Wondering how to resolve Incompatible with sql_mode=only_full_group_by? Our in-house experts are here to help you out with this article. Our mysql support is here to offer a lending hand with your queries and issues.
Incompatible with sql_modeonly_full_group_by
While migrating a client website from one WHM/cPanel to another WHM/cPanel,
We got an SQL error “Incompatible with sql_mode=only_full_group_by“. Below is the complete error message.
SELECT list is not in GROUP BY clause and contains nonaggregated column 'dbname.p.picfile'
Today, let us see the steps followed by our support techs to resolve incompatible error
MySQL 5.7.5+ has changed GROUP BY behavior to be SQL99 compliant (Older versions were not) and that was the reason for the error.
The workaround is to edit your MySQL configurations to remove ONLY_FULL_GROUP_BY option from sql_mode.
This will change GROUP BY behavior back to its pre-MySQL 5.7.5 behavior.
Remove ONLY_FULL_GROUP_BY in my.cnf file
If you have access to MySQL configuration file my.cnf, open the file:
# vim /etc/mysql/my.cnf
and add the below line to the end of the file:
[mysqld]
sql_mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"Restart the MySQL service:
# systemctrl restart mysql
Remove ONLY_FULL_GROUP_BY in WHM/cPanel
If your domain is on a cPanel (Shared Hosting), then you need to contact your hosting provider to update the same.
If you have access to WHM, then access PHPMyAdmin under SQL Services from WHM as shown below:
Click on Variables from the menu and search for SQL_MODE
Click on edit button and change remove ONLY_FULL_GROUP_BY. Once edited, click on save.
That’s it!
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Conclusion
In this article, we provide a quick and simple solution from our Support team to how to resolve Incompatible with sql_mode=only_full_group_by
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