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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?.
6 rows affected
| ts | foo_id | bar_id |
|---|---|---|
| 1612344312 | foo_id_1 | bar_id_1 |
| 1612344311 | foo_id_1 | bar_id_1 |
| 1612344310 | foo_id_2 | bar_id_1 |
| 1612344309 | foo_id_2 | bar_id_1 |
| 1612344308 | foo_id_3 | bar_id_2 |
| 1612344307 | foo_id_3 | bar_id_2 |
| bar_id | count | avg |
|---|---|---|
| bar_id_1 | 2 | 1.00000000000000000000 |
| bar_id_2 | 1 | 1.00000000000000000000 |