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~~