MySQL implements the refund management function of the ordering system

MySQL implements the refund management function of the food ordering system

With the rapid development of Internet technology, the food ordering system has gradually become a standard configuration in the catering industry. In the ordering system, the refund management function is a very critical link, which has an important impact on the consumer experience and the efficiency of restaurant operations. This article will introduce in detail how to use MySQL to implement the refund management function of the ordering system and provide specific code examples.

1. Database design
Before implementing the refund management function, we need to design the database. It mainly involves three tables: order table (order), order details table (order_detail) and refund record table (refund_record). Below are the field descriptions and creation statements of each table.

1. Order table (order)
   Field description:
2. order_id: order ID, primary key, auto-increment
3. order_no: order number, unique, used Query order
4. order_time: order time
5. total_amount: total order amount
6. status: order status, including pending payment, paid, pending refund, refunded, etc.

Create statement:
CREATE TABLE order (
order_id INT(11) NOT NULL AUTO_INCREMENT,
order_no VARCHAR(20) NOT NULL,
order_time DATETIME NOT NULL,
total_amount DECIMAL(10,2) NOT NULL,
status VARCHAR(10) NOT NULL,
PRIMARY KEY (order_id),
UNIQUE KEY order_no (order_no)
) ;

2. Order details table (order_detail)
   Field description:
3. detail_id: detail ID, primary key, auto-increment
4. order_id: order ID, foreign key , associated order table
5. dish_id: dish ID
6. dish_name: dish name
7. price: dish price
8. quantity: dish quantity

Create statement:
CREATE TABLE order_detail (
detail_id INT(11) NOT NULL AUTO_INCREMENT,
order_id INT(11 ) NOT NULL,
dish_id INT(11) NOT NULL,
dish_name VARCHAR(50) NOT NULL,
price DECIMAL( 10,2) NOT NULL,
quantity INT(11) NOT NULL,
PRIMARY KEY (detail_id),
KEY order_id (order_id),
CONSTRAINT order_detail_ibfk_1 FOREIGN KEY (order_id) REFERENCES order (order_id)
);

3. Refund record table (refund_record)
   Field description:
4. refund_id: Refund ID, primary key, auto-increment
5. order_id: Order ID, foreign key, associated order table
6. refund_time: refund time
7. refund_amount: refund amount

Create statement:
CREATE TABLE refund_record (
refund_id INT(11) NOT NULL AUTO_INCREMENT,
order_id INT(11) NOT NULL,
refund_time DATETIME NOT NULL,
refund_amount DECIMAL(10,2) NOT NULL,
PRIMARY KEY (refund_id),
KEY order_id (order_id),
CONSTRAINT refund_record_ibfk_1 FOREIGN KEY (order_id) REFERENCES order (order_id)
);

2. Implementation of the refund management function
After the database design is completed, the refund management function can be implemented. The following are some common refund operations, including order inquiry, refund application, refund confirmation and refund record inquiry.

1. Query order
   Query the order based on the order number and display the order details.

Code example:
SELECT * FROM order WHERE order_no = 'xxx';

2. Refund application
   The user initiates a refund application and changes the order status to "Pending Refund".

Code example:
UPDATE order SET status = 'Pending refund' WHERE order_id = xxx;

3. Confirm refund
   The merchant confirms the refund application and updates the refund record table.

Code example:
INSERT INTO refund_record (order_id, refund_time, refund_amount) VALUES (xxx, 'yyyy-mm-dd HH:ii:ss', zzzz);

4. Query the refund record
   Query the refund record based on the order ID.

Code example:
SELECT * FROM refund_record WHERE order_id = xxx;

3. Summary
Through MySQL Implementing the refund management function of the ordering system can improve the service efficiency of the restaurant and increase customer satisfaction. This article introduces the design of the database and specific code examples for developers to refer to and use. Of course, the actual situation may be different, and developers can make appropriate modifications and extensions based on specific needs.

The above is the detailed content of MySQL implements the refund management function of the ordering system. For more information, please follow other related articles on the PHP Chinese website!