Postgre -Änderungstabelle Fremdschlüssel
ALTER TABLE distributors ADD CONSTRAINT distfk FOREIGN KEY (address) REFERENCES addresses (address) MATCH FULL;
Bad Bee
ALTER TABLE distributors ADD CONSTRAINT distfk FOREIGN KEY (address) REFERENCES addresses (address) MATCH FULL;
ALTER TABLE table_a
ADD FOREIGN KEY (col_table_a) REFERENCES table_b(pk_table_b);ALTER TABLE orders
ADD CONSTRAINT fk_orders_customers FOREIGN KEY (customer_id) REFERENCES customers (id);