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
23139	mysql backend should use CHAR instead of VARCHAR if model has a CharField of fixed length.	Damien Nozay	nobody	"see as well https://code.djangoproject.com/ticket/23138 which asks for min_length to be added to `models.fields.Field`.

For optimization purposes, if I have a model that wants exactly N characters for a field, then `CHAR` uses less bytes than `VARCHAR`.
One way to detect that intent is if you have `CharField(min_length=N, max_length=N)` -- in other words `min_length == max_length`.

common example: a hash always has the same length (always?).

https://github.com/django/django/pull/2921
"	Uncategorized	closed	Database layer (models, ORM)	1.6	Normal	duplicate			Unreviewed	0	0	0	0	0	0