如何使用聚合SQL作为LINQ查询最优雅地表达左连接

var leftJoinQuery = from c in db.Customers
                    join o in db.Orders on c.CustomerID equals o.CustomerID into customerOrders
                    from co in customerOrders.DefaultIfEmpty()
                    select new { CustomerID = c.CustomerID, CustomerName = c.CustomerName, OrderID = (int?)co.OrderID, OrderDate = co.OrderDate };

foreach (var item in leftJoinQuery)
{
    Console.WriteLine("CustomerID: {0}, CustomerName: {1}, OrderID: {2}, OrderDate: {3}", item.CustomerID, item.CustomerName, item.OrderID, item.OrderDate);
}