Hi,
I have a subject area with a single fact based on 'People' and 'Interview People' (count distinct and count respectfully on different keys, call them Person Key and Interview Person Key)
This fact joins to; location, time, classification etc etc dimensions.
What I want is a Measure that shows a count of 1 for people who have been interviewed previously, outside of the current period (or any other dimension, i.e. I don't care if it is a different location, classification etc etc, just that that person has another record with the same person key against any other 'tuple' of data
i.e. If I filter to this month (say) I want to see 1 for each person interviewed in that month who has been interviewed previously, either in that time period or outside it.
Is there any non-resource intensive way to achieve this?
thanks,
Robert.