I don't believe you can create a union query with SQL like:
SELECT *
FROM Yourtable
UNION
SELECT A, B, C, D
FROM Yourtable
EDIT: I tried and this actually worked
SELECT yourTable.*
FROM yourTable
UNION
SELECT Null, Null, Null, Null, Null, Null,Null
FROM YourTable;
I also changed the name of...