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?.
9 rows affected
| pname | in1 | unnest |
|---|---|---|
| a | 1 | 1 |
| b | 2 | 2 |
| b | 2 | 3 |
| c | 4 | 4 |
| c | 4 | 5 |
| c | 4 | 6 |
| d | 7 | 7 |
| d | 7 | 8 |
| d | 7 | 9 |
| d | 7 | 10 |
| e | 11 | 11 |
| f | 12 | 12 |
| g | null | null |
| g | null | 666 |
| h | null | null |
| i | null | null |