Allow invalid date in MySQL

Just in case you absolutely have to insert a date in MySQL that does’nt exist, eg 2014-02-30, you can run MySQL server in a special mode that authorizes such dates :

	mysqld --sql-mode="ALLOW_INVALID_DATES"

MySQL will only check that the month is in the range from 1 to 12 and the day is in the range from 1 to 31.
see Mysql DOC