Question

我正在尝试根据一个字符串列表获取一组Master-Detail记录，这些字符串需要与每个主节点的每个细节的参考编号列匹配。因此，例如，我将此作为字符串列表：

string[] listToFilterFor = new [] { "2729113", "2732623", "2734483", "2735355", "2752260" };

安装DAL功能进行过滤：

public async Task<IQueryable<BILL_INFO>> GetBills(IDictionary<string, object> filterCriteria, string operationGuid)
{
    var callerInfo = Shared.CommonAcross.Helper.GetCaller();
    Logger.Info($"{LayerName} -> {callerInfo.MethodName} -> Started");

    try
    {
        IList<BILL_INFO> intermResult;

        using (var context = new FinanceConnection())
        {
            var result = context.BILL_INFOS
                                .Include(i => i.MASTER_ACCOUNT)
                                .Include(i => i.MASTER_PAY_MODE)
                                .Include(i => i.MASTER_BANK)
                                .Include(i => i.MASTER_CREDIT_CARD_TYPE)
                                .Include(i => i.MASTER_EDIRHAM_CARD_TYPE);

            if (filterCriteria != null && filterCriteria.Any())
            {
                #region Keys

                var billNumberKey = "BillNumber";
                var cashierNumberKey = "AssignedCashiers";
                var payModeIdKey = "PayModeId";
                var depositIdKey = "DepositId";
                var dateFromKey = "DateFrom";
                var dateToKey = "DateTo";
                var accountsKey = "Account";
                var accountGroupsKey = "AccountGroups";
                var referenceNumber = "ReferenceNumber";
                var referenceNumbers = "ReferenceNumbers";

                #endregion

                if (filterCriteria.ContainsKey(billNumberKey) && filterCriteria.TryGetValue(billNumberKey, out var actualFilterBillNumber))
                    result = result.Where(where => where.BILL_NUMBER.Contains(actualFilterBillNumber.ToString()));

                if (filterCriteria.ContainsKey(referenceNumbers) && filterCriteria.TryGetValue(referenceNumbers, out var actualReferenceNumbers))
                {
                    result = result.Include(i => i.BILL_INFO_DETAIL);
                    result = result.Where(where => where.BILL_INFO_DETAIL.Any(p=>p.));
                }

                #region From/To Dates

                DateTime? tempDateFrom = null;
                DateTime? tempDateTo = null;

                if (filterCriteria.ContainsKey(dateFromKey) && filterCriteria.TryGetValue(dateFromKey, out var actualDateFrom))
                {
                    tempDateFrom = ((DateTime?)actualDateFrom)?.Date;
                }

                if (filterCriteria.ContainsKey(dateToKey) && filterCriteria.TryGetValue(dateToKey, out var actualDateTo))
                {
                    tempDateTo = ((DateTime?)actualDateTo)?.Date.AddDays(1).AddMilliseconds(-1);
                }

                if (tempDateFrom.HasValue && tempDateTo.HasValue)
                {
                    result = result.Where(where => where.BILL_DATE != null && where.BILL_DATE >= tempDateFrom && where.BILL_DATE <= tempDateTo);
                }
                else if (tempDateFrom.HasValue && !tempDateTo.HasValue)
                {
                    result = result.Where(where => where.BILL_DATE != null && where.BILL_DATE >= tempDateFrom && where.BILL_DATE <= tempDateFrom);
                }
                else if (!tempDateFrom.HasValue && tempDateTo.HasValue)
                {
                    result = result.Where(where => where.BILL_DATE != null && where.BILL_DATE >= tempDateTo.Value.Date && where.BILL_DATE <= tempDateTo);
                }

                #endregion
            }

            intermResult = await result.OrderByDescending(o => o.BILL_DATE).Take(10000).ToListAsync();
        }

        Logger.Info($"{LayerName} -> {callerInfo.MethodName} -> Returning");
        return intermResult.AsQueryable();
    }
    catch (Exception exp)
    {
        Logger.Error($"{LayerName} -> {callerInfo.MethodName} -> Exception [{exp.Message}]", exp);
        throw;
    }
}

任务：

我需要浏览主记录（BILL_INFOS）并查看每个主人的详细记录（BILL_INFO_DETAILS）并尝试将 AnyOf listToFilterFor与BILL_INFO_DETAIL.REFERENCE_NUMBER匹配< / p>

Answer 1

如果我理解这是正确的，如果我没有，我道歉。你能使用包含声明吗？

BILL_INFO.where（x =＆gt; listToFilterFor.Includes（x.BILL_INFO_DETAILS.REFERENCE_NUMBER）

Answer 2

我最终对此进行了排序，因为这里涉及复合主键，并且不可能使用正确的元组。我通过这个问题找到了解决方案：Cannot create a relation between two tables with three primary keys

我能够提取一个子集。

使用Where谓词过滤detail.List与另一个列表

2 个答案: