yeah, you are right. thats how I would do it in sql too.
but I am not able to do in a graphical calculation view. so looking for ideas. I am multiple instances of this scenario so would do like to stick to a graphical Calc View rather than Script based view.
SQL for what i am trying to do would be something like this
SELECT * FROM TABLE VBAK A LEFT JOIN VBAK_SUBSET B ON A.KEY = B.KEY WHERE B.KEY IS NULL
Given my primary key can be multiple fields. I just need to figure out how to implement this WHERE clause in a Calc view - I think I will be set.