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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?.
CREATE TABLE
INSERT 0 3
| person_id | first_name | last_name | full_name |
|---|---|---|---|
| 1 | Jon | Doe | Jon Doe |
| 2 | OnlyFirst | null | OnlyFirst |
| 3 | null | OnlyLast | OnlyLast |
SELECT 3