如何將數據從一個表移動到另一個表＃

Question

我有一個名爲test1和test2的兩個表，我想以某種方式將數據從test1移動到test2，就像條件匹配更新數據，否則插入到數據庫中。完成Oracle查詢我貼就弄傷必須實現兩個任務

** 1>我要到控制檯C＃應用程序

2移動操作>我要刪除前導空格爲條目t2_fNAME和ACCOUNT_NUMBER ** 如何才能實現此任務我需要做ado.net c＃代碼如果是的話怎麼做

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. 您可以創建一個控制檯應用程序並使用ADO.Net在甲骨文執行查詢

2. 使用Trim功能刪除前導空格。

下面是代碼（未測試，因爲我沒有Oracle數據庫）

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; 
        } 
       } 
      } 
     } 
    } 
} 

參考

1. MSDN
2. Oracle TRIM Function