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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
INSERT 0 1
INSERT 0 1
INSERT 0 1
| location_id | lat | long | speed | rn1 | rn2 | cnt |
|---|---|---|---|---|---|---|
| 101241 | 0.12 | 1.10 | 0.0 | 1 | 1 | 3 |
| 101242 | 0.12 | 1.10 | 0.0 | 2 | 2 | 3 |
| 101243 | 0.12 | 1.10 | 0.0 | 3 | 3 | 3 |
SELECT 3