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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 series (program varchar(100))
INSERT INTO series VALUES ('Christopher Columbus (this is what I need to remove)'),
('Mickey Mouse'),
('American Gladiator (parenthetical)')
3 rows affected
SELECT left("program",
CASE WHEN POSITION('(' IN "program") = 0 tHEN LENGTH("program")
ELSE POSITION('(' IN "program") -1 END ) FROM series
| left |
|---|
| Christopher Columbus |
| Mickey Mouse |
| American Gladiator |