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!Learn from the best! Meet the four finalists headed to the FINALS of the Power BI Dataviz World Championships! Register now
when I merged a query and expand the table, I met the error as below.
Expression.Error: We cannot convert the value null to type Logical.
Details:
Value=
Type=[Type]
but I checked all my data there is no logical datatype. I also merged the same query with different Key it can work. how to solve this?
can you share some sample ?
my code is as above, I merged same table here, but the secode time I met the error.
Share feedback directly with Fabric product managers, participate in targeted research studies and influence the Fabric roadmap.
Check out the February 2026 Power BI update to learn about new features.
| User | Count |
|---|---|
| 14 | |
| 12 | |
| 10 | |
| 7 | |
| 6 |