Convert time(0) (i.e. "1970-01-01 00:00:00") to NULL in order to avoid using a reserved timestamp value (https://mariadb.com/kb/en/timestamp/)
Convert time(0) (i.e. "1970-01-01 00:00:00") to NULL in order to avoid using a reserved timestamp value (https://mariadb.com/kb/en/timestamp/)