ORDER_BY date LIMIT 1 [duplicate]

Answer 1

you forgot ` here around date. date is reserved word in mysql,

if you want to use it as column name place ` around it.

EDIT

also you have extra space remove it

$note = "SELECT * FROM notify WHERE seeker='".$_SESSION['email']. "' 
AND donor='".$email."' ORDER_BY `date` LIMIT 1";

Answer 2

have you try to order by desc? as shown bellow:

$note = "SELECT * FROM notify 
           WHERE
           seeker=' ".$_SESSION['email']. " ' 
           AND
           donor=' ".$email." ' ORDER_BY date DESC LIMIT 1";

Answer 3

Jack's answer shows you how to use prepared statements correctly. Here is the code to simplify the date calculation using DATEDIFF().

$note = "SELECT *, DATEDIFF(NOW(), `date`) AS date_diff
         FROM notify 
         WHERE seeker=:seeker AND donor=:donor
         ORDER_BY `date` DESC
         LIMIT 1";

$st = $conn->prepare($note);
$st->execute(array(
    ':seeker' => $_SESSION['email'],
    ':donor' => $email,
);

$row = $st->fetch(PDO::FETCH_ASSOC);
// do something with $row

Answer 4

In order to retrieve latest date you need to sort field for date in descending order

  $note = "SELECT * FROM notify WHERE seeker=' ".$_SESSION['email']. " ' AND donor=' ".$email." ' ORDER_BY date DESC LIMIT 1";

Answer 5

Since your date column doesn't exist, there's no point in ordering by it. Also, you're exposed to SQL injection in the case where $_SESSION['email'] is not secured.

So, the correct form would be to use prepared statements, as well as order by the right column. (assuming PDO, you can use mysqli as well):

/** @var PDO $pdo - Assuming a PDO connection. */
$query = "SELECT * FROM `user` WHERE `ID` = :email ORDER BY `time` DESC";
$stmt = $pdo->prepare($query);
$stmt->execute(array($_SESSION['email']));

$result = $stmt->fetchAll(PDO::FETCH_ASSOC); //Get all results in an associated array form.

Answer 6

If you are attching any variables to string then you need to concatinate them using dot and oder by will come after where condition and inside $_SESSION you missed quotes

$query = "SELECT * FROM user WHERE ID='".$_SESSION['email']."' ORDER_BY date, time";