此查询仅在我用“*”替换顶部选择列时才有效。我一直在阅读与我类似的其他问题，但我无法将他们的逻辑应用于我的情况。所有子查询都是相同的，只是它们根据“where”子句中的状态而变化。
每天都有更多的成功。故障和警告不会每天都发生，所以他们有一些我想做成0的空值。我希望所有的成功，警告和失败都与a.Start_date相关。
Select a.START_DATE, a.Successes, b.START_DATE, b.Failures, c.START_DATE, c.WARNINGS
FROM
(
Select
(Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END) "START_DATE",
NVL(count(job_id),0) as "Successes"
from NI_INFA_ACTIVITY_LOG_V
where State = 1
and
(:P1_JOB_SIZE_CHOOSER = 'Tiny' AND (1440*(END_TIME - START_TIME)) <= 1
OR
:P1_JOB_SIZE_CHOOSER = 'Small' AND (1440*(END_TIME - START_TIME)) > 1 AND
(1440*(END_TIME - START_TIME)) <= 5
OR
:P1_JOB_SIZE_CHOOSER = 'Medium' AND (1440*(END_TIME - START_TIME)) > 5 AND
(1440*(END_TIME - START_TIME)) <= 20
OR
:P1_JOB_SIZE_CHOOSER = 'Large' AND ((1440*(END_TIME - START_TIME)) > 20)
OR
:P1_JOB_SIZE_CHOOSER NOT IN('Small','Medium','Large','Tiny') AND (1440*(END_TIME - START_TIME)) > 0)
group by Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END
order by Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END
) a
left outer join
(
Select
(Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END) "START_DATE",
nvl(count(job_id),0) as "Failures"
from NI_INFA_ACTIVITY_LOG_V
where State = 3
and
(:P1_JOB_SIZE_CHOOSER = 'Tiny' AND (1440*(END_TIME - START_TIME)) <= 1
OR
:P1_JOB_SIZE_CHOOSER = 'Small' AND (1440*(END_TIME - START_TIME)) > 1 AND
(1440*(END_TIME - START_TIME)) <= 5
OR
:P1_JOB_SIZE_CHOOSER = 'Medium' AND (1440*(END_TIME - START_TIME)) > 5 AND
(1440*(END_TIME - START_TIME)) <= 20
OR
:P1_JOB_SIZE_CHOOSER = 'Large' AND ((1440*(END_TIME - START_TIME)) > 20)
OR
:P1_JOB_SIZE_CHOOSER NOT IN('Small','Medium','Large','Tiny') AND (1440*(END_TIME - START_TIME)) > 0)
group by Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END
order by Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END
) b
on
a.START_DATE = b.START_DATE
left outer join
(
Select
(Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END) "START_DATE",
nvl(count(job_id),0) as "Warnings"
from NI_INFA_ACTIVITY_LOG_V
where State = 2
and
(:P1_JOB_SIZE_CHOOSER = 'Tiny' AND (1440*(END_TIME - START_TIME)) <= 1
OR
:P1_JOB_SIZE_CHOOSER = 'Small' AND (1440*(END_TIME - START_TIME)) > 1 AND
(1440*(END_TIME - START_TIME)) <= 5
OR
:P1_JOB_SIZE_CHOOSER = 'Medium' AND (1440*(END_TIME - START_TIME)) > 5 AND
(1440*(END_TIME - START_TIME)) <= 20
OR
:P1_JOB_SIZE_CHOOSER = 'Large' AND ((1440*(END_TIME - START_TIME)) > 20)
OR
:P1_JOB_SIZE_CHOOSER NOT IN('Small','Medium','Large','Tiny') AND (1440*(END_TIME - START_TIME)) > 0)
group by Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END
order by Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END
) c
on
a.START_DATE = c.START_DATE
ORDER BY
a.START_DATE
最后，我希望结果如下：
Start_Date Successes Warnings Failures
6/1/2015 5 0 3
........ 8 15 4
6/30/2015 9 1 0
答案 0 :(得分：0)
替换
Select a.START_DATE, a.Successes, b.START_DATE, b.Failures, c.START_DATE, ...
通过
Select a."START_DATE", a."Successes", b."START_DATE", b."Failures", c."START_DATE", ...
答案 1 :(得分：0)
您已经为子查询中的（某些）别名使用了带引号的标识符，因此您必须引用外部选择中的别名，并且与您使用的情况完全匹配：
Select a.START_DATE, a."Successes",
b.START_DATE, b."Failures",
c.START_DATE, c."Warnings"
...
带引号的标识符很痛苦。如果您希望列标题是混合大小写，则可以在子查询中使用不带引号的标识符，并将外部查询中的最终引用名称应用为另一个别名;或让客户处理该显示问题。
由于start_date是连接条件，您可能不想要所有三个引用;并且要在结果集中获得零，您需要NVL失败和警告计数，因此您最好使用不带引号的标识符：
Select a.start_date "Start date", a."Successes",
nvl(b.failures, 0) "Failures", nvl(c.warnings, 0) "Warnings"
...
NVL(count(job_id),0) as successes
...
你已经拥有的NVL并没有做任何事情 - 它需要在外部查询中而不是如图所示 - 因为如果计数为空，则没有开始日期值来分组。
如果子查询确实如此相似，您可以将其简化为具有三个选择性计数的单个查询级别;类似的东西：
Select to_char(Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END, 'MM/DD/YYYY') as "Start date",
count(case when State = 1 then job_id end) as "Successes",
count(case when State = 3 then job_id end) as "Failures",
count(case when State = 2 then job_id end) as "Warnings"
from NI_INFA_ACTIVITY_LOG_V
where (:P1_JOB_SIZE_CHOOSER = 'Tiny'
AND (1440*(END_TIME - START_TIME)) <= 1)
OR (:P1_JOB_SIZE_CHOOSER = 'Small'
AND (1440*(END_TIME - START_TIME)) > 1
AND (1440*(END_TIME - START_TIME)) <= 5)
OR (:P1_JOB_SIZE_CHOOSER = 'Medium'
AND (1440*(END_TIME - START_TIME)) > 5
AND (1440*(END_TIME - START_TIME)) <= 20)
OR (:P1_JOB_SIZE_CHOOSER = 'Large'
AND (1440*(END_TIME - START_TIME)) > 20)
OR (:P1_JOB_SIZE_CHOOSER NOT IN ('Small','Medium','Large','Tiny')
AND (1440*(END_TIME - START_TIME)) > 0)
group by Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END
order by Case :P1_DATE_CHOOSER
WHEN 'Daily' THEN trunc(start_time)
WHEN 'Weekly' THEN trunc(start_time, 'WW')
WHEN 'Monthly' THEN trunc(start_time, 'MM')
END;
你的括号似乎也没有了，所以我试图纠正这些，但你可能一直在做一些我没有做过的故意......