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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?.
5 rows affected
3 rows affected
date_ name qty_
2019-01-15 Boston null
2019-01-15 London 10
2019-01-15 Paris null
2019-01-16 Boston 30
2019-01-16 London null
2019-01-16 Paris 20
2019-01-17 Boston 31
2019-01-17 London 11
2019-01-17 Paris null