XAMPP
最近有客户忘记了mysql的root用户密码,使用mysqld_safe无法正常启动mysql,也没有办法按照mysql manual中的方法修改root密码。
网页教学网站长注:今天有学生忘记了当时默认安装的时候密码了,三个学生很可爱,研究将近1小时也没发现密码,问我来了,我也找半天没找到,最后试了试,原来XAMPP环境下默认安装的MYSQL密码是空的!根本就没设置密码!
客户安装的php环境是xampp1.6.7,重新安装xampp可以解决这个问题,但是需要重新安装易客CRM和恢复CRM数据,这个方法有点问题。
恢复mysql的权限数据库倒是一个方法,解压缩xampp的安装文件,把var目录下的mysql数据库上传到客户的服务器上,root用户的密 码变为空,这样可以登录mysql控制台,但是修改root的密码一直提示"user table is read only",无法修改root用户的密码。
google了一下"user table is read only",找到一个方法,mysqladmin -u root flush-tables 执行这个命令后,就可以修改root用户的密码,另外还需要设置var目录中的mysql数据库文件夹的权限为可写。
如果添加了其它mysql用户,需要重新添加新的用户以及相应的权限。

Mastering the method of adding MySQL users is crucial for database administrators and developers because it ensures the security and access control of the database. 1) Create a new user using the CREATEUSER command, 2) Assign permissions through the GRANT command, 3) Use FLUSHPRIVILEGES to ensure permissions take effect, 4) Regularly audit and clean user accounts to maintain performance and security.

ChooseCHARforfixed-lengthdata,VARCHARforvariable-lengthdata,andTEXTforlargetextfields.1)CHARisefficientforconsistent-lengthdatalikecodes.2)VARCHARsuitsvariable-lengthdatalikenames,balancingflexibilityandperformance.3)TEXTisidealforlargetextslikeartic

Best practices for handling string data types and indexes in MySQL include: 1) Selecting the appropriate string type, such as CHAR for fixed length, VARCHAR for variable length, and TEXT for large text; 2) Be cautious in indexing, avoid over-indexing, and create indexes for common queries; 3) Use prefix indexes and full-text indexes to optimize long string searches; 4) Regularly monitor and optimize indexes to keep indexes small and efficient. Through these methods, we can balance read and write performance and improve database efficiency.

ToaddauserremotelytoMySQL,followthesesteps:1)ConnecttoMySQLasroot,2)Createanewuserwithremoteaccess,3)Grantnecessaryprivileges,and4)Flushprivileges.BecautiousofsecurityrisksbylimitingprivilegesandaccesstospecificIPs,ensuringstrongpasswords,andmonitori

TostorestringsefficientlyinMySQL,choosetherightdatatypebasedonyourneeds:1)UseCHARforfixed-lengthstringslikecountrycodes.2)UseVARCHARforvariable-lengthstringslikenames.3)UseTEXTforlong-formtextcontent.4)UseBLOBforbinarydatalikeimages.Considerstorageov

When selecting MySQL's BLOB and TEXT data types, BLOB is suitable for storing binary data, and TEXT is suitable for storing text data. 1) BLOB is suitable for binary data such as pictures and audio, 2) TEXT is suitable for text data such as articles and comments. When choosing, data properties and performance optimization must be considered.

No,youshouldnotusetherootuserinMySQLforyourproduct.Instead,createspecificuserswithlimitedprivilegestoenhancesecurityandperformance:1)Createanewuserwithastrongpassword,2)Grantonlynecessarypermissionstothisuser,3)Regularlyreviewandupdateuserpermissions

MySQLstringdatatypesshouldbechosenbasedondatacharacteristicsandusecases:1)UseCHARforfixed-lengthstringslikecountrycodes.2)UseVARCHARforvariable-lengthstringslikenames.3)UseBINARYorVARBINARYforbinarydatalikecryptographickeys.4)UseBLOBorTEXTforlargeuns


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