Calculate the difference of months between dates

[Anonymous]

Hello! I am a beginner in Qlik Sense and would like to calculate the difference between dates as follows:

Pick the highest date recorded for the ID;

Calculate the difference of months with the current date.

ID	DATE (MM/DD/YYYY)
1	01/10/2017
1	04/19/2017
1	05/20/2017
2	02/10/2017
2	03/31/2017
2	09/17/2017

Assuming the current date is 12/4/2017 the expected result would be:

iD	Max Date	Difference Months
1	05/20/2017	6 Months
2	09/17/2017	3 Months

Thanks in advance for your attention and help.

Tks

[Anil_Babu_Samineni]

Perhaps this?

Dual((Num(Month(Today())) - Num(Month(Max(DATE)))) & '  Months', Num(Month(Today())) - Num(Month(Max(DATE))))

[luismadriz]

HI,

I case you need this in the front end you could do this:

Dimension:

=AGGR(Max(ID),ID)

Measure1:

=Date(Max(TDATE))

Measure2:

=Round((Today()-Date(Max(TDATE)))/30,0.1) &' Months'

You'll need to clarify the algorithm to calculate months.

I hope this helps,

Cheers,

Luis

PS. When applicable please mark the appropriate replies as Correct. This will help community members know which discussions have already been addressed and have a possible known solution. Please mark replies as Helpful if the provided solution is helpful to the problem, but does not necessarily solve the indicated problem. You can mark multiple threads as Helpful if you feel additional info is useful to others

[kaanerisen · Accepted solution]

Hi,

Exp: =aggr(num((max(Date)-min(Date))/30,'#.##0 Months'),ID)

[Anonymous]

Excellent tip! Thank you very much.

If the month difference appears as negative, how do I always leave positive?

In some results the information appeared like this:

- 1 Months

[Anil_Babu_Samineni]

May be look for Fabs() in help.

[Anonymous]

Thank you! This suggestion met my need. I'll test the others for knowledge. Thank you all.