Я тут вывел нужные мне строки , но как сделать что бы вывести одну из них случайную .

<?php

// Connect to data base

function printResult ($result) {
    $numrows = $result->num_rows;
    echo "Nunber -".$numrows."<br />";
    while (($row = $result -> fetch_assoc()) != false ) {
    print_r ($row);
     echo "<br />";
    }


     echo "---------------------------<br />";
    }


    $mysqli = new mysqli ("localhost", "root", "", "gift");
    $mysqli->query("SET NAMES 'utf-8'");
    $result = $mysqli->query("SELECT * FROM `table` WHERE `Name` = 'aaaaaaaaa' AND `Adress` = '2'");
    printResult ($result);


    $mysqli->close ()

?>

$sql = "
SELECT 
	*,
	(
	select 
		id 
	from 
		`table` 
	WHERE 
		`Name` = 'aaaaaaaaa' AND 
		`Adress` = '2' 
	ORDER BY 
		rand() limit 1
	) AS `rand`
FROM 
	`table` 
WHERE 
	`Name` = 'aaaaaaaaa' AND 
	`Adress` = '2'
";
$result = $mysqli->query($sql);

while ($row = $result -> fetch_assoc()) {
	...
	if ($row['rand'] == $row['id']){
		echo '<br>Случайное id = '.$row['rand'];
	}
}

<?php

// Connect to data base

function printResult ($result) {
    $numrows = $result->num_rows;
    echo "Nunber -".$numrows."<br />";
    while (($row = $result -> fetch_assoc()) != false ) {
        if ($row['rand'] == $row['id']){
        echo '<br>Случайное id = '.$row['rand'];
    }
     echo "<br />";
    }


     echo "---------------------------<br />";
    }


    $mysqli = new mysqli ("localhost", "root", "", "gift");
    $mysqli->query("SET NAMES 'utf-8'");
    $sql = "SELECT * , (select id from `table` WHERE `Name` = 'aaaaaaaaa' AND `Adress` = '2' ORDER BY rand() limit 1) AS `rand` FROM `table` WHERE `Name` = 'aaaaaaaaa' AND `Adress` = '2' ";
    $result = $mysqli->query($sql);

    printResult ($result);


    $mysqli->close ()

?>

Что я не так делаю ?