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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?.
DROP TABLE
CREATE TABLE
INSERT 0 10
| id | name | depth |
|---|---|---|
| 2 | P2 | 1 |
| 3 | P3 | 1 |
| 4 | P4 | 1 |
| 5 | P5 | 2 |
| 6 | P6 | 2 |
| 7 | P7 | 2 |
| 8 | P8 | 2 |
| 9 | P9 | 2 |
| 10 | P10 | 2 |
SELECT 9