From f79ce63fdb6788c8b4857fece6c86de57fc129ee Mon Sep 17 00:00:00 2001
From: Tim Graham <timograham@gmail.com>
Date: Sun, 1 Feb 2015 20:18:15 -0500
Subject: [PATCH] Removed query.alias_diff()
This function is unused since 6fe2b001dba45134d7c10729c57959995e241a88
---
django/db/models/sql/query.py | 11 -----------
1 file changed, 11 deletions(-)
diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py
index 54ca929a85..6b50bb8bf6 100644
--- a/django/db/models/sql/query.py
+++ b/django/db/models/sql/query.py
@@ -2033,17 +2033,6 @@ def is_reverse_o2o(field):
return not hasattr(field, 'rel') and field.field.unique
-def alias_diff(refcounts_before, refcounts_after):
- """
- Given the before and after copies of refcounts works out which aliases
- have been added to the after copy.
- """
- # Use -1 as default value so that any join that is created, then trimmed
- # is seen as added.
- return set(t for t in refcounts_after
- if refcounts_after[t] > refcounts_before.get(t, -1))
-
-
class JoinPromoter(object):
"""
A class to abstract away join promotion problems for complex filter