Ticket #29542: 29542.diff

tests/annotations/tests.py

@@ -4 +4 @@
 from django.core.exceptions import FieldDoesNotExist, FieldError
 from django.db.models import (
     BooleanField, CharField, Count, DateTimeField, ExpressionWrapper, F, Func,
-    IntegerField, NullBooleanField, Q, Sum, Value,
+    IntegerField, NullBooleanField, OuterRef, Q, Subquery, Sum, Value,
 )
 from django.db.models.expressions import RawSQL
 from django.db.models.functions import Length, Lower
@@ -585 +585 @@
             qs,
             [{'jacob_name': 'Jacob Kaplan-Moss', 'james_name': 'James Bennett'}],
         )
+
+    def test_annotation_filter_with_subquery(self):
+        long_books_qs = Book.objects.filter(
+            publisher=OuterRef('pk'),
+            pages__gt=400,
+        ).values('publisher').annotate(count=Count('pk')).values('count')
+
+        publisher_books_qs = Publisher.objects.annotate(
+            total_books=Count('book'),
+        ).filter(
+            total_books=Subquery(long_books_qs, output_field=IntegerField()),
+        ).values('name')
+        self.assertCountEqual(publisher_books_qs, [{'name': 'Sams'}, {'name': 'Morgan Kaufmann'}])