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Alternative to countuniqueif in dax?

My issue you is I have a data table with information saying did a customer buy a product in their first appointment yes it no, the issue is if they buy multiple products it's on multiple lines. I was able to do count unique and base it around customer Id but I can't seem to get round it. 


(First week of BI)

Super User
Super User

@ShayCowin Sorry, having trouble following, can you post sample data as text and expected output?
Not really enough information to go on, please first check if your issue is a common issue listed here:

Also, please see this post regarding How to Get Your Question Answered Quickly:

The most important parts are:
1. Sample data as text, use the table tool in the editing bar
2. Expected output from sample data
3. Explanation in words of how to get from 1. to 2.

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