[MySQL][SQL][PHP]Dodawanie if'a a Opcje

[Ubermade]

[SQL] pobierz, plaintext 
$sth = $pdo->prepare( 'UPDATE `posts` SET `title`=:title, 'IF($image && $_FILES['image']['error'] == 0){ unlink('Images/Posts/' . $image);' `image`=:image, '}'`video`=:video, `text`=:text, `author`=:author WHERE id = :id' );
[SQL] pobierz, plaintext 

Jak zapisać to poprawnie?