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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
SELECT 10
| song_id | date |
|---|---|
| 1 | 2020-11-18 |
| 1 | 2020-11-19 |
| 1 | 2020-11-20 |
| 1 | 2020-11-21 |
| 1 | 2020-11-22 |
| 2 | 2020-11-18 |
| 2 | 2020-11-19 |
| 2 | 2020-11-20 |
| 2 | 2020-11-21 |
| 2 | 2020-11-22 |
SELECT 10
| song_id | date |
|---|---|
| 1 | 2020-11-19 |
| 1 | 2020-11-20 |
| 1 | 2020-11-21 |
| 2 | 2020-11-19 |
| 2 | 2020-11-20 |
| 2 | 2020-11-21 |
SELECT 6