关于SqlBulkCopy的测试

最近要做.net关于sql大量插入，找到了sqlbulkcopy(自己google下，应该很多说明了)这个好东西，于是测试下性能，用了三个方法对比：

1)直接用ado.net,for循环N次进行单条插入

2)把N条插入语句拼在一个sql，进行插入

3)直接使用sqlbulkcopy进行插入

代码如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Diagnostics;

namespace SQLTEST
{
    class Program
    {
        static void Main(string[] args)
        {

            //int time = 200;
            test(20);
            test(200);
            test(2000);
            test(10000);
            test(50000);
            Console.ReadLine();
        }

        public static void test(int time){
            Stopwatch sp = new Stopwatch();
            Console.WriteLine(time + "条数据插入测试");

            //测试方法1
            {
                using (SqlConnection sqlcon = new SqlConnection("Data Source=.;Initial Catalog=Test;User ID=sa;Password=??"))
                {
                    sqlcon.Open();
                    string singesql = "INSERT INTO [student] ([name],[age])VALUES('abc',3);";
                    SqlCommand sqlcommand = new SqlCommand(singesql, sqlcon);
                    //计时开始
                    sp.Restart();
                    for (int i = 0; i < time; i++)
                    {
                        sqlcommand.ExecuteNonQuery();
                    }
                    sp.Stop();
                }
            }
            Console.WriteLine("方法1：" + sp.ElapsedMilliseconds + "毫秒");

            //测试方法2
            {
                using (SqlConnection sqlcon = new SqlConnection("Data Source=.;Initial Catalog=Test;User ID=sa;Password=??"))
                {
                    sqlcon.Open();
                    string singesql = "INSERT INTO [student] ([name],[age])VALUES('abc',3);";
                    string execsql = "";
                    for (int i = 0; i < time; i++)
                    {
                        execsql = execsql + singesql;
                    }
                    SqlCommand sqlcommand = new SqlCommand(execsql, sqlcon);

                    //计时开始
                    sp.Restart();
                    sqlcommand.ExecuteNonQuery();
                    sp.Stop();
                }
            }
            Console.WriteLine("方法2：" + sp.ElapsedMilliseconds + "毫秒");

            //测试方法3
            {
                using (SqlConnection sqlcon = new SqlConnection("Data Source=.;Initial Catalog=Test;User ID=sa;Password=??"))
                {
                    sqlcon.Open();
                    SqlBulkCopy sqlc = new SqlBulkCopy(sqlcon);
                    DataTable dt = new DataTable();
                    dt.Columns.Add("id");
                    dt.Columns.Add("name");
                    dt.Columns.Add("age");

                    for (int i = 0; i < time; i++)
                    {
                        dt.Rows.Add(38009, "nemw", 123);
                    }
                    sqlc.DestinationTableName = "student";

                    //计时开始
                    sp.Restart();
                    sqlc.WriteToServer(dt);
                    sp.Stop();
                }
            }
            Console.WriteLine("方法3：" + sp.ElapsedMilliseconds + "毫秒");
            Console.WriteLine();

        }
    }
}

　　

插入N条数据的测试结果如下：

效率相差还是很夸张的，大家大量数据插入还是有sqlbulkcopy吧，原理还的高手告知~~