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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 jsonb_build_object('start', jsonb_build_object(
'inv', ((SELECT jsonb_agg(some_name)
FROM jsonb_build_object('foo', 1) AS some_name, generate_series(1,5)))));
| jsonb_build_object |
|---|
| {"start": {"inv": [{"foo": 1}, {"foo": 1}, {"foo": 1}, {"foo": 1}, {"foo": 1}]}} |
SELECT 1