From 7b26423d9008f5f67db342e5bd06e492535a6d68 Mon Sep 17 00:00:00 2001
From: Salvo 'LtWorf' Tomaselli <tiposchi@tiscali.it>
Date: Wed, 11 Nov 2015 16:35:49 +0100
Subject: [PATCH] Typo in variable name

---
 relational/optimizations.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/relational/optimizations.py b/relational/optimizations.py
index b36a70a..3b5886d 100644
--- a/relational/optimizations.py
+++ b/relational/optimizations.py
@@ -478,7 +478,7 @@ def select_union_intersect_subtract(n):
     Removing a O(n²) operation like the union'''
     changes = 0
     if n.name in (UNION, INTERSECTION, DIFFERENCE) and n.left.name == SELECTION and n.right.name == SELECTION and n.left.child == n.right.child:
-        cahnges = 1
+        changes = 1
 
         d = {UNION: 'or', INTERSECTION: 'and', DIFFERENCE: 'and not'}
         op = d[n.name]