How to enable ONLY_FULL_GROUP_BY in MySQL

Question

I have disabled ONLY_FULL_GROUP_BY by using SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY','')); . Now I want to restore the default settings.

Is it possible to enable the ONLY_FULL_GROUP_BY in MySQL again?

Thanks in advance

Answer 1

为避免其他配置出现问题，请使用 CONCAT：

SET GLOBAL sql_mode=(SELECT CONCAT(@@sql_mode, ',ONLY_FULL_GROUP_BY'));

Answer 2

If you are using Laravel, you could do this on runtime instead of making a global setting

//disable ONLY_FULL_GROUP_BY
DB::statement("SET sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));");

//Your SQL goes here - The one throwing the error (:

//re-able ONLY_FULL_GROUP_BY
DB::statement("SET sql_mode=(SELECT CONCAT(@@sql_mode, ',ONLY_FULL_GROUP_BY'));");