-- Optional PHP-compatible schema preparation. Review and apply explicitly to the intended database.
-- No account, permission, or configuration changes; does not enable MASK_EMP_CSC_MATRIX_ENABLED.
-- Deliberately fails when a table already exists: inspect its engine, columns and duplicates first.
CREATE TABLE employeecostcenter (
    emp_id INT NOT NULL,
    csc_id INT NOT NULL,
    PRIMARY KEY (emp_id, csc_id),
    KEY costcenter_employee (csc_id, emp_id)
) ENGINE=InnoDB;