SQL 오류 MySQL 워크 벤치

Question

MySQL 데이터베이스에서 테이블을 변경했습니다. 이 오류가 발생합니다. 그 오류가 있다면 구문을 변경하는 방법을 모르겠습니다.

Operation failed: There was an error while applying the SQL script to the database. 
Executing: 
ALTER TABLE `invoicedb`.`c_order` 
CHANGE COLUMN `name` `first_name` CHAR(20) NULL DEFAULT NULL , 
CHANGE COLUMN `phone_number` `last_name` CHAR(20) NULL DEFAULT NULL , 
CHANGE COLUMN `emailID` `email` CHAR(40) NULL DEFAULT NULL , 
CHANGE COLUMN `address` `phone_number` INT(10) NULL DEFAULT 0000000000 , 
CHANGE COLUMN `productID` `address_l1` CHAR(30) NULL DEFAULT NULL , 
CHANGE COLUMN `invoiceNo` `address_l2` CHAR(30) NULL DEFAULT NULL , 
CHANGE COLUMN `total` `product` INT(6) NULL DEFAULT Bicycle , 
ADD COLUMN `chassis_number` CHAR(15) NULL DEFAULT NULL AFTER `prouct`, 
ADD COLUMN `invoice_number` CHAR(15) NULL DEFAULT NULL AFTER `chassis_number`, 
ADD COLUMN `invoice_date` DATE NULL DEFAULT 'DD/MM/YYYY' AFTER `invoice_number`, 
ADD COLUMN `valid_date` DATE NULL DEFAULT 'DD/MM/YYYY' AFTER `invoice_date`, 
ADD COLUMN `invoice_value` FLOAT NULL DEFAULT 0000.00 AFTER `valid_date`; 

ERROR 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Bicycle , 
ADD COLUMN `chassis_number` CHAR(15) NULL DEFAULT NULL AFTER `product`' at line 8 
SQL Statement: 
ALTER TABLE `invoicedb`.`c_order` 
CHANGE COLUMN `name` `first_name` CHAR(20) NULL DEFAULT NULL , 
CHANGE COLUMN `phone_number` `last_name` CHAR(20) NULL DEFAULT NULL , 
CHANGE COLUMN `emailID` `email` CHAR(40) NULL DEFAULT NULL , 
CHANGE COLUMN `address` `phone_number` INT(10) NULL DEFAULT 0000000000 , 
CHANGE COLUMN `productID` `address_l1` CHAR(30) NULL DEFAULT NULL , 
CHANGE COLUMN `invoiceNo` `address_l2` CHAR(30) NULL DEFAULT NULL , 
CHANGE COLUMN `total` `product` INT(6) NULL DEFAULT Bicycle , 
ADD COLUMN `chassis_number` CHAR(15) NULL DEFAULT NULL AFTER `product`, 
ADD COLUMN `invoice_number` CHAR(15) NULL DEFAULT NULL AFTER `chassis_number`, 
ADD COLUMN `invoice_date` DATE NULL DEFAULT 'DD/MM/YYYY' AFTER `invoice_number`, 
ADD COLUMN `valid_date` DATE NULL DEFAULT 'DD/MM/YYYY' AFTER `invoice_date`, 
ADD COLUMN `invoice_value` FLOAT NULL DEFAULT 0000.00 AFTER `valid_date` 

Answer 1

자전거 문자열 따옴표를 필요로하므로 열은 VARCHAR, 문자 또는 텍스트 유형이 있어야합니다 :

CHANGE COLUMN `total` `product` varchar(40) NULL DEFAULT 'Bicycle' ,