Dax Measure at least one product

Hi mosman ,

I created a sample pbix file(see attachment) for you, please check whether that is what you want.

1. Create a product name dimension table(DO NOT create any relationship with your fact table)

Products = VALUES('Table'[ProductName])

2. Create a measure as below to determine if the corresponding customer should be displayed

Flag = 
VAR _selproduct =
    ALLSELECTED ( 'Products'[ProductName] )
VAR _selcustomer =
    SELECTEDVALUE ( 'Table'[Customer Name] )
VAR _tab =
    CALCULATETABLE (
        VALUES ( 'Table'[Customer Name] ),
        FILTER ( ALLSELECTED ( 'Table' ), 'Table'[ProductName] IN _selproduct )
    )
RETURN
    IF ( _selcustomer IN _tab, 1, 0 )

3. Create a table visual and apply a filter on this visual with the condition(Flag is 1) just as below screenshot

Best Regards