topic How does show/hide really work? in QlikView

How does show/hide really work?

helen_pip — Thu, 16 Jun 2016 10:28:45 GMT

Hello

I was wondering if someone could kindly explain to me how show/hide works?

I.e. I have many variables which are set to 0 , which then changes to 1, if you click on the button

However I just take it for granted that the variable will work (which it does) but how do you explain to others what the variable is actually doing?

Any help would be greatly appreciated

Kind Regards

Helen

Re: How does show/hide really work?

swuehl — Thu, 16 Jun 2016 10:53:22 GMT

Maybe have a look at

The Calculation Engine

It explains how making a selection triggers the calculation engine, which re-evaluates all aggregations in every place (also in show / hide conditional expressions).

I believe similar is happening when you change a variable that is used in these expressions, a variable change triggers re-evaluation of all expressions where this variable is used.