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Frequent Visitor

Creating new column based on values from values from two other tables

I have three tables with this relationship:


I want to create a new column/measure that I can use to filter my visuals later, which basically takes two columns, one from `Main` table and one from `MappingUtil`. 

So basically I want to filter out rows where the corresponding columns from `Main` and `MappingUtil` are equal. I tried using this to create new column in `Sheet1` table:



CorrectFloor = 
IF (
    RELATED ('Main'[Assigned Floor]) = RELATED ( 'MappingUtil'[Floor] ),




However Im getting error:


The column 'Main[Assigned Floor]' either doesn't exist or doesn't have a relationship to any table available in the current context




But as you can see in the model above it they are both linked to `Sheet1` table. What am I doing wrong?

Community Support
Community Support

Hi @atpbi10 ,


Could you please provide me with more details about your table and your problem or share me with your pbix file from your Onedrive for Business after removing sensitive data?😀


Best Regards,
Eyelyn Qin

Super User
Super User

that is incorrect. You can influence the connection type and the search direction.  Also check your source data for irregularities (duplicates in columns where you expected unique values)

Super User
Super User

You may want to read up on some of the fundamentals of Power BI, especially the application of star schemas. Please rethink the relationships between your tables.

Frequent Visitor

Hey thanks for the reply. I had no choice in how those relationships were applied, powerbi locked them in and does not allow to change.

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