ALTER TABLE vn.componentType CHANGE code code varchar(20) CHARACTER SET utf8mb3 COLLATE utf8mb3_unicode_ci DEFAULT NULL NULL AFTER id; ALTER TABLE vn.componentType CHANGE `type` name varchar(45) CHARACTER SET utf8mb3 COLLATE utf8mb3_unicode_ci NOT NULL; UPDATE IGNORE vn.componentType SET code = LOWER(code); UPDATE IGNORE vn.componentType SET code = 'other' WHERE id = 12;