退款MySQL查询

我的数据库中目前有5个表

分支机构、客户、订单行、订单、产品

我希望能够通过订单ID退款 退款含义： 将订单总价设置回0.00， 每个订单行的总价为0.00， 将数量从订单行添加回产品， 以及将订单状态设置为RFND

这是我目前的数据库

DROP DATABASE IF EXISTS MMWally;

CREATE DATABASE IF NOT EXISTS MMWally;

USE MMWally;

--
-- Definition of table `categories`
--

DROP TABLE IF EXISTS `products`;
CREATE TABLE `products`
(
    `ProductID` int NOT NULL,
    `ProductName` varchar(50) NOT NULL, 
    `wPrice` double(13, 2) NOT NULL,
    `Stock` int NOT NULL,
    `BranchID` int NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;


DROP TABLE IF EXISTS `customers`;
CREATE TABLE `customers` (
  `CustomerID` int NOT NULL,
  `FirstName` tinytext NOT NULL,
  `LastName` tinytext NOT NULL,
  `Phone` VARCHAR(10) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;


DROP TABLE IF EXISTS `branch`;
CREATE TABLE `branch`
(
    `BranchID` int NOT NULL,
    `BranchName` tinytext DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;


DROP TABLE IF EXISTS `orders`;
CREATE TABLE `orders`
(
    `OrderID` int NOT NULL,
    `CustomerID` int NOT NULL,
    `BranchID` int NOT NULL,
    `OrderDate` date NOT NULL,
    `sPrice` double(13, 2) DEFAULT NULL,
    `Status` tinytext NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

DROP TABLE IF EXISTS `orderline`;
CREATE TABLE `orderline`
(
    `OrderID` int NOT NULL,
    `OrderLineID` int NOT NULL,
    `ProductID` int NOT NULL,
    `ItemQuantity` int NOT NULL,
    `TotalPrice` double(13, 2) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1;


ALTER TABLE orders MODIFY OrderID INT AUTO_INCREMENT PRIMARY KEY; 
ALTER TABLE orderline MODIFY OrderLineID INT AUTO_INCREMENT PRIMARY KEY; 
ALTER TABLE branch MODIFY BranchID INT AUTO_INCREMENT PRIMARY KEY;
ALTER TABLE customers MODIFY CustomerID INT AUTO_INCREMENT PRIMARY KEY;
ALTER TABLE products MODIFY ProductID INT AUTO_INCREMENT PRIMARY KEY;


/* FOREIGN KEYS */

ALTER TABLE orders ADD CONSTRAINT FOREIGN KEY (CustomerID) REFERENCES customers (CustomerID);
ALTER TABLE orders ADD CONSTRAINT FOREIGN KEY (BranchID) REFERENCES branch (BranchID);
ALTER TABLE products ADD CONSTRAINT FOREIGN KEY (BranchID) REFERENCES branch (BranchID);
ALTER TABLE orderline ADD CONSTRAINT FOREIGN KEY (OrderID) REFERENCES orders (OrderID);
ALTER TABLE orderline ADD CONSTRAINT FOREIGN KEY (ProductID) REFERENCES products (ProductID);

ALTER TABLE orders ADD CONSTRAINT CHECK (`Status` = 'PAID' OR `Status` = 'RFND');

/*!40000 ALTER TABLE `branch` DISABLE KEYS */;
INSERT INTO `branch` (`BranchID`, `BranchName`) VALUES 
 (1, 'Sports World'),
 (2, 'Waterloo'),
 (3, 'Cambridge Mall');
/*!40000 ALTER TABLE `branch` ENABLE KEYS */;

/*!40000 ALTER TABLE `customers` DISABLE KEYS */;
INSERT INTO `customers` (`CustomerID`, `FirstName`, `LastName`, `Phone`) VALUES 
 (1, 'Carlo', 'Sgro', 5195550000),
 (2, 'Norbert', 'Mika', 4165551111),
 (3, 'Russell', 'Foubert', 5195552222),
 (4, 'Sean', 'Clarke', 5195553333),
 (5, 'Sean', 'Clarke', 5192395285);
/*!40000 ALTER TABLE `customers` ENABLE KEYS */;

/*!40000 ALTER TABLE `products` DISABLE KEYS */;
INSERT INTO `products` (`ProductID`,`ProductName`, `wPrice`, `Stock`, `BranchID`) VALUES 
 (1, 'Disco Queen Wallpaper (roll)', 12.95, 56, 1),
 (2, 'Countryside Wallpaper (roll)', 11.95, 24, 1),
 (3, 'Drywall Tape (roll)', 3.95, 120, 2),
 (4, 'Drywall Tape (pkg 10)', 36.95, 30, 2),
 (5, 'Drywall Repair Compound (tube)', 6.95, 90, 3),
 (6, 'Victorian Lace Wallpaper (roll)', 14.95, 44, 3);
/*!40000 ALTER TABLE `products` ENABLE KEYS */;


/*!40000 ALTER TABLE `orders` DISABLE KEYS */;
INSERT INTO orders(CustomerID, BranchID, OrderDate, sPrice, Status) VALUES 
(1, 1, '2019-07-20', 20.93, 'PAID'),
(2, 1, '2019-07-20', 9.73, 'PAID'),
(3, 1, '2019-07-20', 5.53, 'PAID'),
(4, 3, '2019-10-06', 16.73, 'PAID'),
(4, 2, '2019-11-02', 18.13, 'PAID'),
(3, 2, '2019-11-02', 5.53, 'PAID'),
(2, 2, '2019-11-02', 18.13, 'RFND'),
(1, 2, '2019-11-02', 5.53, 'RFND');
/*!40000 ALTER TABLE `orders` ENABLE KEYS */;

---

MySQL或SQL Server？我们知道它不是SQL Server-没有那些奇怪的撇号和“tinytext”MySQL或SQL Server？我们知道它不是SQL Server-没有那些奇怪的撇号和“tinytext”