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

If you get (like I do in MySQL):

#1582 - Incorrect parameter count in the call to native function 'ISNULL'

You can replace ISNULL function by COALESCE:

CONCAT(COALESCE(FirstName,''),COALESCE(LastName,''),COALESCE(Email,''))