Fixed #36149 -- Allowed subquery values against tuple exact and in lookups.

Non-tuple exact and in lookups have specialized logic for subqueries that can
be adapted to properly assign select mask if unspecified and ensure the number
of involved members are matching on both side of the operator.

1 files changed, 6 insertions, 0 deletions

diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py
index ec47d9aa24..0d1fe5fb43 100644
--- a/django/db/models/sql/query.py
+++ b/django/db/models/sql/query.py
@@ -1224,6 +1224,12 @@ class Query(BaseExpression):
         if self.selected:
             self.selected[alias] = alias
 
+    @property
+    def _subquery_fields_len(self):
+        if self.has_select_fields:
+            return len(self.selected)
+        return len(self.model._meta.pk_fields)
+
     def resolve_expression(self, query, *args, **kwargs):
         clone = self.clone()
         # Subqueries need to use a different set of aliases than the outer query.