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

1. First, check existing mode(s) are using the following command in your terminal:

   $ mysql -u root -p -e "SHOW VARIABLES LIKE 'sql_mode';"

   or

   mysql> show variables like 'sql_mode';

   You would see an output like below

2. Disable mode(s) via my.cnf: In this case, you need to remove NO_ZERO_IN_DATE, NO_ZERO_DATE modes

   Open my.cnf file (Generally you could find my.cnf file located in /etc/my.cnf or /etc/mysql/my.cnf)

   Update modes in my.cnf under [mysqld] heading

   sql_mode=ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

   Here I have omitted NO_ZERO_IN_DATE, NO_ZERO_DATE modes

3. Restart mysql server

   $ /etc/init.d/mysql restart

Answer 2

SET GLOBAL sql_mode = '';

Resolved my problem.