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edugallo
New Contributor

Calculate the difference of months between dates

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)
101/10/2017
104/19/2017
105/20/2017
202/10/2017
203/31/2017
209/17/2017


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


iDMax DateDifference Months
105/20/20176 Months
209/17/20173 Months


Thanks in advance for your attention and help.


Tks

1 Solution

Accepted Solutions
kaanerisen
Contributor III

Re: Calculate the difference of months between dates

Hi,

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

ss.png

6 Replies

Re: Calculate the difference of months between dates

Perhaps this?

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

Life is so rich, and we need to respect to the life !!!
luismadriz
Valued Contributor

Re: Calculate the difference of months between dates

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

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kaanerisen
Contributor III

Re: Calculate the difference of months between dates

Hi,

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

ss.png

edugallo
New Contributor

Re: Calculate the difference of months between dates

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

Re: Calculate the difference of months between dates

May be look for Fabs() in help.

Life is so rich, and we need to respect to the life !!!
edugallo
New Contributor

Re: Calculate the difference of months between dates

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

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