====== Disable ONLY_FULL_GROUP_BY ======
== which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by ==

[[https://stackoverflow.com/questions/23921117/disable-only-full-group-by]]

<code>
mysql > SET GLOBAL sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));
</code>

<code - my.cnf>
[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"
</code>