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
2369	[patch] MySQL backend does not handle zero dates	jbowtie@…	Adrian Holovaty	"The MySQL backend installs custom conversions for DateFields and DateTimeFields. These conversion functions fail when parsing zero dates with ""ValueError: year is out of range"".

Solution one is to allow default MySQL parsing, which transparently treats zero dates as NULL and converts valid dates to datetime objects.
Solution two is to modify the conversion functions to return None when encountering a zero date.
"	defect	closed	Database layer (models, ORM)		normal	duplicate			Unreviewed	1	0	0	0	0	0