windows
1.mysql Zip(压缩包)安装：https://dev.mysql.com/downloads/file/?id=487427
2.解压
3.配置环境变量
4.新建一个 my.ini 文件 在里面写入 如下~
[mysqld]
port = 3306
basedir=C:/software/mysql-5.7.21-winx64
datadir=C:/software/mysql-5.7.21-winx64/data
max_connections=200
character-set-server=utf8
default-storage-engine=INNODB
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
[mysql]
default-character-set=utf8
5.安装 mysql mysqld -install
6.mysql 初始化 mysqld --initialize-insecure --user=mysql
7.启动 mysql 服务 net start mysql ( 停止 mysql 服务 net stop mysql )
8.重设 mysql 密码 SET PASSWORD FOR 'root'@'localhost' = PASSWORD('123');