最近 6 笔付款

Question

我需要从仅包含以下内容的架构中获取最后六笔付款

贡献 ID 截止日期 金额

付款跨越 7 年，我只需要获得最近的六笔付款，我认为这会按照我的 sql 完成

SELECT TOP 6 [ID]
  ,[customerInfo]
  ,[IVACODE]
  ,[Contribution]
  ,[DUE_DATE]
  ,[isActive]
  ,[isDeleted]
FROM [portal].[dbo].[tblPortalContributionSchedule]
where customerInfo='01F6B68B-6FC2-4F9D-B586-6934B8D6C979'
and DUE_DATE <='2016/09/26' 
ORDER BY DUE_DATE DESC

Linq 版本

List<tblPortalContributionSchedule> _contributions 
    = portalEntities.tblPortalContributionSchedules
            .Where(a => a.customerInfo == _customerId 
                        && a.isDeleted == false 
                        && a.DUE_DATE <=Convert.ToDateTime("2016/09/26"))
            .Take(6)
            .OrderByDescending(o => o.DUE_DATE)
            .ToList();

foreach (var contribution in _contributions)
{

            AllPayments.Add(new Payments(contribution.ID, Convert.ToDecimal(contribution.Contribution), Convert.ToDateTime(contribution.DUE_DATE), false));

}

但它不会产生与以下相同的结果

对不起，我需要 linq 中的答案，我不需要的是正确的方法，我得到的比预期的要少

编辑 1 这是我到目前为止的查询，但我仍然没有得到与我的 sql 脚本相同的结果

 List<tblPortalContributionSchedule> _contributions = 
portalEntities.tblPortalContributionSchedules.Where(a => a.customerInfo == 
_customerId && a.isDeleted == false && a.DUE_DATE 
<=Convert.ToDateTime("2016/09/26")).OrderByDescending(o => 
o.DUE_DATE).Take(6).ToList();

编辑 2
展示我在视频中展示的代码

    public List<Payments> getAllPayments(Guid _customerId)

    {
        List<Payments> AllPayments = new List<Payments>();

        List<tblPortalPayment> _payments = portalEntities.tblPortalPayments.Where(a => a.CustomerId == _customerId && a.isDeleted == false).ToList();

        foreach (var payment in _payments)
        {
            AllPayments.Add(new Payments(payment.id, Convert.ToDecimal(payment.paymentDue), Convert.ToDateTime(payment.paymentDate), Convert.ToBoolean(payment.isinArrears)));

        }

  List<tblPortalContributionSchedule> _contributions = portalEntities.tblPortalContributionSchedules.Where(a => a.customerInfo == _customerId && a.isDeleted == false && a.DUE_DATE<= Convert.ToDateTime("2016/09/26")).OrderByDescending(o => o.DUE_DATE).Take(6).ToList();
        foreach (var contribution in _contributions)
        {

            AllPayments.Add(new Payments(contribution.ID, Convert.ToDecimal(contribution.Contribution), Convert.ToDateTime(contribution.DUE_DATE), false));

        }


        var result = AllPayments.OrderByDescending(o => o.paymentDate).ToList(); 

        return AllPayments.OrderByDescending(o => o.paymentDate).ToList();

    }      

Answer 1

您可以如下图所示试一试，然后告诉我们结果。

var dueDateFilter = new DateTime(2016, 09, 26);

List<tblPortalContributionSchedule> _contributions = 
    portalEntities.tblPortalContributionSchedules
        .Where(a => a.customerInfo == _customerId 
            && a.isDeleted == false 
            && a.DUE_DATE <= dueDateFilter)
        .OrderByDescending(o => o.DUE_DATE)
        .Take(6)
        .ToList();

Answer 2

尝试使用此查询

SELECT [ID],
 [customerInfo],
 [IVACODE],
 [Contribution],
 [DUE_DATE],
 [isActive],
 [isDeleted]
 FROM [portal].[dbo].[tblPortalContributionSchedule]
 where customerInfo='01F6B68B-6FC2-4F9D-B586-6934B8D6C979'
 and ROWNUM <= 6
 ORDER BY DUE_DATE DESC