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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 8
| company | json_array | plain_array | status |
|---|---|---|---|
| American | [{"U202" : 200}, {"I034" : 300}] | {"(U202,200)","(I034,300)"} | Met |
| Coastal | [{"A384" : 500}] | {"(A384,500)"} | Met |
| Tester | [{"P034" : 300}] | {"(P034,300)"} | Failed |
SELECT 3