尝试创建大于和小于mysql表php内的查询

<?php
// 连接到MySQL数据库
$servername = "数据库服务器地址";
$username = "用户名";
$password = "密码";
$dbname = "数据库名";

$conn = new mysqli($servername, $username, $password, $dbname);

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

// 创建大于查询
$sql_greater_than = "SELECT * FROM 表名 WHERE 列名 > 值";
$result_greater_than = $conn->query($sql_greater_than);

if ($result_greater_than->num_rows > 0) {
    // 输出查询结果
    while($row = $result_greater_than->fetch_assoc()) {
        echo "列名: " . $row["列名"]. "<br>";
    }
} else {
    echo "没有结果";
}

// 创建小于查询
$sql_less_than = "SELECT * FROM 表名 WHERE 列名 < 值";
$result_less_than = $conn->query($sql_less_than);

if ($result_less_than->num_rows > 0) {
    // 输出查询结果
    while($row = $result_less_than->fetch_assoc()) {
        echo "列名: " . $row["列名"]. "<br>";
    }
} else {
    echo "没有结果";
}

// 关闭数据库连接
$conn->close();
?>