Ticket #17990: test-17990.diff

tests/ordering/tests.py

@@ -194 +194 @@
             len(list(Article.objects.order_by("?"))), 4
         )
 
+    def test_random_ordering_distinct(self):
+        author = Author.objects.create()
+        Article.objects.update(author=author)
+        self.assertSequenceEqual(
+            Author.objects.filter(article__in=[self.a1, self.a2]).order_by('?').distinct(),
+            [author],
+        )
+
     def test_reversed_ordering(self):
         """
         Ordering can be reversed using the reverse() method on a queryset.