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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 5
vendor | startdate | enddate | grp |
---|---|---|---|
Vendor 1 | 2017-01-01 | 2017-04-15 | 1 |
Vendor 2 | 2017-04-16 | 2017-07-12 | 3 |
Vendor 1 | 2017-07-03 | 2017-09-30 | 2 |
SELECT 3