经过一个下午的时间,和我一个同事(绝对是高手)的共同努力下,摸索出了以下的思路:
1、确定存储的输入参数:
1)SQL脚本,该参数接收完整的、正确的SQL检索文本,可将原应用中写好的SQL脚本直接传入
2)每页的数据容量,就是一页有多少条数据
3)当前页码
2、确定分页机制:
1)执行传入的SQL脚本,并将结果生成临时表
2)修改临时表的结构,增加标识列字段
3)根据标识列字段,计算出指定页码内的记录范围,并返回
4)返回总数据条数,用于客户端进行分页显示
根据以上的思路,编写出以下通用的分页存储过程:
复制代码代码如下:
[code]
--// ============================
--// SQL Server通用分页存储过程
--// Author : netwild
--// date : 2010/07/22
--// Email : netwild@163.com
--// QQ : 52100641(网无忌)
--// ============================
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO
CREATE PROC execByPage
@sqlQuery varchar(2000), --//输入参数:SQL检索语句或表名
@pageSize int, --//输入参数:每页显示记录条数
@pageIndex int --//输入参数:当前页码
AS
SET NOCOUNT ON
SET ANSI_WARNINGS OFF
declare @tmpTableName varchar(50)
set @tmpTableName = '##TB1516_' + replace(cast(newid() as varchar(40)),'-','') --//生成随机临时表名称
declare @subIndex int
set @subIndex = charindex('from',@sqlQuery)
if (@subIndex > 0)
begin --//带FROM的标准检索语句
declare @sqlQuery1 varchar(2000)
declare @sqlQuery2 varchar(2000)
set @sqlQuery1 = substring(@sqlQuery,1,@subIndex - 1)
set @sqlQuery2 = substring(@sqlQuery,@subIndex,len(@sqlQuery))
set @sqlQuery = @sqlQuery1 + ',IDENTITY(numeric,1,1) as ID1516 into ' + @tmpTableName + ' ' + @sqlQuery2
end
else --//不带FROM的表名
begin
set @sqlQuery = 'select *,IDENTITY(numeric,1,1) as ID1516 into ' + @tmpTableName + ' from' + @sqlQuery
end
exec(@sqlQuery) --//建立并初始化临时表数据
declare @indexStart varchar(20),@indexEnd varchar(20)
set @indexStart = cast((@pageIndex-1)*@pageSize+1 as varchar(20)) --//数据起始行ID
set @indexEnd = cast(@pageIndex * @pageSize as varchar(20)) --//数据结束行ID
exec('select * from ' + @tmpTableName + ' where ID1516 between ' + @indexStart + ' and ' + @indexEnd) --//检索该页数据
exec('select max(ID1516) as recordCount from ' + @tmpTableName) --//提取总条数
exec('drop table ' + @tmpTableName) --//删除临时表
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO
C#中常用的分页存储过程小结
表中主键必须为标识列,[ID] int IDENTITY (1,1)//每次自增一
1.分页方案一:(利用Not In和SELECT TOP分页)
语句形式:
复制代码代码如下:
SELECT TOP 10 *
FROM TestTable
WHERE (ID NOT IN
(SELECT TOP 20 id
FROM TestTable
ORDER BY id))
ORDER BY ID
SELECT TOP 页大小 *
FROM TestTable
WHERE (ID NOT IN
(SELECT TOP 页大小*页数 id
FROM 表
ORDER BY id))
ORDER BY ID
2.分页方案二:(利用ID大于多少和SELECT TOP分页)
语句形式:
复制代码代码如下:
SELECT TOP 10 *
FROM TestTable
WHERE (ID >
(SELECT MAX(id)
FROM (SELECT TOP 20 id
FROM TestTable
ORDER BY id) AS T))
ORDER BY ID
SELECT TOP 页大小 *
FROM TestTable
WHERE (ID >
(SELECT MAX(id)
FROM (SELECT TOP 页大小*页数 id
FROM 表
ORDER BY id) AS T))
ORDER BY ID
3.分页方案三:(利用SQL的游标存储过程分页)
复制代码代码如下:
create procedure SqlPager
@sqlstr nvarchar(4000), --查询字符串
@currentpage int, --第N页
@pagesize int --每页行数
as
set nocount on
declare @P1 int, --P1是游标的id
@rowcount int
exec sp_cursoropen @P1 output,@sqlstr,@scrollopt=1,@ccopt=1, @rowcount=@rowcount output
select ceiling(1.0*@rowcount/@pagesize) as 总页数--,@rowcount as 总行数,@currentpage as 当前页
set @currentpage=(@currentpage-1)*@pagesize+1
exec sp_cursorfetch @P1,16,@currentpage,@pagesize
exec sp_cursorclose @P1
set nocount off
4.
复制代码代码如下:
CREATE Procedure FramWorkPage
@TableName varchar(50), --表名
@Fields varchar(5000) = '*', --字段名(全部字段为*)
@OrderField varchar(5000), --排序字段(必须!支持多字段)
@sqlWhere varchar(5000) = Null,--条件语句(不用加where)
@pageSize int, --每页多少条记录
@pageIndex int = 1 , --指定当前为第几页
@TotalPage int output, --返回条数
@OrderType bit -- 设置排序类型,1 升序 0 值则降序
as
begin
declare @strOrder varchar(400) -- 排序类型
Begin Tran --开始事务
Declare @sql nvarchar(4000);
Declare @totalRecord int;
--计算总记录数
if (@SqlWhere ='''' or @SqlWhere='' or @sqlWhere is NULL)
set @sql = 'select @totalRecord = count(*) from ' + @TableName
else
set @sql = 'select @totalRecord = count(*) from ' + @TableName + ' where ' + @sqlWhere
EXEC sp_executesql @sql,N'@totalRecord int OUTPUT',@totalRecord OUTPUT--计算总记录数
--计算总页数
select @TotalPage=@totalRecord --CEILING((@totalRecord+0.0)/@PageSize)
if @OrderType = 0
begin
set @strOrder = ' order by [' + @OrderField +'] desc'
--如果@OrderType是0,就执行降序,这句很重要!
end
else
begin
set @strOrder = ' order by [' + @OrderField +'] asc'
end
if (@SqlWhere ='''' or @SqlWhere='' or @sqlWhere is NULL)
set @sql = 'Select * FROM (select ROW_NUMBER() Over( '+@strOrder+' ) as rowId,' + @Fields + ' from ' + @TableName
else
set @sql = 'Select * FROM (select ROW_NUMBER() Over( '+@strOrder+' ) as rowId,' + @Fields + ' from ' + @TableName + ' where ' + @SqlWhere
--处理页数超出范围情况
if @PageIndex<=0
Set @pageIndex = 1
if @pageIndex>@TotalPage
Set @pageIndex = @TotalPage
--处理开始点和结束点
Declare @StartRecord int
Declare @EndRecord int
set @StartRecord = (@pageIndex-1)*@PageSize + 1
set @EndRecord = @StartRecord + @pageSize - 1
if @OrderType = 0
begin
set @strOrder = ' order by rowid desc'
--如果@OrderType是0,就执行降序,这句很重要!
end
else
begin
set @strOrder = ' order by rowid asc'
end
--继续合成sql语句
set @Sql = @Sql + ') as ' + @TableName + ' where rowId between ' + Convert(varchar(50),@StartRecord) + ' and ' + Convert(varchar(50),@EndRecord) + ' '+@strOrder
-- print @sql
Exec(@Sql)
---------------------------------------------------
If @@Error <> 0
Begin
RollBack Tran
Return -1
End
Else
Begin
Commit Tran
Return @totalRecord ---返回记录总数
End
end