Remove duplicates based on two columns

[Anonymous]

Hello,

The data from my invoices is collected per invoice line, but i only want to have one line number per invoice. So every invoice number can only have one unique Line number and the rest of the rows can be deleted, if this makes any sense.

So I want to transform this:

into this:

but ofcourse on a much grander scale.

how can i do this? thanks in advance!

[amitchandak]

@Anonymous , In power query you use remove duplicates.

https://www.youtube.com/watch?v=Hc5bIXkpGVE

In dax

Table = distinct(Table)

Table = distinct(All(Table[Invoice Numer], Table[Line inumber Invoice]))

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[Anonymous]

@amitchandak  thanks for your reply, but I dont want to remove every duplicate I just want Every invoice number to have one unique Line number. So Invoice number 500012 can only have one unique value but it doesnt matter that this unique value has duplicates. so in the example below the invoice has 3 unique line numbers but I only want 1 of them and the rest can be deleted.

so this:

Becomes this:

Any idea how to achieve this?

[Anonymous · Accepted solution]

@Anonymous 

You can only filter the original table to only show 1 line number, but cannot remove roles.

There is a workaround that you can create a new table and use it to do calculations and create visuals.

Table 2 = CALCULATETABLE('Table',FILTER('Table',[Line Number]=MIN('Table'[Line Number])))

Paul Zheng _ Community Support Team
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.