topic Re: Problem calculating net change month to month in QlikView

Problem calculating net change month to month

qw_johan — Fri, 15 Sep 2017 09:17:32 GMT

Having problem with my expression trying to calculate net change month to mounth. I am getting null value on first and second row, first row I can understand but why the second row?

Total amout = Just calculates the number of ID's for a certain period/month.

count({<Period={">=$(=$(vYearMonth))"}>}DISTINCT ID)

Net change = the difference month to month, i.e. april= april - march, 19752-19820= -68

count({<Period={">=$(=$(vYearMonth))"}>}DISTINCT ID) - above(count({<Period={">=$(=$(vYearMonth))"}>}DISTINCT ID))

I am stuck and can't figure this out.

Any help appreciated

Thanks

Re: Problem calculating net change month to month

techvarun — Fri, 15 Sep 2017 09:30:01 GMT

Hi,

The Problem seems to be in Variable Declaration 1701 is not taking the Above Value as 1612, where as 1702 for feb is taking 1701 as Above Properly.

Can you Check. Or share a sample app

Re: Problem calculating net change month to month

Kushal_Chawda — Fri, 15 Sep 2017 09:35:07 GMT

would you be able to share the sample?

Re: Problem calculating net change month to month

qw_johan — Fri, 15 Sep 2017 11:05:04 GMT

Thanks for your fast respons.

I have created a sample app that illustrates the problem: Test.qvw

Re: Problem calculating net change month to month

Kushal_Chawda — Fri, 15 Sep 2017 11:37:37 GMT

try this

num(count({<Period={">=$(=$(vYearMonth))"}>}DISTINCT ID) - above(total count({<Period={">=$(=$(vYearMonth))"}>}DISTINCT ID)),'# ##0','.',' ')

Re: Problem calculating net change month to month

qw_johan — Fri, 15 Sep 2017 11:41:53 GMT

Fantastic !!!

Using "total" solved the problem.

Thank you