復(fù)制代碼 代碼如下:

--Create DataBase
create database BulkTestDB;
go
use BulkTestDB;
go
--Create Table
Create table BulkTestTable(
Id int primary key,
UserName nvarchar(32),
Pwd varchar(16))
go
--Create Table Valued
CREATE TYPE BulkUdt AS TABLE
(Id int,
UserName nvarchar(32),
Pwd varchar(16))

復(fù)制代碼 代碼如下:

Stopwatch sw = new Stopwatch();

SqlConnection sqlConn = new SqlConnection(
ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString);//連接數(shù)據(jù)庫(kù)

SqlCommand sqlComm = new SqlCommand();
sqlComm.CommandText = string.Format("insert into BulkTestTable(Id,UserName,Pwd)values(@p0,@p1,@p2)");//參數(shù)化SQL
sqlComm.Parameters.Add("@p0", SqlDbType.Int);
sqlComm.Parameters.Add("@p1", SqlDbType.NVarChar);
sqlComm.Parameters.Add("@p2", SqlDbType.VarChar);
sqlComm.CommandType = CommandType.Text;
sqlComm.Connection = sqlConn;
sqlConn.Open();
try
{
//循環(huán)插入100萬(wàn)條數(shù)據(jù)，每次插入10萬(wàn)條，插入10次。
for (int multiply = 0; multiply < 10; multiply++)
{
for (int count = multiply * 100000; count < (multiply + 1) * 100000; count++)
{

sqlComm.Parameters["@p0"].Value = count;
sqlComm.Parameters["@p1"].Value = string.Format("User-{0}", count * multiply);
sqlComm.Parameters["@p2"].Value = string.Format("Pwd-{0}", count * multiply);
sw.Start();
sqlComm.ExecuteNonQuery();
sw.Stop();
}
//每插入10萬(wàn)條數(shù)據(jù)后，顯示此次插入所用時(shí)間
Console.WriteLine(string.Format("Elapsed Time is {0} Milliseconds", sw.ElapsedMilliseconds));
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
sqlConn.Close();
}

Console.ReadLine();

耗時(shí)圖如下：

由于運(yùn)行過(guò)慢，才插入10萬(wàn)條就耗時(shí)72390 milliseconds，所以我就手動(dòng)強(qiáng)行停止了。

下面看一下使用Bulk插入的情況：

bulk方法主要思想是通過(guò)在客戶端把數(shù)據(jù)都緩存在Table中，然后利用SqlBulkCopy一次性把Table中的數(shù)據(jù)插入到數(shù)據(jù)庫(kù)

代碼如下：

復(fù)制代碼 代碼如下:

public static void BulkToDB(DataTable dt)
{
SqlConnection sqlConn = new SqlConnection(
ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString);
SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConn);
bulkCopy.DestinationTableName = "BulkTestTable";
bulkCopy.BatchSize = dt.Rows.Count;

try
{
sqlConn.Open();
if (dt != null && dt.Rows.Count != 0)
bulkCopy.WriteToServer(dt);
}
catch (Exception ex)
{
throw ex;
}
finally
{
sqlConn.Close();
if (bulkCopy != null)
bulkCopy.Close();
}
}

public static DataTable GetTableSchema()
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[]{
new DataColumn("Id",typeof(int)),
new DataColumn("UserName",typeof(string)),
new DataColumn("Pwd",typeof(string))});

return dt;
}

static void Main(string[] args)
{
Stopwatch sw = new Stopwatch();
for (int multiply = 0; multiply < 10; multiply++)
{
DataTable dt = Bulk.GetTableSchema();
for (int count = multiply * 100000; count < (multiply + 1) * 100000; count++)
{
DataRow r = dt.NewRow();
r[0] = count;
r[1] = string.Format("User-{0}", count * multiply);
r[2] = string.Format("Pwd-{0}", count * multiply);
dt.Rows.Add(r);
}
sw.Start();
Bulk.BulkToDB(dt);
sw.Stop();
Console.WriteLine(string.Format("Elapsed Time is {0} Milliseconds", sw.ElapsedMilliseconds));
}

Console.ReadLine();
}

復(fù)制代碼 代碼如下:

public static void TableValuedToDB(DataTable dt)
{
SqlConnection sqlConn = new SqlConnection(
ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString);
const string TSqlStatement =
"insert into BulkTestTable (Id,UserName,Pwd)" +
" SELECT nc.Id, nc.UserName,nc.Pwd" +
" FROM @NewBulkTestTvp AS nc";
SqlCommand cmd = new SqlCommand(TSqlStatement, sqlConn);
SqlParameter catParam = cmd.Parameters.AddWithValue("@NewBulkTestTvp", dt);
catParam.SqlDbType = SqlDbType.Structured;
//表值參數(shù)的名字叫BulkUdt，在上面的建立測(cè)試環(huán)境的SQL中有。
catParam.TypeName = "dbo.BulkUdt";
try
{
sqlConn.Open();
if (dt != null && dt.Rows.Count != 0)
{
cmd.ExecuteNonQuery();
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
sqlConn.Close();
}
}

public static DataTable GetTableSchema()
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[]{
new DataColumn("Id",typeof(int)),
new DataColumn("UserName",typeof(string)),
new DataColumn("Pwd",typeof(string))});

return dt;
}

static void Main(string[] args)
{
Stopwatch sw = new Stopwatch();
for (int multiply = 0; multiply < 10; multiply++)
{
DataTable dt = TableValued.GetTableSchema();
for (int count = multiply * 100000; count < (multiply + 1) * 100000; count++)
{
DataRow r = dt.NewRow();
r[0] = count;
r[1] = string.Format("User-{0}", count * multiply);
r[2] = string.Format("Pwd-{0}", count * multiply);
dt.Rows.Add(r);
}
sw.Start();
TableValued.TableValuedToDB(dt);
sw.Stop();
Console.WriteLine(string.Format("Elapsed Time is {0} Milliseconds", sw.ElapsedMilliseconds));
}

Console.ReadLine();
}

耗時(shí)圖如下：

比Bulk還快5秒。
此文原創(chuàng)自CSDN TJVictor