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关于分页办法

 2001-04-18 10:20:08 来源:WEB开发网   
核心提示:时间关系,没有经过完全测试,关于分页办法,这个是大概意思,CREATE PROCEDURE getnotes @forumID varchar(10), @a_intPageNo int , @a_intPageSize int, @rootID varchar(10)AS declare @m_intRecordNu
时间关系,没有经过完全测试,这个是大概意思。
CREATE PROCEDURE getnotes

  @forumID varchar(10),
  @a_intPageNo int ,
  @a_intPageSize int,
  @rootID varchar(10)
AS 
   declare @m_intRecordNumber int
   declare @m_intStartRecord int
   declare @pagecount int
   declare @temp int
   declare @end int
   declare @sql varchar(500)
   declare @bbsname varchar(25)
   declare @articles int
   declare @manager varchar(30)
   declare @selectrootID varchar(500)
   declare @temprootID varchar(10)

   select @m_intRecordNumber = @a_intPageSize * @a_intPageNo
   select @m_intStartRecord = @a_intPageSize * (@a_intPageNo - 1) + 1

   set nocount on    
   select @bbsname=subjectname,@manager=manager,@articles=articles from bbs_subjects where subjectID=@forumID
   if @rootID='0'
     begin
     -- select @sql='declare m_curTemp Scroll cursor for select ID,title,shrink,rootID,orderID,pubtime,hits,bytes,username,email from bbs_forum_'+@forumID+' WHERE rootID in (select distinct rootID from bbs_forum_'+@forumID+' ) order by rootID desc,orderID asc'   
      select @sql='declare m_curTemp Scroll cursor for select rootID from bbs_forum_'+@forumID+' where rootID=parentID order by rootID desc'   
    end
   else
     select @sql='declare m_curTemp Scroll cursor for select ID,title,shrink,rootID,orderID,pubtime,hits,bytes,username,email from bbs_forum_'+@forumID+' where rootID='+@rootID+' order by orderID asc'   
   
   exec(@sql)
   open m_curTemp

    set @pagecount = case
      when @@cursor_rows % @a_intPageSize=0 then @@cursor_rows / @a_intPageSize
      when @@cursor_rows % @a_intPageSize<>0 then @@cursor_rows / @a_intPageSize+1
    end
    if @@cursor_rows<@a_intPageSize and @@cursor_rows>0
     begin
       select @pagecount=1
     end
   

  if @rootID='0'
   begin
     set @temp = 1
     set @selectrootID='0'
    fetch absolute @m_intStartRecord from m_curTemp into @temprootID
    while @@fetch_status = 0 and @temp < @a_intPageSize
       begin
          set @temp = @temp + 1
          select @selectrootID=@selectrootID+','+@temprootID
          fetch next from m_curTemp into @temprootID          
       end
     CLOSE m_curTemp
     DEALLOCATE m_curTemp
     set nocount off
     select 'pagecount' = @pagecount
     select 'bbsname'=@bbsname
     select 'manager'=@manager
     select 'articles'=@articles
     select @sql='declare curTemp Scroll cursor for select ID,title,shrink,rootID,orderID,Images,pubtime,hits,bytes,username,email from bbs_forum_'+@forumID+' where rootID in ('+@selectrootID+') order by rootID desc,orderID asc'
     exec(@sql)
     open curTemp
     fetch first from curTemp
     while @@fetch_status = 0
       begin
          fetch next from curTemp
       end
     CLOSE curTemp
     DEALLOCATE curTemp
    end
  else
    begin
      set @temp = 1   
      set nocount off
      fetch absolute @m_intStartRecord from m_curTemp
      while @@fetch_status = 0 and @temp < @a_intPageSize
      begin
          set @temp = @temp + 1
          fetch next from m_curTemp
      end
      CLOSE m_curTemp
      DEALLOCATE m_curTemp
    end

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