Erreur mysql -> SELECT tarif_base FROM periode_chb_double_to_base,periode WHERE periode_chb_double_to_base.id_periode = periode.id_periode AND periode.voyage_periode = AND periode.end_periode > '2014-04-18' ORDER BY tarif_base ASC LIMIT 0,1-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 'AND periode.end_periode > '2014-04-18' ORDER BY tarif_base ASC LIMIT 0,1' at line 1