How to run a MySQL command from the command line
How to run a MySQL query using the command line: Use -e to execute the command. Here is what that will look like: mysql -u
Databases
Can’t login as root to PHPMyAdmin on new server install
Background After installing a new server, or doing a server migration, you find you can’t suddenly can’t log into PHPMyAdmin as root anymore. The errors
MySQL Errcode: 122 restoring database on Virtualmin server after fresh install
Background You might experience the following MySQL error whilst trying to restore a Virtualmin database: #3 – Error writing file './DB_NAME/TABLE_NAME.frm' (Errcode: 122) Solution Check
How to install Microsoft’s SQL PHP PDO and so on drivers for Linux NGINX – Tested
Background Microsoft has made massive strides in supporting PHP on Linux in the last few years. A common need in a PHP application might be
How to truncate a MySQL table in spite of a foreign key
This can be done by disabling index checks. Yes you can: SET FOREIGN_KEY_CHECKS = 0; TRUNCATE table1; TRUNCATE table2; SET FOREIGN_KEY_CHECKS = 1; With these
How to display the size of all MySQL tables using the command line
Background Issue the following command if you want to see in Megabytes the size of all MySQL tables from the command line: SELECT table_name AS
How to drop all MySQL tables from a MySQL database
Background Under certain circumstances you might want to trash all the databases you have on a server. This article explains how to do it. Please
MySQL Check All Databases
Background Having a broken MySQL / MariaDB database is no fun. Broken tables can also lead to half complete backups really compounding the situation and
How to allocate more RAM to MariaDB/MySQL on a shared server and increase the connection count
Background If you have a server with sufficient RAM but you are running out of MySQL connections, you might want to look at two easy
PHPMyAdmin error requested authentication method unknown to the client [caching_sha2_password]
Whilst trying to install or use PHPMyAdmin, you might encounter the following errors: mysqli_real_connect(): The server requested authentication method unknown to the client [caching_sha2_password] mysqli_real_connect():