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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?.
| saleid | itemid | price | createdat | rate | ?column? |
|---|---|---|---|---|---|
| 1 | a | 200 | 2022-08-17 | 0.25 | 50.00 |
| 2 | b | 400 | 2022-08-19 | 0.25 | 100.00 |
| 3 | c | 500 | 2022-09-04 | 0.20 | 100.00 |