addSql('ALTER TABLE page ADD file_id INT DEFAULT NULL'); $this->addSql('ALTER TABLE page ADD CONSTRAINT FK_140AB62093CB796C FOREIGN KEY (file_id) REFERENCES file (id)'); $this->addSql('CREATE INDEX IDX_140AB62093CB796C ON page (file_id)'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE page DROP FOREIGN KEY FK_140AB62093CB796C'); $this->addSql('DROP INDEX IDX_140AB62093CB796C ON page'); $this->addSql('ALTER TABLE page DROP file_id'); } }