數據表中行之間的C#總和

Question

我試圖根據特定列上的字符串對數據表的非特定行求和。 例如，在 row0 row1 上找到 String Test，在下面添加小計行，在 row2 上找到 String Test1，在下面添加小計行等等。當然必須有一個包含小計總和的頁腳行： 之前：

Col0 | Col1  | Col2 | Col3
xxxx | Test  | 12   | 21 
yyyy | Test  | 13   | 22
zzzz | Test1 | 14   | 23 
aaaa | Test2 | 15   | 24
bbbb | Test2 | 16   | 25 

我想要的是：

Col0 | Col1   | Col2 | Col3 ...Col6
xxxx | Test   | 12   | 21 
yyyy | Test   | 13   | 22
     |SubTotal| 25   | 43
zzzz | Test1  | 14   | 23
     |SubTotal| 14   | 23
aaaa | Test2  | 15   | 24
bbbb | Test2  | 16   | 25
     |SubTotal| 31   | 49
     | Total  | 70   | 115

到目前為止我所做的。

DataTable dTable = new DataTable();
    dTable.Columns.Add("Col0", typeof(string));
    dTable.Columns.Add("Col1", typeof(string));
    dTable.Columns.Add("Col2", typeof(decimal));
    dTable.Columns.Add("Col3", typeof(decimal));
    dTable.Columns.Add("Col4", typeof(decimal));
    dTable.Columns.Add("Col5", typeof(decimal));
    dTable.Columns.Add("Col6", typeof(decimal));

    DataTable dTable_1 = new DataTable();


    string Sql_Conn = ConfigurationManager.ConnectionStrings["Ora_ConnectionString"].ConnectionString;

    try
    {
        using (OracleConnection con = new OracleConnection(Sql_Conn))
        {
            using (OracleCommand Sql_Cmd = new OracleCommand(""))
            {
                using (OracleDataAdapter dt = new OracleDataAdapter(Sql_Cmd))
                {
                    Sql_Cmd.CommandText = "SELECT 1 ,Col0, Col1, " +
                                           " SUM(TEST04) Col2,  " +
                                           " SUM(TEST03) Col3,  " +
                                           " SUM(TEST03)+SUM(TEST04) Col4,  " +
                                           " SUM(TEST05) Col5,  " +
                                           " SUM(TEST03)+SUM(TEST04)+SUM(TEST05) Col6  " +
                                           " FROM TEST  " +
                                           " WHERE A=:A  " +
                                           " GROUP BY Col0,Col1" +
                                           " ORDER BY Col0,Col1";
                    Sql_Cmd.Connection = con;

                    Sql_Cmd.CommandType = CommandType.Text;
                    Sql_Cmd.BindByName = true;
                    Sql_Cmd.Parameters.Add(":A", OracleDbType.NVarchar2).Value = A;
                    con.Open();
                    using (OracleDataReader Rdr = Sql_Cmd.ExecuteReader())
                    {
                        decimal Total_Col2 = 0;
                        decimal Total_Col3 = 0;
                        decimal Total_Col4 = 0;
                        decimal Total_Col5 = 0;
                        decimal Total_Col6 = 0;

                        int ii = 0;
                        while (Rdr.Read())
                        {
                            DataRow dr = dTable.NewRow();
                            dr["Col0"] = Rdr.IsDBNull(1) ? "" : Rdr.GetString(1);
                            dr["Col1"] = Rdr.IsDBNull(2) ? "" : Rdr.GetString(2);
                            dr["Col2"] = Rdr.GetDecimal(3);
                            dr["Col3"] = Rdr.GetDecimal(4);
                            dr["Col4"] = Rdr.GetDecimal(5);
                            dr["Col5"] = Rdr.GetDecimal(6);
                            dr["Col6"] = Rdr.GetDecimal(7);                               

                            if (dTable.Rows.Count == 0)
                            {
                                Total_Col2 = Convert.ToDecimal(dr["Col2"]);
                                Total_Col3 = Convert.ToDecimal(dr["Col3"]);
                                Total_Col4 = Convert.ToDecimal(dr["Col4"]);
                                Total_Col5 = Convert.ToDecimal(dr["Col5"]);
                                Total_Col6 = Convert.ToDecimal(dr["Col6"]);
                            }
                            else if (dTable.Rows.Count > 0)
                            {
                                int current = dTable.Rows.Count;
                                int previous = dTable.Rows.Count - 1;
                                if (dr["Col1"].ToString() == dTable.Rows[previous]["Col1"].ToString())
                                {
                                    Total_Col2 = Total_Col2 + Convert.ToDecimal(dTable.Rows[previous]["Col2"]);
                                    Total_Col3 = Total_Col3 + Convert.ToDecimal(dTable.Rows[previous]["Col3"]);
                                    Total_Col4 = Total_Col4 + Convert.ToDecimal(dTable.Rows[previous]["Col4"]);
                                    Total_Col5 = Total_Col5 + Convert.ToDecimal(dTable.Rows[previous]["Col5"]);
                                    Total_Col6 = Total_Col6 + Convert.ToDecimal(dTable.Rows[previous]["Col6"]);
                                    ii = ii + 1;
                                }
                                else
                                {

                                        if (dTable.Rows.Count != 1)
                                        {
                                            DataRow Dr_New = dTable.NewRow();
                                            Dr_New["Col0"] = "";
                                            Dr_New["Col1"] = "Subtotal";
                                            Dr_New["Col2"] = Total_Col2 + Convert.ToDecimal(dTable.Rows[previous]["Col2"]); 
                                            Dr_New["Col3"] = Total_Col3 + Convert.ToDecimal(dTable.Rows[previous]["Col3"]); 
                                            Dr_New["Col4"] = Total_Col4 + Convert.ToDecimal(dTable.Rows[previous]["Col4"]);
                                            Dr_New["Col5"] = Total_Col5 + Convert.ToDecimal(dTable.Rows[previous]["Col5"]);
                                            Dr_New["Col6"] = Total_Col6 + Convert.ToDecimal(dTable.Rows[previous]["Col6"]);
                                            dTable.Rows.Add(Dr_New);
                                            dTable.Rows.Add();
                                            Total_Col2 = 0;
                                            Total_Col3 = 0;
                                            Total_Col4 = 0;
                                            Total_Col5 = 0;
                                            Total_Col6 = 0;
                                            ii = 0;
                                        }
                                        else if (dTable.Rows.Count == 1)
                                        {
                                            DataRow Dr_New = dTable.NewRow();
                                            Dr_New["Col0"] = "-";
                                            Dr_New["Col1"] = "Subtotal";
                                            Dr_New["Col2"] = Total_Col2;
                                            Dr_New["Col3"] = Total_Col3;
                                            Dr_New["Col4"] = Total_Col4;
                                            Dr_New["Col5"] = Total_Col5;
                                            Dr_New["Col6"] = Total_Col6;
                                            dTable.Rows.Add(Dr_New);
                                            dTable.Rows.Add();
                                            Total_Col2 = 0;
                                            Total_Col3 = 0;
                                            Total_Col4 = 0;
                                            Total_Col5 = 0;
                                            Total_Col6 = 0;
                                            ii = 0;
                                        }
                                }
                            }
                            dTable.Rows.Add(dr);
                        }

                        GridView1.DataSource = dTable;
                        GridView1.DataBind();

                        decimal total_Col2 = dTable.AsEnumerable().Sum(row => row.Field<decimal?>("Col2") ?? 0);
                        decimal total_Col3 = dTable.AsEnumerable().Sum(row => row.Field<decimal?>("Col3") ?? 0);
                        decimal total_Col4 = dTable.AsEnumerable().Sum(row => row.Field<decimal?>("Col4") ?? 0);
                        decimal total_Col5 = dTable.AsEnumerable().Sum(row => row.Field<decimal?>("Col5") ?? 0);
                        decimal total_Col6 = dTable.AsEnumerable().Sum(row => row.Field<decimal?>("Col6") ?? 0);

                        GridView1.FooterRow.Cells[1].Text = "Total";
                        GridView1.FooterRow.Cells[1].HorizontalAlign = HorizontalAlign.Left;
                        GridView1.FooterRow.Cells[2].Text = total_Col2.ToString("N2");
                        GridView1.FooterRow.Cells[3].Text = total_Col3.ToString("N2");
                        GridView1.FooterRow.Cells[4].Text = total_Col4.ToString("N2");
                        GridView1.FooterRow.Cells[5].Text = total_Col5.ToString("N2");
                        GridView1.FooterRow.Cells[6].Text = total_Col6.ToString("N2");
                    }

                }
            }
        }

上面的代碼沒有按我想要的方式工作，我認為這非常復雜。 任何幫助表示贊賞

Answer 1

有一個 ROLLUP 子句，請參閱https://www.sqltutorial.org/sql-rollup/你想要這樣的：

SELECT 
    c1, c2, aggregate_function(c3)
FROM
    table
GROUP BY ROLLUP (c1, c2);