程序代码

Create PROCEDURE pageTest --用于翻页的测试
--需要把排序字段放在第一列
(
@FirstID nvarchar(20)=null, --当前页面里的第一条记录的排序字段的值
@LastID nvarchar(20)=null, --当前页 面里的最后一条记录的排序字段的值
@isNext bit=null, --true 1 :下一页;false 0:上一页
@allCount int output, --返回总记录数
@pageSize int output, --返回一页的记录数
@CurPage int --页号(第几页)0:第一页;-1最后一页。
)

AS

if @CurPage=0
begin
--统计总记录数
select @allCount=count(ProductId) from Product_test

set @pageSize=10
--返回第一页的数据
select top 10
ProductId,
ProductName,
Introduction
from Product_test order by ProductId
end

else if @CurPage=-1

select * from
(select top 10 ProductId,
ProductName,
Introduction

from Product_test order by ProductId desc ) as aa
order by ProductId
else

begin
if @isNext=1
--翻到下一页
select top 10 ProductId,
ProductName,
Introduction
from Product_test where ProductId > @LastID order by ProductId

else
--翻到上一页
select * from
(select top 10 ProductId,
ProductName,
Introduction
from Product_test where ProductId < @FirstID order by ProductId desc) as bb order by ProductId
end













-- 获取指定页的数据
Create PROCEDURE pagination
@tblName varchar(255), -- 表名
@strGetFields varchar(1000) = '*', -- 需要返回的列
@fldName varchar(255)='', -- 排序的字段名
@PageSize int = 10, -- 页尺寸
@PageIndex int = 1, -- 页码
@doCount 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(1500) = '' -- 查询条件 (注意: 不要加 where)
AS

declare @strSQL varchar(5000) -- 主语句
declare @strTmp varchar(110) -- 临时变量
declare @strOrder varchar(400) -- 排序类型
if @doCount != 0
begin
    if @strWhere !=''
     set @strSQL = "select count(*) as Total from [" + @tblName + "] where "+@strWhere
    else
     set @strSQL = "select count(*) as Total from [" + @tblName + "]"
end
--以上代码的意思是如果@doCount传递过来的不是0,就执行总数统计。以下的所有代码都是@doCount为0的情况

else
begin
    if @OrderType != 0
     begin
      set @strTmp = "<(select min"
      set @strOrder = " order by [" + @fldName +"] desc"
      --如果@OrderType不是0,就执行降序,这句很重要!
     end
  
    else
     begin
      set @strTmp = ">(select max"
      set @strOrder = " order by [" + @fldName +"] asc"
     end
     if @PageIndex = 1
      begin
       if @strWhere != ''
        set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ " from [" + @tblName + "] where " + @strWhere + " " + @strOrder
       else
        set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ " from ["+ @tblName + "] "+ @strOrder
        --如果是第一页就执行以上代码,这样会加快执行速度
      end
     else
      begin
       --以下代码赋予了@strSQL以真正执行的SQL代码
       set @strSQL = "select top " + str(@PageSize) +" "+@strGetFields+ " 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) +" "+@strGetFields+ " from ["
        + @tblName + "] where [" + @fldName + "]" + @strTmp + "(["
        + @fldName + "]) from (select top " + str((@PageIndex-1)*@PageSize) + " ["
        + @fldName + "] from [" + @tblName + "] where " + @strWhere + " "
        + @strOrder + ") as tblTmp) and " + @strWhere + " " + @strOrder
end
end


exec (@strSQL)
GO
posted on 2007-06-26 16:58  Dragon-China  阅读(424)  评论(0编辑  收藏  举报