Return the uniqueidentifier generated by a default on insert Goal
Retrieve the latest guid value in real time after you have inserted the value in the table
Problem
Don't know how to do it
Info

The code should only specify new values for address and zipcode
There can be lots of data in the table

Table
CREATE TABLE [AddressBook]
(
    [testID] [uniqueidentifier] NOT NULL default newid(),
    [address] [nvarchar](50) NULL,
    [zipcode] [nvarchar](50) NULL
)
I think you are looking for output

DECLARE @MyTableVar table([testID] [uniqueidentifier]);
 INSERT [AddressBook] ([address], [zipcode])
        OUTPUT INSERTED.[testID] INTO @MyTableVar
 VALUES (N'address', N'zipcode');

--Display the result set of the table variable.
 SELECT [testID] FROM @MyTableVar;

GO


uniqueidentifier may not be the most efficient id here but this is an answer to the stated question