Error related to only_full_group_by when executing a query in MySql

Question

I have upgraded my system and have installed MySql 5.7.9 with php for a web application I am working on. I have a query that is dynamically created, and when run in older ve

Answer 1

You can add a unique index to group_id; if you are sure that group_id is unique.

It can solve your case without modifying the query.

A late answer, but it has not been mentioned yet in the answers. Maybe it should complete the already comprehensive answers available. At least it did solve my case when I had to split a table with too many fields.