Thank you for taking the time to report this bug and helping to make Ubuntu better.
We aim for no user-visible changes in updates to the stable release, and Oracle aim for this in their updates too, consulting with us about proposed changes that may change user behaviour first. In this case, it looks like it wasn't predicted that this change was anything more than a bug fix. Ideally we would have considered and looked into mitigating this change before landing this update. However, now that it has landed, I'm not sure that doing anything further about this is warranted. I believe that a "CREATE TABLE" would have failed with what you're trying anyway, so I think the upstream bug was valid in that it was silently accepting something that should have failed, and now it does. So I'll mark this bug Won't Fix. If you disagree, further discussion on what we should do instead is welcome - I'll stay subscribed. ** Changed in: mysql-5.7 (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1657989 Title: No more able to create non null datetime column To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.7/+bug/1657989/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs