MySQL记录如何实现持续【动态更新】？

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TIMESTAMPDIFF函数可以灵活地计算两个时间戳之间的差异，包括天数、小时、分钟和秒。与datediff函数相比，TIMESTAMPDIFF提供了更多的灵活性。

计算天数差异的示例：sqlSELECT TIMESTAMPDIFF(DAY, '2023-01-01', '2023-01-10') AS days_difference;

计算小时差异的示例：sqlSELECT TIMESTAMPDIFF(HOUR, '2023-01-01 12:00:00', '2023-01-02 15:30:00') AS hours_difference;

计算分钟差异的示例：sqlSELECT TIMESTAMPDIFF(MINUTE, '2023-01-01 12:00:00', '2023-01-01 14:30:00') AS minutes_difference;

计算秒差异的示例：sqlSELECT TIMESTAMPDIFF(SECOND, '2023-01-01 12:00:00', '2023-01-01 12:01:30') AS seconds_difference;

一、更加灵活的TIMESTAMPDIFF

TIMESTAMPDIFF能干什么，可以计算相差天数、小时、分钟和秒，相比于datediff函数要灵活很多。格式是时间小的前，时间大的放在后面。