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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 12
SELECT 3
id | set_id | number | sequence_id | numbers |
---|---|---|---|---|
2 | 1 | 3 | 1 | 3,4 |
5 | 1 | 3 | 1 | 3,4 |
8 | 2 | 3 | 1 | 3,4 |
12 | 3 | 9 | 2 | 9 |
SELECT 4
set_id | sequence_id | ?column? | cnt | min |
---|---|---|---|---|
1 | 1 | 1 | 2 | 2 |
1 | 1 | 4 | 2 | 5 |
2 | 1 | 7 | 2 | 8 |
3 | 2 | 11 | 1 | 12 |
SELECT 4