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Code Issues 32 Releases Wiki Activity

[5.0.x] Fixed #34798 -- Fixed QuerySet.aggregate() crash when referencing expressions containing subqueries.

Browse Source 
Regression in 59bea9efd2,
complements e5c844d6f2.

Refs #28477, #34551.

Thanks Haldun Komsuoglu for the report.

Backport of 3b4a571275 from main
This commit is contained in:
Simon Charette
2023-10-15 21:59:15 -04:00
committed by Mariusz Felisiak
parent 12a19321b4
commit 4ccca9eedc
4 changed files with 32 additions and 2 deletions
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21
tests/aggregation/tests.py
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@@ -2260,6 +2260,27 @@ class AggregateAnnotationPruningTests(TestCase):
self.assertEqual(sql.count("select"), 3, "Subquery wrapping required")
self.assertEqual(aggregate, {"sum_total_books": 3})
def test_referenced_composed_subquery_requires_wrapping(self):
total_books_qs = (
Author.book_set.through.objects.values("author")
.filter(author=OuterRef("pk"))
.annotate(total=Count("book"))
)
with self.assertNumQueries(1) as ctx:
aggregate = (
Author.objects.annotate(
total_books=Subquery(total_books_qs.values("total")),
total_books_ref=F("total_books") / 1,
)
.values("pk", "total_books_ref")
.aggregate(
sum_total_books=Sum("total_books_ref"),
)
)
sql = ctx.captured_queries[0]["sql"].lower()
self.assertEqual(sql.count("select"), 3, "Subquery wrapping required")
self.assertEqual(aggregate, {"sum_total_books": 3})
@skipUnlessDBFeature("supports_over_clause")
def test_referenced_window_requires_wrapping(self):
total_books_qs = Book.objects.annotate(