Fixed #10199 -- Modified aggregate() calls to clone the base query so that the base query can be reused. Thanks to Alex Gaynor for the report and patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9819 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 4 insertions, 2 deletions

diff --git a/django/db/models/query.py b/django/db/models/query.py
index e33a858a81..c06a37897e 100644
--- a/django/db/models/query.py
+++ b/django/db/models/query.py
@@ -307,11 +307,13 @@ class QuerySet(object):
         for arg in args:
             kwargs[arg.default_alias] = arg
 
+        query = self.query.clone()
+
         for (alias, aggregate_expr) in kwargs.items():
-            self.query.add_aggregate(aggregate_expr, self.model, alias,
+            query.add_aggregate(aggregate_expr, self.model, alias,
                 is_summary=True)
 
-        return self.query.get_aggregation()
+        return query.get_aggregation()
 
     def count(self):
         """