use bulk_upsert with MySQL

[aksranka]

I am trying to use bulk_upsert with django ORM. I am using MySQL database as my backend. It does the insert part when some new rows are added but every time I triy to do an update using the update_fieldslist it throws an error complaining that the MySQL syntax is wrong:
'''
django.db.utils.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM (VALUES
'''

When I tried to debug this further I realized that manager_utils uses django-query-builder which is build for postgre sql by default.
Any help would be greatly appreciated. Thanks

Akshar Ranka