mac mysql5.7重置root密码

先停止mysql服务

//停止表权限
 cd /usr/local/mysql/bin/
./mysqld_safe --skip-grant-tables &

直接mysql 进入数据库

update mysql.user set authentication_string=password('newpassword') where user='root' and Host = 'localhost';
flush privileges

使用新密码进入数据库后任何操作都会提示：

ERROR  (HY000): You must reset your password using ALTER USER statement before executing this statement.
//你必须重置您的密码使用ALTER USER语句之前执行这

执行：

SET PASSWORD = PASSWORD('newpassword');

即可！