MySQL组并合并JSON值

I am using some native JSON fields to store information about some application entities in a MySQL 5.7.10 database. I can have 'N' rows per "entity" and need to roll-up and merge the JSON objects together, and any conflicting keys should replace instead of merge. I can do this through code, but if I can do it natively and efficiently in MySQL even better.I am using some native JSON fields to store inf