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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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| haus_id | angebot_id | status_id |
|---|---|---|
| 1 | 1 | null |
| 1 | 2 | null |
| 2 | 3 | 10 |
| 3 | 4 | null |