I have a fairly large number of TV shows that for some reason have not been found in any of the online databases so they are missing at least some of the data needed to properly categorize them and get them to show up properly in the playlists. Considering the number of items involved I'd prefer not having to hunt them down manually. It occurred to me I could perhaps use a playlist to assist with this so I tried creating one that would contain only items where the track/episode was missing. Unfortunately, there seems to be no way to specify this as the playlist definition requires a numeric entry when using track/episode.

If there's already a way to easily identify the files that haven't been properly categorized I'd appreciate a pointer to it. Otherwise, is there any way to create a playlist that will contain entries with missing data?