What versions of MySQL are there?

MySQL is a popular open source relational database management system with multiple versions, each with its own features and functions. In this article, we will introduce some common MySQL versions with corresponding code examples.

1. MySQL Community Edition:
   MySQL Community Edition is the free version officially released by MySQL and is suitable for individual users and small teams. It contains basic database functions, such as creating tables, inserting data, querying data, etc. The following is a simple example code to create a table:

CREATE TABLE users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(255) NOT NULL,
    email VARCHAR(255) NOT NULL
);

2. MySQL Enterprise Edition:
   MySQL Enterprise Edition is the commercial version provided by MySQL and is designed for enterprise-level users. It includes enterprise-grade security, reliability, and performance optimization features. The following is an example using the advanced security features of MySQL Enterprise Edition:

CREATE USER 'admin'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON *.* TO 'admin'@'localhost' WITH GRANT OPTION;
FLUSH PRIVILEGES;

3. MySQL Cluster Edition:
   MySQL Cluster Edition is a high-availability, high-scalability version provided by MySQL, suitable for large-scale distributed applications. It uses multi-master replication technology to ensure data synchronization and failover across the entire cluster. The following is a sample code to create a cluster table in MySQL Cluster:

CREATE TABLE users (
    id INT,
    username VARCHAR(255),
    email VARCHAR(255),
    PRIMARY KEY (id)
) ENGINE = NDBCLUSTER;

4. MySQL Embedded Edition:
   MySQL Embedded Edition is an embedded version of MySQL that can be directly integrated into applications without the need to deploy a separate database server. It is ideally suited for use in embedded devices and embedded systems. The following is a sample code for using MySQL Embedded Edition in a Java application:

import com.mysql.cj.jdbc.MysqlDataSource;
import java.sql.Connection;
import java.sql.Statement;

public class EmbeddedMySQLExample {
    public static void main(String[] args) {
        MysqlDataSource dataSource = new MysqlDataSource();
        dataSource.setURL("jdbc:mysql:embedded://localhost/mydatabase");
        dataSource.setUser("root");
        dataSource.setPassword("password");
        
        try (Connection con = dataSource.getConnection(); Statement stmt = con.createStatement()) {
            stmt.executeUpdate("CREATE TABLE users (id INT AUTO_INCREMENT PRIMARY KEY, username VARCHAR(255) NOT NULL)");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

In general, MySQL has multiple versions suitable for different user needs. Whether it is individual developers, small and medium-sized enterprises or large enterprises, you can choose the version that suits you according to the actual situation to build a stable database. Reliable database system.

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