Mysql修改root密码的多种方法
            
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- 用SET PASSWORD命令
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 | mysql -u root
mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');
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- 用mysqladmin
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 | mysqladmin -u root password "newpass"
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如果root已经设置过密码,采用如下方法
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 | mysqladmin -u root password oldpass "newpass"
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- 用update直接编辑user表
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 | mysql -u root
mysql> use mysql;
mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';
mysql> FLUSH PRIVILEGES;
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- 在丢失root密码的时候,可以这样
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 | 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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