Returning the THIRD date - TOPN with equal values

[luanamoreschi]

Dear All,
I need to pull specifically the date of the third order of each customer due to a promotion. 

I'm using the solution provided by another user (https://community.powerbi.com/t5/DAX-Commands-and-Tips/Returning-the-THIRD-date/m-p/2741551#M84284). The problem is that the formula ignores sales with same dates.

last date of Top three ascending: = 
IF (
    HASONEVALUE ( Customer[Customer] ),
    MAXX ( TOPN ( 3, Data, Data[Order_Date], ASC ), Data[Order_Date] )
)

As you can see below:

 

Thank you!

[Jihwan_Kim · Accepted solution]

Hi,

I am not sure how your datamodel looks like, but please check the below picture and the attached pbix file.

Last date of top three asc: =
VAR _relatedtable =
    RELATEDTABLE ( Data )
RETURN
    IF (
        HASONEVALUE ( Customer[Customer] ),
        MAXX (
            FILTER (
                ADDCOLUMNS (
                    _relatedtable,
                    "@rank", RANKX ( _relatedtable, Data[Order_Date],, ASC )
                ),
                [@rank] <= 3
            ),
            Data[Order_Date]
        )
    )