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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?.
CREATE TABLE
INSERT 0 5
CREATE TABLE
INSERT 0 6
id_a | id_b |
---|---|
1 | 1 |
2 | null |
3 | 3 |
4 | null |
5 | 5 |
null | 6 |
null | 8 |
null | 9 |
SELECT 8