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Developer-C 11.1
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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 salary ( employee_id integer NOT NULL, salary_data integer NOT NULL, salary_date date NOT NULL ); CREATE TABLE EMPLOYEE ( employee_id integer NOT NULL UNIQUE );
ALTER TABLE salary ALTER COLUMN salary_date SET DEFAULT current_date;
ALTER TABLE salary ADD CONSTRAINT FK_Salary_Employee_ID FOREIGN KEY(employee_id) REFERENCES EMPLOYEE(employee_id) ON UPDATE CASCADE ON DELETE CASCADE ;