C# 将表的列条目传输到另一个表的行的最佳方法

我必须编写一个程序，在VisualStudio2010C和SQLServer2012中，在上述限制下，将数据从一个表传输到另一个表。 问题是要找到一个高效的算法来实现这一点，因为表非常长

    private static void fillRows()
    {
        //i have
        List<String> rows; // a list with table1 names (a,b,c,d,e...)
        List<String> columnList; //list with table2 columnNames (a#mm,b#cm,c#m...)

        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            using (var command = connection.CreateCommand())
            {

            }
        }
    }

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可以透视表或结果集

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我不知道如何用参数化查询来处理它，但它是有效的

    private static void fillRows(List<String> columnList, String SOURCE_TABLE, String TARGET_TABLE, String COLUMN_NAME, String COLUMN_VALUE)
    {
        Console.WriteLine("Start filling");
        try
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();
                string selectSql = "SELECT " + COLUMN_NAME + "," + COLUMN_VALUE + " FROM " + SOURCE_TABLE;

                SqlDataAdapter dataAdapter = new SqlDataAdapter(selectSql, connection);
                DataTable dataTable = new DataTable("cache");
                dataAdapter.Fill(dataTable);

                //Set ID
                int ID = 1;
                string insertSql = "INSERT INTO " + TARGET_TABLE + " VALUES ('" + ID + "',";
                StringBuilder sbInsertSQL = new StringBuilder();
                sbInsertSQL.Append(insertSql);


                int count = 0;
                foreach (DataRow row in dataTable.Rows)
                {
                    if (count == columnList.Count)
                    {
                        count = 0;
                        sbInsertSQL.Length--; //remove ','
                        sbInsertSQL.Append(");"); //complete command

                        SqlCommand sqlCmd = new SqlCommand(sbInsertSQL.ToString(), connection);

                        sqlCmd.ExecuteNonQuery(); //Insert row

                        //reset 
                        sbInsertSQL.Clear();
                        ID++;
                        sbInsertSQL.Append("INSERT INTO " + TARGET_TABLE + " VALUES ('" + ID + "',");
                    }

                    //make sure, connecting correct
                    if (row[0].ToString().Equals(columnList[count].Split('#')[0])) //split off the unit
                    {
                        sbInsertSQL.Append("'" + tools.withoutUnit(row[1].ToString()) + "',");
                        count++;
                    }      
                }
                connection.Close();
            }
        }

        catch (Exception ex)
        {
            Console.WriteLine(ex);
            Console.ReadLine();
        }
    }

---

我对列名是如何生成的有点困惑。。在表2中，它们根据表1中的计量单位动态生成名称，这样说对吗？@jonny是的，它的名称+单位给我五分钟：\n好主意，但我不能使用它，因为我需要一个c程序，我给定的值只是一个例子。正如前面所说，我有一个非常大的表，其中的列要多得多。为什么不能在c程序中使用Command.ExecuteOnQuery的代码呢？如果有更多列，会出现什么问题？这不像复制/粘贴/编辑最大行需要很多时间。是的，这将需要很多时间，尤其是对于所有表。它必须是动态的

    private static void fillRows(List<String> columnList, String SOURCE_TABLE, String TARGET_TABLE, String COLUMN_NAME, String COLUMN_VALUE)
    {
        Console.WriteLine("Start filling");
        try
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();
                string selectSql = "SELECT " + COLUMN_NAME + "," + COLUMN_VALUE + " FROM " + SOURCE_TABLE;

                SqlDataAdapter dataAdapter = new SqlDataAdapter(selectSql, connection);
                DataTable dataTable = new DataTable("cache");
                dataAdapter.Fill(dataTable);

                //Set ID
                int ID = 1;
                string insertSql = "INSERT INTO " + TARGET_TABLE + " VALUES ('" + ID + "',";
                StringBuilder sbInsertSQL = new StringBuilder();
                sbInsertSQL.Append(insertSql);


                int count = 0;
                foreach (DataRow row in dataTable.Rows)
                {
                    if (count == columnList.Count)
                    {
                        count = 0;
                        sbInsertSQL.Length--; //remove ','
                        sbInsertSQL.Append(");"); //complete command

                        SqlCommand sqlCmd = new SqlCommand(sbInsertSQL.ToString(), connection);

                        sqlCmd.ExecuteNonQuery(); //Insert row

                        //reset 
                        sbInsertSQL.Clear();
                        ID++;
                        sbInsertSQL.Append("INSERT INTO " + TARGET_TABLE + " VALUES ('" + ID + "',");
                    }

                    //make sure, connecting correct
                    if (row[0].ToString().Equals(columnList[count].Split('#')[0])) //split off the unit
                    {
                        sbInsertSQL.Append("'" + tools.withoutUnit(row[1].ToString()) + "',");
                        count++;
                    }      
                }
                connection.Close();
            }
        }

        catch (Exception ex)
        {
            Console.WriteLine(ex);
            Console.ReadLine();
        }
    }