DAX Expression for Row Level Security

[Anonymous]

Help – I have the following tables.

FUFPermission is a list of users and the area they can have access to.

FUFPermission
Username	Area
b@b.co.uk	Back
c@c.co.uk	Front
c@c.co.uk	Side
d@d.co.uk	Side
e@e.co.uk	All

AFU is a table containing the Area

AFU
Area	anotherifeld	anotherfield1
Back	1	4
Front	2	5
Side	3	6

I need to create a DAX formula for the AFU table to filter the Area based on user on the FUFPermission table.  If the FUFPermission.Area = All then the user will have full access to all records  in AFU.

I have created the following DAX formula which filters the Area based on the FUFPermission table but I’m not sure how to include the part which shows all records if the Area value = All in FUFPermission.

IF

(

[Area] IN SELECTCOLUMNS (

FILTER (

'FUFPermission',

''FUFPermission' [Username]=USERPRINCIPALNAME()

),

Area,[Area]

),

TRUE()

)

[v-jianboli-msft]

Hi @Anonymous ,

Could you tell me if your problem has been solved? If it is, kindly Accept it as the solution. More people will benefit from it. Or if you are still confused about it, please provide me with more details about your table and your problem or share me with your pbix file after removing sensitive data.

Refer to:

How to provide sample data in the Power BI Forum

How to Get Your Question Answered Quickly

Best Regards,

Jianbo Li

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[v-jianboli-msft · Accepted solution]

Hi @Anonymous ,

Please try:

VAR _a =
    SELECTCOLUMNS (
        FILTER ( 'FUFpermission', [Username] = USERNAME () ),
        "Area", [Area]
    )
RETURN
    IF ( "All" IN _a, TRUE, [Area] IN _a )

Final output:

Best Regards,

Jianbo Li

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Anonymous]

Thanks for the response - not sure if this woud work as there is no physical relationship between the tables FUFPermission and AFU.