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pbix
Helper III
Helper III

DAX SQL window function equivalent

Hello,

 

I would like to create a calculated column that returns a total row count per customer, as below.

 

http://imgur.com/WJ2MzJS

 

To do this with SQL, one approach would be to use a window function like:

 

COUNT(*) OVER (PARTITION BY CUSTOMER ORDER BY NULL)

 

Could someone please demonstrate how to achieve the same result using DAX?

 

Thanks!

 

Pbix

1 ACCEPTED SOLUTION
Eric_Zhang
Microsoft Employee
Microsoft Employee

@pbix

Check

 

Column =
COUNTAX (
    FILTER ( 'Table', EARLIER ( 'Table'[Customer No.] ) = 'Table'[Customer No.] ),
    'Table'[Product Purchased]
)

 Capture.PNG

 

A good site for your reference.

View solution in original post

3 REPLIES 3
Eric_Zhang
Microsoft Employee
Microsoft Employee

@pbix

Check

 

Column =
COUNTAX (
    FILTER ( 'Table', EARLIER ( 'Table'[Customer No.] ) = 'Table'[Customer No.] ),
    'Table'[Product Purchased]
)

 Capture.PNG

 

A good site for your reference.

What if we have unsorted list of Customer No.? They this formula shouldn't work, yes?

Lovely, thanks very much.

 

 

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