SQL join in Power Bi with DAX

Sorry, but that's not what I meant. I try to describe it in a other way.

I want to realise a SQL join of two tables with DAX.

I have two tables, tabel A and B. Both have the same columns-structure.

Some of the rows of table B can be found in table A. 

I want to get a new table that has all the rows of table A minus the rows that can be found in table B.

Like in the picture of the first post to see, i only want the red part in my new table.