我应该使用字段'datetime'还是'timestamp'? [英] Should I use field 'datetime' or 'timestamp'?
问题描述
建议您使用日期时间或 timestamp 字段,以及为什么(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,并且每次更改记录时都会更新。如果要存储特定值,则应使用datetime字段。
Timestamps in MySQL 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.
如果您希望在使用UNIX时间戳或本机MySQL日期时间字段之间进行判断,与原生格式一起去。您可以在MySQL中进行计算,方式为
(SELECT DATE_ADD(my_datetime,INTERVAL 1 DAY))
,将值的格式更改为当您使用PHP操作时,查询记录时,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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