mysql怎么取消数据库连接

EXIT;

QUIT;

import mysql.connector

mydb = mysql.connector.connect(
  host="localhost",
  user="yourusername",
  password="yourpassword",
  database="mydatabase"
)

# 执行一些数据库操作...

# 关闭连接
mydb.close()

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class MySQLTest {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String user = "yourusername";
        String password = "yourpassword";

        try (Connection conn = DriverManager.getConnection(url, user, password)) {
            // 执行一些数据库操作...
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

const mysql = require('mysql');

const connection = mysql.createConnection({
  host: 'localhost',
  user: 'yourusername',
  password: 'yourpassword',
  database: 'mydatabase'
});

connection.connect();

// 执行一些数据库操作...

connection.end(); // 关闭连接