SUMX DAX Performance Issue

[srikanthgunnam]

Hello, I am using a SUMX function in one of my calculation. It is completely degrading the performance of visual. Here is my calculation:

Dummy =

CALCULATE(

              SUMX(DISTINCT(TBL[Account Name]),[Count])

)

In the above calculation count is a measure, which was calculated as follows:

CALCULATE(

              DISTINCTCOUNT(TBL[SaleType])

)

Can you please suggest me a way to improve the performance?

[v-xicai]

Hi  @srikanthgunnam ,
 
Does that make sense? If so, kindly mark my answer as a solution to help others having the similar issue and close the case. If not, let me know and I'll try to help you further.

Best regards
Amy

[srikanthgunnam · Accepted solution]

Hello,

Thank you so much for your response. As SUMX is a iterator function, it is degrading the performance. I was helped by some other user with the following solution

CountUnique = COUNTROWS(SUMMARIZE(TBL,TBL[Account Name],TBL[SaleType]))

[v-xicai]

Hi  @srikanthgunnam  ,

Glad to hear the issue is resolved,  you can accept your reply as solution, that way, other community members would benefit from your solution.

Best regards

Amy Cai

[v-xicai]

Hi @srikanthgunnam ,

How about delete the "CALCULATE" in your formula to simplified it. Or try to create measure using DAX below.

Dummy = var d= DISTINCTCOUNT(TBL[SaleType])

         return SUMX(DISTINCT(TBL[Account Name]),d)

You could refer to below blogs to optimize your DAX formula:

Tune your PowerPivot DAX query, don’t use the entire table in a FILTER and replace SUMX if possible

Nested SUMX or DAX Query?

Please understand that this link is provided “AS IS” with no warranties or guarantees of content changes, and confers no rights.

Best Regards,

Amy

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