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!The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now! Learn more
Hi,
I have two existing columns (Column1 and Column2), and I would like to create a new custom column in Power Query which returns:
-1 if Column1 and Column2 have the same values
0 if Column1 and Column2 do not match
Total count of non-blank rows from Column2 (essentially if the COUNTA founction in DAX) if Column1 contains 01.09.2022.
It would look something like this:
| Column1 | Column2 | Custom column |
| 31.08.2022 | null | 0 |
| 01.09.2022 | null | 2 |
| 02.09.2022 | 02.09.2022 | -1 |
| 03.09.2022 | null | 0 |
| 04.09.2022 | 04.09.2022 | -1 |
Thank you. But what about the following. How can that be done?
Return the Total count of non-blank rows from Column2 (essentially if the COUNTA founction in DAX) if Column1 contains 01.09.2022
The Power BI Data Visualization World Championships is back! Get ahead of the game and start preparing now!
Check out the November 2025 Power BI update to learn about new features.