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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 3
| id | cost_1 | quantity_1 | cost_2 | quantity_2 | total_1 | total_2 | total_3 |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 2 | 3 | 4 | 2 | 12 | 14 |
| 2 | 3 | 5 | 7 | 9 | 15 | 63 | 78 |
| 3 | 10 | 5 | 20 | 2 | 50 | 40 | 90 |
SELECT 3