-- Place your SQL code here
USE vn;
CREATE OR REPLACE TABLE `operator` (
  `workerFk` int(10) unsigned NOT NULL,
  `numberOfWagons` int(11) DEFAULT 1,
  PRIMARY KEY (`workerFk`),
  KEY `operator_FK` (`workerFk`),
  CONSTRAINT `operator_FK` FOREIGN KEY (`workerFk`) REFERENCES `worker` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_unicode_ci;

INSERT INTO vn.operator (workerFk, numberOfWagons)
SELECT id, 2 FROM vn.worker WHERE sectorFk is not null;
