RANKX Is ranking on my total which is weird

[keithchai]

So I has got a Fact table and had a measure to calculate the monthly sales ratio by a category group. 

Next I wanted to know the rank from highest to lowest ratio for the particular category but below is the ranking that I got from this DAX formula : 

Rank = RANKX( ALLEXCEPT( FactInvoice , NHFCalendar[Month] ) , CALCULATE( [InvoiceAmt Sum Perc] , ALLEXCEPT( FactInvoice , FactInvoice[Related ItemGroupID], NHFCalendar[Month])), , DESC, Dense)

Problem I face is why is the ranking is 1 for the total and not on "External category" instead? And the reason the rank 2 gets duplicated ? I am really lost any guidance would highly appreciated. 😞

Related ItemGroupID	InvoiceAmt Sum Perc	Ratio Itemgroup Sales Rank	Measure	Month
EXTERNAL	57	2		Jan
FOC		4		Jan
METAL	15	3		Jan
PLASTIC	28	2		Jan

[v-cazheng-msft · Accepted solution]

Hi @keithchai 

You can create a Measure to get the result you want.

Rank =

VAR res =

    RANKX (

        ALLEXCEPT ( FactInvoice, FactInvoice[Month] ),

        CALCULATE (

            [InvoiceAmt Sum Perc],

            ALLEXCEPT ( FactInvoice, FactInvoice[Related ItemGroupID], FactInvoice[Month] )

        ),

        ,

        DESC,

        DENSE

    )

RETURN

    IF ( HASONEFILTER ( FactInvoice[Related ItemGroupID] ), res, BLANK () )

The result looks like this:

Best Regards

Caiyun Zheng

Is that the answer you're looking for? If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[amitchandak]

@keithchai , what is your base data, what was shown in the last table ?

Try like

Rank = RANKX( ALLselected(FactInvoice ) , CALCULATE( [InvoiceAmt Sum Perc] , ALLEXCEPT( FactInvoice , FactInvoice[Related ItemGroupID], NHFCalendar[Month])), , DESC, Dense)

Can you share sample data and sample output in table format? Or a sample pbix after removing sensitive data.

[keithchai]

Hi @amitchandak ,

I tried changed to ALLSELECTED the result is not desired. 

The rank now is ranking on the entire year, I only wanted to know the rank for the categories within the month. 

ALLSELECTED Result:

My desired output:

My base data is just a simple fact invoice table, with the sales amount for the invoices throughout the year. 

InvoiceAmt Sum Perc is the percentage of invoiceamt sum for the month. Say January is 57% of the total sales and 58% for March total sales etc. If possible I may not want to share the pbix file, my company is a little strict. 😫