You are correct that you can not select nulls using set analysis, well, at least not directly. ={“*”} will give you all non-null values. You can therefore use -={“*”} to pick up all null values.
Hope that helps.

how to handle nulls using set analysis? possiable are not

Excellent post. I almost always use *= now and have done for some time. Especially since moving to SENSE. I have also stopped ‘helping’ users so much with SENSE. My view is it is easier to make selections in SENSE. And then to see the selections made on the brilliant black bar (or remove them). So I try not to build in limits using set analysis unless there is no other option.

For example I try to avoid a YTD set analysis. Users can easily select the months as required. It’s a you’re in control so make sure you make the right selections (self service) approach. As opposed to helping them using set analysis and triggers (guided analytics)

Thanks Donnie. There is much that can, and has, been written about set analysis, which is why I wasn’t going to replicate it all. These are very good tips to have in the comments. Thanks!

Not sure of any times where you’d want to do those, but they are possible.

Thanks Aaron. I picked up a few tips from your Sense Master Items post today also – so we are quits!