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如何存储 MySQL 的平均评分?
原标题:How to store average rating in MySQL?

MySQL 数据类型最适合什么来存储平均评分值, 比如 IMDB 上的电影评分? FLOAT, DEIMAL? 或者如果我将实际数值四舍五入PHP的两位小数点位数,并像INT( 8.323234 - & gt; 8.32 - gt; 832)?

,它会更快发挥作用?
问题回答

您不关心精确度, 所以不需要使用小数点。 如果您想要只使用整数, 请使用 int。 else, 使用浮点或双倍 。

首先在 PHP 中将它四舍五入不会给您带来任何好处 。 在 PHP 中将其转换为 int 和 double, 比在数据库中存储双倍要慢 。

The most performant, fast and small data type will indeed be INT. Sorting, searching, etc. will be the best with this data type, vs. decimal and/or float.



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