如何将数据从一个表移动到另一个C＃

Question

I have a two table named test1 and test2 i want to move data from test1 to test2 in a way like if a condition matches update data else insert in to database.I have successfully done the oracle query which i posted down.I have to achieve two more tasks

**1>I have to move the operation in to console c# application

2>i have to remove the leading blank spaces for entries t2_fNAME and ACCOUNT_NUMBER** How i can achieve this task do i need to do ado.net c# code if so how to do it

merge into test2 a
using test1 b
   on (a.t2_NAME = b.t1_NAME)
when matched then update
  set a.t2_fNAME = b.t1_fNAME,
      a.ACCOUNT_NUMBER = b.ACCOUNT_NO,

when not matched then
insert (t2_slno,t2_NAME,t2_fNAME,ACCOUNT_NUMBER)
values (t2_NODE_SEQ.NEXTVAL, b.t1_NAME,b.t1_fNAME,b.ACCOUNT_NO);

Answer 1

1. You can create a Console application and Use ADO.Net to execute the query

2. Use Trim Function in Oracle to remove leading blank spaces.

Here is the code (Not tested as I don't have Oracle DB)

using System;
using System.Data;
using System.Data.OracleClient;

namespace TestApp
{
    class Program
    {
        static void Main()
        {
            string connectionString = "Data Source=ThisOracleServer;Integrated Security=yes;";
            string queryString = @"merge into test2 a
                                    using test1 b
                                        on (a.t2_NAME = b.t1_NAME)
                                    when matched then update
                                        set a.t2_fNAME = TRIM(b.t1_fNAME),
                                            a.ACCOUNT_NUMBER = TRIM(b.ACCOUNT_NO),

                                    when not matched then
                                    insert (t2_slno,t2_NAME,t2_fNAME,ACCOUNT_NUMBER)
                                    values (t2_NODE_SEQ.NEXTVAL, b.t1_NAME,TRIM(b.t1_fNAME),TRIM(b.ACCOUNT_NO));";

            using (OracleConnection connection = new OracleConnection(connectionString))
            {
                using (OracleCommand command = connection.CreateCommand())
                {
                    command.CommandText = queryString;

                    try
                    {
                        connection.Open();
                        command.ExecuteScalar();
                    }
                    catch (Exception ex)
                    {
                        //Log Exception here;
                        throw;
                    }
                }
            }
        }
    }
}

References

1. MSDN
2. Oracle TRIM Function