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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?.
SELECT *,
SUM(perc) OVER ()
FROM (
-- YOUR QUERY GOES HERE
SELECT generate_series(1,10) AS perc
) j
| perc | sum |
|---|---|
| 1 | 55 |
| 2 | 55 |
| 3 | 55 |
| 4 | 55 |
| 5 | 55 |
| 6 | 55 |
| 7 | 55 |
| 8 | 55 |
| 9 | 55 |
| 10 | 55 |
SELECT *,
SUM(perc) OVER (RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING)
FROM (
-- YOUR QUERY GOES HERE
SELECT generate_series(1,10) AS perc
) j
| perc | sum |
|---|---|
| 1 | 55 |
| 2 | 55 |
| 3 | 55 |
| 4 | 55 |
| 5 | 55 |
| 6 | 55 |
| 7 | 55 |
| 8 | 55 |
| 9 | 55 |
| 10 | 55 |