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Uninstalling MySQL in Ubuntu is a task that may seem daunting to new users. However, with a working knowledge of SQL, it becomes a relatively simple process. It is crucial to uninstall MySQL properly because failing to do so can leave behind residual database files that can lead to issues in future installations. This article will walk you through the complete process of uninstalling MySQL in Ubuntu, explaining step-by-step the SQL code involved to avoid any data remnants.

The initial step towards uninstalling MySQL in Ubuntu involves issuing a command to stop any running instances of MySQL service.
This can be done by running the following command:

sudo systemctl stop mysql

Stopping any running instances of MySQL service is essential to prevent interruptions during the uninstallation process. This command uses the ‘systemctl’ command, a utility in Ubuntu that is used for examining and controlling the systemd system and service manager.

Uninstall MySQL

To fully uninstall MySQL from Ubuntu, we have to remove several different packages associated with MySQL. We can achieve this by using the following command:

sudo apt-get remove --purge mysql-server mysql-client mysql-common

With the ‘apt-get remove’ command, we are instructing the server to not only remove the MySQL software but also to thoroughly purge all configuration and database files associated with it. The ‘–purge’ option is used to remove not just the MySQL packages but also the configuration files.

Clean Up the System

After uninstalling MySQL, it is important to clean up your system and remove any remaining packages that were automatically installed and are no longer needed. This is performed using the following command:

sudo apt-get autoremove

The ‘autoremove’ command removes libraries and packages that were installed as dependencies but no longer needed.

Check MySQL Status

To ensure you have successfully uninstalled MySQL, you should check MySQL’s status using the following command:

systemctl status mysql

If everything has been done correctly, this should return a message indicating that mysql.service could not be found, confirming the success of your MySQL uninstallation.

This tutorial is a clear testament to the fact that with a basic understanding of SQL commands, managing and controlling databases can be a breeze. Even when the operations seem complex like the complete uninstallation of MySQL, applying the right commands and following the directed steps can simplify the procedure. The commands highlighted not only offer an effective solution but also ensure system health and accuracy of applied changes.

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