实现千万级数据的分页显示!

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
/*
 名称:spAll_DeleteNoneUnique
 输入:要查询的表名和字段列表
 输出:
 调用:
 说明:实现千万级数据的分页显示!--可以在5秒内获取1448万条记录里的第1200页的100条记录，雄不？
 作者:铁拳
 邮件:
 网站:http://www.wellknow.net
 更新:20040610
 支持:http://bbs.wellknow.net
 版权:转述时请注明来源:用思维创造未来的Wellknow.net
*/

CREATE PROCEDURE [dbo].[GetRecordFromPage]
    @tblName      varchar(255),       -- 表名
    @fldName      varchar(2552),       -- 字段名
    @PageSize     int = 10,           -- 页尺寸
    @PageIndex    int = 1,            -- 页码
    @IsCount      bit = 0,            -- 返回记录总数, 非 0 值则返回
    @OrderType    bit = 0,            -- 设置排序类型, 非 0 值则降序
    @strWhere     varchar(1000) = ''  -- 查询条件 (注意: 不要加 where)
AS

declare @strSQL   varchar(6000)       -- 主语句
declare @strTmp   varchar(1000)        -- 临时变量
declare @strOrder varchar(4000)        -- 排序类型

if @OrderType != 0
begin
    set @strTmp = '<(select min'
    set @strOrder = ' order by [' + @fldName +'] desc'
end
else
begin
    set @strTmp = '>(select max'
    set @strOrder = ' order by [' + @fldName +'] asc'
end

set @strSQL = 'select top ' + str(@PageSize) + ' * from ['
    + @tblName + '] where [' + @fldName + ']' + @strTmp + '(['
    + @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['
    + @fldName + '] from [' + @tblName + ']' + @strOrder + ') as tblTmp)'
    + @strOrder

if @strWhere != ''
    set @strSQL = 'select top ' + str(@PageSize) + ' * from ['
        + @tblName + '] where [' + @fldName + ']' + @strTmp + '(['
        + @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['
        + @fldName + '] from [' + @tblName + '] where ' + @strWhere + ' '
        + @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder

if @PageIndex = 1
begin
    set @strTmp = ''
    if @strWhere != ''
        set @strTmp = ' where ' + @strWhere

    set @strSQL = 'select top ' + str(@PageSize) + ' * from ['
        + @tblName + ']' + @strTmp + ' ' + @strOrder
end

if @IsCount != 0
    set @strSQL = 'select count(*) as Total from [' + @tblName + ']'

exec (@strSQL)

执行此存储过程:

 

DECLARE @return_value int

EXEC @return_value = [dbo].[GetRecordFromPage]
  @tblName = N'BreakfastPrice_1_bak',
  @fldName = N'ID',
  @PageSize = 100,
  @PageIndex = 4201,
  @IsCount = 0,
  @OrderType = 1

SELECT 'Return Value' = @return_value

GO

结果只要3秒就OK了(测试是在拥有50多万数据表中进行)

 

而用下面的存储过程

CREATE PROC [dbo].[GetHotelInfoOnWeb]
@pageSize  int,
@pageIndex  int

declare @startnum  varchar(20)--分页开始数值
declare @endnum   varchar(20)--分页结束数值
declare @str varchar(4000)

set @startnum=Convert(varchar(20),(@pageIndex-1)*@pageSize)
set @endnum=Convert(varchar(20),@pageIndex*@pageSize)

select @str='select c.* from (select row_number() over(order by id desc) as rowid,* from BreakfastPrice_1_bak ) as c'

select @str='select a.* from ('++') as a where a.rowid<'+@startnum+' and a.rowid>='+ @endnum

exec(@str)

执行完结果需要13秒