[2.0.x] Fixed #29229 -- Fixed column mismatch crash when combining two annotated values_list() querysets with union(), difference(), or intersection().

Regression in 7316720603821ebb64dfe8fa592ba6edcef5f3e.

Backport of a0c03c62a8ac586e5be5b21393c925afa581efaf from master

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/queries/test_qs_combinators.py b/tests/queries/test_qs_combinators.py
index 8026bf227d..e2ec18c034 100644
--- a/tests/queries/test_qs_combinators.py
+++ b/tests/queries/test_qs_combinators.py
@@ -119,6 +119,17 @@ class QuerySetSetOperationTests(TestCase):
         reserved_name = qs1.union(qs1).values_list('name', 'order', 'id').get()
         self.assertEqual(reserved_name[:2], ('a', 2))
 
+    def test_union_with_two_annotated_values_list(self):
+        qs1 = Number.objects.filter(num=1).annotate(
+            count=Value(0, IntegerField()),
+        ).values_list('num', 'count')
+        qs2 = Number.objects.filter(num=2).values('pk').annotate(
+            count=F('num'),
+        ).annotate(
+            num=Value(1, IntegerField()),
+        ).values_list('num', 'count')
+        self.assertCountEqual(qs1.union(qs2), [(1, 0), (2, 1)])
+
     def test_count_union(self):
         qs1 = Number.objects.filter(num__lte=1).values('num')
         qs2 = Number.objects.filter(num__gte=2, num__lte=3).values('num')