Question

我正在尝试使用c＃连接到Teradata。我使用的是this website

中的示例代码

using System;
using System.Collections.Generic;
using System.Text;
using Teradata.Client.Provider;

namespace Teradata.Client.Provider.HelloWorld
{
    class HelloWorld
    {
        static void Main(string[] args)
        {
            using (TdConnection cn = new TdConnection("Data Source = x;User ID = y;Password = z;"))
            {
                cn.Open();
                TdCommand cmd = cn.CreateCommand();
                cmd.CommandText = "SELECT DATE";
                using (TdDataReader reader = cmd.ExecuteReader())
                {
                    reader.Read();
                    DateTime date = reader.GetDate(0);
                    Console.WriteLine("Teradata Database DATE is {0}", date);
                 }
             }
         }
    }
}

（我也试过DSN , UID , PWD 但是，我的异常是用户ID，帐户或密码不正确 ... 但我可以轻松地使用SQL Assistant登录。所以，我排除了不正确的用户标识或密码

Here I found a possible solution for my problem 但我不知道在示例代码中需要更改的内容。

所以，我不知道如何实施该解决方案。

有人可以给我一个有效的示例代码吗？

Answer 1

根据您发布的链接，将身份验证机制更改为LDAP可能会有效。

TdConnectionStringBuilder connectionStringBuilder = new TdConnectionStringBuilder();
connectionStringBuilder.DataSource = "x";
connectionStringBuilder.Database = "DATABASENAME";
connectionStringBuilder.UserId = "y";
connectionStringBuilder.Password = "z";
connectionStringBuilder.AuthenticationMechanism = "LDAP";

using (TdConnection cn = new TdConnection())
{
    cn.ConnectionString = connectionStringBuilder.ConnectionString;
    cn.Open();

    TdCommand cmd = cn.CreateCommand();
    cmd.CommandText = "SELECT DATE";

    using (TdDataReader reader = cmd.ExecuteReader())
    {
        reader.Read();
        DateTime date = reader.GetDate(0);
        Console.WriteLine("Teradata Database DATE is {0}", date);
    }
}

Answer 2

试试这个。试着看看你是否在字符串'tt'中得到任何东西。 Plz将您的DBCommand查询更改为相关的任何内容。

    public readonly String sUser = "UserName";
    public readonly String sPassword = "Password";
    public readonly String sDataSource = "IP Address"; 
    public readonly String sConnection = "Data Source=" + sDataSource + ";User ID=" + sUser + ";Password=" + sPassword;


        DbProviderFactory pf = DbProviderFactories.GetFactory("Teradata.Client.Provider");
        DbConnection con = pf.CreateConnection();
        con.ConnectionString = sConnection ;       
        DbCommand cmd= new DbCommand("select top 10 * from tdb.access_method");
        DbCommand Db = (DbCommand)cmd;
        Db.Connection = con;
        DataSet ds = new DataSet();
        con.Open();
        string tt = (string)Db.ExecuteScalar();

Answer 3

试试这个

                TdConnectionStringBuilder builder=new TdConnectionStringBuilder();
                builder.Add("Data Source", "xxx");
                builder.Add("User ID", "vvv");
                builder.Add("Password", "bbb");
                TdConnection cn = new TdConnection(builder.ConnectionString);
                cn.Open();

Answer 4

复制粘贴此内容。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Teradata.Client.Provider;

namespace Teradata.Client.Provider.ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {

            TdConnection cn = new TdConnection();
            TdConnectionStringBuilder conStrBuilder = new TdConnectionStringBuilder();

            conStrBuilder.DataSource = "DSN";
            // conStrBuilder.Database = "optional";

            conStrBuilder.UserId = "user"; conStrBuilder.Password = "pass";
            cn.ConnectionString = conStrBuilder.ConnectionString;

            cn.Open();

            Console.WriteLine("connection successfull");
        }
    }
}

如何在c＃中设置.net teradata连接？

4 个答案: