Reset MySQL root password using ALTER USER statement after install on Mac

If this is NOT your first time setting up the password, try this method:

mysql> UPDATE mysql.user SET Password=PASSWORD('your_new_password')
           WHERE User='root';

And if you get the following error, there is a high chance that you have never set your password before:

ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

To set up your password for the first time:

mysql> SET PASSWORD = PASSWORD('your_new_password');
Query OK, 0 rows affected, 1 warning (0.01 sec)

Reference: https://dev.mysql.com/doc/refman/5.6/en/alter-user.html

If you started mysql using mysql -u root -p

Try ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';

Source: http://dev.mysql.com/doc/refman/5.7/en/resetting-permissions.html

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