Skip to main content
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

Get Fabric Certified for FREE during Fabric Data Days. Don't miss your chance! Request now

Reply
Anonymous
Not applicable

Cardinality Issue

‎09-11-2018 01:26 PM

Hi, I am trying to create relationship between Calendar_Date (1/1/2000 - 12/31/2020) and admission_date column. Admission_date column has repeatitive dates, as many person can take admission on same day. But Calendar_Date has unique values only. But still I am not able to create Many to one relationship. Power BI is automatically detecting it as Many to Many, and won't let me change it. Please help!

Capture.JPG

 

Labels:
Message 1 of 4
2,553 Views
1 ACCEPTED SOLUTION
v-chuncz-msft
Community Support
Community Support
In response to Anonymous

‎09-17-2018 01:40 AM

@Anonymous,

 

Column 'Calendar_Date' contains blank values and this is not allowed for columns on the one side of a many-to-one relationship.

Community Support Team _ Sam Zha
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

View solution in original post

Message 4 of 4
2,525 Views
3 REPLIES 3
RMDNA
Solution Sage
Solution Sage

‎09-11-2018 01:40 PM

Try deleting the relationship and re-creating it manually.

Message 2 of 4
2,550 Views
0
Anonymous
Not applicable
In response to RMDNA

‎09-12-2018 07:22 AM

Still not working, I will appreciate any insight on this!

Message 3 of 4
2,528 Views
0
v-chuncz-msft
Community Support
Community Support
In response to Anonymous

‎09-17-2018 01:40 AM

@Anonymous,

 

Column 'Calendar_Date' contains blank values and this is not allowed for columns on the one side of a many-to-one relationship.

Community Support Team _ Sam Zha
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Message 4 of 4
2,526 Views

Helpful resources

Announcements
November Power BI Update Carousel

Power BI Monthly Update - November 2025

Check out the November 2025 Power BI update to learn about new features.

Fabric Data Days Carousel

Fabric Data Days

Advance your Data & AI career with 50 days of live learning, contests, hands-on challenges, study groups & certifications and more!

FabCon Atlanta 2026 carousel

FabCon Atlanta 2026

Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.

View All
Top Solution Authors
View All
Top Kudoed Authors
View All