Orcale本人工具使用

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Oracle.ManagedDataAccess.Client;
using System.Data;
using System;
public class OrcaleAccess 


{
    public static OracleConnection dbConnection;
    static string host = "访问地址";
    static string database = "数据库名";
    static string id = "账户";
    static string pwd = "密码";


    public OrcaleAccess()
    {
        OpenSql();
    }


    public static void OpenSql()
    {
        try
        {
            string connectionString = string.Format("User ID={0};Password={1};Data Source=(DESCRIPTION = (ADDRESS_LIST= (ADDRESS = (PROTOCOL = TCP)(HOST = {2})(PORT = {3})))  (CONNECT_DATA =(SERVICE_NAME = {4})))", id, pwd, host, "1521", database);
            dbConnection = new OracleConnection(connectionString);
            dbConnection.Open();
        }
        catch (Exception e)
        {
            throw new Exception("服务器连接失败，请重新检查是否打开Orcale服务。" + e.Message.ToString());
        }
    }


    /// <summary>
    /// 关闭数据库
    /// </summary>
    public void Close()
    {
        if (dbConnection != null)
        {
            dbConnection.Close();
            dbConnection.Dispose();
            dbConnection = null;
        }
    }


    /// <summary>
    /// 返回表的查询结果
    /// </summary>
    /// <returns>The all.</returns>
    /// <param name="Name">Name.</param>
    public OracleDataReader SelectAll(string Name)
    {
        string query = "select * from " + " " + Name;
        return ExecuteQuery(query);
    }




    /// <summary>
    /// 条件查找
    /// </summary>
    /// <returns>The where.</returns>
    /// <param name="tableName">表名</param>
    /// <param name="items">选择的字段</param>
    /// <param name="col">查找根据的字段</param>
    /// <param name="operation">查找根据的运算符</param>
    /// <param name="values">查找根据的值</param>
    public OracleDataReader SelectWhere(string tableName, string[] items, string[] col, string[] operation, string[] values)
    {
        if (col.Length != operation.Length || operation.Length != values.Length)
        {
            throw new Exception("col.Length != operation.Length != values.Length");
        }
        string query = "SELECT " + items[0];
        for (int i = 1; i < items.Length; ++i)
        {
            query += ", " + items[i];
        }
        query += " FROM " + tableName + " WHERE " + col[0] + operation[0] + "'" + values[0] + "' ";
        for (int i = 1; i < col.Length; ++i)
        {
            query += " AND " + col[i] + operation[i] + "'" + values[0] + "' ";
        }


        return ExecuteQuery(query);
    }
    /// <summary>
    /// eg：根据时间段查找
    /// </summary>
    /// <param name="tableName"></param>
    /// <param name="items"></param>
    /// <param name="col"></param>
    /// <param name="old"></param>
    /// <param name="latter"></param>
    /// <param name="uuid"></param>
    /// <returns></returns>


    public OracleDataReader SelectTimeWhere(string tableName, string[] items, string[] col, string[] old,  string[] latter , string uuid)
    {
        string query = "SELECT " + items[0];
        for (int i = 1; i < items.Length; ++i)
        {
            query += ", " + items[i];
        }
        query += " FROM " + tableName + " WHERE " + col[0]+" BETWEEN TO_DATE ( "+ "'" + old[0] + "' ,"+ " '" + "yyyy-MM-dd HH24:mi:ss" + "' " + ") AND  TO_DATE (" + " '" + latter[0] + "' ,"+ " '" + "yyyy-MM-dd HH24:mi:ss " + "' )" + " AND "+ " UUID = "+ " '" + uuid + "' ";
        return ExecuteQuery(query);
    }


    /// <summary>
    /// 返回检索结果
    /// </summary>
    /// <returns>The query.</returns>
    /// <param name="sqlString">Sql string.</param>
    public static OracleDataReader ExecuteQuery(string sqlString)
    {
        if (dbConnection.State == ConnectionState.Open)
        {
            OracleDataReader dr = null;  //表的集合
            try
            {
                OracleCommand cmd = new OracleCommand(sqlString, dbConnection);
                dr = cmd.ExecuteReader();
            }
            catch (Exception ee)
            {
                throw new Exception("SQL:" + sqlString + "/n" + ee.Message.ToString());
            }
            finally
            {
            }
            return dr;
        }
        return null;
    }


}

OrcaleAccess

注意：使用时必须包含Oracle.ManagedDataAccess.dll，System.Data.dll。

    private void SelectRealTime()
    {
        OrcaleAccess orcale = new OrcaleAccess();

        OracleDataReader od = orcale.SelectAll("表名");

        while (od.Read())

        {
            RealTime ele = new RealTime();
            ele.RealTime_TIME = od["TIME"].ToString();
            realtimeTable.Add(ele);

        }
        orcale.Close();

    }

使用案例