如何用命令查询mysql版本号

mysql --version

SELECT VERSION();

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

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

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

// 查询MySQL版本号
$sql = "SELECT VERSION()";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 输出数据
    while($row = $result->fetch_assoc()) {
        echo "MySQL版本号: " . $row["VERSION()"];
    }
} else {
    echo "0 结果";
}
$conn->close();
?>

import mysql.connector

# 连接到MySQL数据库
mydb = mysql.connector.connect(
  host="localhost",
  user="username",
  password="password",
  database="database_name"
)

# 创建游标对象
mycursor = mydb.cursor()

# 执行查询
mycursor.execute("SELECT VERSION()")

# 获取结果
result = mycursor.fetchone()

# 输出MySQL版本号
print("MySQL版本号:", result[0])