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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?.
3 rows affected
child_id | parent_id | lvl |
---|---|---|
1 | 1 | 1 |
2 | 2 | 1 |
2 | 1 | 2 |
3 | 3 | 1 |
3 | 2 | 2 |
3 | 1 | 3 |