Sort by minimum value of two columns

Question

I use SQL Server 2008 R2.

I need to sort a table by the minimal value of two columns.

The table looks like this:

ID: integer; 
Date         


        

Answer 1

SELECT ID, Date1, Date2
FROM YourTable
ORDER BY (SELECT TOP(1) v FROM (VALUES (Date1), (Date2)) AS value(v) ORDER BY v)

Very similar to the @dyatchenko answer but without NULL issue