fix queries when subquery has a union#188

timgraham merged 1 commit intomongodb:mainmongodb/django-mongodb-backend:mainfrom

WaVEV:bugfix-Union-Subquery-Not-Mapping-Parent-Parameters-and-Collections-ProperlyWaVEV/django-mongodb-backend:bugfix-Union-Subquery-Not-Mapping-Parent-Parameters-and-Collections-ProperlyCopy head branch name to clipboard