Query for unique values in two columns.

[PascalvanDongen]

Hello everyone!

I am relatively new to Power BI, specifically to using Power Query. I have multiple source files, which all use a certain code to distinguish certain budgets. These codes have a short description, which is always the same for the code. The data looks like the sample below. 

In order to define the relationships between my different sources, I'm trying to create a 'master' tab in Power Query, that contains all unique codes and descriptions. How can I do this? I know about List.Distinct, but that doesn't work if I want to do it for two columns. If I try do define relationships now, it doesn't work because the codes are not unique. 

The second table shows what I'm trying to achieve.

Thanks so much for helping and thinking with me!

What I have:

Code	Description	Amount
9999X1111	Car parts	100
8888X2222	Truck parts	60
9999X1111	Car parts	-10

What I want to create:

Code	Description
9999X1111	Car parts
8888X2222	Truck parts

[vanessafvg · Accepted solution]

you mean like this?

1. Remove the amount column

2.  highlight both columns and right click remove duplicates.

see attached.

but there are various ways, this is just one way.

[PascalvanDongen]

Thanks so much! I was thinking way to difficult to solve this easy problem.