时间字段的类型用时间戳整型还是时间类型

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时间字段的类型用时间戳整型还是时间类型_MySQL

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May 31, 2016 am 08:49 AM

不管做什么项目，必须都得接触的东西就是时间类型。现在用时间戳存储日期数据（整型存储）已经是业界很平常的的事情，网上各大游戏公司，各大开源都是采取整型时间戳存储。整数存日期好处很多，程序判断直读，扩展性好，随意可转换xml,json等格式。不过有一个最大的缺点就是查数据库不直观，也就是说我们用管理工具打开数据库的时候，看到的是一堆数字，维护数据不方便。为了解决这一缺陷，我找到一方法，先上代码：

select *,DATE_FORMAT(FROM_UNIXTIME(datetimed/1000),"%Y-%m") from `testTable`

testTable是表名，datetimed是表里一个整型字段。本人用的是毫秒存储，但是mysql的FROM_UNIXTIME方法只能转秒，所以就/1000来计算。

用过织梦，Discuz开源的朋友应该都有过看到一堆头痛的整型时间的经历吧。这段mysql语句粘到管理工具运行就可以直观的看到日期结果了。

但是如果还有人觉得这样麻烦，我无话可说，毕竟有些做小项目的人不需要考虑扩展，也用不上对象格式转换。后台的操作基本用不上Date，都是把Date转成整型再计算，干嘛浪费时间精力存一个不方便转格式的Date型。众多大型开源都使用时间戳，允分证明了时间戳存储的优势。为了一个快一步的直观而放弃扩展，这值吗?

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