MySQL修改密码方法总结_MySQL
MySQL修改密码方法总结
首先要声明一点,大部分情况下,修改MySQL是需要有mysql里的root权限的,所以一般用户无法更改密码,除非请求管理员。
方法一
使用phpmyadmin,这是最简单的了,修改mysql库的user表,
不过别忘了使用PASSWORD函数。
方法二
使用mysqladmin,这是前面声明的一个特例。
mysqladmin -u root -p password mypasswd
输入这个命令后,需要输入root的原密码,然后root的密码将改为mypasswd。
把命令里的root改为你的用户名,你就可以改你自己的密码了。
当然如果你的mysqladmin连接不上mysql server,或者你没有办法执行mysqladmin,
那么这种方法就是无效的。
而且mysqladmin无法把密码清空。
下面的方法都在mysql提示符下使用,且必须有mysql的root权限:
方法三
mysql> INSERT INTO mysql.user (Host,User,Password)
VALUES(%,jeffrey,PASSWORD(iscuit));
mysql> FLUSH PRIVILEGES
确切地说这是在增加一个用户,用户名为jeffrey,密码为biscuit。
在《mysql中文参考手册》里有这个例子,所以我也就写出来了。
注意要使用PASSWORD函数,然后还要使用FLUSH PRIVILEGES。
方法四
和方法三一样,只是使用了REPLACE语句
mysql> REPLACE INTO mysql.user (Host,User,Password)
VALUES(%,jeffrey,PASSWORD(iscuit));
mysql> FLUSH PRIVILEGES
方法五
使用SET PASSWORD语句,
mysql> SET PASSWORD FOR jeffrey@\"%\" = PASSWORD(iscuit);
你也必须使用PASSWORD()函数,
但是不需要使用FLUSH PRIVILEGES。
方法六
使用GRANT ... IDENTIFIED BY语句
mysql> GRANT USAGE ON *.* TO jeffrey@\"%\" IDENTIFIED BY iscuit;
这里PASSWORD()函数是不必要的,也不需要使用FLUSH PRIVILEGES。
注意: PASSWORD() [不是]以在Unix口令加密的同样方法施行口令加密。

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