By using db<>fiddle, you agree to license everything you submit by Creative Commons CC0.
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 4
id | age | avg_age |
---|---|---|
1 | 1-5 years | 3 |
2 | 6-10 | 8 |
3 | 11 | 11 |
4 | 18-21 years | 19.5 |
SELECT 4
id | age | avg_age |
---|---|---|
1 | 1-5 years | 3 |
3 | 11 | 11 |
2 | 6-10 | 8 |
4 | 18-21 years | 19.5 |
SELECT 4