sql2005 高效分页存储过程(已优化)
本文导语: 1、分页存储过程: 代码示例: 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, ...
1、分页存储过程:
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)
2、通过封装一个静态函数来执行:(EnterpriseLibrary3。1)
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
{
///
/// Pageing
///
public class Pageing
{
public Pageing()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
#region Pg_Paging
///
/// Pg_Paging
///
///
///
///
///
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
///
/// Pg_Paging
///
///
///
///
///
///
///
///
///
///
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
}
}
3、前台调用:
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:" + AspNetPager1.RecordCount.ToString() + "";
AspNetPager1.CustomInfoText += " 总页数:" + AspNetPager1.PageCount.ToString() + "";
AspNetPager1.CustomInfoText += " 当前页:" + AspNetPager1.CurrentPageIndex.ToString() + "";
}