Update SQLServer2008Platform.php

Added support of  maps a Doctrine datetimetz type to a MS SQL SERVER type datetimeoffset(6)

lib/Doctrine/DBAL/Platforms/SQLServer2008Platform.php

@@ -53,6 +53,14 @@ class SQLServer2008Platform extends SQLServer2005Platform
         return 'TIME(0)';
     }
     
+    /**
+     * {@inheritDoc}
+     */
+    public function getDateTimeTzTypeDeclarationSQL(array $fieldDeclaration)
+    {
+        return 'datetimeoffset(6)';
+    }
+
     /**
      * {@inheritDoc}
      */