ForestAdmin/lumber

test-fixtures/postgres/doubleref.sql

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DROP TABLE IF EXISTS doubleref;

CREATE TABLE doubleref (
  car_no INT NOT NULL,
  no_car INT NOT NULL,
  FOREIGN KEY (car_no)  REFERENCES cars(id),
  FOREIGN KEY (no_car)  REFERENCES cars(id),
  PRIMARY KEY (car_no)
);

ALTER TABLE doubleref
  ADD CONSTRAINT same_car_no_fk
  FOREIGN KEY (car_no)
  REFERENCES cars(id);