Thanks for the workbook. The kind of viz I am looking is to show blank when category id are matching i.e. I will see blank sheet with only the label "category id " in row and to show the non-matching id's automatically depending on the dates that I select.
So basically I am doing data mining or data check on a regular basis. I am comparing today's data vs yesterday's data and if no change then I don't want to see anything or you can say a blank sheet . BUt if there is any difference I would only like to see those different values.
I have tried a lot using numerous calculated fields , counting difference and then filtering out but nothing seems to work. I guess it's hard to automatically show/hide the data depending upon dates.
Does this help you in understanding what I am trying to achieve. I will try using your approach to see if it works.