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>
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>
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>
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>
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>
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>
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>
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>
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。

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了关于架构原理的相关内容,MySQL Server架构自顶向下大致可以分网络连接层、服务层、存储引擎层和系统文件层,下面一起来看一下,希望对大家有帮助。

方法:1、利用right函数,语法为“update 表名 set 指定字段 = right(指定字段, length(指定字段)-1)...”;2、利用substring函数,语法为“select substring(指定字段,2)..”。

mysql的msi与zip版本的区别:1、zip包含的安装程序是一种主动安装,而msi包含的是被installer所用的安装文件以提交请求的方式安装;2、zip是一种数据压缩和文档存储的文件格式,msi是微软格式的安装包。

在mysql中,可以利用char()和REPLACE()函数来替换换行符;REPLACE()函数可以用新字符串替换列中的换行符,而换行符可使用“char(13)”来表示,语法为“replace(字段名,char(13),'新字符串') ”。

转换方法:1、利用cast函数,语法“select * from 表名 order by cast(字段名 as SIGNED)”;2、利用“select * from 表名 order by CONVERT(字段名,SIGNED)”语句。

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了关于MySQL复制技术的相关问题,包括了异步复制、半同步复制等等内容,下面一起来看一下,希望对大家有帮助。

本篇文章给大家带来了关于mysql的相关知识,其中主要介绍了mysql高级篇的一些问题,包括了索引是什么、索引底层实现等等问题,下面一起来看一下,希望对大家有帮助。

在mysql中,可以利用REGEXP运算符判断数据是否是数字类型,语法为“String REGEXP '[^0-9.]'”;该运算符是正则表达式的缩写,若数据字符中含有数字时,返回的结果是true,反之返回的结果是false。


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

Dreamweaver Mac version
Visual web development tools

Notepad++7.3.1
Easy-to-use and free code editor

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SublimeText3 Mac version
God-level code editing software (SublimeText3)
