ERROR 1067 (42000): Invalid default value for 'created_at'

Question

When I tried to alter the table it showed the error:

ERROR 1067 (42000): Invalid default value for \'created_at\'

I googled for this error

Answer 1

As mentioned in @Bernd Buffen's answer. This is issue with MariaDB 5.5, I simple upgrade MariaDB 5.5 to MariaDB 10.1 and issue resolved.

Here Steps to upgrade MariaDB 5.5 into MariaDB 10.1 at CentOS 7 (64-Bit)

1. Add following lines to MariaDB repo.

   nano /etc/yum.repos.d/mariadb.repo and paste the following lines.

[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.1/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1

2. Stop MariaDB, if already running service mariadb stop

3. Perform update

   yum update

4. Starting MariaDB & Performing Upgrade

   service mariadb start

   mysql_upgrade

Everything Done.

Check MariaDB version: mysql -V

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NOTE: Please always take backup of Database(s) before performing upgrades. Data can be lost if upgrade failed or something went wrong.