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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 6
CREATE TABLE
INSERT 0 4
| id_en | letter_en | id_de | letter_de |
|---|---|---|---|
| 1 | A | 2 | Ä |
| 1 | A | 3 | A |
| 4 | O | 5 | O |
| 4 | O | 6 | Ö |
SELECT 4