從多個表中獲取記錄 SQL 帶有求和和抽象的查詢 Function

Question

我有 5 張桌子

Table 1 Accounts (as T1)
accountID Title
Table 2 Arrival Master (as T2)
ArrivalID ArrivalDate RefDate PartyID
Table 3 Arrival Details (as T3)
ArrivalID itemid Itemqty ItemRate ItemAmount
Table 4 Return Master (as T4)
ArrivalID ArrivalDate RefDate PartyID
Table 5 Return Details (AS T5)
ArrivalID ItemID Itemqty ItemRate ItemAmount

在 T2 和 T4 中，ArrivalID 是主鍵。

我想獲得摘要報告，我必須在其中獲得這些值

.
.
.
.
.
t2.ArrivalID
.
t2.ArrivlaDate
.
T2.RefDate
.
T1.Title
.
Amount (Sum of T3.AmountColumn group By Arrival ID)-(Sum of T5.AmountColumn Group By t4.ArrivalID and link to t2.RefDate)

Answer 1

嘗試以下操作：

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

namespace ConsoleApplication133
{
    class Program
    {
        static void Main(string[] args)
        {
            DataTable Accounts = new DataTable();
            Accounts.Columns.Add("Account ID", typeof(int));
            Accounts.Columns.Add("Title", typeof(string));

            Accounts.Rows.Add(new object[] { 225, "Mushtaq" });
            Accounts.Rows.Add(new object[] { 2211, "Akram" });

            DataTable Arrival_Master = new DataTable();
            Arrival_Master.Columns.Add("Arrival ID", typeof(int));
            Arrival_Master.Columns.Add("Adate", typeof(DateTime));
            Arrival_Master.Columns.Add("RefDate", typeof(DateTime));
            Arrival_Master.Columns.Add("Party ID", typeof(int));

            Arrival_Master.Rows.Add(new object[] { 1, DateTime.Parse("9/25/2019"), DateTime.Parse("9/25/2019"), 225 });
            Arrival_Master.Rows.Add(new object[] { 2, DateTime.Parse("9/26/2019"), DateTime.Parse("9/26/2019"), 2211 });

            DataTable Arrival_Details = new DataTable();
            Arrival_Details.Columns.Add("Arrival ID", typeof(int));
            Arrival_Details.Columns.Add("ItemId", typeof(int));
            Arrival_Details.Columns.Add("ItemQty", typeof(int));
            Arrival_Details.Columns.Add("Amount", typeof(decimal));

            Arrival_Details.Rows.Add(new object[] { 1, 1, 15, 500 });
            Arrival_Details.Rows.Add(new object[] { 1, 2, 20, 400 });
            Arrival_Details.Rows.Add(new object[] { 1, 5, 12, 750 });
            Arrival_Details.Rows.Add(new object[] { 2, 7, 15, 150 });
            Arrival_Details.Rows.Add(new object[] { 2, 5, 17, 180 });

            DataTable Return_Master = new DataTable();
            Return_Master.Columns.Add("ReturnID", typeof(int));
            Return_Master.Columns.Add("Date", typeof(DateTime));
            Return_Master.Columns.Add("RefDate", typeof(DateTime));
            Return_Master.Columns.Add("Party ID", typeof(int));

            Return_Master.Rows.Add(new object[] { 1, DateTime.Parse("9/25/2019"), DateTime.Parse("9/25/2019"), 225 });
            Return_Master.Rows.Add(new object[] { 2, DateTime.Parse("9/26/2019"), DateTime.Parse("9/26/2019"), 2211 });

            DataTable Return_Details = new DataTable();
            Return_Details.Columns.Add("RetID", typeof(int));
            Return_Details.Columns.Add("ItemId", typeof(int));
            Return_Details.Columns.Add("ItemQty", typeof(int));
            Return_Details.Columns.Add("Amount", typeof(decimal));

            Return_Details.Rows.Add(new object[] { 1, 1, 15, 50 });
            Return_Details.Rows.Add(new object[] { 1, 2, 20, 40 });
            Return_Details.Rows.Add(new object[] { 2, 7, 15, 90 });
            Return_Details.Rows.Add(new object[] { 2, 5, 17, 80 });

            DataTable Summary = new DataTable();
            Summary.Columns.Add("Adate", typeof(DateTime));
            Summary.Columns.Add("RefDate", typeof(DateTime));
            Summary.Columns.Add("ArrivalID", typeof(int));
            Summary.Columns.Add("Title", typeof(string));
            Summary.Columns.Add("ArrivalAmount", typeof(decimal));
            Summary.Columns.Add("Return Amount", typeof(decimal));
            Summary.Columns.Add("Net Amount", typeof(decimal));

            var joins = (from acc in Accounts.AsEnumerable()
                         join am in Arrival_Master.AsEnumerable() on acc.Field<int>("Account ID") equals am.Field<int>("Party ID")
                         join ad in Arrival_Details.AsEnumerable().GroupBy(x => x.Field<int>("Arrival ID")) on am.Field<int>("Arrival ID") equals ad.Key
                         join rm in Return_Master.AsEnumerable() on acc.Field<int>("Account ID") equals rm.Field<int>("Party ID")
                         join rd in Return_Details.AsEnumerable().GroupBy(x => x.Field<int>("REtID")) on rm.Field<int>("ReturnID") equals rd.Key
                         select new { account = acc, arrivalMaster = am, arrivalDetails = ad, returnMaster = rm, returnDetails = rd }).ToList();

            var groups = joins.GroupBy(x => new { 
                account = x.account.Field<int>("Account ID"), 
                arrivalDate = x.arrivalMaster.Field<DateTime>("Adate"), 
                refDate = x.arrivalMaster.Field<DateTime>("RefDate") }).ToList();


            foreach (var group in groups)
            {
                DataRow newRow = Summary.Rows.Add();
                newRow["Adate"] = group.Key.arrivalDate;
                newRow["RefDate"] = group.Key.refDate;
                newRow["ArrivalID"] = group.FirstOrDefault().arrivalMaster.Field<int>("Arrival ID");
                newRow["Title"] = group.FirstOrDefault().account.Field<string>("Title");
                newRow["ArrivalAmount"] = group.Sum(x => x.arrivalDetails.Sum(y => y.Field<decimal>("Amount")));
                newRow["Return Amount"] = group.Sum(x => x.returnDetails.Sum(y => y.Field<decimal>("Amount")));
                newRow["Net Amount"] = group.Sum(x => x.arrivalDetails.Sum(y => y.Field<decimal>("Amount"))) -
                   group.Sum(x => x.returnDetails.Sum(y => y.Field<decimal>("Amount")));
            }

            DataTable newArrivalTable = new DataTable();
            newArrivalTable.Columns.Add("Arrival_Date", typeof(DateTime));
            newArrivalTable.Columns.Add("Arrival_Ref_Date", typeof(DateTime));
            newArrivalTable.Columns.Add("Arrival_ID", typeof(int));
            newArrivalTable.Columns.Add("Party_Title", typeof(string));
            newArrivalTable.Columns.Add("Amount", typeof(decimal));

            var joinArrivals = (from acc in Accounts.AsEnumerable()
                join am in Arrival_Master.AsEnumerable() on acc.Field<int>("Account ID") equals am.Field<int>("Party ID")
                join ad in Arrival_Details.AsEnumerable().GroupBy(x => x.Field<int>("Arrival ID")) on am.Field<int>("Arrival ID") equals ad.Key
                select new { account = acc, arrivalMaster = am, arrivalDetails = ad}).ToList();


            foreach (var joinArrival in joinArrivals)
            {
                newArrivalTable.Rows.Add(new object[] {
                    joinArrival.arrivalMaster.Field<DateTime>("Adate"),
                    joinArrival.arrivalMaster.Field<DateTime>("RefDate"),
                    joinArrival.account.Field<int>("Account ID"),
                    joinArrival.account.Field<string>("Title"),
                    joinArrival.arrivalDetails.Sum(x => x.Field<decimal>("Amount"))
                });

            }

            DataTable newReturnTable = new DataTable();
            newReturnTable.Columns.Add("Return_Date", typeof(DateTime));
            newReturnTable.Columns.Add("Return_Ref_Date", typeof(DateTime));
            newReturnTable.Columns.Add("Return_ID", typeof(int));
            newReturnTable.Columns.Add("Party_Title", typeof(string));
            newReturnTable.Columns.Add("Return_Amount", typeof(decimal));


            var joinReturns = (from acc in Accounts.AsEnumerable()
                         join rm in Return_Master.AsEnumerable() on acc.Field<int>("Account ID") equals rm.Field<int>("Party ID")
                         join rd in Return_Details.AsEnumerable().GroupBy(x => x.Field<int>("REtID")) on rm.Field<int>("ReturnID") equals rd.Key
                         select new { account = acc, returnMaster = rm, returnDetails = rd }).ToList();


            foreach (var joinReturn in joinReturns)
            {
                newReturnTable.Rows.Add(new object[] {
                    joinReturn.returnMaster.Field<DateTime>("Date"),
                    joinReturn.returnMaster.Field<DateTime>("RefDate"),
                    joinReturn.account.Field<int>("Account ID"),
                    joinReturn.account.Field<string>("Title"),
                    joinReturn.returnDetails.Sum(x => x.Field<decimal>("Amount"))
                });

            }

            var combinedJoins = (from at in newArrivalTable.AsEnumerable()
                                join rt in newReturnTable.AsEnumerable() on at.Field<int>("Arrival_ID") equals rt.Field<int>("Return_ID")
                                where at.Field<DateTime>("Arrival_Ref_Date") == rt.Field<DateTime>("Return_Ref_Date")
                                select new { arrivals = at, returns = rt }).ToList();

            DataTable combinedTable = new DataTable();
            combinedTable.Columns.Add("Arrival_ID", typeof(int));
            combinedTable.Columns.Add("Party_Title", typeof(string));
            combinedTable.Columns.Add("Arrival_Date", typeof(DateTime));
            combinedTable.Columns.Add("Arrival_Ref_Date", typeof(DateTime));
            combinedTable.Columns.Add("Amount", typeof(decimal));
            combinedTable.Columns.Add("Return_Date", typeof(DateTime));
            combinedTable.Columns.Add("Return_Ref_Date", typeof(DateTime));
            combinedTable.Columns.Add("Return_ID", typeof(int));
            combinedTable.Columns.Add("Return_Amount", typeof(decimal));

            foreach (var combinedJoin in combinedJoins)
            {
                combinedTable.Rows.Add(new object[] {
                    combinedJoin.arrivals.Field<int>("Arrival_Id"),
                    combinedJoin.arrivals.Field<string>("Party_Title"),
                    combinedJoin.arrivals.Field<DateTime>("Arrival_Date"),
                    combinedJoin.arrivals.Field<DateTime>("Arrival_Ref_Date"),
                    combinedJoin.arrivals.Field<decimal>("Amount"),
                    combinedJoin.returns.Field<DateTime>("Return_Date"),
                    combinedJoin.returns.Field<DateTime>("Return_Ref_Date"),
                    combinedJoin.returns.Field<int>("Return_ID"),
                    combinedJoin.returns.Field<decimal>("Return_Amount")
                });

            }



        }
    }

}