__ Détail d'une actualité __

Erreur MySQL.
Requête: SELECT Theme, IdType, ActDatePublication, ActTitre,ActIntroduction, ActDescriptif, ActPhoto, ActVignette FROM perpignan_actualites INNER JOIN perpignan_themes ON perpignan_actualites.IdTheme = perpignan_themes.IdTheme WHERE perpignan_actualites.en_ligne=1 AND IdActualite=
Erreur: (1064) 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