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AC_DATA's avatar
AC_DATA
Frequent Visitor
4 years ago
Solved

Return dynamically sized sample based on row count from table filtered by user-selected dates

I have a complex request to be able to select a sample of data for auditing based on user-selected dates. My current approach is to have a date slicer so the user can select the date range and create...
Need Help
  • Anonymous's avatar
    Anonymous
    4 years ago

    Hi AC_DATA ,

     

    Use count() function to calculate the count rows of filtered table and use this count * 10%. Then use this number in the SAMPLE() function. This number could be a decimal number, you could use roundup() or rounddown() function to make it a whole number.

     

    Best Regards,

    Jay

Greg_Deckler's avatar
Greg_Deckler
Community Champion
4 years ago

AC_DATA That should be something like:

Measure =
  VAR __Count = COUNTROWS('Table') //the filtered table
  VAR __SampleSize = __Count * .1
RETURN
  SAMPLE(__SampleSize, ...)

Hard to be specific. Sorry, having trouble following, can you post sample data as text and expected output?
Not really enough information to go on, please first check if your issue is a common issue listed here: https://community.powerbi.com/t5/Community-Blog/Before-You-Post-Read-This/ba-p/1116882

Also, please see this post regarding How to Get Your Question Answered Quickly: https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

The most important parts are:
1. Sample data as text, use the table tool in the editing bar
2. Expected output from sample data
3. Explanation in words of how to get from 1. to 2.