Hi Jim,
Thanks for reaching out! Unfortunately, our calendar plugins aren’t able to pull event data from external sources such as MySQL databases at this time. However, our Event Aggregator add-on does include support for importing event data from a variety of formats, including CSV, iCalendar/ICS, Google Calendar, Facebook, and more. If you’re able to output your MySQL data to a supported format, this add-on might be an option worth considering! You can learn more about Event Aggregator on its product page here:
https://theeventscalendar.com/product/event-aggregator/
I hope that helps to get you started here! 🙂 Thanks again, and let us know if you should have any other questions!