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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
CREATE TABLE
INSERT 0 3
INSERT 0 3
| a_id | a_prop | b_id | b_prop |
|---|---|---|---|
| 1 | blah | 1 | blah |
| 2 | blah | null | null |
| null | null | 3 | blah |
SELECT 3