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
34796	Deleting child table does not delete rows in parent table when using multi-table inheritance	Stephen Finucane	nobody	"If you have a child model that depends on a parent model via multi-table inheritance, then deleting the child will not delete rows in the parent model's table.

I am aware that we don't use database-level cascades (ticket:21961) but I expected this to be implemented by Django in Python, given the docs (https://docs.djangoproject.com/en/4.2/topics/db/models/#multi-table-inheritance) say that the automatically-created `OneToOneField` on the child model will have `on_delete=models.CASCADE`.

{{{
place_ptr = models.OneToOneField(
    Place,
    on_delete=models.CASCADE,
    parent_link=True,
    primary_key=True,
)
}}}

I have a minimal reproducer which can be found at https://github.com/stephenfin/django-bug-34796. In summary though, you simply need to create a table using multi-table inheritance and then delete that table. While the child table will be deleted, the corresponding rows in the parent table will remain."	Bug	closed	Database layer (models, ORM)	4.2	Normal	duplicate			Unreviewed	0	0	0	0	0	0