PBI perform inner or outer join

I read about autoexists. But In my model I do have fact and dim.

fact table contains
sales product_key  
20     1                         

30     2                         

40    3                          

in my product table I do have only A,B products.
Product_key   Product
  1                    A

  2                    B

then when I consider my sales from fact and product_ID from Product table then I am seeing as below
Sales Product

20      A

30      B

40  

here I am seeing blanks in Product. Which is not expected from my user. They are expecting only inner join. How to achieve this.

I don't want any inner join in my query editor.

 How to achieve this.