[英]Oracle query: how do I limit the returned records to only those having a count > 1 but show full results?
[英]How do I use 'id' results of a COUNT, GROUP BY, and HAVING query to perform another query with only those ids
我有一个包含 32 个 ID 的表,每个 ID 应该有 31 行(31 个日期)。 我想要 select ids 及其所有日期仅适用于少于 31 行(31 个日期)的 ids。
我试过这个和其他一些东西:
SELECT id, date
FROM daily_activity
WHERE id IN(SELECT id, COUNT(id) AS num_days
FROM daily_activity
GROUP by id
HAVING num_days < 31)"
ORDER BY id, date
谢谢
一种解决方案是将count
用作window function
with ids as (
select *, Count(*) over(partition by id) tot
from mytable
)
select id, date
from ids
where tot<31
你可以试试这个也许它会为你工作:
SELECT id, date
FROM daily_activity
where( select COUNT(daily_activity2.id)
FROM daily_activity daily_activity2
where daily_activity.id=daily_activity2.id
group by daily_activity2.id ) < 31
ORDER BY id, date
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