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：

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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~~