import java.util.Date; CREATE TABLE history( history_id INTEGER NOT NULL PRIMARY KEY, history_chapter_id INTEGER NOT NULL UNIQUE, history_last_read INTEGER AS Date, history_time_read INTEGER AS Date, FOREIGN KEY(history_chapter_id) REFERENCES chapters (_id) ON DELETE CASCADE ); CREATE INDEX history_history_chapter_id_index ON history(history_chapter_id); resetHistoryById: UPDATE history SET history_last_read = 0 WHERE history_id = :historyId; resetHistoryByMangaId: UPDATE history SET history_last_read = 0 WHERE history_id IN ( SELECT H.history_id FROM mangas M INNER JOIN chapters C ON M._id = C.manga_id INNER JOIN history H ON C._id = H.history_chapter_id WHERE M._id = :mangaId ); removeAllHistory: DELETE FROM history; removeResettedHistory: DELETE FROM history WHERE history_last_read = 0;