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MySQL修改用户密码,新手必看

Jun 07, 2016 pm 04:11 PM
mysql Revise password us newbie user Know

我们大家都知道MySQL修改用户密码这一问题一直是困扰新手的一个恶魔,在此问题的解决上新手经常会上范错误,而导致最终不能进入MySQL数据库,所以以下就是几个相关例子的介绍,望你能有所收获。 1、原来的密码是123456 C:\typeMySQL5.bat @echooff MySQL -ur

我们大家都知道MySQL修改用户密码这一问题一直是困扰新手的一个恶魔,在此问题的解决上新手经常会上范错误,而导致最终不能进入MySQL数据库,所以以下就是几个相关例子的介绍,望你能有所收获。

1、原来的密码是123456

<ol class="dp-xml">
<li class="alt">C:\>type MySQL5.bat  </li>
<li><span>@echo off  </span></li>
<li class="alt">MySQL<span> -uroot -p123456 -P3306 </span>
</li>
</ol>
Copy after login

正确的修改MySQL用户密码的格式是:

我们这里用

用户:root(可以换成其他的)

密码:woshiduide

来演示新密码。

<ol class="dp-xml">
<li class="alt">
<span><span>C:\</span><span class="tag">></span></span>MySQL<span><span>admin -uroot -p password woshiduide  </span></span>
</li>
<li><span>Enter password: ****** </span></li>
</ol>
Copy after login

于是修改成功。注意PASSWORD关键字后面的空格有好多人是这样修改的:

<ol class="dp-xml">
<li class="alt">
<span><span>C:\</span><span class="tag">></span></span>MySQL<span><span>admin -uroot -p password ‘woshiduide’  </span></span>
</li>
<li><span>Enter password: ******  </span></li>
<li class="alt">
<span>C:\</span><span class="tag">></span>MySQL<span>admin -uroot -p password ‘woshiduide’  </span>
</li>
<li><span>Enter password: *********  </span></li>
<li class="alt"><span>Warning: single quotes were not trimmed from the password by your command  </span></li>
<li><span>line client, as you might have expected.  </span></li>
<li class="alt"><span> </span></li>
</ol>
Copy after login

而这个时候真正的密码是’woshiduide’

<ol class="dp-xml">
<li class="alt">
<span><span>C:\</span><span class="tag">></span></span>MySQL<span><span> -uroot -p’woshiduide’  </span></span>
</li>
<li>
<span>Welcome to the </span>MySQL<span> monitor. Commands end with ; or \g.  </span>
</li>
<li class="alt">
<span>Your </span>MySQL<span> connection id is 18  </span>
</li>
<li>
<span>Server version: 5.1.17-beta-community-nt-debug </span>MySQL<span> Community Server (GPL)  </span>
</li>
<li class="alt"><span>Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the buffer.  </span></li>
<li>MySQL<span class="tag">></span><span> </span>
</li>
<li class="alt"><span> </span></li>
</ol>
Copy after login

MySQL修改用户密码实际操作中而新手往往这样:

<ol class="dp-xml">
<li class="alt">
<span><span>C:\</span><span class="tag">></span></span>MySQL<span><span> -uroot -pwoshiduide  </span></span>
</li>
<li><span>ERROR 1045 (28000): Access denied for user ‘root’@'localhost’ (using password: Y  </span></li>
<li class="alt"><span>ES) </span></li>
</ol>
Copy after login

所以非常郁闷,BAIDU、GOOGLE的搜了一大堆。

我现在把密码改回去。

<ol class="dp-xml"><li class="alt">
<span><span>C:\</span><span class="tag">></span></span>MySQL<span><span>admin -uroot -p’woshiduide’ password 123456 </span></span>
</li></ol>
Copy after login

2、还有就是可以直接进入MySQL,然后修改密码。

<ol class="dp-xml">
<li class="alt">MySQL<span class="tag">></span> use MySQL  </li>
<li><span>Database changed  </span></li>
<li class="alt">MySQL<span class="tag">></span><span> update user set </span><span class="attribute">PASSWORD</span><span class="attribute-value">PASSWORD</span><span> = PASSWORD(‘woshiduide’) where </span><span class="attribute">USER</span><span>=’root’ and H  </span>
</li>
<li>
<span class="attribute">OST</span><span>=’localhost’;  </span>
</li>
<li class="alt"><span>Query OK, 1 row affected (0.05 sec)  </span></li>
<li><span>Rows matched: 1 Changed: 1 Warnings: 0  </span></li>
<li class="alt">MySQL<span class="tag">></span><span> flush privileges;  </span>
</li>
<li>MySQL<span class="tag">></span><span> exit  </span>
</li>
<li class="alt"><span>Bye  </span></li>
<li>
<span>C:\</span><span class="tag">></span>MySQL<span> -uroot -pwoshiduide  </span>
</li>
<li class="alt">
<span>Welcome to the </span>MySQL<span> monitor. Commands end with ; or \g.  </span>
</li>
<li>
<span>Your </span>MySQL<span> connection id is 23  </span>
</li>
<li class="alt">
<span>Server version: 5.1.17-beta-community-nt-debug </span>MySQL<span> Community Server (GPL)  </span>
</li>
<li><span>Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the buffer.  </span></li>
<li class="alt">MySQL<span class="tag">></span><span> </span>
</li>
<li><span>Query OK, 0 rows affected (0.02 sec)  </span></li>
</ol>
Copy after login

3、还有一种就是用SET PASSWORD 命令修改:

<ol class="dp-xml">
<li class="alt">
<span><span>C:\</span><span class="tag">></span></span>MySQL<span><span>5.bat  </span></span>
</li>
<li><span>Enter password: ******  </span></li>
<li class="alt">
<span>Welcome to the </span>MySQL<span> monitor. Commands end with ; or \g.  </span>
</li>
<li>
<span>Your </span>MySQL<span> connection id is 8  </span>
</li>
<li class="alt">
<span>Server version: 5.1.17-beta-community-nt-debug-log </span>MySQL<span> Community Server (GPL)  </span>
</li>
<li><span>Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the buffer.  </span></li>
<li class="alt">MySQL<span class="tag">></span><span> set password for root@’localhost’ = password(‘woshiduide’);  </span>
</li>
<li><span>Query OK, 0 rows affected (0.02 sec)  </span></li>
<li class="alt">MySQL<span class="tag">></span><span> flush privileges;  </span>
</li>
<li><span>Query OK, 0 rows affected (0.09 sec)  </span></li>
<li class="alt">MySQL<span class="tag">></span><span> exit  </span>
</li>
<li><span>Bye  </span></li>
</ol>
Copy after login

4、GRANT 也可以,不过这里不介绍。因为涉及到权限的问题。

以上的相关内容就是对MySQL修改用户密码的介绍,望你能有所收获。
 


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