addSql('ALTER TABLE oauth_tokens CHANGE token token LONGTEXT DEFAULT NULL, CHANGE refresh_token refresh_token LONGTEXT DEFAULT NULL'); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql('ALTER TABLE oauth_tokens CHANGE token token VARCHAR(255) DEFAULT NULL, CHANGE refresh_token refresh_token VARCHAR(255) NOT NULL'); } }