How-to: MySQL Password Reset (SQL Tutorial)
In case you need to perform a mysql password reset or the password of the mysql root user or if you find that your mysql password not working, reset your mysql password by creating a text file with an ALTER USER SQL query (see the mysql query #1), then start the MySQL server daemon with an init-file variable set to the text file (see the sql query #2.)
If that doesn’t work, specify my.ini as the defaults-file variable, leave the init-file variable set to the file, and launch the MySQL server daemon, then restart your MySQL server (see query #3.)
SQL queries can be found below:
1) ALTER USER ‘root’@’localhost’ IDENTIFIED BY ‘NewPassword’;
2) mysqld –init-file=D:\mysql-changepw.txt
3) mysqld –defaults-file=D:\wamp64\bin\mysql\mysql5.7.36\my.ini –init-file=D:\mysql-changepw.txt
A mysql password reset like shown in the video may be necessary if you’ve forgot your mysql password, if you’re locked out of your own mysql account or if you’re facing any other mysql password problem (of course, adjust the account name accordingly.)
Bear in mind that you will get an mysql password access denied error if you try to log in to your mysql server with the old password after the mysql server password has been changed.
We hope that this mysql tutorial has helped solve your mysql password problem.
Some of the most popular SQL interview questions and answers can be found below:
Q: MySQL password not working. What do I do?
A: Follow the SQL tutorial here: https://youtube.com/shorts/CBdyaqqEJqY
Q: MySQL MyISAM vs InnoDB. Which one to use?
A: Use InnoDB unless you intend to run COUNT(*) queries because MyISAM stores the row count inside of itself.
Q: What OS is the mysql my.ini file applicable to?
A: The file is applicable to a Windows OS.
Q: What’s the mysql my.cnf location?
A: The location of the file can vary, but some of the most common locations include:
* /etc/my.cnf (the most common location.)
* /etc/mysql/my.cnf
* /[datadirectory]/my.cnf
* ~/.my.cnf.
Q: What are some of the most popular SQL commands?
A: CRUD queries are the most popular SQL queries. They can be used to create (insert), read (select), update, or delete data.
Q: How dangerous is SQL injection? How to protect our web applications from this attack?
A: SQL injection is one of the most dangerous attacks targeting applications today. To protect our web applications from sql injection, we need to sanitize our inputs and never provide user input to a database.
Q: What file should be used for mysql server configuration?
A: my.cnf or my.ini.
Q: What are the most important settings we should optimize in MySQL?
A: Optimize these settings (these mysql server settings are specific to InnoDB or Percona XtraDB storage engines):
* innodb-data-file-path: this parameter defines the location of the InnoDB system tablespace (the file where all InnoDB data is stored.)
* innodb-buffer-pool-size: this parameter defines the size of the InnoDB buffer pool and it is the most important parameter in the entire MySQL server infrastructure related to its primary storage engine – InnoDB.
* innodb-log-file-size: this MySQL server InnoDB parameter defines the log file size. The larger it is, the better your mysql server performance will be, but the longer recovery time after a crash will be required too.
* innodb-log-buffer-size: this mysql server parameter is used to write to the log files on disk.
* innodb-flush-log-at-trx-commit: this MySQL install parameter controls the balance between strict database ACID compliance and high performance.
* innodb-flush-method: this MySQL install parameter defines the method that is used to flush data to InnoDB log files.
Q: What storage engine should we use in our MySQL install?
A: Use either InnoDB or Percona XtraDB. If there’s a necessity to run COUNT(*) queries, use MyISAM, because InnoDB and Percona XtraDB don’t store the row count internally while MyISAM does.
Q: What is the most frequently used type of SQL index?
A: A B-tree SQL index is used the most frequently in mysql server as well as other RDBMS systems.
Enjoy the video!
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