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

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

is recommended, but if you are really hooked on CONCAT, wrap it in {fn } and you can use the ODBC function like:

SELECT {fn CONCAT(ISNULL(FirstName,''), ISNULL(LastName,''), ISNULL(Email,''))} as Vitals FROM MEMBERS

If you need firstlast but just last when first is null you can do this:

ISNULL(FirstName+' ','') + ISNULL(LastName,'')

I added the space on firstname which might be null -- that would mean the space would only survive if FirstName had a value.

To put them all together with a space between each:

RTRIM(ISNULL(Firstname+' ','') + ISNULL(LastName+' ','') + ISNULL(Email,''))