Hm, can you show me how to get this running?

declare @open bit

set @open = 0

SELECT * FROM orders

WHERE

shippeddate

CASE @Open

    WHEN 0 THEN

          Is Null

     ELSE

         IS NOT NULL

    END

Server: Nachr.-Nr. 156, Schweregrad 15, Status 1, Zeile 6

Falsche Syntax in der Nähe des CASE-Schlüsselwortes.