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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?.
| starts_at | overlap_minutes |
|---|---|
| 2020-05-11 08:00:00 | null |
| 2020-05-11 09:00:00 | 20 |
| 2020-05-11 10:00:00 | 13 |
| 2020-05-11 11:00:00 | null |