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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?.
| enrollment_info |
|---|
| [{"courses": {"course-1": {"graduated": false}, "course-5": {"graduated": true}}}, {"courses": {"course-6": {"graduated": false}}}] |
| [{"courses": {"course-5": {"graduated": true}, "course-12": {"graduated": false}}}] |
SELECT 2