From c3b517178429296a329c6bfd4ddad855b998af2d Mon Sep 17 00:00:00 2001
From: Noel Gomez <noel_gomez@yahoo.com>
Date: Wed, 3 Apr 2013 14:30:50 -0700
Subject: [PATCH] Add CONCAT_NULL_YIELDS_NULL as per
 https://github.com/rails-sqlserver/tiny_tds/issues/112

---
 lib/active_record/connection_adapters/sqlserver_adapter.rb | 1 +
 1 file changed, 1 insertion(+)
 mode change 100644 => 100755 lib/active_record/connection_adapters/sqlserver_adapter.rb

diff --git a/lib/active_record/connection_adapters/sqlserver_adapter.rb b/lib/active_record/connection_adapters/sqlserver_adapter.rb
old mode 100644
new mode 100755
index fe48a8c64..beb9ac81b
--- a/lib/active_record/connection_adapters/sqlserver_adapter.rb
+++ b/lib/active_record/connection_adapters/sqlserver_adapter.rb
@@ -437,6 +437,7 @@ def connect
                             client.execute("SET ANSI_DEFAULTS ON").do
                             client.execute("SET CURSOR_CLOSE_ON_COMMIT OFF").do
                             client.execute("SET IMPLICIT_TRANSACTIONS OFF").do
+                            client.execute("SET CONCAT_NULL_YIELDS_NULL ON").do
                           end
                           client.execute("SET TEXTSIZE 2147483647").do
                         end