[1.2.X] Fixed #14754 -- corrected using an aggregate in an F expressions when that queryset is later used in a subquery. Thanks to master for the patch. Backport of [14681].

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14682 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/aggregation_regress/models.py

@@ -1,8 +1,5 @@
 # coding: utf-8
-import pickle
-
-from django.db import connection, models, DEFAULT_DB_ALIAS
-from django.conf import settings
+from django.db import models
 
 
 class Author(models.Model):
@@ -49,7 +46,6 @@ class Store(models.Model):
     def __unicode__(self):
         return self.name
 
-
 class Entries(models.Model):
     EntryID = models.AutoField(primary_key=True, db_column='Entry ID')
     Entry = models.CharField(unique=True, max_length=50)