How to create a user favorite record table for the grocery shopping system in MySQL

How to create a user favorite record table for the food shopping system in MySQL

In shopping applications, users often need to add their favorite products or dishes to their favorites , so that you can quickly find and purchase it in the future. To meet this requirement, developers need to create a user collection record table in the database. This article will introduce how to create a user favorite record table in MySQL and provide specific code examples.

First, we need to determine what information needs to be stored in the user collection record table. Generally speaking, the user favorite record table needs to contain at least the following fields:

1. Favorite record id: the unique identifier of each favorite record, generally using an auto-incrementing primary key.
2. User id: The unique identifier of the user corresponding to the collection.
3. Product id: The unique identifier of the collected product.
4. Creation time: The creation time of the collection record, used for sorting and querying.

Next, we use MySQL statements to create the user favorite record table. Suppose we name the table user_favorite, the code to create the table is as follows:

CREATE TABLE user_favorite (
  id INT AUTO_INCREMENT PRIMARY KEY,
  user_id INT NOT NULL,
  product_id INT NOT NULL,
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

In the above code, we use the CREATE TABLE statement to create the table . user_favorite is the name of the table. The id field is defined as an auto-incrementing primary key, used to uniquely identify each collection record. The user_id and product_id fields are used to store user id and product id respectively. The created_at field is defined as the TIMESTAMP type, and the default value is set to the current timestamp, which is used to record the creation time of the collection record.

After creating the user collection record table, we can test the effect of the table by inserting data. Suppose we want to insert a collection record with user ID 1 and product ID 100. We can use the following code:

INSERT INTO user_favorite (user_id, product_id) VALUES (1, 100);

By executing the above code, we insert a collection into the user_favorite table Record.

In addition to inserting data, we can also use query statements to view favorite records. The following is a query example to obtain all favorite records with user id 1:

SELECT * FROM user_favorite WHERE user_id = 1;

The above code will query all user_id records in the user_favorite table, and Return the result.

To summarize, we can create a user favorite record table in MySQL through the above steps. First determine the fields that need to be stored and define the table structure, then use MySQL statements to create the table and insert or query data when needed. In the actual development process, we can also add other fields according to needs, such as collection status or notes, etc.

I hope this article can help you create a complete user collection record table and successfully implement the collection function in the grocery shopping system.

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