CREATE TABLE test (pk int primary key);
INSERT INTO test VALUES (0), (1);

CREATE TABLE test_info (id int, info varchar(255), test_pk int, primary key(id), foreign key (test_pk) references test(pk));

COPY test_info FROM STDIN (FORMAT CSV, HEADER TRUE);
id,info,test_pk
4,string for 4,1
5,string for 5,0
6,string for 6,0
\.