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Erreur selection produits :SELECT *, IF(prix_promo<>0,prix_promo,prix) as prix_final FROM produits p, marque m, genres g, themes t WHERE p.type_produit='2' AND m.id_marque = p.rid_marque AND g.id_genre = p.rid_genre AND p.rid_theme = t.id_theme AND p.afficher=1 AND m.afficher=1 AND (p.rid_marque = '174') ORDER BY id_prod DESC LIMIT -20,20