Is there a way to create a calculated member by counting the number of
records in a fact table where field1 = 0 and field2 = 0 and field3 = 0
and Field4 = 0? These are simple indicator fields whose value is
either 1 for true or 0 for false.

I'm really hoping to avoid modifying the existing fact table and thus
reworking the ETL process. Thanks.