如何查早mysql数据库名称

SHOW DATABASES;

<?php
$servername = "localhost";
$username = "username";
$password = "password";

// 创建连接
$conn = new mysqli($servername, $username, $password);

// 检测连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 查询数据库名称
$sql = "SHOW DATABASES";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 输出数据库名称
    while($row = $result->fetch_assoc()) {
        echo "数据库名称: " . $row["Database"] . "<br>";
    }
} else {
    echo "0 结果";
}
$conn->close();
?>

import mysql.connector

mydb = mysql.connector.connect(
  host="localhost",
  user="username",
  password="password"
)

mycursor = mydb.cursor()

mycursor.execute("SHOW DATABASES")

for x in mycursor:
  print(x)

GRANT SELECT ON mysql.* TO 'username'@'localhost';
FLUSH PRIVILEGES;