如何水平显示数据

Question

我有四个表（员工、津贴、扣除和 Ajenda，这些是主表，当我保存员工的财务详细信息时，我将它们保存在不同的表中作为图像。 我想以水平方式显示员工详细信息和财务详细信息。 我正在使用 C# 和 SQLServer 2012 。 第一个表包含员工的主要详细信息，第二个包含员工 ID 以及津贴和其他表。

My tables

Answer 1

这是我在有人再次关闭之前的代码。我决定不使用组，因为会有很多左外连接，这会使解决方案复杂化。决定只创建一个表，然后将数据直接添加到结果表中。

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            DataTable employees = new DataTable();
            employees.Columns.Add("empID", typeof(int));
            employees.Columns.Add("emp_name", typeof(string));
            employees.Columns.Add("emp_tele", typeof(string));

            employees.Rows.Add(new object[] { 1, "David", "025896325" });
            employees.Rows.Add(new object[] { 2, "John", "856985658" });
            employees.Rows.Add(new object[] { 3, "Micheal", "654687887" });

            DataTable allowances = new DataTable();
            allowances.Columns.Add("empID", typeof(int));
            allowances.Columns.Add("allow_name", typeof(string));
            allowances.Columns.Add("allow_Amount", typeof(int));

            allowances.Rows.Add(new object[] { 1, "allow1", 100 });
            allowances.Rows.Add(new object[] { 1, "allow2", 200 });
            allowances.Rows.Add(new object[] { 1, "allow3", 300 });
            allowances.Rows.Add(new object[] { 2, "allow1", 100 });
            allowances.Rows.Add(new object[] { 2, "allow2", 200 });

            DataTable deductions = new DataTable();
            deductions.Columns.Add("empID", typeof(int));
            deductions.Columns.Add("Dedu_name", typeof(string));
            deductions.Columns.Add("Dedu_Amount", typeof(int));

            deductions.Rows.Add(new object[] { 1, "ded1", 10 });
            deductions.Rows.Add(new object[] { 1, "ded2", 5 });
            deductions.Rows.Add(new object[] { 2, "ded1", 10 });

            DataTable ajenda = new DataTable();
            ajenda.Columns.Add("empID", typeof(int));
            ajenda.Columns.Add("ajenda_name", typeof(string));
            ajenda.Columns.Add("ajenda_Amount", typeof(int));

            ajenda.Rows.Add(new object[] { 1, "aj1", 200 });
            ajenda.Rows.Add(new object[] { 1, "aj1", 200 });
            ajenda.Rows.Add(new object[] { 1, "aj2", 300 });

            DataTable results = employees.Clone();

            string[] allow_names = allowances.AsEnumerable().Select(x => x.Field<string>("allow_name")).Distinct().OrderBy(x => x).ToArray();
            foreach (string name in allow_names)
            {
                results.Columns.Add(name, typeof(string));
            }


            string[] dedu_names = deductions.AsEnumerable().Select(x => x.Field<string>("Dedu_name")).Distinct().OrderBy(x => x).ToArray();
            foreach (string name in dedu_names)
            {
                results.Columns.Add(name, typeof(string));
            }

            string[] ajenda_names = ajenda.AsEnumerable().Select(x => x.Field<string>("ajenda_name")).Distinct().OrderBy(x => x).ToArray();
            foreach (string name in ajenda_names)
            {
                results.Columns.Add(name, typeof(string));
            }

            //add employees to result table
            foreach(DataRow row in employees.AsEnumerable())
            {
                results.Rows.Add(row.ItemArray);
            }

            var groupAllownaces = allowances.AsEnumerable().GroupBy(x => x.Field<int>("empID"));
            foreach (var group in groupAllownaces)
            {
                DataRow employeeRow = results.AsEnumerable().Where(x => x.Field<int>("empID") == group.Key).First();
                foreach (DataRow row in group)
                {
                    employeeRow[row.Field<string>("allow_name")] = row.Field<int>("allow_Amount");
                }
            }

            var groupDeductions = deductions.AsEnumerable().GroupBy(x => x.Field<int>("empID"));
            foreach (var group in groupDeductions)
            {
                DataRow employeeRow = results.AsEnumerable().Where(x => x.Field<int>("empID") == group.Key).First();
                foreach (DataRow row in group)
                {
                    employeeRow[row.Field<string>("Dedu_name")] = row.Field<int>("Dedu_Amount");
                }
            }

            var groupAjenda = ajenda.AsEnumerable().GroupBy(x => x.Field<int>("empID"));
            foreach (var group in groupAjenda)
            {
                DataRow employeeRow = results.AsEnumerable().Where(x => x.Field<int>("empID") == group.Key).First();
                foreach (DataRow row in group)
                {
                    employeeRow[row.Field<string>("ajenda_name")] = row.Field<int>("ajenda_Amount");
                 }
            }
        }
    }
}