Eike Kettner 4028b7979e Fix mariadb timestamp columns
MariaDB automatically inserts the current time, even when saying `SET
datecol = null`.
2020-06-17 21:51:30 +02:00
..
2020-06-17 19:53:56 +02:00
2020-05-25 13:56:06 +02:00
2020-06-17 19:53:56 +02:00