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schaetzles
Frequent Visitor

PowerBI Rankx very slow

Hey guys,
I have performance issues with the Rankx function.

Currently, i use the rankx function for a dynamic top n selection for a matrix with a slicer.

This works fine for a table with less than 200 customers.
However, if i use my table with 15000 customers, the matrix will not load.

I would be really glad for suggestions or workarounds.



The DAX for my rankx function is the following:

 

 

 

 

Rank__Customer = RANKX(ALL(Customer[CustomerName] ),[TotalSales])

 

 

 

 

 

1 ACCEPTED SOLUTION
v-jayw-msft
Community Support
Community Support

Hi @schaetzles ,

 

If the customer table only has the customername column.

 

 

new table = distinct(cusotmer[customername ])

 

 

If not, it is recommended to create a new table with only customername column, then link the new table with the customer table, and replace the customer table in your formula with the new table.

 

 

Rank__Customer = RANKX(ALL(new table[CustomerName] ),[TotalSales])

 

 

 

Best Regards,

Jay

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

View solution in original post

3 REPLIES 3
v-jayw-msft
Community Support
Community Support

Hi @schaetzles ,

 

If the customer table only has the customername column.

 

 

new table = distinct(cusotmer[customername ])

 

 

If not, it is recommended to create a new table with only customername column, then link the new table with the customer table, and replace the customer table in your formula with the new table.

 

 

Rank__Customer = RANKX(ALL(new table[CustomerName] ),[TotalSales])

 

 

 

Best Regards,

Jay

Community Support Team _ Jay
If this post helps, then please consider Accept it as the solution
to help the other members find it.
amitchandak
Super User
Super User

@schaetzles , if you are doing dynamic TOPN, then use TOPN

 

https://community.powerbi.com/t5/Community-Blog/Dynamic-TopN-made-easy-with-What-If-Parameter/ba-p/3...

 

TOPN: https://youtu.be/QIVEFp-QiOk

 

Also, is total sales is a simple measure?

Thanks for the answer! 
Total Sales is just a simple measure. 

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