addSql('ALTER TABLE individual_data CHANGE firstname firstname VARCHAR(255) DEFAULT NULL, CHANGE lastname lastname VARCHAR(255) DEFAULT NULL, CHANGE email email VARCHAR(255) DEFAULT NULL, CHANGE intro_question intro_question VARCHAR(255) DEFAULT NULL'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE individual_data CHANGE firstname firstname VARCHAR(255) CHARACTER SET utf8mb4 NOT NULL COLLATE `utf8mb4_unicode_ci`, CHANGE lastname lastname VARCHAR(255) CHARACTER SET utf8mb4 NOT NULL COLLATE `utf8mb4_unicode_ci`, CHANGE email email VARCHAR(255) CHARACTER SET utf8mb4 NOT NULL COLLATE `utf8mb4_unicode_ci`, CHANGE intro_question intro_question VARCHAR(255) CHARACTER SET utf8mb4 NOT NULL COLLATE `utf8mb4_unicode_ci`'); } }