Mapping between 2 table with Many to many relationship in POWERBI

[ngocnguyen]

hI

I have 2 table 1 and 2 as belows. They are connecting with each other by many-to-many relationship

So, I wanna create a Output table with logic:

Mapping table 1 and 2 , in which the 1st posting date will be the 1st Running date.

Is there any way to do it with Dax measure?

[Ashish_Mathur]

Hi,

Write this calculated column formula in Table 2

Post date = calculate(min('Table 1'[Post date]),filter('Table 1','Table 1'[Dealer]=earlier('Table 2'[Dealer])&&'Table 1'[Post date]>earlier('Table 2'[Run date])))

Hope this helps.

[Anonymous · Accepted solution]

Hi @ngocnguyen ,

I created a sample pbix file(see the attachment), please check if that is what you want. You can create two measures as below to get it:

NRun date = 
VAR _dealer =
    SELECTEDVALUE ( 'Table 1'[Dealer] )
VAR _postdate =
    SELECTEDVALUE ( 'Table 1'[Post date] )
VAR _prepdate =
    CALCULATE (
        MAX ( 'Table 1'[Post date] ),
        FILTER ( ALLSELECTED ( 'Table 1' ), 'Table 1'[Dealer]=_dealer&&'Table 1'[Post date] <_postdate )
    )
RETURN
    CALCULATE (
        MIN ( 'Table 2'[Run date] ),
        FILTER (
            'Table 2',
            'Table 2'[Run date] < _postdate
                && 'Table 2'[Run date] > _prepdate
        )
    )

NAmount = 
CALCULATE (
    SUM ( 'Table 2'[Amount] ),
    FILTER ( 'Table 2', 'Table 2'[Run date] = [NRun date] )
)

Best Regards