From 86266cc08d029b5ee3b578966eb2d6b5dc7c717d Mon Sep 17 00:00:00 2001
From: Roman <roman.lenegrate@gmail.com>
Date: Thu, 7 Aug 2008 22:22:48 +0200
Subject: [PATCH] simplify AR#exists?: no need to select any column

---
 activerecord/lib/active_record/base.rb |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index 29c2995..348b029 100644
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -634,7 +634,7 @@ module ActiveRecord #:nodoc:
       def exists?(id_or_conditions)
         connection.select_all(
           construct_finder_sql(
-            :select     => "#{quoted_table_name}.#{primary_key}",
+            :select     => '1',
             :conditions => expand_id_conditions(id_or_conditions),
             :limit      => 1
           ),
-- 
1.5.5.3