• 用oracle中的Row_Number实现分页


    Row_Number实现分页

     

    1:首先是

        select ROW_NUMBER() over(order by id asc) as 'rowNumber', * from table1

       生成带序号的集合

    2:再查询该集合的 第 1  到第 5条数据

        select * from 
        (select ROW_NUMBER() over(order by id asc) as 'rowNumber', * from table1) as temp
        where rowNumber between 1 and 5

    完整的Sql语句

    declare @pagesize int; declare @pageindex int; set @pagesize = 3

    set @pageindex = 1; --第一页

    select * from (select ROW_NUMBER() over(order by id asc) as 'rowNumber', * from table1) as temp where rowNumber between (((@pageindex-1)*@pagesize)+1) and (@pageindex*@pagesize)

    set @pageindex = 2; --第二页

    select * from (select ROW_NUMBER() over(order by id asc) as 'rowNumber', * from table1) as temp where rowNumber between (((@pageindex-1)*@pagesize)+1) and (@pageindex*@pagesize)

    set @pageindex = 3; --第三页

    select * from (select ROW_NUMBER() over(order by id asc) as 'rowNumber', * from table1) as temp where rowNumber between (((@pageindex-1)*@pagesize)+1) and (@pageindex*@pagesize)

    set @pageindex = 4;--第四页

    select * from (select ROW_NUMBER() over(order by id asc) as 'rowNumber', * from table1) as temp where rowNumber between (((@pageindex-1)*@pagesize)+1) and (@pageindex*@pagesize)

    下面我们来写个存储过程分页

    ------------------------------

    Alter Procedure PagePager   

    @TableName varchar(80),   

    @File varchar(1000),---   

    @Where varchar(500),---带and连接   

    @OrderFile varchar(100), -- 排序字段   

    @OrderType varchar(10),--asc:顺序,desc:倒序   

    @PageSize varchar(10), --   

    @PageIndex varchar(10) --  

    as      

    if(ISNULL(@OrderFile, '') = '')   

    begin     

    set @OrderFile = 'ID';   

    end   

    if(ISNULL(@OrderType,'') = '')   

    begin     

    set @OrderType = 'asc'   

    end   

    if(ISNULL(@File,'') = '')   

    begin     

    set @File = '*'   

    end      

    declare @select varchar(8000)   

    set @select = '    select ' + @File + ' from     (       select *,ROW_NUMBER() over(order by ' + @OrderFile + '  '+ @OrderType + ') as ''rowNumber''    from ' + @TableName + '    where 1=1 ' + @Where + '     )  temp where  rowNumber between (((' + @PageIndex + ' - 1) * ' + @PageSize + ')+1) and (' + @PageIndex + '*'+ @PageSize+')'   

    exec(@select)

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  • 原文地址:https://www.cnblogs.com/wangyonglong/p/5143701.html
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