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+#### MySQL提供了大量的数据类型，为了优化存储、提高数据库性能，在任何情况下均应使用最精确的类型，即在所有可以表示该列值的类型中，该类型使用的存储最少。
+
+- ##### 整形和浮点形选择
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	`1`	`+#### MySQL提供了大量的数据类型，为了优化存储、提高数据库性能，在任何情况下均应使用最精确的类型，即在所有可以表示该列值的类型中，该类型使用的存储最少。`
	`2`	`+`
	`3`	`+- ##### 整形和浮点形选择`