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  • [Oracle] Oracle中和MySql的limit对应的方法

    MySql很贴心,有个限制范围查询的limit函数,用起来也很方便,SQL不用嵌套。如下:

    select id,name,age,cdate as ctime from emp order by id limit #{start},#{size}

    老旧的Oracle用rownum也可以实现类似的功能,只是需要嵌套SQL,用起来不方便,具体如下:

    select
    
            *
    
    from
    
              (select
    
                          rownum no,id,name,age,createdtime as ctime
    
               from tb01
    
               where rownum<=10
    
               order by id) tbTmp
    
    where no>4

    这样把5,6,7,8,9,10六条记录都取出来了。

    整句是这样的:

    select * from (select rownum no,id,name,age,createdtime as ctime from tb01 where rownum<=10 order by id) tbTmp where no>4

    或者:

    select * from (select rownum no,id,name,age,createdtime as ctime from tb01 where rownum<=10 order by id) where no>4

    Oracle这种方式,还是稍显别扭,希望在其新版本能顺应民心加入limit函数。

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  • 原文地址:https://www.cnblogs.com/heyang78/p/11830159.html
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