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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?.
| id | name |
|---|---|
| 1 | Mark |
| 2 | David |
| 3 | Mike |
| 4 | Andrew |
| name | cities | brands |
|---|---|---|
| Mark | Chicago Moscow | null |
| David | Boston New York | toyota volvo |
| Andrew | null | bmw opel |