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
18486	<model>.objects.none().update(**kwargs) updates everything!	joseph.daywalt@…	nobody	"I know this is an old version, but I haven't seen any tickets relating to it for any version period. I'll look into some of the newer versions after I clean up the mess this made in production. 

For a hypothetical model Cheese with more than 0 rows in the table, run Cheese.objects.none().update(**kwargs) and it updates the whole table. It should short-circuit and return 0."	Bug	closed	Database layer (models, ORM)	1.1	Normal	duplicate	update none emptyqueryset		Unreviewed	0	0	0	0	0	0