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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 | contact_id_a | contact_id_b | min_id | ids | lev |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 1 | {1} | 1 |
| 2 | 1 | 2 | 1 | {1,2} | 2 |
| 3 | 2 | 1 | 1 | {2,1,3} | 3 |
| 4 | 3 | 4 | 4 | {4} | 1 |