Something

mysql> set @t='2007-01-01 00:00:00';Query OK, 0 rows affected (0.00 sec)mysql> select addtime('0000-00-00 00:00:00',timediff(now(),@t));+---------------------------------------------------+| addtime('0000-00-00 00:00:00',timediff(now(),@t)) |+---------------------------------------------------+| 0001-03-16 19:31:07                               |+---------------------------------------------------+1 row in set (0.00 sec)