Subtract dates in the same column and return zero in case of the identical date values

[aymantm]

Hello all,

I was looking for a way to create a calculated column that auto calculate the duration between dates in a date column called orderdate, with a filter of another column let's call it Product.

I composed the following expression:

ByAymanProductFlowDays =

var currentproduct=Sales[ProductName]

var previousdate=MAXX(FILTER(Sales,Sales[ProductName]=currentproduct&&Sales[OrderDate]<EARLIER(Sales[OrderDate])),Sales[OrderDate])

var result=IF(ISBLANK(previousdate),0,Sales[OrderDate]-previousdate)

return result

When using this expression on adventureworks data I got the results as shown in the following image

In the small red circle there are two consecutive values of 1. My goal is to subtract the dates in the red column

so because the relevant dates are identical the yellow highlited value should be zero.

How to fix the DAX expression or rewrite it to meet my goals?

Than you all

Ayman

[mahoneypat]

Your previousdate variable has only a < EARLIER.  Change that to <=.

If this works for you, please mark it as the solution.  Kudos are appreciated too.  Please let me know if not.

Regards,

Pat

[aymantm]

@mahoneypatI tried this before. it returns all the column into zeros.

[lbendlin]

Do you have an index column?  How do you sort the rows?

[aymantm]

I sorted the table manually.

No index column. I prefer if the solution is not based on extra columns