id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
8191	Queryset improvements for extra() calls	Malcolm Tredinnick	Malcolm Tredinnick	"There are a few related problems in calling the `extra()` on querysets related to it handles parameters for the `extra_select` parameter. Currently they

 * don't merge correctly
 * aren't removed correctly
 * don't handle updates correctly.

All of these involve the same dozen lines of code, so I'm making this the tracking ticket for the three problems.

I'm working on patch that incorporates mullendr's diagnoses and ideas from #7957 and #7961. It doesn't quite work to address them individually at the moment."		closed	Database layer (models, ORM)	dev		fixed		Matthijs	Accepted	0	0	0	0	0	0