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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 DOMAIN
| schema | name | underlying_type | not_null | collation | default | check_constraints |
|---|---|---|---|---|---|---|
| public | us_postal_code | character varying(10) | f | null | null | CHECK (VALUE::text ~ '^\d{5}$'::text OR VALUE::text ~ '^\d{5}-\d{4}$'::text) |
SELECT 1