Doesn't need to sort, lets users of attribute_names sort them if they want

2 files changed, 3 insertions, 3 deletions

diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index b972b193e4..6573cd5e89 100644
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -1455,9 +1455,9 @@ MSG
         @attributes.has_key?(attr_name.to_s)
       end
 
-      # Returns an array of names for the attributes available on this object sorted alphabetically.
+      # Returns an array of names for the attributes available on this object.
       def attribute_names
-        @attributes.keys.sort
+        @attributes.keys
       end
 
       # Returns the value of the attribute identified by <tt>attr_name</tt> after it has been typecast (for example,
diff --git a/activerecord/test/cases/reflection_test.rb b/activerecord/test/cases/reflection_test.rb
index 3b9e4f42a6..389ca9eae6 100644
--- a/activerecord/test/cases/reflection_test.rb
+++ b/activerecord/test/cases/reflection_test.rb
@@ -25,7 +25,7 @@ class ReflectionTest < ActiveRecord::TestCase
   def test_read_attribute_names
     assert_equal(
       %w( id title author_name author_email_address bonus_time written_on last_read content group approved replies_count parent_id parent_title type created_at updated_at ).sort,
-      @first.attribute_names
+      @first.attribute_names.sort
     )
   end