Oracle 存儲過程多數據集返回-程序處理

oracle 存儲過程返回數據集是以遊標參數的形式返回,同時返回多個數據集就相當於多幾個輸出類型的遊標參數,而在程序處理中如何處理這種多結果集的存儲過程?

今天研究了Delphi7 和 c# 兩種語言,D7 ODBC 方式連接,OraStoreProced 對象無法處理多個對象,查看其父類TCustomOraQuery,不想c# 斷開式數據集可以接收多個集合,即DataSet 等同於 List
  • 示例

Oracle

--包頭
create or replace package mypackage is
type cur_type is ref cursor;
procedure pr_get_data(cur1 out cur_type,cur2 out cur_type);
end;
--包體
create or replace package body mypackage is
procedure pr_get_data(cur1 out cur_type,cur2 out cur_type) as
begin
  open cur1 for select * from sales;
  open cur2 for select * from t1;
end;
end;

c# 調用

  • C# 示例
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Oracle.ManagedDataAccess.Client;

namespace WinStoreProced
{
    public partial class Form1 : Form
    {
        private string connstr = "Data Source=(DESCRIPTION =(ADDRESS =(PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = ORCL)));User Id=t1;Password=tt123;";

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            using (OracleConnection conn = new OracleConnection(connstr)) {
                try
                {
                    conn.Open();
                    Text = "Success";
                    using (OracleCommand cmd = conn.CreateCommand())
                    {
                        cmd.CommandType = CommandType.StoredProcedure;
                        cmd.CommandText = "mypackage.pr_get_data";
                        cmd.Parameters.Clear();
                        cmd.Parameters.Add("data1", OracleDbType.RefCursor, ParameterDirection.Output);
                        cmd.Parameters.Add("data2", OracleDbType.RefCursor, ParameterDirection.Output);
                        cmd.Prepare();
                        try
                        {
                            OracleDataAdapter oda = new OracleDataAdapter(cmd);
                            DataSet ds = new DataSet();
                            oda.Fill(ds);
                            dataGridView1.DataSource = ds.Tables[0];
                            dataGridView2.DataSource = ds.Tables[1];
                        }
                        catch (Exception ex)
                        {
                            MessageBox.Show(ex.Message);
                        }


                    }
                }
                catch(Exception ex) {
                    MessageBox.Show(ex.Message);
                }
            }
        }
    }
}

  • 結果
    image
發表評論
所有評論
還沒有人評論,想成為第一個評論的人麼? 請在上方評論欄輸入並且點擊發布.
相關文章