To ensure compatibility with your applications, you may need to change the SQL configuration.
The fastest way to edit my.cnf is via SSH. Log into your server as root, then use your favorite text editor to open the file.
# nano /etc/my.cnf
sql-mode = 'ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'
Save this file, then restart the SQL service.