Masking Name Data using DAX Filter for Row Level Security

Hi faikar ,

Try this:

=IF(
UNICODE( LEFT( DIM_TRAVELEMPLOYEE[VKTPNAME], 1 ) ) >= 65 && UNICODE( LEFT( DIM_TRAVELEMPLOYEE[VKTPNAME], 1 ) ) <= 90 ||
UNICODE( LEFT( DIM_TRAVELEMPLOYEE[VKTPNAME], 1 ) ) >= 97 && UNICODE( LEFT( DIM_TRAVELEMPLOYEE[VKTPNAME], 1 ) ) <= 122,
LEFT(DIM_TRAVELEMPLOYEE[VKTPNAME], 3) & REPT("*", LEN(DIM_TRAVELEMPLOYEE[VKTPNAME]) - 3),
"NO DATA"
)

Masking Logic: The formula checks whether the first character of VKTPNAME falls within the uppercase or lowercase alphabetic range. If it does, it masks the name except for the first three characters, otherwise, it returns "NO DATA."

Please mark this as solution if it helps you. Appreciate Kudos.

Hello faikar ,

Looks like, You are checking whether the first letter of DIM_TRAVELEMPLOYEE[VKTPNAME] is a letter between A-Z (upper or lower case), but this logic may cause the formula to behave unexpectedly. If you want to apply a mask across all rows, this condition might not be returning results as expected.

An updated version of your DAX formula that would mask the names but allow the first three characters to be visible, and replace the rest with asterisks  can be 

=IF(
LEN(DIM_TRAVELEMPLOYEE[VKTPNAME]) > 3, // if the name has more than 3 characters
LEFT(DIM_TRAVELEMPLOYEE[VKTPNAME], 3) & REPT("*", LEN(DIM_TRAVELEMPLOYEE[VKTPNAME]) - 3), // first three characters visible and remaining characters are replaced with asterisks
DIM_TRAVELEMPLOYEE[VKTPNAME] // If name is less than 3 characters, show as is
)

update this dax as per requirement and use in security expression.

I hope this helps.

Did I answer your query ? Mark this as solution if this has solved your issue, Kudos are appreciated.

Warm Regards,

Neeraj