[mythtv-users] How can I erase the schedule database?

[John and Holly Klug]

Looks like Myth .21 does occasionally hiccup with EIT information.  Once 
it goes wrong I get "DTV Program" forever on a channel.

I was able to correct it by putting back .20, then putting in .21, but 
after a week on .21 it started screwing it up again.

I don't see how to delete the schedule with mythfilldatabase, so I 
presume I have to dig into mysql to do it?