From af5dd388cc1d5f58ac2f010730a301e0c7d7e6e6 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Tue, 7 Dec 2010 15:11:22 -0800
Subject: just return a blank string if the base from is not a join

---
 lib/arel/visitors/join_sql.rb | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'lib/arel')

diff --git a/lib/arel/visitors/join_sql.rb b/lib/arel/visitors/join_sql.rb
index 7ba2bde540..427f2bb726 100644
--- a/lib/arel/visitors/join_sql.rb
+++ b/lib/arel/visitors/join_sql.rb
@@ -12,7 +12,8 @@ module Arel
       private
 
       def visit_Arel_Nodes_SelectCore o
-        [o.froms].grep(Nodes::Join).map { |x| visit x }.join ', '
+        return '' unless Nodes::Join === o.from
+        visit o.from
       end
 
       def visit_Arel_Nodes_StringJoin o
-- 
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