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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 12
| menu | txt |
|---|---|
| 1 | A1 |
| 1 | A2 |
| 2 | A1B1 |
| 2 | A1B2 |
| 2 | A2B1 |
| 2 | A2B2 |
| 3 | A1B1:C1 |
| 3 | A1B1:C2 |
| 3 | A1B2:C1 |
| 3 | A1B2:C2 |
| 3 | A2B1:C1 |
| 3 | A2B1:C2 |
| 3 | A2B2:C1 |
| 3 | A2B2:C2 |
SELECT 14