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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 1
| id | val_a | val_b | val_sum |
|---|---|---|---|
| 1 | 1 | 2 | 3 |
SELECT 1
ALTER TABLE
ALTER TABLE
| id | val_a | val_b | val_sum |
|---|---|---|---|
| 1 | 1 | 2 | 4 |
SELECT 1