SQLITE3> WITH cte AS(
SELECT
Personaggio.Personaggio_ID,
Personaggio.Name, CompleteModifiers.Modifier AS "STR", sum(Class."Base Attack Bonus") AS "BaB" FROM Personaggio
LEFT JOIN CompleteModifiers ON Personaggio.Personaggio_ID = CompleteModifiers.PersonaggioID AND (CompleteModifiers.StatisticaID = 1)
INNER JOIN Class ON Class.Character_ID = Personaggio.Personaggio_ID
GROUP BY Class.Character_ID
)
SELECT *, coalesce(STR,0)+coalesce(BaB,0) AS "Mischia" FROM cte
WHERE cte.Personaggio_ID = :id