Power BI is celebrating its 10th anniversary! To mark this milestone, I invite you to participate in the Power BI Christmas and holiday season Calendar. This special event features 24 unique challenges, each designed for you to solve and enjoy throughout the season.
A new challenge will be released every day, starting December 1st and continuing through December 24th. Each day presents a fresh opportunity to test your Power BI skills and creativity.
At the conclusion of the event, a winner will be selected from among the participants. Microsoft Finland has generously offered a prize, with further details to be provided soon.
Throughout December, we will maintain and announce a leaderboard, showcasing participants’ progress. Correct answers will also be shared. You will have two days to solve each puzzle; for example, the puzzle released on day one will close at the end of day two.
Day 2 Challenge
Business user has created Sales and Tax report. It is lagging Year-to-date functionality. Currently report shows just normal Sales per month figure on the YTD-chart.
Your task is to modify Datamodel in a way that year-to-date calculation for Sales and for Taxes would work.
There are few restrictions:
You are not allowed to change PowerQuery part. You are not allowed to change relationships.
Business user has decided to use 2 independent date dimension tables and it should remain like that.
Can you make both YTD calculations work?
Power BI Datamodel in this exercise can be found from: https://material.qumio.com/christmas2025/day2.zip
Please return information what you did to change to make sales on the left to work and what you did on the right to make Taxes to work!
You can return your answer at: https://forms.office.com/e/UbagSKcFuL You have until the end of 3rd of December to answer!
This Holiday season / Christmas challenge is provided by Vesa Tikkanen and is not linked to Microsoft as company. I just want us to have a puzzle every day going towards the 24th of December. This is pure community effort without any business relations behind. As such I try to do this as professional as possible but please remind that this is just for us to have fun. Microsoft finland has promised some swag as a prize but they are not related to winner pickup process neither they get any details of attendance. Information regarding attendance is not being used in any other thing than picking up the winner. So no marketing, no contacting just Power BI puzzle every day.