MySQL5.7.20解压版安装和修改root密码的教程

[client]
port = 3306
[mysqld]
port = 3306
basedir=%MYSQL_HOME%
datadir=%MYSQL_HOME%\data
max_connections=200
character-set-server=utf8
default-storage-engine=INNODB
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
#跳过密码
skip-grant-tables

>mysqld --initialize
>mysqld -install //安装MySQL服务 在services.msc中可以查看该服务
>net start/stop mysql //开启、关闭mysql

>mysql -u root -p
enter password：直接回车进入
mysql>update mysql.user set authentication_string=password('123') where user='root' and host='localhost';
mysql>flush privileges;

mysql error You must reset your password using ALTER USER statement before executing this statement.
mysql>SET PASSWORD=PASSWORD('123');
mysql>ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;
mysql>flush privileges;