Fixed bug where usage of new :class:`.Bundle` object would cause

the :attr:`.Query.column_descriptions` attribute to fail.

3 files changed, 19 insertions, 2 deletions

diff --git a/doc/build/changelog/changelog_09.rst b/doc/build/changelog/changelog_09.rst
index 89d8e14f3..75579f758 100644
--- a/doc/build/changelog/changelog_09.rst
+++ b/doc/build/changelog/changelog_09.rst
@@ -15,6 +15,12 @@
     :version: 0.9.0b2
 
     .. change::
+        :tags: bug, orm
+
+        Fixed bug where usage of new :class:`.Bundle` object would cause
+        the :attr:`.Query.column_descriptions` attribute to fail.
+
+    .. change::
         :tags: bug, examples
 
         Fixed bug which prevented history_meta recipe from working with
diff --git a/lib/sqlalchemy/orm/query.py b/lib/sqlalchemy/orm/query.py
index 1b83f3fb8..34b9691f5 100644
--- a/lib/sqlalchemy/orm/query.py
+++ b/lib/sqlalchemy/orm/query.py
@@ -3198,7 +3198,7 @@ class Bundle(object):
 class _BundleEntity(_QueryEntity):
     def __init__(self, query, bundle, setup_entities=True):
         query._entities.append(self)
-        self.bundle = bundle
+        self.bundle = self.expr = bundle
         self.type = type(bundle)
         self._label_name = bundle.name
         self._entities = []
diff --git a/test/orm/test_query.py b/test/orm/test_query.py
index 63e3c4bb9..4d276896c 100644
--- a/test/orm/test_query.py
+++ b/test/orm/test_query.py
@@ -19,7 +19,7 @@ from sqlalchemy.testing.assertions import eq_, assert_raises, assert_raises_mess
 from sqlalchemy.testing import AssertsCompiledSQL
 from test.orm import _fixtures
 from sqlalchemy.testing import fixtures, engines
-
+from sqlalchemy.orm import Bundle
 from sqlalchemy.orm.util import join, outerjoin, with_parent
 
 class QueryTest(_fixtures.FixtureTest):
@@ -74,6 +74,7 @@ class RowTupleTest(QueryTest):
         address_alias = aliased(Address, name='aalias')
         fn = func.count(User.id)
         name_label = User.name.label('uname')
+        bundle = Bundle('b1', User.id, User.name)
         for q, asserted in [
             (
                 sess.query(User),
@@ -112,6 +113,15 @@ class RowTupleTest(QueryTest):
                         'expr':fn
                     },
                 ]
+            ),
+            (
+                sess.query(bundle),
+                [
+                    {'aliased': False,
+                    'expr': bundle,
+                    'type': Bundle,
+                    'name': 'b1'}
+                ]
             )
         ]:
             eq_(
@@ -119,6 +129,7 @@ class RowTupleTest(QueryTest):
                 asserted
             )
 
+
     def test_unhashable_type(self):
         from sqlalchemy.types import TypeDecorator, Integer
         from sqlalchemy.sql import type_coerce