Hi there,
You could also use a plugin like Health Check to do this testing.
We also just released new versions of The Events Calendar (4.6.20.1) and Events Calendar Pro (4.4.29.2), so I would also recommend updating to the current versions to see if you’re still running into this there. If you don’t see a prompt to update in the Plugins section of your Dashboard, you can do so manually by following these instructions.
Providing SQL queries is not something we are typically able to do here in the forums, but please let me know what you find with the steps above…if needed, I can add this thread to a queue for one of our developers to circle back on and try to help you out with deleting it in the database.
Thanks,
Brendan