Earn the coveted Fabric Analytics Engineer certification. 100% off your exam for a limited time only!
I've experimented, but I have not come up with a solution for this scenario:
My Custom function accepts three parameters, the last two of which are optional. I want to pass parameters one and three only. How do I call the function?
Solved! Go to Solution.
Make sure that your second argument has no type. You will then be allowed to pass a null value as the second option.
Make sure that your second argument has no type. You will then be allowed to pass a null value as the second option.
Thanks Mike - back to the rescue!
That works indeed. Testing further, i found that this will also work with passing null, and with the added benefit of validating the data type of the parameters:
(P1 as text, optional P2 as nullable text, optional P3 as nullable text) =>
let
T1 = "P1 = " & P1,
T2 = if (P2 = null) then "; P2 = null()" else "; P2 = " & P2,
T3 = if (P3 = null) then "; P3 = null()" else "; P3 = " & P3,
Return = T1 & T2 & T3
in
Return
Hey J, I forgot that you could use nullable text. I wish more of the standard PQ functions would use them.