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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?.
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| apple_id | phone_id | ipad_id | phone_id | ipad_id |
|---|---|---|---|---|
| 1 | 1001 | 2001 | 111 | 222 |
| 3 | 1003 | 2003 | 444 | null |