$sql="SELECT valide FROM tbl_service WHERE intervenant_id = :intervenant AND type_volume_horaire_id = :typeVolumeHoraire AND valide > 0";
$sql="SELECT valide FROM tbl_service WHERE intervenant_id = :intervenant AND type_volume_horaire_id = :typeVolumeHoraire AND valide > 0 AND ROWNUM = 1";