IF condition based on two different tables

[Anonymous]

if [Custom ID] = Table.Column ([HistoricalformsaData], "Custom ID") then "Duplicate" else "New"

Created a custom column. But did not get the duplicate value. Need some help

[amitchandak]

@Anonymous , The information you have provided is not making the problem clear to me. Can you please explain with an example.
Can you share sample data and sample output in table format?
Appreciate your Kudos.
 

[Greg_Deckler]

@Anonymous - Not really enough information to go on, please first check if your issue is a common issue listed here: https://community.powerbi.com/t5/Community-Blog/Before-You-Post-Read-This/ba-p/1116882

Also, please see this post regarding How to Get Your Question Answered Quickly: https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

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.

[Anonymous]

This is historical file.

Merged file is mentioned below:

In this merged file I am using custom column to find a duplicate value from historical sheet. Use a power query mentioned earlier

[v-deddai1-msft]

Hi @Anonymous ,

Just merge two table and use the following formula to create new column:

if [Company Name] = [Table.Company name] and [Custom ID] = [Table.Custom ID] then "Duplicate" else "New"

For more details, please refer to https://qiuyunus-my.sharepoint.com/:u:/g/personal/pbipro_qiuyunus_onmicrosoft_com/EYTjxzWb321PhhOg-F3Zk8ABY8X405q1gQuMguTTndo0fQ?e=pB471M

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Best Regards,

Dedmon Dai

[amitchandak · Accepted solution]

@Anonymous , merge in Power query

https://radacad.com/append-vs-merge-in-power-bi-and-power-query

Find duplicate

https://www.youtube.com/watch?v=0T6zLiWhjvk

https://www.excelguru.ca/blog/2015/12/09/identify-duplicates-using-power-query/

Delete duplicate

https://community.powerbi.com/t5/Desktop/Remove-Duplicate-Rows-in-Query-Editor/td-p/515609

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

[Fowmy]

@Anonymous 

Can you check the attached file if you are getting the expected results?

You can download the file: HERE

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