在 MySQL 中创建表并实现 TIMESTAMPDIFF()?


TIMESTAMPDIFF() 计算两个日期或 datetime 表达式之间的差值。我们首先创建一个表 -

mysql> create table DemoTable665(
   PunchInTime datetime,
   PunchOutTime datetime,
   Details INT(11) AS (ABS(TIMESTAMPDIFF(second,PunchInTime,PunchOutTime)))
)ENGINE=MyISAM;
Query OK, 0 rows affected (0.23 sec)

使用 insert 命令在表中插入一些记录 -

mysql> insert into DemoTable665(PunchInTime,PunchOutTime) values('2019-09-21 9:30:10','2019-09-21 04:34:56');
Query OK, 1 row affected (0.05 sec)
mysql> insert into DemoTable665(PunchInTime,PunchOutTime) values('2019-11-11 10:00:20','2019-11-11 05:30:16');
Query OK, 1 row affected (0.04 sec)

使用 select 语句在表中显示所有记录 -

mysql> select *from DemoTable665;

这将生成以下输出 -

+---------------------+---------------------+---------+
| PunchInTime         | PunchOutTime        | Details |
+---------------------+---------------------+---------+
| 2019-09-21 09:30:10 | 2019-09-21 04:34:56 | 17714   |
| 2019-11-11 10:00:20 | 2019-11-11 05:30:16 | 16204   |
+---------------------+---------------------+---------+
2 rows in set (0.00 sec)

更新于: 23-Aug-2019

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