Measure vs Calculation

[amirabedhiafi]

I am using Power BI Desktop to develop a model. It has a table named Sales, which includes a column named CustomerKey. In reports, I need a calculation to show the number of different customers who have placed orders. What type of DAX calculation will I add to the Sales table?

- measure 

- calculated column

- computed column

- calculated table

And what's the difference between them ?

[amitchandak · Accepted solution]

@amirabedhiafi , In this case it will be measure. Sum(Sales[Sales Amount])

refer these

https://www.sqlbi.com/articles/calculated-columns-and-measures-in-dax/

https://docs.microsoft.com/en-us/power-bi/transform-model/desktop-calculated-tables