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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?.
CREATE TABLE
INSERT 0 4
| tm | consumedfueld | processedvolume |
|---|---|---|
| 2021-09-23 05:00:00 | 10 | 1 |
| 2021-09-23 06:00:00 | 20 | 1 |
| 2021-09-23 07:00:00 | 2 | 15 |
| 2021-09-23 08:00:00 | null | null |
SELECT 4