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

SQL Server does not have a CONCAT function.
(Update: Starting from MS SQL Server 2012 it was introduced CONCAT function)

In the default SQL Server behavior, NULLs propagate through an expression.

In SQL Server, one would write:

SELECT FirstName + LastName + Email as Vitals FROM MEMBERS

If you need to handle NULLs:

SELECT ISNULL(FirstName, '') + ISNULL(LastName, '') + ISNULL(Email, '') as Vitals FROM MEMBERS