Transpose or unpivot every other column

Question

Basically what I am trying to do is transpose every other column to a row with the following columns data beside it.

The source can have only two columns up to one-thou

Answer 1

If you are using SQL Server 2008, I think you should look into using the CROSS APPLY (VALUES) technique:

http://www.sqlservercentral.com/articles/CROSS+APPLY+VALUES+UNPIVOT/91234/

Basically, it goes like this:

SELECT
  x.NewColumn1,
  x.NewColumn2
FROM YourTable t
CROSS APPLY (
    VALUES
        (t.OldColumn1, t.OldColumn2),
        (t.OldColumn3, t.OldColumn4),
        ...
) x (NewColumn1, NewColumn2);

Here's a runnable example: http://sqlfiddle.com/#!3/9a9d2/5/0