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51CTO
16 天
不是,你还在随便设计数据库字段类型和长度?
二、数据类型那些事儿 咱们先来复习一下数据库里常见的数据类型,别急着跳过,这可是打基础的好时机。 整数类型:比如TINYINT、SMALLINT、MEDIUMINT、INT、BIGINT,这些就是用来存整数的。区别在于它们能存的范围不同,TINYINT最小,BIGINT最大。选的时候得根据实际 ...
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