addSql('CREATE TABLE subthematic (id INT AUTO_INCREMENT NOT NULL, thematic_id INT DEFAULT NULL, name VARCHAR(255) NOT NULL, INDEX IDX_778C62FB2395FCED (thematic_id), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'); $this->addSql('ALTER TABLE subthematic ADD CONSTRAINT FK_778C62FB2395FCED FOREIGN KEY (thematic_id) REFERENCES thematic (id)'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('DROP TABLE subthematic'); } }