cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
BSLATTER
Helper III
Helper III

"Count Distinct Row" operation in Group By does not Query Fold?

Hi all,

 

I have a directquery Query on "MySalesTable" where I run a few filtering operations and it query folds fine. I then reference it and perform group bys to create "Imported" aggregate tables. So far so good.

 

However when I attempt to create an aggregated table based on the distinct number of invoices in my Sales data - It does not seem to utilize query folding (and thus does not complete in any kind of reasonable timeframe)


Here is the M code for my imported table:

 

let
Source = MySalesTable, 
#"Removed Other Columns" = Table.SelectColumns(Source,{"DIM_A_KEY", "DIM_B_KEY", "DIM_C_KEY", "INVOICEID"}),
#"Grouped Rows" = Table.Group(#"Removed Other Columns", {"DIM_A_KEY", "DIM_B_KEY", "DIM_C_KEY"}, {{"InvoiceCount", each Table.RowCount(Table.Distinct(_)), Int64.Type}})
in
#"Grouped Rows"

 

 

Any ideas why this won't query fold?

1 ACCEPTED SOLUTION
amitchandak
Super User
Super User
2 REPLIES 2
amitchandak
Super User
Super User

Thank you for that link - yes my problem was thinking "Count Distinct Rows" operation should query fold, whereas you actually have to "Remove Duplicates" and then "Count Rows" operation to maintain the query folding.

 

An odd issue - but this helped me resolve my situation. Thanks again!

Helpful resources

Announcements
Exciting changes

Power BI Community Changes

Check out the changes to the Power BI Community announced at Build.

May 2023 update

Power BI May 2023 Update

Find out more about the May 2023 update.

Kudo Data Story carousel

Data Stories Gallery

Visit our Data Stories Gallery and give kudos to your favorite Data Stories.

Top Solution Authors