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
19849	ORM cleanup	Anssi Kääriäinen	nobody	"Three items:
  - Cleanup IS NOT NULL condition generation for negated lookups in add_filter() (also fixes one bug, and simplifies split_exclude()). Handled in commit: https://github.com/akaariai/django/commit/4d8ed818beb59b1e6d04eead6c9dad0bf2bdafb7
  - Removal of Query.join()'s promote kwarg. This also improves handling of promotion in select_related(). Before select_related() always promoted any used join if nullable, now only if the join is newly created. In case there is already existing inner join we know any null value will remove results in any case, so the louter join is wrong here. Commit: https://github.com/akaariai/django/commit/f7f7044dedabdd04b6806409239e040c25d2bb83
  - Cleaned up join promotion in combine(), commit: https://github.com/akaariai/django/commit/bfc88e7e3dded3d4259d70f31d65d36b0e197144

I plan to commit these shortly."	Cleanup/optimization	closed	Database layer (models, ORM)	dev	Normal	fixed			Accepted	1	0	0	0	0	0