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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 4
| customers_xml |
|---|
| <Customer><Id>1</Id><FirstName>François</FirstName><LastName>Tremblay</LastName><City>Montreal</City><State>QC</State></Customer> |
| <Customer><Id>2</Id><FirstName>Bjørn</FirstName><LastName>Hansen</LastName><City>Oslo</City><State></State></Customer> |
SELECT 2