Can a Lookupvalue value itself?

[Anonymous]

I have a list of user roles in the Role column in Table A, unfortunately that column has a mix of the names of the Role Groups and the different roles in the groups. i.e that column contains Accounting (role group), AP Clerk, AR Clerk (individual roles). I need a column in this table that is all Role Groups.

In a seperate table Table B - I have the Group, Role and abbreviation separted out, like this.

I started with adding a new column like this.

new column = LOOKUPVALUE('Table B [Group], 'Table B [Role Name], 'Table A' [Role] ???

However I need the value in the new column to remain the Table A [Role] value if it doesn't match the criteria in the lookupvalue. 

How do I do that? 

FYI, learning DAX. Thank you in advance.

[amitchandak]

@Anonymous , try earlier

Power BI DAX- Earlier, I should have known Earlier: https://youtu.be/CVW6YwvHHi8
https://www.youtube.com/watch?v=cN8AO3_vmlY&t=17820s

maxx(filter('Table B', 'Table B [Role Name]=  'Table A' [Role]), 'Table B'[Group] )

[Anonymous]

Thanks for the suggestion but that gave me the same result as the lookupvalue I tried. The cells that already have the group name come back blank. I need the cells with the group name to come back with the same group name that they have.

[Anonymous · Accepted solution]

Hi @Anonymous ,

I suggest you to try code as below to create a calculated column in Table A.

Group =
VAR _GROUPLIST =
    VALUES ( 'Table B'[Group] )
VAR _GROUP =
    CALCULATE (
        MAX ( 'Table B'[Group] ),
        FILTER ( 'Table B', 'Table B'[Role Name] = EARLIER ( 'Table A'[Role] ) )
    )
RETURN
    IF ( 'Table A'[Role] IN _GROUPLIST, 'Table A'[Role], _GROUP )

Best Regards,
Rico Zhou

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