When I create a pivot table and ask that it count the number of records I want to know which rows don't have any associated records. For example, I created a pivot table with product and release, I then wanted to count the number of features associated with that release. In this case, I also wanted to see which releases didn't have any features associated with it. I can also see times when I would only want to see rows that have >0 items. Maybe a check box on the field selection or the table settings that says "Show rows with no associations" or something to that effect.
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