SELECT * FROM pivot_table
  UNPIVOT INCLUDE NULLS 
    (yearly_total FOR order_mode IN (store AS 'direct', internet AS 'online'))
  ORDER BY year, order_mode;


---------------------------
SELECT *
FROM pivot_table
UNPIVOT INCLUDE NULLS (yearly_total FOR order_mode IN (store AS 'direct', internet AS 'online'))
ORDER BY year, order_mode;