Fixed #34060 -- Fixed migrations crash when adding check constraints with JSONField __exact lookup on Oracle.

tests/schema/tests.py

@@ -2803,6 +2803,40 @@ class SchemaTests(TransactionTestCase):
             DurationModel.objects.create(duration=datetime.timedelta(minutes=4))
         DurationModel.objects.create(duration=datetime.timedelta(minutes=10))
 
+    @skipUnlessDBFeature(
+        "supports_column_check_constraints",
+        "can_introspect_check_constraints",
+        "supports_json_field",
+    )
+    @isolate_apps("schema")
+    def test_check_constraint_exact_jsonfield(self):
+        class JSONConstraintModel(Model):
+            data = JSONField()
+
+            class Meta:
+                app_label = "schema"
+
+        with connection.schema_editor() as editor:
+            editor.create_model(JSONConstraintModel)
+        self.isolated_local_models = [JSONConstraintModel]
+        constraint_name = "check_only_stable_version"
+        constraint = CheckConstraint(
+            check=Q(data__version="stable"),
+            name=constraint_name,
+        )
+        JSONConstraintModel._meta.constraints = [constraint]
+        with connection.schema_editor() as editor:
+            editor.add_constraint(JSONConstraintModel, constraint)
+        constraints = self.get_constraints(JSONConstraintModel._meta.db_table)
+        self.assertIn(constraint_name, constraints)
+        with self.assertRaises(IntegrityError), atomic():
+            JSONConstraintModel.objects.create(
+                data={"release": "5.0.2dev", "version": "dev"}
+            )
+        JSONConstraintModel.objects.create(
+            data={"release": "5.0.3", "version": "stable"}
+        )
+
     @skipUnlessDBFeature(
         "supports_column_check_constraints", "can_introspect_check_constraints"
     )