同步项目中需要用到百万条数据分页，测试完毕

测试存储过程如下：

/*建测试用的库和表*/

create database data_Test --创建数据库data_Test

GO

use data_Test

GO

create table tb_TestTable --创建表

(

id int identity(1,1) primary key,

userName nvarchar(20) not null,

userPWD nvarchar(20) not null,

userEmail nvarchar(40) null

)

go

--插入数据

set identity_insert tb_TestTable on

declare @count int

set @count=1

while @count<=2000000

begin

insert into tb_TestTable(id,userName,userPWD,userEmail) values(@count,'admin','admin888','lli0077@yahoo.com.cn')

set @count=@count+1

end

set identity_insert tb_TestTable off

--创建存储过程

create procedure proc_paged_with_notin --利用select top and select not in

(

@pageIndex int, --页索引

@pageSize int --每页记录数

)

as

begin

set nocount on;

declare @timediff datetime --耗时

declare @sql nvarchar(500)

select @timediff=Getdate()

set @sql='select top '+str(@pageSize)+' * from tb_TestTable where(ID not in(select top '+str(@pageSize*@pageIndex)+' id from tb_TestTable order by ID ASC)) order by ID'

execute(@sql) --因select top后不支技直接接参数，所以写成了字符串@sql

select datediff(ms,@timediff,GetDate()) as 耗时

set nocount off;

end

下面是测试在asp.net中调用：

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

public partial class testDatagrid : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

this.DataGrid1.VirtualItemCount = 200000;

if (!Page.IsPostBack)

{

this.DataGrid1.DataSource = ListProduct(0, 100).Tables[0];

this.DataGrid1.DataBind();

}

}

//调用存储过程返回记录集

public DataSet ListProduct(int pageIndex, int pageSize)

{

SqlConnection conn = new SqlConnection("Server=mfmdl;database=data_Test;uid=sa;pwd=sa");

SqlCommand comm = new SqlCommand();

comm.Connection = conn;

comm.CommandType = CommandType.StoredProcedure;

comm.CommandText = "proc_paged_with_notin";

SqlParameter Del_Fold_Para1 = new SqlParameter("@pageIndex", SqlDbType.Int);

Del_Fold_Para1.Value = pageIndex;

SqlParameter Del_Fold_Para2 = new SqlParameter("@pageSize", SqlDbType.Int);

Del_Fold_Para2.Value = pageSize;

comm.Parameters.Add(Del_Fold_Para1);

comm.Parameters.Add(Del_Fold_Para2);

SqlDataAdapter adapter = new SqlDataAdapter(comm);

DataSet ds = new DataSet();

adapter.Fill(ds);

return ds;

}

protected void DataGrid1_PageIndexChanged(object source, DataGridPageChangedEventArgs e)

{

// 设置当前的Page序号值, 如果不设置的话它是不会变得, 这样会给用户造成误解,以为所有页的数据相同。

DataGrid1.CurrentPageIndex = e.NewPageIndex;

this.DataGrid1.DataSource = ListProduct(e.NewPageIndex + 1, DataGrid1.PageSize);

DataGrid1.DataBind();

}

}