How do I uninstall MySQL on Mac OS X (Snow Leopard)?

If you haven't yet rebooted your computer, the process could still be running. First, reboot.

Then if MySQL is still showing up after a reboot, from the Terminal, issue the following commands one at a time¹:

• sudo rm /usr/local/mysql
• sudo rm -rf /usr/local/mysql*
• sudo rm -rf /Library/StartupItems/MySQLCOM
• sudo rm -rf /Library/PreferencePanes/My*
• rm -rf ~/Library/PreferencePanes/My*
• sudo rm -rf /Library/Receipts/mysql*
• sudo rm -rf /Library/Receipts/MySQL*

And using your text editor of choice:

• Edit /etc/hostconfig and remove the line MYSQLCOM=-YES-

If you still cannot install or run a different version of MySQL, you might have to issue one last command in the Terminal²:

• sudo rm -rf /var/db/receipts/com.mysql.mysql*

Another option is to do the following

Run this

launchctl list|grep mysql

Make note of the name of the mysql process name

launchctl unload mysql-process-name-from-other-command.plist

This will stop the process without need to uninstall or restarting.

You will need to kill the mysqld proccess in the Activity Monitor.

Then you will need to delete the following:

/usr/local/mysql
/usr/local/mysql-5.1.45-osx10.5-x86_64/
/Library/StartupItems/MySQLCOM/
/Library/PreferencePanes/MySQL.prefPane/
/Library/Receipts/mysql-5.1.45-osx10.5-x86_64.pkg/
/Library/Receipts/MySQLStartupItem.pkg/

Some of the folders with version numbers in them may be names different then what I have listed.

Also this Stackoverflow question may help: How do you uninstall MySQL from Mac OS X?