Use CONCAT_NULL_YIELDS_NULL for all TinyTDS connections. Fixes #262. Thanks @noel.

Author: metaskills

CHANGELOG

@@ -1,6 +1,8 @@
 
 * 3.2.13 *
 
+* Use CONCAT_NULL_YIELDS_NULL for all TinyTDS connections. Fixes #262. Thanks @noel.
+* Fix for Azure SQL. Fixed #263. Thanks @eklipse2k8.
 * Drop shoulda and use minitest-spec-rails!!!
 * Test TinyTDS 0.6.0.
 * Fixed the unit tests due to changes in ActiveRecord that removes blank config values.

lib/active_record/connection_adapters/sqlserver_adapter.rb

@@ -438,13 +438,13 @@ def connect
                             client.execute("SET ANSI_PADDING ON").do
                             client.execute("SET QUOTED_IDENTIFIER ON")
                             client.execute("SET ANSI_WARNINGS ON").do
-                            client.execute("SET CONCAT_NULL_YIELDS_NULL ON").do
                           else
                             client.execute("SET ANSI_DEFAULTS ON").do
                             client.execute("SET CURSOR_CLOSE_ON_COMMIT OFF").do
                             client.execute("SET IMPLICIT_TRANSACTIONS OFF").do
                           end
                           client.execute("SET TEXTSIZE 2147483647").do
+                          client.execute("SET CONCAT_NULL_YIELDS_NULL ON").do
                         end
                       when :odbc
                         if config[:dsn].include?(';')