addSql('CREATE TABLE url (id INT AUTO_INCREMENT NOT NULL, long_url LONGTEXT NOT NULL, custom_string VARCHAR(11) DEFAULT NULL, UNIQUE INDEX UNIQ_F47645AEAA1366AD (custom_string), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('DROP TABLE url'); } }