前面，两篇分别介绍了，MySQL的字符串函数和数值函数，接下来，一起学习下日期函数，走起
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1.NOW()获取当前时间
SQL语句：SELECT NOW() as temporary_time
2.YEAR()获取当前年份
SQL语句：SELECT YEAR(NOW()) as temporary_time
3.MONTH()获取当前月份
SQL语句：SELECT MONTH(NOW()) as temporary_time
4.WEEK()获取当前是今年的第几周
SQL语句：SELECT WEEK(NOW()) as temporary_time
5.DAY()获取本月几号
SQL语句：SELECT DAY(NOW()) as temporary_time
6.HOUR()获取当前小时
SQL语句：SELECT HOUR(NOW()) as temporary_time
7.MINUTE()获取当前分钟
SQL语句：SELECT MINUTE(NOW()) as temporary_time
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8.MONTHNAME()返回英文月份
SQL语句：SELECT MONTHNAME(NOW()) as temporary_time
9.CURDATE()返回当前日期，只包含年月日
SQL语句：SELECT CURDATE() as temporary_time
10.CURTIME() 返回当前时间，只包含时分秒
SQL语句：SELECT CURTIME() as temporary_time
11.UNIX_TIMESTAMP()返回时间戳
SQL语句：SELECT UNIX_TIMESTAMP(NOW()) as temporary_time
12.FROM_UNIXTIME()返回对应时间戳的日期值
SQL语句：SELECT FROM_UNIXTIME(1612166213) as temporary_time
13.DATE_FORMAT(date,format)格式化 日期函数
SQL语句：SELECT DATE_FORMAT(NOW(),’%Y-%m-%d’) as temporary_time
14. DATEDIFF(x,y) 计算日期相差多少天,y-x
SQL语句：SELECT DATEDIFF(‘1995-11-06′,’1994-09-22’) as temporary_time
收工
年前最后一更
新年快乐！
祝各位：新的一年，恭喜发财，万事如意
来年我们一起努力！
