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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?.
| date_trunc | count |
|---|---|
| 2020-02-01 00:00:00+00 | 0 |
| 2020-03-01 00:00:00+00 | 1 |
| 2020-04-01 00:00:00+01 | 2 |
| 2020-05-01 00:00:00+01 | 2 |
| 2020-06-01 00:00:00+01 | 2 |