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-rw-r--r--django/db/models/sql/query.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py
index ad78c4dd47..d7317059e3 100644
--- a/django/db/models/sql/query.py
+++ b/django/db/models/sql/query.py
@@ -738,6 +738,10 @@ class Query(object):
table = table_it.next()
if join == table and self.alias_map[join][ALIAS_REFCOUNT] > 1:
continue
+ # FIXME: Don't have to promote here (and in the other places in
+ # this block) if the join isn't nullable. So I should be
+ # checking this before promoting (avoiding left outer joins is
+ # important).
self.promote_alias(join)
if table != join:
self.promote_alias(table)