In regards to SSChasing Mays concerns about committed transactions being rolled out, 'Committing inner transactions is ignored by the SQL Server Database Engine' (http://msdn.microsoft.com/en-us/library/ms189336.aspx).

Real committed transactions can't be rolled out ('A transaction cannot be rolled back after a COMMIT TRANSACTION statement is executed.' (http://msdn.microsoft.com/en-us/library/ms181299.aspx)).

Perhaps the related QotD answer explanation element ('... (including those inner transactions that have been committed)') could have been better worded.