS '日';
select day(SYSDATE) AS '日';
3
//7.获取当年一月份
select CONCAT(YEAR(CURDATE()),'-','01');
2020-07
//8.获取当前系统小时：
select HOUR(SYSDATE()) AS '系统小时';
16
//9.获取当前系统分钟：
select MINUTE(SYSDATE()) AS '系统分钟';
36
//10.获取当前系统秒：
select SECOND(SYSDATE()) AS '系统秒';
17
//11.获取当前系统毫秒：
select MICROSECOND(SYSDATE()) AS '系统毫秒';
0
