addSql(<<<'SQL' ALTER TABLE place CHANGE osm_user osm_user VARCHAR(255) CHARACTER SET utf8mb4 DEFAULT NULL COLLATE `utf8mb4_0900_ai_ci` SQL); } public function down(Schema $schema): void { // this down() migration is auto-generated, please modify it to your needs $this->addSql(<<<'SQL' ALTER TABLE place CHANGE osm_user osm_user VARCHAR(255) DEFAULT NULL SQL); } }