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
36093	Calling `full_clean()` on an existing child model instance in a multi-table inheritance should not execute a database query.	Sage Abdullah		"Regression in bf7b17d16d3978b2e1cee4a0f7ce8840bd1a8dc4.

The following test now fails after the above commit:

{{{
diff --git a/tests/model_inheritance/tests.py b/tests/model_inheritance/tests.py
index 6b005fcef0..28d03e1687 100644
--- a/tests/model_inheritance/tests.py
+++ b/tests/model_inheritance/tests.py
@@ -343,6 +343,12 @@ class ModelInheritanceTests(TestCase):

         self.assertEqual(type(MethodOverride.foo), DeferredAttribute)

+    def test_full_clean(self):
+        restaurant = Restaurant.objects.create()
+        with self.assertNumQueries(0):
+            with self.assertRaises(ValidationError):
+                restaurant.full_clean()
+

 class ModelInheritanceDataTests(TestCase):
     @classmethod
}}}

This is because the primary key of a child model is a `OneToOneField` to the parent model (e.g. `place_ptr`), and it's not in `pk_fields`, so the changes to [https://github.com/django/django/blob/bf7b17d16d3978b2e1cee4a0f7ce8840bd1a8dc4/django/db/models/base.py#L1496-L1498 the check for the check for skipping primary key when editing] no longer passes for child models."	Bug	new	Database layer (models, ORM)	dev	Release blocker				Unreviewed	0	0	0	0	0	0