T-SQL CASE Clause: How to specify WHEN NULL

Question

I wrote a T-SQL Statement similar like this (the original one looks different but I want to give an easy example here):

SELECT first_name + 
    CASE last_na         


        

Answer 1

Use the CONCAT function available in SQL Server 2012 onward.

SELECT CONCAT([FirstName], ' , ' , [LastName]) FROM YOURTABLE