WITH horairesP(na, id, heure_passage) AS (
    SELECT passage.nomArret AS na, passage.idLigne AS id, heureDeb AS heure_passage
    FROM passage

    UNION ALL

    SELECT na, id , (heure_passage + frequence)
    FROM horairesP , ligne l , passage p
    WHERE na = p.nomArret
    AND id = l.idligne
    AND heure_passage + L.frequence < p.heureDeb + l.duree
)
SELECT *
FROM horairesP;