Date Difference with blank values

[Bimster]

Hi,

I'm trying to calculate the number of days between two dates and for one of these columns, there may be blanks which I want to ignore (rather than give a large -ve value).

What DAX do I need to take this into account?  I want the table to still show the entries with the blank fields, just not to add a date in the date difference calculated column (Days to close column in picture below) - thanks

[Anonymous]

Dear @Bimster,

You need to combine your DateDiff DAX with IF.

Ex:    New Day to close =   CALCULATE( IF ( CLoseDate <> blank(),   [your DateDif Formular] , ""))

Regards,

ManNVSM.

[Bimster]

Hi ManNVSM,

I just tried this and am getting the above error:. Any idea on how to resolve this. The underlying data is being pulled through from a SharePoint list.

[Anonymous]

Dear @Bimster

Try this again with ALLEXCEPT.

Ex: New day to close = CALCULATE(IF('Breach Register'[Breach closed date] <> BLANK(),DATEDIFF('Breach Register'[Date that breach discovered],   'Breach Register'[Breach closed date], day)  
, ALLEXCEPT ('Breach Register'[Title]))

Regards,

ManNVSM.

[Bimster]

Thanks for the help. I've tried this with the allexcept addition and the same error message is appearing.

It seems to be very complicated to do a date difference whilst ignoring blanks.

[Anonymous]

Dear @Bimster,

Can you share your pbix (delete the sensitive data or create dummy data) please?

Regards,

ManNVSM.

[Bimster · Accepted solution]

Hi ManNVSM,

Thanks for your help. You gave me the idea of using dummy data so I did this and came up with this formula:

Days to close = if('Breach Register'[Breach closed date]=BLANK(),'Breach Register'[Breach closed date],1.0*'Breach Register'[Breach closed date]-'Breach Register'[Date that breach discovered])

This seems to work ok.

Thanks for your help again.

[tusharkhodankar]

Hello, Will this work in Direct Query?

[Anonymous]

Dear @Bimster,

It's nice to help you. So choose a reply that you think it 's a solution, it'll help the other user 🙂

Regards,

ManNVSM.

[amylehman]

I am experiencing this same issue, but this does not work for me. It removes the columns from the variance when the date is missing. 

Date Variance = IF('Project'[ProjectBaseline1FinishDate]=BLANK(),'Project'[ProjectBaseline1FinishDate],1.0*'Project'[ProjectBaseline1FinishDate] -('Project'[ProjectBaseline0FinishDate]))

[jthomson]

Could do something like:

Days To Close = if(isblank([breach closed date]),blank(),[current measure you're using that's giving -43k something])

[Bimster]

The Days to close column is the one I have added as a calculated column to try and calculate the 'days to close' each breach. This used the following:

Days to close = 1.0*('Breach Register'[Date that breach discovered]-'Breach Register'[Breach closed date])

So I don't think your suggestion will work.

I did try datediff but it errored stating one date can;t be before another. This occurred whether it was x-y or y-x.

I am trying to add a column in the visual to show that where a breach has been closed (breach closed date), the time it took to close. If if hasn't been closed i.e. Breach closed date is blank, then the entry in the new column will also be blank.

Thanks.