[Buildbot] #3451: tests running with MySQL backend produces suspicious warnings

[Buildbot trac]

#3451: tests running with MySQL backend produces suspicious warnings
----------------------+--------------------
Reporter:  rutsky     |       Owner:
    Type:  undecided  |      Status:  new
Priority:  major      |   Milestone:  0.9.+
 Version:  master     |  Resolution:
Keywords:             |
----------------------+--------------------

Comment (by rutsky):

 In https://github.com/buildbot/buildbot/pull/2015 @Riziero provides
 workaround for `can't have a default value` warnings, by setting
 `sql_mode='MYSQL40'` in MySQL configuration.
 Is this a "true way" to solve this issue?

--
Ticket URL: <http://trac.buildbot.net/ticket/3451#comment:1>
Buildbot <http://buildbot.net/>
Buildbot: build/test automation