How to resolve “ORDER BY clause is not in SELECT list” caused MySQL 5.7 with SELECT DISTINCT and ORDER BY

Question

I installed the new Ubuntu and my code has got a problem with MySQL.

( ! ) Warning: PDOStatement::execute(): SQLSTAT         


        

Answer 1

To get ->distinct('some_column') to work for me, I needed to disable ONLY_FULL_GROUP_BY option in mysql modes.

Rather than edit the mysql config file on the filesystem, I followed the instructions at Laravel : Syntax error or access violation: 1055 Error and added this to config/database.php:

        'strict' => true,
        'modes' => [
            // 'ONLY_FULL_GROUP_BY', // disabled to allow grouping by one column
            'STRICT_TRANS_TABLES',
            'NO_ZERO_IN_DATE',
            'NO_ZERO_DATE',
            'ERROR_FOR_DIVISION_BY_ZERO',
            'NO_AUTO_CREATE_USER',
            'NO_ENGINE_SUBSTITUTION'
        ],

In my project, the modes property was non-existent, so I simply pasted that bad boy in there.

NOTE: Make sure you understand that wiping the modes entirely is undesirable, and basically not strict mode, so you will lose debugging warning/error messages about stuff like varchar length exceeded. The trick is to avoid sql_mode="". Notice how above I am using 6 modes and explicitly omitting ONLY_FULL_GROUP_BY.