C＃每月数据表季度

时间：2016-12-07 16:35:11

标签： c#

我目前有一个DataTable，它在monthly view中包含我需要的数据。我想要做的是将这些数据分组到季度视图中，分组在ActivationYear，ActivationQuarter，BranchYear和BranchQuarter上。

我需要来自AmountFinanced和CurrentBalance的最新（季度的最后一个完整月份）值。但是，我需要本季度每个月付款的总和。

以下是我每月的例子：

ActivationDate  |  CurrentBranchDate  |  AmountFinanced  | Payments  | CurrentBalance
1/1/16          |  1/30/16            |  $10,000         |  $100     |  $9,800
1/1/16          |  2/29/16            |  $10,000         |  $0       |  $9,900
1/1/16*         |  3/31/16*           |  $10,000*        |  $2,000*  |  $7,800*
1/1/16*         |  4/30/16*           |  $10,000*        |  $1,000*  |  $6,800*
2/1/16          |  2/29/16            |  $5,000          |  $0       |  $5,200
2/1/16*         |  3/31/16*           |  $5,000*         |  $500*    |  $4,700*
2/1/16*         |  4/30/16*           |  $5,000*         |  $200*    |  $4,500*

以下是每季度分组时所需的结果（上面带*的行是我用于CurrentBalance的行）：

ActivationY | ActivationQ | BranchY | BranchQ | AmountFinanced | Payments | CurrentBalance
2016        | 1           | 2016    | 1       | $15,000        | $2,500   | $12,500
2016        | 1           | 2016    | 2       | $15,000        | $1,200   | $11,300

我已经尝试循环遍历月表，但我似乎得到重复和不正确的金额（例如：添加所有金额的资金列给我40,000美元资金，当它应该只有15,000美元）。

以下是基于jdweng答案的更新代码：

var testResults = monthlyTable.AsEnumerable()
                        .GroupBy(x => (x.Field<DateTime>("ActivationDate").Month - 1) / 3)
                        .Select(x => new
                        {
                            ActivationYear = x.FirstOrDefault().Field<DateTime>("ActivationDate").Year,
                            ActivationQuarter = ((x.FirstOrDefault().Field<DateTime>("ActivationDate").Month - 1) / 3) + 1,
                            BranchYear = x.FirstOrDefault().Field<DateTime>("CurrentBranchDate").Year,
                            BranchQuarter = ((x.FirstOrDefault().Field<DateTime>("CurrentBranchDate").Month - 1) / 3) + 1,
                            AmountFinanced = x.OrderByDescending(y => y.Field<DateTime>("CurrentBranchDate")).Select(y => y.Field<decimal>("AmountFinanced")).FirstOrDefault(),
                            CurrentBalance = x.OrderByDescending(y => y.Field<DateTime>("CurrentBranchDate")).Select(y => y.Field<decimal>("CurrentBalance")).FirstOrDefault(),
                            Sum_of_Payments = x.Sum(y => y.Field<decimal?>("Payments"))
                        }).ToList();

我仍然收到错误的AmountFinanced和CurrentBalance。我是否也需要在CurrentBranchDate上进行分组？

@jdweng，这是我正在使用的数据：

dt.Rows.Add(new object[] { DateTime.Parse("11/01/2016"), DateTime.Parse("11/30/2017"), 57000, 0, 53639.4 });
dt.Rows.Add(new object[] { DateTime.Parse("01/01/2017"), DateTime.Parse("11/30/2017"), 52000, 0, 52000 });
dt.Rows.Add(new object[] { DateTime.Parse("03/01/2017"), DateTime.Parse("11/30/2017"), 28000, 0, 27160.82 });
dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("04/30/2017"), 77200, 0, 76190.96 });
dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("05/31/2017"), 77200, 0, 76190.96 });
dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("06/30/2017"), 77200, 0, 76190.96 });
dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("06/30/2017"), 98450, 0, 98450 });
dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("07/31/2017"), 77200, 0, 76190.96 });
dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("08/31/2017"), 77200, 0, 76190.96 });
dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("09/30/2017"), 77200, 0, 76190.96 });
dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("07/31/2017"), 98450, 0, 98450 });
dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("08/31/2017"), 98450, 0, 98450 });
dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("09/30/2017"), 98450, 0, 98450 });
dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("10/31/2017"), 77200, 0, 76190.96 });
dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("11/30/2017"), 77200, -1947.7, 74616.01 });
dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("10/31/2017"), 98450, 0, 98450 });
dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("11/30/2017"), 98450, 0, 98450 });
dt.Rows.Add(new object[] { DateTime.Parse("08/01/2017"), DateTime.Parse("08/31/2017"), 20000, 0, 20000 });
dt.Rows.Add(new object[] { DateTime.Parse("08/01/2017"), DateTime.Parse("09/30/2017"), 20000, 0, 20000 });
dt.Rows.Add(new object[] { DateTime.Parse("08/01/2017"), DateTime.Parse("10/31/2017"), 20000, -1631.58, 18540.78 });
dt.Rows.Add(new object[] { DateTime.Parse("08/01/2017"), DateTime.Parse("11/30/2017"), 20000, 0, 18540.78 });
dt.Rows.Add(new object[] { DateTime.Parse("10/01/2017"), DateTime.Parse("10/31/2017"), 25000, -509.55, 24490.45 });
dt.Rows.Add(new object[] { DateTime.Parse("10/01/2017"), DateTime.Parse("11/30/2017"), 25000, 0, 24490.45 });

这是我正在调用的修改项目：

var quarterResults = monthlyTable.AsEnumerable()
                    //.GroupBy(x => (x.Field<DateTime>("ActivationDate").Month - 1) / 3)
                    //.GroupBy(x => new { ActivationMonth = (x.Field<DateTime>("ActivationDate").Month - 1) / 3, ActivationYear = x.Field<DateTime>("ActivationDate").Year })
                    .GroupBy(x => new { ActivationQuarter = (x.Field<DateTime>("ActivationDate").Month - 1) / 3, ActivationYear = x.Field<DateTime>("ActivationDate").Year, BranchQuarter = (x.Field<DateTime>("CurrentBranchDate").Month - 1) / 3, BranchYear = x.Field<DateTime>("CurrentBranchDate").Year })
                    .Select(x => new[]
                    {
                        x.FirstOrDefault().Field<DateTime>("ActivationDate").Year,
                        ((x.FirstOrDefault().Field<DateTime>("ActivationDate").Month - 1) / 3) + 1,
                        x.FirstOrDefault().Field<DateTime>("CurrentBranchDate").Year,
                        ((x.FirstOrDefault().Field<DateTime>("CurrentBranchDate").Month - 1) / 3) + 1,
                        x.OrderByDescending(y => y.Field<DateTime>("CurrentBranchDate")).Select(y => y.Field<decimal>("AmountFinanced")).FirstOrDefault(),
                        x.OrderByDescending(y => y.Field<DateTime>("CurrentBranchDate")).Select(y => y.Field<decimal>("CurrentBalance")).FirstOrDefault(),
                        x.OrderByDescending(y => y.Field<DateTime>("CurrentBranchDate")).Select(y => y.Field<decimal>
                        x.Sum(y => y.Field<decimal?>("Payments"))
                    }).ToArray();

如果你查看它为ActivationYear 2017，ActivationQuarter 2，BranchYear 2017，BranchQuarter 2生成的数据，它给我77,200作为资助金额，它应该给我175,650（77,200 + 98,450）。

1 个答案:

答案 0 :(得分：0)

试试这个

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;


namespace ConsoleApplication31
{
    class Program
    {

        static void Main(string[] args)
        {
            DataTable dt = new DataTable();

            dt.Columns.Add("ActivationDate", typeof(DateTime));
            dt.Columns.Add("CurrentBranchDate", typeof(DateTime));
            dt.Columns.Add("AmountFinanced", typeof(decimal));
            dt.Columns.Add("Payments", typeof(decimal));
            dt.Columns.Add("CurrentBalance", typeof(decimal));

            dt.Rows.Add(new object[] { DateTime.Parse("11/01/2016"), DateTime.Parse("11/30/2017"), 57000, 0, 53639.4 });
            dt.Rows.Add(new object[] { DateTime.Parse("01/01/2017"), DateTime.Parse("11/30/2017"), 52000, 0, 52000 });
            dt.Rows.Add(new object[] { DateTime.Parse("03/01/2017"), DateTime.Parse("11/30/2017"), 28000, 0, 27160.82 });
            dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("04/30/2017"), 77200, 0, 76190.96 });
            dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("05/31/2017"), 77200, 0, 76190.96 });
            dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("06/30/2017"), 77200, 0, 76190.96 });
            dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("06/30/2017"), 98450, 0, 98450 });
            dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("07/31/2017"), 77200, 0, 76190.96 });
            dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("08/31/2017"), 77200, 0, 76190.96 });
            dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("09/30/2017"), 77200, 0, 76190.96 });
            dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("07/31/2017"), 98450, 0, 98450 });
            dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("08/31/2017"), 98450, 0, 98450 });
            dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("09/30/2017"), 98450, 0, 98450 });
            dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("10/31/2017"), 77200, 0, 76190.96 });
            dt.Rows.Add(new object[] { DateTime.Parse("04/01/2017"), DateTime.Parse("11/30/2017"), 77200, -1947.7, 74616.01 });
            dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("10/31/2017"), 98450, 0, 98450 });
            dt.Rows.Add(new object[] { DateTime.Parse("06/01/2017"), DateTime.Parse("11/30/2017"), 98450, 0, 98450 });
            dt.Rows.Add(new object[] { DateTime.Parse("08/01/2017"), DateTime.Parse("08/31/2017"), 20000, 0, 20000 });
            dt.Rows.Add(new object[] { DateTime.Parse("08/01/2017"), DateTime.Parse("09/30/2017"), 20000, 0, 20000 });
            dt.Rows.Add(new object[] { DateTime.Parse("08/01/2017"), DateTime.Parse("10/31/2017"), 20000, -1631.58, 18540.78 });
            dt.Rows.Add(new object[] { DateTime.Parse("08/01/2017"), DateTime.Parse("11/30/2017"), 20000, 0, 18540.78 });
            dt.Rows.Add(new object[] { DateTime.Parse("10/01/2017"), DateTime.Parse("10/31/2017"), 25000, -509.55, 24490.45 });
            dt.Rows.Add(new object[] { DateTime.Parse("10/01/2017"), DateTime.Parse("11/30/2017"), 25000, 0, 24490.45 });

            var quarterResults = dt.AsEnumerable()
                    .GroupBy(x => new { ActivationQuarter = (x.Field<DateTime>("ActivationDate").Month - 1) / 3, ActivationYear = x.Field<DateTime>("ActivationDate").Year })
                    .Select(x => new {
                        activationYear = x.FirstOrDefault().Field<DateTime>("ActivationDate").Year,
                        quarterResults = ((x.FirstOrDefault().Field<DateTime>("ActivationDate").Month - 1) / 3) + 1,
                        branchYear = x.FirstOrDefault().Field<DateTime>("CurrentBranchDate").Year,
                        branchQuarter = ((x.FirstOrDefault().Field<DateTime>("CurrentBranchDate").Month - 1) / 3) + 1,
                        AmountFinanced = x.GroupBy(y => new { ActivationDate = y.Field<DateTime>("ActivationDate")}).Select(z => z.OrderByDescending(a => a.Field<DateTime>("CurrentBranchDate")).Select(y => y.Field<decimal>("AmountFinanced")).FirstOrDefault()).Sum(),
                        CurrentBalance = x.OrderByDescending(y => y.Field<DateTime>("CurrentBranchDate")).Select(y => y.Field<decimal>("CurrentBalance")).FirstOrDefault(),
                        sum = x.Select(y => y.Field<decimal?>("Payments")).Sum()
                    }).ToArray();
        }
    }

}
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