操作系统:WINDOWS7 系统 数据库版本:mysql 5.1 提示: mysql ERROR 1045 access denied for user 'root'@'localhost' using password yes/no 通过localhost和127.0.0.1访问没有问题,用IP访问出现这个错误 1. 管理员登陆系统,停止 MySQL 服务或者结束 MyS
操作系统:WINDOWS7 系统
提示:mysql ERROR 1045 access denied for user 'root'@'localhost' using password yes/no
通过localhost和127.0.0.1访问没有问题,用IP访问出现这个错误
1. 管理员登陆系统,停止 MySQL 服务或者结束 MySQL 进程。
2. 启动 WINDOWS 的命令行窗口(即通常的 DOS 窗口:运行cmd),切换到你的 “MySQL\bin” 目录下。
例如我的是 “D:\Program Files\MySQL\MySQL Server 5.2\bin”,然后执行下面的粗体的命令:(注意你的 “my.ini” 位置)
Microsoft Windows XP [版本 5.1.2600]
C:\>cd D:\Program Files\MySQL\MySQL Server 5.2\bin
C:\>d:
D:\Program Files\MySQL\MySQL Server 5.2\bin>mysqld --defaults-file="D:\Program Files\MySQL\MySQL Server 5.2\my.ini" --console --skip-grant-tables
100608 9:04:12 InnoDB: Started; log sequence number 0 46409
100608 9:04:12 [Note] mysqld: ready for connections.Version: '5.2.0-falcon-alpha-community' socket: '' port: 3306 MySQL Community
Server (GPL)
100608 9:06:57 [Warning] Found invalid password for user: 'root@localhost'; Ign
oring user
只要出现上面信息,就说明 MySQL 已经起来了。
3. 不关闭此命令行窗口,重新打开一个命令行窗口,同样切到 “MySQL\bin” 目录下,然后执行下面的粗体的命令:
Microsoft Windows XP [版本 5.1.2600]
C:\>cd D:\Program Files\MySQL\MySQL Server 5.2\bin
C:\>d:
D:\Program Files\MySQL\MySQL Server 5.2\bin>mysql -u root mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.2.0-falcon-alpha-community MySQL Community Server (GPL)
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
然后,就是重新设置密码了!
mysql> UPDATE user SET Password=PASSWORD('root') where USER='root';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
mysql> quit
Bye
4. 好了到此步,可以关闭第一个 DOS 窗口了(关闭服务)。打开系统服务控制窗口(控制面板--管理工具--服务),启动 MySQL 服务。
5. 在剩下的第二个 DOS 窗口中,用新的 ROOT 密码连接 MySQL。
D:\Program Files\MySQL\MySQL Server 5.2\bin>mysql -u root -p
Enter password: ****
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.2.0-falcon-alpha-community-nt MySQL Community Server (GPL)
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> quit
Bye
至此,系统恢复 ROOT 用户管理权限完成,就是管理员密码的问题,奇怪,官方安装的时候不给出解决方法,貌似已存在很久了。。。

MySQLviewshavelimitations:1)Theydon'tsupportallSQLoperations,restrictingdatamanipulationthroughviewswithjoinsorsubqueries.2)Theycanimpactperformance,especiallywithcomplexqueriesorlargedatasets.3)Viewsdon'tstoredata,potentiallyleadingtooutdatedinforma

ProperusermanagementinMySQLiscrucialforenhancingsecurityandensuringefficientdatabaseoperation.1)UseCREATEUSERtoaddusers,specifyingconnectionsourcewith@'localhost'or@'%'.2)GrantspecificprivilegeswithGRANT,usingleastprivilegeprincipletominimizerisks.3)

MySQLdoesn'timposeahardlimitontriggers,butpracticalfactorsdeterminetheireffectiveuse:1)Serverconfigurationimpactstriggermanagement;2)Complextriggersincreasesystemload;3)Largertablesslowtriggerperformance;4)Highconcurrencycancausetriggercontention;5)M

Yes,it'ssafetostoreBLOBdatainMySQL,butconsiderthesefactors:1)StorageSpace:BLOBscanconsumesignificantspace,potentiallyincreasingcostsandslowingperformance.2)Performance:LargerrowsizesduetoBLOBsmayslowdownqueries.3)BackupandRecovery:Theseprocessescanbe

Adding MySQL users through the PHP web interface can use MySQLi extensions. The steps are as follows: 1. Connect to the MySQL database and use the MySQLi extension. 2. Create a user, use the CREATEUSER statement, and use the PASSWORD() function to encrypt the password. 3. Prevent SQL injection and use the mysqli_real_escape_string() function to process user input. 4. Assign permissions to new users and use the GRANT statement.

MySQL'sBLOBissuitableforstoringbinarydatawithinarelationaldatabase,whileNoSQLoptionslikeMongoDB,Redis,andCassandraofferflexible,scalablesolutionsforunstructureddata.BLOBissimplerbutcanslowdownperformancewithlargedata;NoSQLprovidesbetterscalabilityand

ToaddauserinMySQL,use:CREATEUSER'username'@'host'IDENTIFIEDBY'password';Here'showtodoitsecurely:1)Choosethehostcarefullytocontrolaccess.2)SetresourcelimitswithoptionslikeMAX_QUERIES_PER_HOUR.3)Usestrong,uniquepasswords.4)EnforceSSL/TLSconnectionswith

ToavoidcommonmistakeswithstringdatatypesinMySQL,understandstringtypenuances,choosetherighttype,andmanageencodingandcollationsettingseffectively.1)UseCHARforfixed-lengthstrings,VARCHARforvariable-length,andTEXT/BLOBforlargerdata.2)Setcorrectcharacters


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

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SublimeText3 Chinese version
Chinese version, very easy to use

WebStorm Mac version
Useful JavaScript development tools

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver Mac version
Visual web development tools
