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HomeDatabaseMysql Tutorialmysql 更改root密码_MySQL

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

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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