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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
INSERT 0 3
INSERT 0 4
date_1
2001-01-01
2002-02-02
2013-05-05
SELECT 3
date_2
2004-04-02
2006-01-01
2012-05-05
2014-04-04
SELECT 4
max
2014-04-04
SELECT 1