many ways to change mysql password

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;

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