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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?.
12 rows affected
id instance_id value is_peak
1 1 a f
2 1 ap f
3 1 app f
4 1 appl f
5 2 b f
6 2 bo f
7 1 apple t
8 2 boa f
9 2 boat t
10 2 boa f
11 1 appl f
12 1 apply t
id instance_id value is_peak
7 1 apple t
9 2 boat t
12 1 apply t