CONCAT'ing NULL fields

Question

I have a table with three fields, FirstName, LastName and Email.

Here\'s some dummy data:

FirstName | LastName | Email
Adam        West       adam@west.c         


        

Answer 1

Starting from MS SQL Server 2012 it was introduced CONCAT function and according to MSDN

Null values are implicitly converted to an empty string. If all the arguments are null, an empty string of type varchar(1) is returned.

so it's enough to use CONCAT without IsNull

CONCAT(FirstName, LastName, Email)