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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 8
CREATE TABLE
INSERT 0 3
date pageviews weighted_moving_average
2020-02-01 42 null
2020-02-02 3 null
2020-02-03 216 87
2020-02-04 186 135
2020-02-05 510 304
2020-02-06 419 371.666666666667
2020-02-07 64 331
2020-02-09 230 98
SELECT 8