how to remove not fully duplicates power bi

[kristimur]

After marge I have some problems with not full dublicates that should be removed. Have I can solve this without new collom

[lbendlin]

Deduplication in Power Query can be finely controlled. You can choose which columns should be included in the decision.  By default (in my opinion a bad default)  only the currently selected column is used for the deduplication.  You can modify the Power Query code to include all the columns that are important for your scenario. 

[kristimur]

Could you please show on screen?

[lbendlin]

Let's assume you have this table

You can deduplicate the entire table or you can deduplicate groups of individual columns.

[kristimur]

Yes but this is 2 colums and I need to base on 3, like this

[lbendlin]

Please provide sanitized sample data that fully covers your issue.
https://community.powerbi.com/t5/Community-Blog/How-to-provide-sample-data-in-the-Power-BI-Forum/ba-...

Please show the expected outcome based on the sample data you provided.