分页存储过程2005 _数据库技巧

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