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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 my_table (syndata jsonb);
insert into my_table values
('{"1": {"score": 1.0}, "2": {"score": 2.0}, "3": {"score": 3.0}}');
CREATE TABLE
INSERT 0 1
select syndata->(num::text)
from my_table
cross join
generate_series(1, 2) ser(num)
| ?column? |
|---|
| {"score": 1.0} |
| {"score": 2.0} |
SELECT 2