Oracle/SQL - 选择指定范围的顺序记录 [英] Oracle/SQL - Select specified range of sequential records

问题描述

我试图从连接中选择记录的子集，从 5000 到 10000.过去我曾遇到过这样的查询，但它们的复杂程度略低.这是我尝试使用的查询，如果我删除 rownum/rnum 引用(以及外部选择)，我会按预期收到所有记录，因此我知道逻辑很好.

I'm tryint to select a subset of records, 5000 through 10000 from a join. I've gotten queries like this to work in the past, but they were slightly less complex. Here is the query I'm trying to use and if I remove the rownum/rnum references (and therefore the outer select) I receive all my records as expected so I know that logic is good.

SELECT      * 
    FROM    ( 
            SELECT  unique cl.riid_, 
                    rownum as rnum 
            FROM    <table 1> cl, <table 3> mil 
            WHERE   cl.opt = 0 AND 
                    (cl.st_ != 'QT' OR cl.st_ IS NULL) AND 
                    cl.hh = 0 AND 
                    cl._ID_ = mil._ID_ AND 
                    mil.TYPE in (0, 1, 2, 3, 4) AND 
                    EXISTS 
                        ( SELECT    'x' 
                            FROM    <table 2> sub 
                            WHERE   cl.ea_ = lower(sub.ea_) AND 
                                    sub.status = 0 AND 
                                    lower(sub.subscription) = 'partner' 
                        ) AND 
                    rownum <= 10000 
            ) 
    where   rnum > 5000

因此，当我运行此查询时，我从我们的系统收到此消息(这不是 Oracle cli 接口，而是存在于其顶部的 Web 层，因此如果它异常，请忽略错误 msg)

So when I run this query I receive this message from our system (this is not an Oracle cli interface, but rather a web layer that exists over the top of it so please bare with the error msg if it's out of the ordinary)

'错误:选择查看的资源无效.在查看其数据之前，您可能需要重新创建或修复该对象.'

资源将是查询的结果.

那么有没有人知道发生了什么或有更好的方法来做到这一点?

So does anyone have an idea of whats going on or a better way to do this?

谢谢！

推荐答案

我相信您正在 Oracle 中寻找这样的东西:

I believe you're looking for something like this in Oracle:

select * 
  from ( select a.*, rownum rnum
           from ( YOUR_QUERY_GOES_HERE -- including the order by ) a
          where rownum <= MAX_ROWS )
 where rnum >= MIN_ROWS
/

来自 Ask Tom 的好讨论是 这里

Good discussion from Ask Tom is here

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