Oracle Top 5 站点的 5 大问题答案

【问题标题】：Oracle Top 5 Problems of Top 5 SitesOracle Top 5 站点的 5 大问题
【发布时间】：2021-02-24 10:53:23
【问题描述】：

大家好，我是这个版块的新手，以前我总是匿名查看，但现在我有一个特定的问题，我找不到答案。

我有两个语句分别做得很好

声明 1：选择问题最多的网站

WITH ordered_query AS
(SELECT debitorid, objectid, count(incident) as CTINCI
   FROM   ssrs_tblx_sla STSLA
   WHERE Debitorid = :Debitor 
   group by debitorid, objectid
   ORDER BY count(Incident) DESC, debitorid)
SELECT debitorid, objectid, CTINCI
FROM   ordered_query
WHERE  rownum <= 5

声明 2：网站的大多数错误代码

WITH ordered_query AS
  (SELECT debitorid, objectid, errorcode, count(incident) as CTINCI
   FROM   ssrs_tblx_sla STSLA
   WHERE Debitorid = :Debitor 
   and   objectid = :Objectid 
   group by debitorid, objectid, errorcode
   ORDER BY count(Incident) DESC, debitorid)
SELECT debitorid, objectid, errorcode, CTINCI
FROM   ordered_query
WHERE  rownum <= 5

在这两个语句中，我在 where 语句中使用 oracle 参数。

现在我想将它们组合起来并通过 LEFT JOIN 语句进行尝试，但似乎我不能在语句 2 的 where 子句中使用语句 1 的值。

目标：我想获得事件数量最多的前 5 个站点，并且每个站点的每个错误代码中事件数量最多的前 5 个站点

有人知道我做错了什么吗？我有点迷茫

select  T5S.Debitorid
,       T5S.Objectid
,       T5S.CTINCI as SiteTotal
,       T5P.ERRORCODE
,       T5P.CTINI as ERCTotal
FROM
        (WITH ordered_query AS
            (SELECT debitorid, objectid, count(incident) as CTINCI
            FROM   ssrs_tblx_sla STSLA
            WHERE Debitorid = :Debitor 
            group by debitorid, objectid
            ORDER BY count(Incident) DESC, debitorid)
        SELECT debitorid, objectid, CTINCI
        FROM   ordered_query
        WHERE  rownum <= 5
        ) T5S
LEFT JOIN
        (WITH ordered_query AS
            (SELECT debitorid, objectid, errorcode, count(incident) as CTINCI
            FROM   ssrs_tblx_sla STSLA
            WHERE Debitorid = T5S.Debitorid 
            and   objectid = T5S.Objectid 
            group by debitorid, objectid, errorcode
            ORDER BY count(Incident) DESC, debitorid)
        SELECT debitorid, objectid, errorcode, CTINCI
        FROM   ordered_query
        WHERE  rownum <= 5
        ) T5P
ON      T5S.Debitorid = T5P.DebitorId and T5S.objectid=T5P.objectid

oracle给我的错误码是：

ORA-00904：“T5S”。“OBJECTID”：标识符无效
00904. 00000 - “%s：无效标识符”
*原因：
*行动：
Zeile 的 Fehler：20 斯帕尔特：56

【问题讨论】：

标签： oracle join parameters row-number with-statement

【解决方案1】：

对我来说，它看起来像这样（但我可能错了；无法测试，我没有你的表）：

with 
ordered_query as
  (select debitorid, objectid, count(incident) as ctinci
     from ssrs_tblx_sla stsla
    where debitorid = :debitor 
    group by debitorid, objectid
    order by count(incident) desc, debitorid
  ),
t5s as
  (select debitorid, objectid, ctinci
     from ordered_query
    where rownum <= 5
  ),    
ordered_query_2 as
  (select debitorid, objectid, errorcode, count(incident) as ctinci
     from ssrs_tblx_sla stsla join t5s on t5s.debitorid = stsla.debitorid
                                      and t5s.objectid = stsla.objectid
    group by debitorid, objectid, errorcode
    order by count(incident) desc, debitorid)
  ),
t5p as
  (select debitorid, objectid, errorcode, ctinci
     from ordered_query_2
    where rownum <= 5
  )
--
select  t5s.debitorid,
        t5s.objectid,
        t5s.ctinci as sitetotal,
        t5p.errorcode,
        t5p.ctini as erctotal,
from t5s left join t5p t5s.debitorid = t5p.debitorid and t5s.objectid=t5p.objectid;

【讨论】：