更新时间:2023-02-05 10:00:01
试试:
WITH t as (
SELECT time_series as trunc
FROM generate_series('2013-02-27 22:00'::timestamp, '2013-02-28 2:00',
'1 hour') as time_series
)
SELECT DISTINCT ON(t.trunc) t.trunc, e.id
FROM t
JOIN event e
ON e.created < t.trunc
ORDER BY t.trunc, e.created DESC
如果它太慢 - 告诉我.我会给你一个更快的查询.
If it is too slow - tell me. I will give you a faster query.