整理了以下四种在MySQL中修改root密码的方法,可能对大家有所帮助!
		方法1: 用SET PASSWORD命令
		  mysql -u root
		  mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');
		方法2:用mysqladmin
		 
		  mysqladmin -u root password "newpass"
		  如果root已经设置过密码,采用如下方法
		  mysqladmin -u root password oldpass "newpass"
		方法3: 用UPDATE直接编辑user表
		  mysql -u root
		  mysql> use mysql;
		  mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';
		  mysql> FLUSH PRIVILEGES;
		在丢失root密码的时候,可以这样
		  mysqld_safe --skip-grant-tables&
		  mysql -u root mysql
		  mysql> UPDATE user SET password=PASSWORD("new password") WHERE user='root';
		  mysql> FLUSH PRIVILEGES;