Add real .entities to _BundleEntity

Fixed bug where the single-table inheritance query criteria would not
be inserted into the query in the case that the :class:`.Bundle`
construct were used as the selection criteria.

Change-Id: Ib7c128ceef5c3220a098cdfd0270c43a2a67716d
Fixes: #3874

1 files changed, 7 insertions, 2 deletions

diff --git a/lib/sqlalchemy/orm/query.py b/lib/sqlalchemy/orm/query.py
index 340e71d25..770345315 100644
--- a/lib/sqlalchemy/orm/query.py
+++ b/lib/sqlalchemy/orm/query.py
@@ -3802,11 +3802,16 @@ class _BundleEntity(_QueryEntity):
                 else:
                     _ColumnEntity(self, expr, namespace=self)
 
-        self.entities = ()
-
         self.supports_single_entity = self.bundle.single_entity
 
     @property
+    def entities(self):
+        entities = []
+        for ent in self._entities:
+            entities.extend(ent.entities)
+        return entities
+
+    @property
     def entity_zero(self):
         for ent in self._entities:
             ezero = ent.entity_zero