How to make exclusion table in Power BI - powerbi

Question

I am looking for a solution of this probably simple problem. I have two tables in Power BI: Inventory and Sales:
Inventory Sales
Item Title Item Quantity
123 Soap 124 5
124 Detergent 123 8
125 Toothpaste
126 Tooth brush
How can I make a table that lists items not sold. I.e. I need to return:
Item Title
125 Toothpaste
126 Tooth brush

Answer 1

I would add a Measure to the Inventory table, e.g.
Item Quantity = 0 + SUM ( Sales[Quantity] )
Then I would add that Measure to the Visual level filters for your table visual, and set the filter to:
Show items when the value:
is
0

Answer 2

You could create a calculated column:
=IF(LOOKUPVALUE(Sales[item];Sales[item];Inventory[item]);BLANK();1)
and then filter for this column = 1
Or you could do this:
=IF(LOOKUPVALUE(Sales[item];Sales[item];Inventory[item]);BLANK();[title])
If you use this columns on your axis in a visual/table, only items not sold will show up.
Or you could use create a measure like this, assuming there is a relationship between the two tables on Item:
Products not being sold :=
IF (
ISBLANK (
CALCULATE (
DISTINCTCOUNT ( Inventory[item] );
FILTER ( Sales; Sales[item] = [item] )
)
);
1;
BLANK ()
)
if you add this measure to your visual/table only items not sold will show up