From f98d47b1abff6263c3bf0514c64742e15f9a02b3 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Tue, 2 Jul 2013 11:17:20 -0700
Subject: [PATCH] no need to to_sym the column name, leave it as-is

---
 activerecord/lib/active_record/relation/calculations.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb
index 477da618df..3b24ed6754 100644
--- a/activerecord/lib/active_record/relation/calculations.rb
+++ b/activerecord/lib/active_record/relation/calculations.rb
@@ -92,7 +92,7 @@ def sum(*args)
     #   Person.sum("2 * age")
     def calculate(operation, column_name, options = {})
       if column_name.is_a?(Symbol) && attribute_alias?(column_name)
-        column_name = attribute_alias(column_name).to_sym
+        column_name = attribute_alias(column_name)
       end
 
       if has_include?(column_name)
-- 
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