sql2005 高效分页存储过程(已优化)

ALTER PROCEDURE [dbo].[Pg_Paging]
@Tables varchar(1000), --表名,多红表是请使用 tA a inner join tB b On a.AID = b.AID
@PK varchar(100),    --主键，可以带表头 a.AID
@Sort varchar(200) = '', --排序字段
@PageNumber int = 1,    --开始页码
@PageSize int = 10, --页大小
@Fields varchar(1000) = '*',--读取字段
@Filter varchar(1000) = NULL,--Where条件
@Group varchar(1000) = NULL,  --分组
@isCount bit = 0     --1    --是否获得总记录数
AS
--select * from GL_NEWS order by GN_UPDATE_DATE DESC
--exec Pg_Paging @Tables = 'tb_NewsInfo', @PK = 'News_ID', @Sort = 'News_ID DESC', @PageNumber = 2, @PageSize = 15,@Fields = '*', @Group = '', @isCount = 0
DECLARE @strFilter varchar(2000)
declare @sql varchar(8000)
IF @Filter IS NOT NULL AND @Filter != ''
  BEGIN
   SET @strFilter = ' WHERE ' + @Filter + ' '
  END
ELSE
  BEGIN
   SET @strFilter = ''
  END

if @isCount = 1 --只获得记录条数
    begin
 set @sql = 'SELECT  Count(*) FROM ' + @Tables + @strFilter 
    end
else
begin
if @Sort = ''
  set @Sort = @PK + ' DESC '

IF @PageNumber < 1
  SET @PageNumber = 1

if @PageNumber = 1 --第一页提高性能
begin
  set @sql = 'select top ' + str(@PageSize) +' '+@Fields+ '  from ' + @Tables + ' ' + @strFilter + ' ORDER BY  '+ @Sort
end
else
  begin
  /**//*Execute dynamic query*/   
   DECLARE @START_ID varchar(50)
DECLARE @END_ID varchar(50)
SET @START_ID = convert(varchar(50),(@PageNumber - 1) * @PageSize + 1)
SET @END_ID = convert(varchar(50),@PageNumber * @PageSize)
    set @sql =  ' SELECT '+@Fields+ '
   FROM (SELECT ROW_NUMBER() OVER(ORDER BY '+@Sort+') AS rownum, '+@Fields+ '
      FROM ' ' +@strFilter++@Tables+'') AS D
   WHERE rownum BETWEEN '+@START_ID+' AND ' +@END_ID +' ORDER BY '+@Sort
  END

END
--print @sql

EXEC(@sql)

using System;
using System.Data;
using System.Data.Common;
using System.Globalization;
using System.Xml;
using Microsoft.Practices.EnterpriseLibrary.Data;
using Microsoft.Practices.EnterpriseLibrary.Data.Sql;
namespace Glenet.EjiaShop.SqlData
{
    /// <summary>
    ///  Pageing
    /// </summary>
    public class Pageing
    {
 public Pageing()
 {
     //
     // TODO: 在此处添加构造函数逻辑
     //
 }

 #region Pg_Paging
 /// <summary>
 /// Pg_Paging
 /// </summary>
 /// <param name="Tables"></param>
 /// <param name="PK"></param>
 /// <param name="Filter"></param>
 /// <returns></returns>
 public static int Pg_PageCount(string Tables,string PK,string Filter)
 {
     //创建数据库实例
     Database db = DatabaseFactory.CreateDatabase();
     //获得命令
     string sqlCommand = "Pg_Paging";
     DbCommand dbCommand = db.GetStoredProcCommand(sqlCommand);
     //设置参数
     db.AddInParameter(dbCommand, "Tables", DbType.String, Tables);
     db.AddInParameter(dbCommand, "PK", DbType.String, PK);
     db.AddInParameter(dbCommand, "Sort", DbType.String, "");
     db.AddInParameter(dbCommand, "PageNumber", DbType.Double, 0);
     db.AddInParameter(dbCommand, "PageSize", DbType.Double, 0);
     db.AddInParameter(dbCommand, "Fields", DbType.String, "*");
     db.AddInParameter(dbCommand, "Filter", DbType.String, Filter);
     db.AddInParameter(dbCommand, "Group", DbType.String, "");
     db.AddInParameter(dbCommand, "isCount", DbType.Boolean, 1);

     //执行
     return int.Parse(db.ExecuteScalar(dbCommand).ToString());   
     //取得输出参数

 }
 #endregion

 #region Pg_Paging
 /// <summary>
 /// Pg_Paging
 /// </summary>
 /// <param name="Tables"></param>
 /// <param name="PK"></param>
 /// <param name="Sort"></param>
 /// <param name="PageNumber"></param>
 /// <param name="PageSize"></param>
 /// <param name="Fields"></param>
 /// <param name="Filter"></param>
 /// <param name="Group"></param>
 /// <returns></returns>
 public static DataSet Pg_Paging(string Tables,string PK,string Sort,int PageNumber,int PageSize,string Fields,string Filter,string Group)
 {
     //创建数据库实例
     Database db = DatabaseFactory.CreateDatabase();
     //获得命令
     string sqlCommand = "Pg_Paging";
     DbCommand dbCommand = db.GetStoredProcCommand(sqlCommand);
     //设置参数    
     db.AddInParameter(dbCommand, "Tables", DbType.String, Tables);
     db.AddInParameter(dbCommand, "PK", DbType.String, PK);
     db.AddInParameter(dbCommand, "Sort", DbType.String, Sort);
     db.AddInParameter(dbCommand, "PageNumber", DbType.Double, PageNumber);
     db.AddInParameter(dbCommand, "PageSize", DbType.Double, PageSize);
     db.AddInParameter(dbCommand, "Fields", DbType.String, Fields);
     db.AddInParameter(dbCommand, "Filter", DbType.String, Filter);
     db.AddInParameter(dbCommand, "Group", DbType.String, Group);
     db.AddInParameter(dbCommand, "isCount", DbType.Boolean, 0);

     //执行
     return db.ExecuteDataSet(dbCommand);   
 }
 #endregion
}
}

string filter = "  1 = 1 ";

 AspNetPager1.RecordCount = Glenet.EjiaShop.SqlData.Pageing.Pg_PageCount("tb_NewsInfo", "News_ID", filter);
 using (DataSet ds = Glenet.EjiaShop.SqlData.Pageing.Pg_Paging("tb_NewsInfo", "News_ID", "News_AddTime DESC", AspNetPager1.CurrentPageIndex, AspNetPager1.PageSize, "*", filter, ""))
 {
     this.Re_ContentList.DataSource = ds.Tables[0].DefaultView;
     this.Re_ContentList.DataBind();

     AspNetPager1.CustomInfoText = "记录总数：<font color="#00007f"><b>" + AspNetPager1.RecordCount.ToString() + "</b></font>";
     AspNetPager1.CustomInfoText += " 总页数：<font color="#00007f"><b>" + AspNetPager1.PageCount.ToString() + "</b></font>";
     AspNetPager1.CustomInfoText += " 当前页：<font color="red"><b>" + AspNetPager1.CurrentPageIndex.ToString() + "</b></font>";
 }