Total counting values that refer to other values

[userpien]

Hello,
I want a table where the total count of items is displayed next to their related promotion codes. What DAX measure should I write down?
Thank you

[userpien]

it doesn't work if i do this:

 why? thanks

[lbendlin · Accepted solution]

You don't need any DAX for this.  use the implicit "Count"  measure.

Create a table visual. Add the Prom and Items columns. Change the Items column to "Count" aggregation.