\'-00:00:00.000001\'\nmysql> SELECT TIMEDIFF(\'2008-12-31 23:59:59.000001\',\n    ->                 \'2008-12-30 01:01:01.000002\');\n        -> \'46:58:57.999999\'\n','https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html');