MySQL时间time类型相减求时长（超详细）

表OD结构：

想通过outTime - inTime求得duration

一开始想通过：

mysql> update OD
    -> set duration = outTime - inTime;

来更新，但是报错如下：

Incorrect time value: '9024' for column 'duration' at row 2

自己又试了试只更新一行数据，成功了：

mysql> update OD
    -> set duration = outTime - inTime where passengerID = 1;
Query OK, 1 row affected (0.92 sec)
Rows matched: 1  Changed: 1  Warnings: 0

但是更新第二行时又错了：

mysql> update OD
    -> set duration = outTime - inTime where passengerID = 2;
ERROR 1292 (22007): Incorrect time value: '9024' for column 'duration' at row 2

最后终于找到了解决办法：

mysql> update OD
    -> set duration = timediff(outTime,inTime);
Query OK, 1048387 rows affected (12.03 sec)
Rows matched: 1048575  Changed: 1048387  Warnings: 0

结果：

 

参考：https://blog.csdn.net/weixin_42550871/article/details/80816646 

https://blog.csdn.net/u013356658/article/details/51849533感谢