Join us at FabCon Atlanta from March 16 - 20, 2026, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.
Register now!Vote for your favorite vizzies from the Power BI Dataviz World Championship submissions. Vote now!
hello there,
When I was looking some examples of optimization for loading data I found below example:
as I understand correctly, firstly we need to get all periods from a data source and then we iterate for each period and load related data using custom function. I am curious how to implement such a function?
Regards!
How to get good help fast. Help us help you.
How To Ask A Technical Question If you Really Want An Answer
How to Get Your Question Answered Quickly - Give us a good and concise explanation
How to provide sample data in the Power BI Forum - Provide data in a table format per the link, or share an Excel/CSV file via OneDrive, Dropbox, etc.. Provide expected output using a screenshot of Excel or other image. Do not provide a screenshot of the source data. I cannot paste an image into Power BI tables.
DAX is for Analysis. Power Query is for Data Modeling
Proud to be a Super User!
MCSA: BI ReportingVote for your favorite vizzies from the Power BI World Championship submissions!
If you love stickers, then you will definitely want to check out our Community Sticker Challenge!
Check out the January 2026 Power BI update to learn about new features.
| User | Count |
|---|---|
| 7 | |
| 5 | |
| 4 | |
| 3 | |
| 3 |
| User | Count |
|---|---|
| 15 | |
| 11 | |
| 11 | |
| 8 | |
| 6 |