Show null values in query

J

John

I have several tables that link together to calulate the number of products
we find when we do customer audits. I had created a query that show how many
products we find for each customer but I want the query to show customers
where we have found no product. For some reason the query shows only the
fields that were we have found product and not the ones that contain null
values.

How do I make all customers show, even if the product found coulumb is null?
 
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