DAX table or Query table

[Anonymous]

Hi all
I would like to hear your opinion on this subject:
Which is faster when uploading new data and refresh it? 
1. DAX table (which is an union of tables)
2. Query table (which is an append table from 2 or 3 queries)
Can i ask why?
Thanks a lot for your answers.
Best regards

Pedro

[amitchandak]

I agree to @Mariusz 

Refer : https://riptutorial.com/powerbi/topic/6980/power-query--m--and-dax---what-s-the-difference-

https://www.sqlbi.com/articles/comparing-dax-calculated-columns-with-power-query-computed-columns/

[Mariusz · Accepted solution]

Hi @Anonymous 

In general, the best practice is to create all tables, columns in Power Query, you will get better performance and compression most of the times, plus you do not need to load all the tables, just the appended one, where if you opt for Dax union solution you will need to load all tables to your model and this will increase the size.

Best Regards,
Mariusz

If this post helps, then please consider Accepting it as the solution.

Please feel free to connect with me.
LinkedIn

[Anonymous]

Awesome! Thank you so much