Fixed #14700 -- ensure that a raw query is only executed once per iteration.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14785 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/raw_query/tests.py

@@ -217,3 +217,8 @@ class RawQueryTests(TestCase):
         self.assertEqual(
             [o.pk for o in FriendlyAuthor.objects.raw(query)], [f.pk]
         )
+
+    def test_query_count(self):
+        self.assertNumQueries(1,
+            list, Author.objects.raw("SELECT * FROM raw_query_author")
+        )