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Help with an interesting Postgres question: Why isn't an Index Only Scan used on a partition accessed via the parent table?.
| time_start | time_end | action |
|---|---|---|
| 2023-07-27 04:52:00.000 | 2023-07-27 04:52:00.000 | running |
| 2023-07-27 04:55:00.000 | 2023-07-27 04:59:00.000 | walking |
| 2023-07-27 05:01:00.000 | 2023-07-27 05:01:00.000 | sitting |
| 2023-07-27 05:06:00.000 | 2023-07-27 05:06:00.000 | walking |
| 2023-07-27 05:10:00.000 | 2023-07-27 05:10:00.000 | running |
SELECT 5