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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 1
INSERT 0 1
INSERT 0 1
| xmlelement |
|---|
| <Root><x>1</x><y>ABC</y></Root> |
| <Root><x>2</x></Root> |
| <Root><x>3</x></Root> |
SELECT 3