What is the principle behind implementing a MySQL pagination stored procedure?

The implementation principle of MySQL paging stored procedures is to use stored procedures to dynamically generate paging query statements to achieve pagination functionality. Stored procedures are a code block composed of precompiled SQL statements that can accept parameters and return results.

When implementing a MySQL pagination stored procedure, the logic for pagination query can be encapsulated within the stored procedure, accepting parameters such as page number and number of items per page. The stored procedure will dynamically generate the pagination query based on the input parameters, thus achieving the pagination functionality.

The specific implementation process includes the following steps:

1. Create a stored procedure with parameters such as page number and number of items to display per page.
2. Inside the stored procedure, the starting row number and ending row number are calculated based on the incoming parameters to generate the pagination query statement.
3. Generate search queries dynamically using the PREPARE statement and execute them with the EXECUTE statement.
4. Return the search results.

By implementing pagination functionality through stored procedures, pagination logic can be encapsulated at the database layer, reducing complexity in the front-end code and improving efficiency and maintainability of data queries.