CREATE TABLE t1 (
id       INT NOT NULL,
title    TEXT,
PRIMARY  KEY (id),
FULLTEXT KEY (title),
FOREIGN  KEY (id) REFERENCES t2 (id)
) ENGINE=InnoDB;
ERROR HY000: Can't create table `test`.`t1` (errno: 150 "Foreign key constraint is incorrectly formed")
CREATE TABLE t1 (
id       INT NOT NULL,
title    TEXT,
PRIMARY  KEY (id)
) ENGINE=InnoDB;
ALTER TABLE t1 ADD FULLTEXT KEY (title), ADD FOREIGN KEY (id) REFERENCES t2 (id);
ERROR HY000: Can't create table `test`.`t1` (errno: 150 "Foreign key constraint is incorrectly formed")
SET FOREIGN_KEY_CHECKS = 0;
ALTER TABLE t1 ADD FULLTEXT KEY (title), ADD FOREIGN KEY (id) REFERENCES t2 (id);
DROP TABLE t1;
CREATE TABLE t1 (
id       INT NOT NULL,
title    TEXT,
PRIMARY  KEY (id),
FULLTEXT KEY (title),
FOREIGN  KEY (id) REFERENCES t2 (id)
) ENGINE=InnoDB;
DROP TABLE t1;
SET FOREIGN_KEY_CHECKS = 1;