We have a form that asks for the students first name and last name. I am trying to using concatenate and an array formula to display "Lastname.Firstname".

I used:


but it displays all the last name, a period, then all the first names - looking like this smithjohnsonjackson.johngeorgeharry. What am I doing wrong?


1 Answer 1

  • perhaps try it like this:

    =ARRAYFORMULA(IF(LEN(A:A), B:B&"."&A:A, ))



Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.