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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?.
| last_month_first_day | last_month_last_day |
|---|---|
| 2020-01-01 00:00:00+00 | 2020-01-31 00:00:00+00 |
| last_month_first_day | last_month_last_day |
|---|---|
| 2020-01-01 | 2020-01-31 |