How to insert into a table with just one IDENTITY column?

Question

(Came up with this question in the course of trying to answer this other one)

Consider the following MS-SQL table, called GroupTable:

GroupID
-------
1  
2  
3  

where GroupID is the primary key and is an Identity column.

How do you insert a new row into the table (and hence generate a new ID) without using IDENTITY_INSERT ON?

Note that this:

INSERT INTO GroupTable() Values ()   

... won't work.

edit: we're talking SQL 2005 or SQL 2008 here.

Answer 1

This should work:

INSERT INTO GroupTable DEFAULT VALUES