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
30841	Prevent using  __isnull lookup with non-boolean value.	André Ericson	André Ericson	`__isnull` should not allow for non-boolean values. Using truthy/falsey doesn't promote `INNER JOIN` to an `OUTER JOIN` but works fine for a simple queries. Using non-boolean values is [https://docs.djangoproject.com/en/2.2/ref/models/querysets/#isnull undocumented] and untested. IMO we should raise an error for non-boolean values to avoid confusion and for consistency.	Cleanup/optimization	closed	Database layer (models, ORM)	dev	Normal	fixed			Ready for checkin	1	0	0	0	0	0