C#中常用的分頁存儲(chǔ)過程小結(jié)

更新時(shí)間：2010年05月23日 01:55:07 作者：

C#中常用的分頁存儲(chǔ)過程小結(jié)，需要利用存儲(chǔ)過程分頁的朋友可以參考下。

表中主鍵必須為標(biāo)識(shí)列，[ID] int IDENTITY (1,1)//每次自增一
1.分頁方案一：(利用Not In和SELECT TOP分頁)
語句形式：

 
SELECT TOP 10 * 
FROM TestTable 
WHERE (ID NOT IN 
(SELECT TOP 20 id 
FROM TestTable 
ORDER BY id)) 
ORDER BY ID 


SELECT TOP 頁大小 * 
FROM TestTable 
WHERE (ID NOT IN 
(SELECT TOP 頁大小*頁數(shù) id 
FROM 表 
ORDER BY id)) 
ORDER BY ID 

2.分頁方案二：(利用ID大于多少和SELECT TOP分頁）
語句形式：

復(fù)制代碼代碼如下:

 
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 頁大小 * 
FROM TestTable 
WHERE (ID > 
(SELECT MAX(id) 
FROM (SELECT TOP 頁大小*頁數(shù) id 
FROM 表 
ORDER BY id) AS T)) 
ORDER BY ID 

3.分頁方案三：(利用SQL的游標(biāo)存儲(chǔ)過程分頁)

復(fù)制代碼代碼如下:

 
create procedure SqlPager 
@sqlstr nvarchar(4000), --查詢字符串 
@currentpage int, --第N頁 
@pagesize int --每頁行數(shù) 
as 
set nocount on 
declare @P1 int, --P1是游標(biāo)的id 
@rowcount int 
exec sp_cursoropen @P1 output,@sqlstr,@scrollopt=1,@ccopt=1, @rowcount=@rowcount output 
select ceiling(1.0*@rowcount/@pagesize) as 總頁數(shù)--,@rowcount as 總行數(shù),@currentpage as 當(dāng)前頁 
set @currentpage=(@currentpage-1)*@pagesize+1 
exec sp_cursorfetch @P1,16,@currentpage,@pagesize 
exec sp_cursorclose @P1 
set nocount off 

復(fù)制代碼代碼如下:

 
CREATE Procedure FramWorkPage 
@TableName varchar(50), --表名 
@Fields varchar(5000) = '*', --字段名(全部字段為*) 
@OrderField varchar(5000), --排序字段(必須!支持多字段) 
@sqlWhere varchar(5000) = Null,--條件語句(不用加where) 
@pageSize int, --每頁多少條記錄 
@pageIndex int = 1 , --指定當(dāng)前為第幾頁 
@TotalPage int output, --返回條數(shù) 
@OrderType bit -- 設(shè)置排序類型,1 升序 0 值則降序 
as 
begin 
declare @strOrder varchar(400) -- 排序類型 

Begin Tran --開始事務(wù) 
Declare @sql nvarchar(4000); 
Declare @totalRecord int; 
--計(jì)算總記錄數(shù) 
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--計(jì)算總記錄數(shù) 

--計(jì)算總頁數(shù) 

select @TotalPage=@totalRecord --CEILING((@totalRecord+0.0)/@PageSize) 

if @OrderType = 0 
begin 
set @strOrder = ' order by [' + @OrderField +'] desc' 
--如果@OrderType是0，就執(zhí)行降序，這句很重要！ 
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 
--處理頁數(shù)超出范圍情況 
if @PageIndex<=0 
Set @pageIndex = 1 

if @pageIndex>@TotalPage 
Set @pageIndex = @TotalPage 

--處理開始點(diǎn)和結(jié)束點(diǎn) 
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，就執(zhí)行降序，這句很重要！ 
end 
else 
begin 
set @strOrder = ' order by rowid asc' 
end 
--繼續(xù)合成sql語句 
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 ---返回記錄總數(shù) 
End 
end 