From
http://www.mysql.com/documentation/mysql/bychapter/manual_MySQL_Database_Adm
inistration.html#Default_privileges
The MySQL root user is created as a superuser who can do anything.
Connections must be made from the local host. Note: The initial root
password is empty, so anyone can connect as
maybe below info answer your question.
--- copy from mySQL Reference Manual for version 3.23.22-beta, section
7.3.6.2 The DATETIME, DATE and TIMESTAMP types ---
Illegal DATETIME, DATE or TIMESTAMP values are converted to the ``zero''
value of the appropriate type ('-00-00 00:00:00', '-00
