1 echo CREATE TABLE t1
(f1 INT
, f2 INT
, PRIMARY KEY
(f1
));
2 CREATE TABLE t1
(f1 INT
, f2 INT
, PRIMARY KEY
(f1
));
3 echo CREATE TABLE t2
(f3 INT
, f4 INT
, PRIMARY KEY
(f4
), FOREIGN KEY
(f3
) REFERENCES t1
(f1
));
4 CREATE TABLE t2
(f3 INT
, f4 INT
, PRIMARY KEY
(f4
), FOREIGN KEY
(f3
) REFERENCES t1
(f1
));
5 echo CREATE TABLE t3
(f5 INT
, f6 INT
, FOREIGN KEY
(f5
) REFERENCES t2
(f4
));
6 CREATE TABLE t3
(f5 INT
, f6 INT
, FOREIGN KEY
(f5
) REFERENCES t2
(f4
));
