By using db<>fiddle, you agree to license everything you submit by Creative Commons CC0.
Help with an interesting Postgres question: Why isn't an Index Only Scan used on a partition accessed via the parent table?.
CREATE TABLE
INSERT 0 12
| begin_time | end_time | events |
|---|---|---|
| 12:00:00 | 16:00:00 | {"(13:00:00,8)","(14:00:00,4)","(15:00:00,2)"} |
| 16:00:00 | 20:00:00 | {"(17:00:00,9)","(18:00:00,5)","(19:00:00,8)"} |
| 20:00:00 | 23:00:00 | {"(21:00:00,1)","(22:00:00,3)"} |
SELECT 3