ExceptionSQL rencontrée : Erreur SQL !

Requête = SELECT profondeur FROM rubrique WHERE id=

Erreur retournée : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
Code d'exception 201 : erreur SQL de type SELECT.

Localisation de l'erreur :
#0 /homez.59/teamoutd/www/inc/lib/class.rubrique.php(170): SQL->queryLine('SELECT profonde...')
#1 /homez.59/teamoutd/www/inc/lib/class.rubrique.php(177): Rubrique::getIdPremierNiveau(NULL)
#2 /homez.59/teamoutd/www/inc.espaces.php(123): Rubrique::getIdPremierNiveau('25')
#3 /homez.59/teamoutd/www/header.php(17): require_once('/homez.59/teamo...')
#4 /homez.59/teamoutd/www/articles.php(32): require_once('/homez.59/teamo...')
#5 {main}