addSql('ALTER TABLE ancestry ADD item_id INT NOT NULL'); $this->addSql('ALTER TABLE ancestry ADD CONSTRAINT FK_63FAD02F126F525E FOREIGN KEY (item_id) REFERENCES item (id) NOT DEFERRABLE INITIALLY IMMEDIATE'); $this->addSql('CREATE UNIQUE INDEX UNIQ_63FAD02F126F525E ON ancestry (item_id)'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('CREATE SCHEMA public'); $this->addSql('ALTER TABLE ancestry DROP CONSTRAINT FK_63FAD02F126F525E'); $this->addSql('DROP INDEX UNIQ_63FAD02F126F525E'); $this->addSql('ALTER TABLE ancestry DROP item_id'); } }