我应该在MySQL中使用datetime或timestamp数据类型吗? [英] Should I use the datetime or timestamp data type in MySQL?

问题描述

建议您使用 datetime 或时间戳字段，为什么(使用MySQL)?

Would you recommend using a datetime or a timestamp field, and why (using MySQL)?

我正在服务器端使用PHP.

I'm working with PHP on the server side.

推荐答案

MySQL中的时间戳通常用于跟踪记录的更改，并且通常在每次更改记录时进行更新.如果要存储特定值，则应使用datetime字段.

Timestamps in MySQL are generally used to track changes to records, and are often updated every time the record is changed. If you want to store a specific value you should use a datetime field.

如果您想在使用UNIX时间戳还是本机MySQL日期时间字段之间做出选择，请使用本机格式.您可以通过这种方式在MySQL中进行计算 ("SELECT DATE_ADD(my_datetime, INTERVAL 1 DAY)")，如果要使用PHP对记录进行查询，则很容易将值的格式更改为UNIX时间戳("SELECT UNIX_TIMESTAMP(my_datetime)").

If you meant that you want to decide between using a UNIX timestamp or a native MySQL datetime field, go with the native format. You can do calculations within MySQL that way ("SELECT DATE_ADD(my_datetime, INTERVAL 1 DAY)") and it is simple to change the format of the value to a UNIX timestamp ("SELECT UNIX_TIMESTAMP(my_datetime)") when you query the record if you want to operate on it with PHP.

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