mysql

折腾了好久的macos＋apache+php+phpmyadmin 终于成功了！

MAC下安装与配置MySQL

MySql常用语句

 解决Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future:

 

MySQL Key值（PRI, UNI, MUL）的含义

PRI主键约束；

UNI唯一约束；

MUL可以重复。