SUMX Function Degrading the Performance

[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?

[Stachu · Accepted solution]

SUMX is iterator, that's why it's so much slower

how about the one below for your Dummy measure

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

[srikanthgunnam]

Hello @Stachu,

I have two tables like TBL and CUST. I have created the CUST table using the DAX.

CUST=

ADDCOLUMNS(

SUMMARIZE(FILTER(TBL,NOT(TBL[Account])=BLANK()),TBL[Account ],

"Sale",CALCULATE(SUM(TBL[Sale Amount]),FILTER(TBL,TBL[Ind]="Yes"),FILTER(TBL,TBL[Ind2]="Yes" && NOT(TBL[Code]) IN {"4"} ))

),

"Grp",

IF ( [Premium] >=0 && [Premium]<100, "0-100",IF ( [Premium] >=100&& [Premium]<500, "100-500",IF ( [Premium] >=500 && [Premium]<1000, "500-1000M",IF ( [Premium] >=1000, "1000+" )))))

Now, I have created a relationship between those two tables using "Account" column and created a Cust Grp column in TBL using Related(CUST[Grp]). I want build a customer count based on grouping. 

Problem:

Counts were fine when there were no filters applied but when I apply a filter on TBL tables Sale amount in CUST table is not filtering(I selected filtering as Both direction). As a result, counts in the group are not being calculated properly. 

For example, if I filter country in TBL to the "USA" the premium in the CUST table is not changing.

Please help me out!!!!

Thanks in advance!!!!!

[Stachu]

Tables and calculated columns are only calculated once, once you refresh the table that holds them - they are never changing based on the slicer/visual filters

if you want to have changing Grp then you need to use a measure instead of calculated column.

If you need help with that I'd suggest creating a new thread with samples from both tables, and marking this one as solved - helps to avoid the clutter on the forum, and may help other user with similar SUMX problems 🙂 

[srikanthgunnam]

Thank you so much!!! Worked like a charm