mysql5.5 3种修改密码方法

修改密码法一:
mysqladmin -u root -p\'oldpassword\' password \'newpassword\'

法二（进入数据库改）
update mysql.user set password=password(\'newpassword\') where user=\'root\' and host=\'localhost\';
flush privileges;

法三（进入数据库改）改的是当前用户的
set password=password(\'newpassword\'); (此方法不适合忘记密码找回)
flush privileges;