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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 10
| ts | status | flag |
|---|---|---|
| 1 | m | 1 |
| 2 | m | 1 |
| 3 | i | 1 |
| 4 | s | 1 |
| 5 | s | 1 |
| 6 | i | 2 |
| 7 | i | 2 |
| 8 | m | 2 |
| 9 | s | 2 |
| 10 | m | 3 |
SELECT 10