MySQL implements the gift management function of the ordering system

MySQL implements the gift management function of the ordering system, which requires specific code examples

With the development of the mobile Internet, the ordering system has become more and more important in the catering industry. The more popular it becomes. The gift management function has become the focus of restaurant managers. Today, this article will introduce the gift management function of MySQL in the ordering system through specific code examples.

Implementation ideas

In the ordering system, the gift management function is more important, because it can not only promote customer consumption, but also increase the restaurant's turnover. In order to implement the gift management function in the system, we need to follow the following steps:

1. Create a gift table

In the MySQL database, we can create a gift table. The table should contain the following fields:

•gift_id: the unique identifier of the gift

•gift_name: the name of the gift

•gift_amount: the amount of the gift

•gift_description: description of the gift

•gift_price: price of the gift

2. Define the type of gift

In order to facilitate the management of gifts, we need to define Type of giveaway. The type of the giveaway should contain the following fields:

•type_id: the unique identifier of the type

•type_name: the name of the type

•type_description: the description of the type

3. Create a gift order table

In order to record whether each order contains a gift, we need to create a gift order table. The gift order table should contain the following fields:

•order_id: the unique identifier of the order

•gift_id: the unique identifier of the gift

•gift_amount: the amount of the gift

•gift_price: The price of the gift

4. Writing code

In MySQL, we need to write PHP code to implement the gift management function of the system. The specific code implementation is as follows:

•Query the gift list

We can use MySQL's SELECT statement to query the gift list. The code is as follows:

SELECT * FROM gift;

•Query the list of gift types

We can use the SELECT statement of MySQL to query the list of gift types. The code is as follows:

SELECT * FROM gift_type;

•Add gifts

We can use MySQL’s INSERT INTO statement to add gifts. The code is as follows:

INSERT INTO gift (gift_id, gift_name, gift_amount, gift_description, gift_price)
VALUE (1, '礼品1', 10, '这是一件很不错的礼品', 100);

•Editing gifts

We can use MySQL’s UPDATE statement to edit gifts. The code is as follows:

UPDATE gift SET gift_name='礼品1' WHERE gift_id=1;

•Delete the gift

We can use the DELETE statement of MySQL to delete the gift. The code is as follows:

DELETE FROM gift WHERE gift_id=1;

•Add order gifts

We can use MySQL's INSERT INTO statement to add order gifts. The code is as follows:

INSERT INTO gift_order (order_id, gift_id, gift_amount, gift_price)
VALUE (1, 1, 1, 100);

•Query order gifts

We can use MySQL’s SELECT statement to query order gifts. The code is as follows:

SELECT * FROM gift_order;

Code Example

The following is a simple MySQL example to demonstrate all the code examples and query statements we mentioned above.

-- 创建赠品表 
CREATE TABLE gift (
  gift_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
  gift_name VARCHAR(100),
  gift_amount INT,
  gift_description VARCHAR(200),
  gift_price DECIMAL
);

-- 创建赠品类型 
CREATE TABLE gift_type (
  type_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
  type_name VARCHAR(100),
  type_description VARCHAR(200)
);

-- 创建赠品订单表 
CREATE TABLE gift_order (
  order_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
  gift_id INT,
  gift_amount INT,
  gift_price DECIMAL,
  FOREIGN KEY (gift_id) REFERENCES gift(gift_id)
);

-- 添加赠品 
INSERT INTO gift (gift_name, gift_amount, gift_description, gift_price) 
VALUES ('礼品1', 10, '这是一件很好的礼品', 99.99);

-- 编辑赠品 
UPDATE gift SET gift_name='礼品B' WHERE gift_id=1;

-- 删除赠品 
DELETE FROM gift WHERE gift_id=1;

-- 添加订单赠品 
INSERT INTO gift_order (order_id, gift_id, gift_amount, gift_price) 
VALUES (1, 1, 1, 99.99);

-- 查询赠品列表 
SELECT * FROM gift;

-- 查询赠品类型列表 
SELECT * FROM gift_type;

-- 查询订单赠品 
SELECT * FROM gift_order;

The above code example can be used to implement the gift management function of the MySQL ordering system.

Summary

Implementing the gift management function of the ordering system through MySQL can help restaurant managers better manage gifts, thereby improving the economic benefits of the restaurant. In addition, when writing MySQL code, you should pay attention to the table design of the database to better store and manage data.

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