USERELATIONSHIP does not work on one-to-one

Zyg_D · ‎07-01-2020

The function USERELATIONSHIP nicely works when the top right relationship is one-to-many. But when I change it to one-to-one, the USERELATIONSHIP does not yield correct results. Why? It should not be affected at all, in my opinion.

Data:

Relationships (one-to-many):

Formula when one-to-many (correct result):

Relationships (one-to-one):

Formula when one-to-one (incorrect result):

Anonymous · ‎07-02-2020

Hi @Zyg_D ,

Please review the following documentations and check if they can help you.

Create and manage the relationship

The Cardinality of Power BI Relationship Demystified

One-To-One Relationships In Power BI

Best Regards

Rena

MFelix · ‎07-01-2020

Hi @Zyg_D ,

This is related with the way that the USERELATIONSHIP works, the function is used as a context transaction and the calculated columns force this to be a row context so the calculation will give inacturated values.

Check the blog post of SQL BI with a full detail on this, and that suggest in this case the use of LOOKUPVALUE or the use of CALCULATETABLE depending on expected results.

https://www.sqlbi.com/articles/userelationship-in-calculated-columns/

Regards

Miguel Félix

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parry2k · ‎07-01-2020

@Zyg_D first and foremost question, since this relationship is active, not sure why you are using USERELATIONSHIP, and 2nd you don't need to use MAX function, you can simply use RELATED function to get value from One side of the relatioship.

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Zyg_D · ‎07-01-2020

@parry2k wrote:
@Zyg_D first and foremost question, since this relationship is active, not sure why you are using USERELATIONSHIP, and 2nd you don't need to use MAX function, you can simply use RELATED function to get value from One side of the relatioship.

In the USERELATIONSHIP I am trying to use the bottom right relationship. However, I see that the top right one affects my results, which is bizzare.