I have the following measure:Measure = DISTINCT(TABLE_A[item]) - DISTINCT(TABLE_B[item]) It is right, no error message appears, Although, when I try to put this measure on any type o visual I get the following error:Error Message:MdxScript(Model) (5, 32) I known that is not possible to see a table, but how can I visualize this data, just for debbung purposes? Because I don't know what is the result of a DISTINCT function minus another DISTINCT function, so I want to see it.

You can use DAX Studio to see what tables are returned by various functions. Nest them inside an EVALUATE() statement.

How to visualize Dax frames on Power BI? | Microsoft Fabric Community