Actual Attendance at performance in a List

Has anyone build a T_Keyword entry, for a list criteria for actual attendance to a specific Performance. 

Did you do it with existing list criteria or did you create a custom view?  If you have solved this one would you be willing to share a bit of SQL or a T-Keyword row that you use to set this up that would be very helpful.

How do you deal with the situation where a person buys 8 tickets and 4 had attended and 4 did not?

 

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