How to exclude values only when a specific condition is true?

[#1]

Hello and thank you for taking your time to help me with my question, the thing is that I have the following scenario, let me show you the table example first:

Product	Year	month	bt
Frooty loops	0	0	1
Oranges	2013	7	0
Oranges	0	0	1
Pinapples	2013	7	0
Apples	2013	7	0
Apples	0	0	1

The first question is should I do something like this?

sum({<Month={$(SelectedMonth)},bt = 0> }Product} I wanna do something like this so that I show the selected month-year and the ones that don't have a month or year which are the ones where "bt" = 1

That's just part of the problem, the second problem is how do I tell qlik view that if a product is repating like oranges for examples, only show me the one where year and month is different than 0 (note: this is just in case the product is repeating otherwise I would show it), I hope someone can understand and help me with this,, if you have any questions just tell me thanks in advance

[tresesco]

To answer your first question, SelectedMonth is not required to be included in the set, because qv calculates on selected data unless told(in set analysis) otherwise, therefore i guess sum({<bt ={0}> }Product) should work.

For second problem, use count() function to check if it is repeating, like If(Count(Product)>1,...,...). This logic you can try to implement in set as well.