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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?.
4 rows affected
| id | name | score |
|---|---|---|
| 1 | Mary | 0.40000000000000000000 |
| 4 | Carl | 0.25000000000000000000 |
| 2 | John | 0.20000000000000000000 |
| 3 | Ann | 0.16666666666666666667 |