Append tables with same columns using DAX

[AlexisKMX]

Hi friends!

Basically is that, i want to merge or append tables that has the same columns (same quantity and same name) using DAX. I know how to do it in Power Query but I read on a post that DAX shows better performance when is about refreshing time than Power Query. 

Does anyone knows how to do a calculated table with DAX to merge multiple tables?

[Anonymous · Accepted solution]

Hi @AlexisKMX ,

Please try below dax function:

UNION: same as the append feature in Power Query

NATURALINNERJOIN/NATURALLEFTOUTERJOIN: same as the merge feature in Power Query

For more details, you can read related document: 

UNION function (DAX) - DAX | Microsoft Learn, UNION – DAX Guide

NATURALINNERJOIN function (DAX) - DAX | Microsoft Learn , NATURALLEFTOUTERJOIN function (DAX) - DAX | Microsoft Learn

Best regards,
Community Support Team_Binbin Yu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Padycosmos]

Hope this video helps:

https://www.youtube.com/watch?v=aWcTAy3hO3M