So a very quick and easy use-case to give some context:

Let's say you have a team of Sales Reps.

Whenever they speak to another company on your business' behalf, they are supposed to log it in a module called "Client Meetings" and track stuff like "No. of Employees", "Age", "Net Revenue", etc of that company. For convenience, this is not a mandatory field because the info is not always available. 

Now let's say you're interested in gauging your sales reps by how frequently they leave each field blank. E.g. Employee A leaves field "Age" blank a lot, and you want to view this relative against the no. of non-blank fields. 

I'm curious about how to do something like this using Zoho Analytics, because there doesn't seem be any straightforward way. You can easily visualize the no. of nulls, vs no. of 1 year old companies, no. of 2 year olds, etc - but if you just want to compare no. of blank vs non-blanks, it  doesn't seem to be possible to. I'd appreciate any prod in the right direction!