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?.
2 rows affected
3 rows affected
b_a | f_a | id |
---|---|---|
x | a | 1 |
y | b | 2 |
z | b | 2 |
2 rows affected
id | a |
---|---|
1 | x |
2 | y |