Insert or Update in Sybase SQLAnywhere

Question

How can I insert a row in database (Sybase SQL Anywhere 12.5) if it does not exist, and update if it exists?

I'm trying following:

$stmt = $conn->prepare('INSERT INTO customer_info (user_id, fname, lname) VALUES(:user_id, :fname, :lname)
    ON DUPLICATE KEY UPDATE fname= :fname2, lname= :lname2');

$stmt->bindParam(':user_id', $user_id);  
$stmt->bindParam(':fname', $_POST['fname'], PDO::PARAM_STR);
$stmt->bindParam(':lname', $_POST['lname'], PDO::PARAM_STR);      
$stmt->bindParam(':fname2', $_POST['fname'], PDO::PARAM_STR);
$stmt->bindParam(':lname2', $_POST['lname'], PDO::PARAM_STR);

It gives following error:

[Sybase][ODBC Driver][SQL Anywhere]Syntax error near 'ON' on line 1

Is it some compatibility issue? How can I do it it?

Answer 1

Add ON EXISTING UPDATE to the insert statement, for example:

INSERT INTO customer_info (user_id,fname,lname) ON EXISTING UPDATE VALUES(Value1,Value2,Value3);