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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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| id | runner | km_run | disabled |
|---|---|---|---|
| 1 | mary | 3.5 | t |
| 2 | anna | 1.5 | f |
| 3 | john | 6.5 | f |
| 4 | bill | 1.5 | f |
| 5 | jess | 6.2 | t |
| 6 | jack | 2.5 | f |
| 7 | mary | 0.5 | t |
| id | runner | km_run | disabled |
|---|---|---|---|
| 1 | mary | 3.5 | t |
| 2 | anna | 1.5 | f |
| 3 | john | 6.5 | f |
| 4 | bill | 1.5 | f |
| 5 | jess | 6.2 | t |
| 6 | jack | 2.5 | f |