电脑技术学习

分页存储过程2005

dn001

Alter Procedure [dbo].[up_Page2005]
@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;--返回总页数
as
begin

Begin Tran --开始事务

Declare @sql nvarchar(4000);
Declare @totalRecord int;;

--计算总记录数

if (@SqlWhere='' or @sqlWhere=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=CEILING((@totalRecord+0.0)/@PageSize)

if (@SqlWhere='' or @sqlWhere=NULL)
set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField + ') as rowId,' + @Fields + ' from ' + @TableName
else
set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField + ') 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

--继续合成sql语句
set @Sql = @Sql + ') as ' + @TableName + ' where rowId between ' + Convert(varchar(50),@StartRecord) + ' and ' +; Convert(varchar(50),@EndRecord)

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
http://www.cnblogs.com/evernory/archive/2006/11/15/561254.html