vb.net - 如何在实体对象的查询表达式中使用“不同”

Question

我正在向实体对象编写查询，是否可以在列上使用 distinct ？以下是我的查询

  query = From r In objEntity.W_PDD
           Join p In objEntity.W_PER
           On r.PER_NO Equals p.PER_NO
            Where p.RECEIVED_DATE = DateTime.Today
            Order By r.PER_NO Select r