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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
CREATE TABLE
CREATE TABLE
CREATE TABLE
INSERT 0 2
INSERT 0 2
INSERT 0 3
INSERT 0 1
id
123
456
SELECT 2
id
456
SELECT 1
CREATE TABLE
CREATE TABLE
INSERT 0 3
INSERT 0 2
id
123
456
SELECT 2
id
456
SELECT 1