C#中常用的分页存储过程小结

2010-05-23 01:55:07 作者：

C#中常用的分页存储过程小结，需要利用存储过程分页的朋友可以参考下。

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：

 
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 

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 

通过上面这些东西的学习。我想一定可以找到一种满意的答案。。。

C#中常用的分页存储过程小结

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