diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/backup/restore/restorers/MangaRestorer.kt b/app/src/main/java/eu/kanade/tachiyomi/data/backup/restore/restorers/MangaRestorer.kt
index 213fc4bf7..71e84d265 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/backup/restore/restorers/MangaRestorer.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/backup/restore/restorers/MangaRestorer.kt
@@ -330,13 +330,13 @@ class MangaRestorer(
                     null
                 } else {
                     // New history entry
-                    item.copy(chapterId = chapter._id)
+                    item.copy(chapterId = chapter.id)
                 }
             }
 
             // Update history entry
             item.copy(
-                id = dbHistory._id,
+                id = dbHistory.id,
                 chapterId = dbHistory.chapter_id,
                 readAt = max(item.readAt?.time ?: 0L, dbHistory.last_read?.time ?: 0L)
                     .takeIf { it > 0L }
diff --git a/data/src/main/sqldelight/tachiyomi/data/categories.sq b/data/src/main/sqldelight/tachiyomi/data/categories.sq
index a25e6ca3b..d042fec81 100644
--- a/data/src/main/sqldelight/tachiyomi/data/categories.sq
+++ b/data/src/main/sqldelight/tachiyomi/data/categories.sq
@@ -1,17 +1,18 @@
 CREATE TABLE categories(
-    _id INTEGER NOT NULL PRIMARY KEY,
+    id INTEGER NOT NULL PRIMARY KEY,
     name TEXT NOT NULL,
-    sort INTEGER NOT NULL,
-    flags INTEGER NOT NULL
+    `order` INTEGER NOT NULL,
+    flags INTEGER NOT NULL,
+    UNIQUE(`order`) ON CONFLICT ABORT
 );
 
 -- Insert system category
-INSERT OR IGNORE INTO categories(_id, name, sort, flags) VALUES (0, "", -1, 0);
+INSERT OR IGNORE INTO categories(id, name, `order`, flags) VALUES (0, "", -1, 0);
 -- Disallow deletion of default category
 CREATE TRIGGER IF NOT EXISTS system_category_delete_trigger BEFORE DELETE
 ON categories
 BEGIN SELECT CASE
-    WHEN old._id <= 0 THEN
+    WHEN old.id <= 0 THEN
         RAISE(ABORT, "System category can't be deleted")
     END;
 END;
@@ -19,47 +20,46 @@ END;
 getCategory:
 SELECT *
 FROM categories
-WHERE _id = :id
-LIMIT 1;
+WHERE id = :id;
 
 getCategories:
 SELECT
-_id AS id,
+id,
 name,
-sort AS `order`,
+`order`,
 flags
 FROM categories
-ORDER BY sort;
+ORDER BY `order`;
 
 getCategoriesByMangaId:
 SELECT
-C._id AS id,
+C.id,
 C.name,
-C.sort AS `order`,
+C.`order`,
 C.flags
 FROM categories C
 JOIN mangas_categories MC
-ON C._id = MC.category_id
+ON C.id = MC.category_id
 WHERE MC.manga_id = :mangaId;
 
 insert:
-INSERT INTO categories(name, sort, flags)
+INSERT INTO categories(name, `order`, flags)
 VALUES (:name, :order, :flags);
 
 delete:
 DELETE FROM categories
-WHERE _id = :categoryId;
+WHERE id = :categoryId;
 
 update:
 UPDATE categories
 SET name = coalesce(:name, name),
-    sort = coalesce(:order, sort),
+    `order` = coalesce(:order, `order`),
     flags = coalesce(:flags, flags)
-WHERE _id = :categoryId;
+WHERE id = :categoryId;
 
 updateAllFlags:
 UPDATE categories SET
 flags = coalesce(?, flags);
 
 selectLastInsertedRowId:
-SELECT last_insert_rowid();
\ No newline at end of file
+SELECT last_insert_rowid();
diff --git a/data/src/main/sqldelight/tachiyomi/data/chapters.sq b/data/src/main/sqldelight/tachiyomi/data/chapters.sq
index c69de987d..aa8809194 100644
--- a/data/src/main/sqldelight/tachiyomi/data/chapters.sq
+++ b/data/src/main/sqldelight/tachiyomi/data/chapters.sq
@@ -1,7 +1,7 @@
 import kotlin.Boolean;
 
 CREATE TABLE chapters(
-    _id INTEGER NOT NULL PRIMARY KEY,
+    id INTEGER NOT NULL PRIMARY KEY,
     manga_id INTEGER NOT NULL,
     url TEXT NOT NULL,
     name TEXT NOT NULL,
@@ -16,20 +16,20 @@ CREATE TABLE chapters(
     last_modified_at INTEGER NOT NULL DEFAULT 0,
     version INTEGER NOT NULL DEFAULT 0,
     is_syncing INTEGER NOT NULL DEFAULT 0,
-    FOREIGN KEY(manga_id) REFERENCES mangas (_id)
+    UNIQUE(manga_id, url) ON CONFLICT IGNORE,
+    FOREIGN KEY(manga_id) REFERENCES mangas(id)
     ON DELETE CASCADE
 );
 
 CREATE INDEX chapters_manga_id_index ON chapters(manga_id);
-CREATE INDEX chapters_unread_by_manga_index ON chapters(manga_id, read) WHERE read = 0;
 
 CREATE TRIGGER update_last_modified_at_chapters
 AFTER UPDATE ON chapters
 FOR EACH ROW
 BEGIN
-  UPDATE chapters
-  SET last_modified_at = strftime('%s', 'now')
-  WHERE _id = new._id;
+    UPDATE chapters
+    SET last_modified_at = strftime('%s', 'now')
+    WHERE id = new.id;
 END;
 
 CREATE TRIGGER update_chapter_and_manga_version AFTER UPDATE ON chapters
@@ -41,17 +41,17 @@ WHEN new.is_syncing = 0 AND (
 BEGIN
     -- Update the chapter version
     UPDATE chapters SET version = version + 1
-    WHERE _id = new._id;
+    WHERE id = new.id;
 
     -- Update the manga version
     UPDATE mangas SET version = version + 1
-    WHERE _id = new.manga_id AND (SELECT is_syncing FROM mangas WHERE _id = new.manga_id) = 0;
+    WHERE id = new.manga_id AND (SELECT is_syncing FROM mangas WHERE id = new.manga_id) = 0;
 END;
 
 getChapterById:
 SELECT *
 FROM chapters
-WHERE _id = :id;
+WHERE id = :id;
 
 getChaptersByMangaId:
 SELECT C.*
@@ -89,7 +89,7 @@ AND manga_id = :mangaId;
 
 removeChaptersWithIds:
 DELETE FROM chapters
-WHERE _id IN :chapterIds;
+WHERE id IN :chapterIds;
 
 resetIsSyncing:
 UPDATE chapters
@@ -115,7 +115,7 @@ SET manga_id = coalesce(:mangaId, manga_id),
     date_upload = coalesce(:dateUpload, date_upload),
     version = coalesce(:version, version),
     is_syncing = coalesce(:isSyncing, is_syncing)
-WHERE _id = :chapterId;
+WHERE id = :chapterId;
 
 selectLastInsertedRowId:
-SELECT last_insert_rowid();
\ No newline at end of file
+SELECT last_insert_rowid();
diff --git a/data/src/main/sqldelight/tachiyomi/data/excluded_scanlators.sq b/data/src/main/sqldelight/tachiyomi/data/excluded_scanlators.sq
index 2af2f4199..8ad2ec4ba 100644
--- a/data/src/main/sqldelight/tachiyomi/data/excluded_scanlators.sq
+++ b/data/src/main/sqldelight/tachiyomi/data/excluded_scanlators.sq
@@ -1,7 +1,8 @@
 CREATE TABLE excluded_scanlators(
     manga_id INTEGER NOT NULL,
     scanlator TEXT NOT NULL,
-    FOREIGN KEY(manga_id) REFERENCES mangas (_id)
+    UNIQUE(manga_id, scanlator) ON CONFLICT IGNORE,
+    FOREIGN KEY(manga_id) REFERENCES mangas(id)
     ON DELETE CASCADE
 );
 
diff --git a/data/src/main/sqldelight/tachiyomi/data/history.sq b/data/src/main/sqldelight/tachiyomi/data/history.sq
index 6ddb06ca7..32677e8ac 100644
--- a/data/src/main/sqldelight/tachiyomi/data/history.sq
+++ b/data/src/main/sqldelight/tachiyomi/data/history.sq
@@ -1,54 +1,55 @@
 import java.util.Date;
 
 CREATE TABLE history(
-    _id INTEGER NOT NULL PRIMARY KEY,
+    id INTEGER NOT NULL PRIMARY KEY,
     chapter_id INTEGER NOT NULL UNIQUE,
     last_read INTEGER AS Date,
     time_read INTEGER NOT NULL,
-    FOREIGN KEY(chapter_id) REFERENCES chapters (_id)
+    UNIQUE(chapter_id) ON CONFLICT IGNORE,
+    FOREIGN KEY(chapter_id) REFERENCES chapters (id)
     ON DELETE CASCADE
 );
 
-CREATE INDEX history_history_chapter_id_index ON history(chapter_id);
+CREATE INDEX history_chapter_id_index ON history(chapter_id);
 
 getHistoryByMangaId:
 SELECT
-H._id,
+H.id,
 H.chapter_id,
 H.last_read,
 H.time_read
 FROM history H
 JOIN chapters C
-ON H.chapter_id = C._id
-WHERE C.manga_id = :mangaId AND C._id = H.chapter_id;
+ON H.chapter_id = C.id
+WHERE C.manga_id = :mangaId AND C.id = H.chapter_id;
 
 getHistoryByChapterUrl:
 SELECT
-H._id,
+H.id,
 H.chapter_id,
 H.last_read,
 H.time_read
 FROM history H
 JOIN chapters C
-ON H.chapter_id = C._id
-WHERE C.url = :chapterUrl AND C._id = H.chapter_id;
+ON H.chapter_id = C.id
+WHERE C.url = :chapterUrl AND C.id = H.chapter_id;
 
 resetHistoryById:
 UPDATE history
 SET last_read = 0
-WHERE _id = :historyId;
+WHERE id = :historyId;
 
 resetHistoryByMangaId:
 UPDATE history
 SET last_read = 0
-WHERE _id IN (
-    SELECT H._id
+WHERE id IN (
+    SELECT H.id
     FROM mangas M
     INNER JOIN chapters C
-    ON M._id = C.manga_id
+    ON M.id = C.manga_id
     INNER JOIN history H
-    ON C._id = H.chapter_id
-    WHERE M._id = :mangaId
+    ON C.id = H.chapter_id
+    WHERE M.id = :mangaId
 );
 
 removeAllHistory:
diff --git a/data/src/main/sqldelight/tachiyomi/data/manga_sync.sq b/data/src/main/sqldelight/tachiyomi/data/manga_sync.sq
index bf8d0cba3..af25ff6a5 100644
--- a/data/src/main/sqldelight/tachiyomi/data/manga_sync.sq
+++ b/data/src/main/sqldelight/tachiyomi/data/manga_sync.sq
@@ -1,5 +1,5 @@
 CREATE TABLE manga_sync(
-    _id INTEGER NOT NULL PRIMARY KEY,
+    id INTEGER NOT NULL PRIMARY KEY,
     manga_id INTEGER NOT NULL,
     sync_id INTEGER NOT NULL,
     remote_id INTEGER NOT NULL,
@@ -12,11 +12,13 @@ CREATE TABLE manga_sync(
     remote_url TEXT NOT NULL,
     start_date INTEGER NOT NULL,
     finish_date INTEGER NOT NULL,
-    UNIQUE (manga_id, sync_id) ON CONFLICT REPLACE,
-    FOREIGN KEY(manga_id) REFERENCES mangas (_id)
+    UNIQUE(manga_id, sync_id) ON CONFLICT IGNORE,
+    FOREIGN KEY(manga_id) REFERENCES mangas(id)
     ON DELETE CASCADE
 );
 
+CREATE INDEX manga_sync_manga_id_index ON manga_sync(manga_id);
+
 delete:
 DELETE FROM manga_sync
 WHERE manga_id = :mangaId AND sync_id = :syncId;
@@ -28,7 +30,7 @@ FROM manga_sync;
 getTrackById:
 SELECT *
 FROM manga_sync
-WHERE _id = :id;
+WHERE id = :id;
 
 getTracksByMangaId:
 SELECT *
@@ -54,4 +56,4 @@ SET
     remote_url = coalesce(:trackingUrl, remote_url),
     start_date = coalesce(:startDate, start_date),
     finish_date = coalesce(:finishDate, finish_date)
-WHERE _id = :id;
+WHERE id = :id;
diff --git a/data/src/main/sqldelight/tachiyomi/data/mangas.sq b/data/src/main/sqldelight/tachiyomi/data/mangas.sq
index e3cb8076a..bfca6a331 100644
--- a/data/src/main/sqldelight/tachiyomi/data/mangas.sq
+++ b/data/src/main/sqldelight/tachiyomi/data/mangas.sq
@@ -4,7 +4,7 @@ import kotlin.Boolean;
 import kotlin.String;
 
 CREATE TABLE mangas(
-    _id INTEGER NOT NULL PRIMARY KEY,
+    id INTEGER NOT NULL PRIMARY KEY,
     source INTEGER NOT NULL,
     url TEXT NOT NULL,
     artist TEXT,
@@ -27,7 +27,8 @@ CREATE TABLE mangas(
     last_modified_at INTEGER NOT NULL DEFAULT 0,
     favorite_modified_at INTEGER,
     version INTEGER NOT NULL DEFAULT 0,
-    is_syncing INTEGER NOT NULL DEFAULT 0
+    is_syncing INTEGER NOT NULL DEFAULT 0,
+    UNIQUE(source, url) ON CONFLICT IGNORE
 );
 
 CREATE INDEX library_favorite_index ON mangas(favorite) WHERE favorite = 1;
@@ -38,7 +39,7 @@ AFTER UPDATE OF favorite ON mangas
 BEGIN
   UPDATE mangas
   SET favorite_modified_at = strftime('%s', 'now')
-  WHERE _id = new._id;
+  WHERE id = new.id;
 END;
 
 CREATE TRIGGER update_last_modified_at_mangas
@@ -47,13 +48,13 @@ FOR EACH ROW
 BEGIN
   UPDATE mangas
   SET last_modified_at = strftime('%s', 'now')
-  WHERE _id = new._id;
+  WHERE id = new.id;
 END;
 
 CREATE TRIGGER update_manga_version AFTER UPDATE ON mangas
 BEGIN
     UPDATE mangas SET version = version + 1
-    WHERE _id = new._id AND new.is_syncing = 0 AND (
+    WHERE id = new.id AND new.is_syncing = 0 AND (
         new.url != old.url OR
         new.description != old.description OR
         new.favorite != old.favorite
@@ -63,15 +64,13 @@ END;
 getMangaById:
 SELECT *
 FROM mangas
-WHERE _id = :id;
+WHERE id = :id;
 
--- TODO: this should ideally never really have more than 1 result
 getMangaByUrlAndSource:
 SELECT *
 FROM mangas
 WHERE url = :url
-AND source = :source
-LIMIT 1;
+AND source = :source;
 
 getFavorites:
 SELECT *
@@ -119,7 +118,7 @@ SELECT *
 FROM mangas
 WHERE favorite = 1
 AND LOWER(title) = :title
-AND _id != :id;
+AND id != :id;
 
 getUpcomingManga:
 SELECT *
@@ -176,7 +175,7 @@ UPDATE mangas SET
     calculate_interval = coalesce(:calculateInterval, calculate_interval),
     version = coalesce(:version, version),
     is_syncing = coalesce(:isSyncing, is_syncing)
-WHERE _id = :mangaId;
+WHERE id = :mangaId;
 
 selectLastInsertedRowId:
 SELECT last_insert_rowid();
diff --git a/data/src/main/sqldelight/tachiyomi/data/mangas_categories.sq b/data/src/main/sqldelight/tachiyomi/data/mangas_categories.sq
index 3d8c815c9..ac7184715 100644
--- a/data/src/main/sqldelight/tachiyomi/data/mangas_categories.sq
+++ b/data/src/main/sqldelight/tachiyomi/data/mangas_categories.sq
@@ -1,18 +1,21 @@
 CREATE TABLE mangas_categories(
-    _id INTEGER NOT NULL PRIMARY KEY,
     manga_id INTEGER NOT NULL,
     category_id INTEGER NOT NULL,
-    FOREIGN KEY(category_id) REFERENCES categories (_id)
+    UNIQUE(manga_id, category_id) ON CONFLICT IGNORE,
+    FOREIGN KEY(category_id) REFERENCES categories(id)
     ON DELETE CASCADE,
-    FOREIGN KEY(manga_id) REFERENCES mangas (_id)
+    FOREIGN KEY(manga_id) REFERENCES mangas(id)
     ON DELETE CASCADE
 );
 
+CREATE INDEX mangas_categories_manga_id_index ON mangas_categories(manga_id);
+CREATE INDEX mangas_categories_category_id_index ON mangas_categories(category_id);
+
 CREATE TRIGGER insert_manga_category_update_version AFTER INSERT ON mangas_categories
 BEGIN
     UPDATE mangas
     SET version = version + 1
-    WHERE _id = new.manga_id AND (SELECT is_syncing FROM mangas WHERE _id = new.manga_id) = 0;
+    WHERE id = new.manga_id AND (SELECT is_syncing FROM mangas WHERE id = new.manga_id) = 0;
 END;
 
 insert:
@@ -21,4 +24,4 @@ VALUES (:mangaId, :categoryId);
 
 deleteMangaCategoryByMangaId:
 DELETE FROM mangas_categories
-WHERE manga_id = :mangaId;
\ No newline at end of file
+WHERE manga_id = :mangaId;
diff --git a/data/src/main/sqldelight/tachiyomi/data/sources.sq b/data/src/main/sqldelight/tachiyomi/data/sources.sq
index aac60bb78..9a8396f28 100644
--- a/data/src/main/sqldelight/tachiyomi/data/sources.sq
+++ b/data/src/main/sqldelight/tachiyomi/data/sources.sq
@@ -1,5 +1,5 @@
 CREATE TABLE sources(
-    _id INTEGER NOT NULL PRIMARY KEY,
+    id INTEGER NOT NULL PRIMARY KEY,
     lang TEXT NOT NULL,
     name TEXT NOT NULL
 );
@@ -11,14 +11,14 @@ FROM sources;
 findOne:
 SELECT *
 FROM sources
-WHERE _id = :id;
+WHERE id = :id;
 
 upsert:
-INSERT INTO sources(_id, lang, name)
+INSERT INTO sources(id, lang, name)
 VALUES (:id, :lang, :name)
-ON CONFLICT(_id)
+ON CONFLICT(id)
 DO UPDATE
 SET
     lang = :lang,
     name = :name
-WHERE _id = :id;
\ No newline at end of file
+WHERE id = :id;
diff --git a/data/src/main/sqldelight/tachiyomi/migrations/4.sqm b/data/src/main/sqldelight/tachiyomi/migrations/4.sqm
new file mode 100644
index 000000000..4983ad041
--- /dev/null
+++ b/data/src/main/sqldelight/tachiyomi/migrations/4.sqm
@@ -0,0 +1,252 @@
+import eu.kanade.tachiyomi.source.model.UpdateStrategy;
+import java.util.Date;
+import kotlin.Boolean;
+import kotlin.String;
+import kotlin.collections.List;
+
+DROP INDEX IF EXISTS chapters_manga_id_index;
+DROP INDEX IF EXISTS chapters_unread_by_manga_index;
+DROP INDEX IF EXISTS history_history_chapter_id_index;
+DROP INDEX IF EXISTS library_favorite_index;
+DROP INDEX IF EXISTS mangas_url_index;
+
+DROP VIEW IF EXISTS historyView;
+DROP VIEW IF EXISTS libraryView;
+DROP VIEW IF EXISTS updatesView;
+
+ALTER TABLE mangas RENAME TO manga_temp;
+CREATE TABLE mangas(
+    id INTEGER NOT NULL PRIMARY KEY,
+    source INTEGER NOT NULL,
+    url TEXT NOT NULL,
+    artist TEXT,
+    author TEXT,
+    description TEXT,
+    genre TEXT AS List<String>,
+    title TEXT NOT NULL,
+    status INTEGER NOT NULL,
+    thumbnail_url TEXT,
+    favorite INTEGER AS Boolean NOT NULL,
+    last_update INTEGER,
+    next_update INTEGER,
+    initialized INTEGER AS Boolean NOT NULL,
+    viewer INTEGER NOT NULL,
+    chapter_flags INTEGER NOT NULL,
+    cover_last_modified INTEGER NOT NULL,
+    date_added INTEGER NOT NULL,
+    update_strategy INTEGER AS UpdateStrategy NOT NULL DEFAULT 0,
+    calculate_interval INTEGER DEFAULT 0 NOT NULL,
+    last_modified_at INTEGER NOT NULL DEFAULT 0,
+    favorite_modified_at INTEGER,
+    version INTEGER NOT NULL DEFAULT 0,
+    is_syncing INTEGER NOT NULL DEFAULT 0,
+    UNIQUE(source, url) ON CONFLICT IGNORE
+);
+INSERT INTO mangas
+SELECT
+    _id, source, url, artist, author, description, genre, title, status, thumbnail_url, favorite,
+    last_update, next_update, initialized, viewer, chapter_flags, cover_last_modified, date_added,
+    update_strategy, calculate_interval, last_modified_at, favorite_modified_at, version, is_syncing
+FROM manga_temp;
+
+ALTER TABLE categories RENAME TO categories_temp;
+CREATE TABLE categories(
+    id INTEGER NOT NULL PRIMARY KEY,
+    name TEXT NOT NULL,
+    `order` INTEGER NOT NULL,
+    flags INTEGER NOT NULL,
+    UNIQUE(`order`) ON CONFLICT ABORT
+);
+INSERT INTO categories
+SELECT _id, name, (RANK() OVER (ORDER BY sort)) - 2, flags
+FROM categories_temp;
+
+ALTER TABLE chapters RENAME TO chapters_temp;
+CREATE TABLE chapters(
+    id INTEGER NOT NULL PRIMARY KEY,
+    manga_id INTEGER NOT NULL,
+    url TEXT NOT NULL,
+    name TEXT NOT NULL,
+    scanlator TEXT,
+    read INTEGER AS Boolean NOT NULL,
+    bookmark INTEGER AS Boolean NOT NULL,
+    last_page_read INTEGER NOT NULL,
+    chapter_number REAL NOT NULL,
+    source_order INTEGER NOT NULL,
+    date_fetch INTEGER NOT NULL,
+    date_upload INTEGER NOT NULL,
+    last_modified_at INTEGER NOT NULL DEFAULT 0,
+    version INTEGER NOT NULL DEFAULT 0,
+    is_syncing INTEGER NOT NULL DEFAULT 0,
+    UNIQUE(manga_id, url) ON CONFLICT IGNORE,
+    FOREIGN KEY(manga_id) REFERENCES mangas(id)
+    ON DELETE CASCADE
+);
+INSERT INTO chapters
+SELECT
+    _id, manga_id, url, name, scanlator, read, bookmark, last_page_read, chapter_number, source_order,
+    date_fetch, date_upload, last_modified_at, version, is_syncing
+FROM chapters_temp;
+
+ALTER TABLE excluded_scanlators RENAME TO excluded_scanlators_temp;
+CREATE TABLE excluded_scanlators(
+    manga_id INTEGER NOT NULL,
+    scanlator TEXT NOT NULL,
+    UNIQUE(manga_id, scanlator) ON CONFLICT IGNORE,
+    FOREIGN KEY(manga_id) REFERENCES mangas(id)
+    ON DELETE CASCADE
+);
+INSERT INTO excluded_scanlators
+SELECT manga_id, scanlator
+FROM excluded_scanlators_temp;
+
+ALTER TABLE history RENAME TO history_temp;
+CREATE TABLE history(
+    id INTEGER NOT NULL PRIMARY KEY,
+    chapter_id INTEGER NOT NULL UNIQUE,
+    last_read INTEGER AS Date,
+    time_read INTEGER NOT NULL,
+    FOREIGN KEY(chapter_id) REFERENCES chapters (id)
+    ON DELETE CASCADE
+);
+INSERT INTO history
+SELECT history_id, history_chapter_id, history_last_read, history_time_read
+FROM history_temp;
+
+ALTER TABLE mangas_categories RENAME TO mangas_categories_temp;
+CREATE TABLE mangas_categories(
+    manga_id INTEGER NOT NULL,
+    category_id INTEGER NOT NULL,
+    UNIQUE(manga_id, category_id) ON CONFLICT IGNORE,
+    FOREIGN KEY(category_id) REFERENCES categories(id)
+    ON DELETE CASCADE,
+    FOREIGN KEY(manga_id) REFERENCES mangas(id)
+    ON DELETE CASCADE
+);
+INSERT INTO mangas_categories
+SELECT manga_id, category_id
+FROM mangas_categories_temp;
+
+ALTER TABLE manga_sync RENAME TO manga_sync_temp;
+CREATE TABLE manga_sync(
+    id INTEGER NOT NULL PRIMARY KEY,
+    manga_id INTEGER NOT NULL,
+    sync_id INTEGER NOT NULL,
+    remote_id INTEGER NOT NULL,
+    library_id INTEGER,
+    title TEXT NOT NULL,
+    last_chapter_read REAL NOT NULL,
+    total_chapters INTEGER NOT NULL,
+    status INTEGER NOT NULL,
+    score REAL NOT NULL,
+    remote_url TEXT NOT NULL,
+    start_date INTEGER NOT NULL,
+    finish_date INTEGER NOT NULL,
+    UNIQUE(manga_id, sync_id) ON CONFLICT IGNORE,
+    FOREIGN KEY(manga_id) REFERENCES mangas(id)
+    ON DELETE CASCADE
+);
+INSERT INTO manga_sync
+SELECT
+    _id, manga_id, sync_id, remote_id, library_id, title, last_chapter_read, total_chapters, status,
+    score, remote_url, start_date, finish_date
+FROM manga_sync_temp;
+
+CREATE INDEX chapters_manga_id_index ON chapters(manga_id);
+CREATE INDEX excluded_scanlators_manga_id_index ON excluded_scanlators(manga_id);
+CREATE INDEX history_chapter_id_index ON history(chapter_id);
+CREATE INDEX manga_sync_manga_id_index ON manga_sync(manga_id);
+CREATE INDEX library_favorite_index ON mangas(favorite) WHERE favorite = 1;
+CREATE INDEX mangas_url_index ON mangas(url);
+CREATE INDEX mangas_categories_manga_id_index ON mangas_categories(manga_id);
+CREATE INDEX mangas_categories_category_id_index ON mangas_categories(category_id);
+
+CREATE VIEW historyView AS
+SELECT
+    history.id AS id,
+    mangas.id AS mangaId,
+    chapters.id AS chapterId,
+    mangas.title,
+    mangas.thumbnail_url AS thumbnailUrl,
+    mangas.source,
+    mangas.favorite,
+    mangas.cover_last_modified,
+    chapters.chapter_number AS chapterNumber,
+    history.last_read AS readAt,
+    history.time_read AS readDuration,
+    max_last_read.last_read AS maxReadAt,
+    max_last_read.chapter_id AS maxReadAtChapterId
+FROM mangas
+JOIN chapters
+ON mangas.id = chapters.manga_id
+JOIN history
+ON chapters.id = history.chapter_id
+JOIN (
+    SELECT chapters.manga_id,chapters.id AS chapter_id, MAX(history.last_read) AS last_read
+    FROM chapters JOIN history
+    ON chapters.id = history.chapter_id
+    GROUP BY chapters.manga_id
+) AS max_last_read;
+
+CREATE VIEW libraryView AS
+SELECT
+    M.*,
+    coalesce(C.total, 0) AS totalCount,
+    coalesce(C.readCount, 0) AS readCount,
+    coalesce(C.latestUpload, 0) AS latestUpload,
+    coalesce(C.fetchedAt, 0) AS chapterFetchedAt,
+    coalesce(C.lastRead, 0) AS lastRead,
+    coalesce(C.bookmarkCount, 0) AS bookmarkCount,
+    coalesce(MC.category_id, 0) AS category
+FROM mangas M
+LEFT JOIN(
+    SELECT
+        chapters.manga_id,
+        count(*) AS total,
+        sum(read) AS readCount,
+        coalesce(max(chapters.date_upload), 0) AS latestUpload,
+        coalesce(max(history.last_read), 0) AS lastRead,
+        coalesce(max(chapters.date_fetch), 0) AS fetchedAt,
+        sum(chapters.bookmark) AS bookmarkCount
+    FROM chapters
+    LEFT JOIN excluded_scanlators
+    ON chapters.manga_id = excluded_scanlators.manga_id
+    AND chapters.scanlator = excluded_scanlators.scanlator
+    LEFT JOIN history
+    ON chapters.id = history.chapter_id
+    WHERE excluded_scanlators.scanlator IS NULL
+    GROUP BY chapters.manga_id
+) AS C
+ON M.id = C.manga_id
+LEFT JOIN mangas_categories AS MC
+ON MC.manga_id = M.id
+WHERE M.favorite = 1;
+
+CREATE VIEW updatesView AS
+SELECT
+    mangas.id AS mangaId,
+    mangas.title AS mangaTitle,
+    chapters.id AS chapterId,
+    chapters.name AS chapterName,
+    chapters.scanlator,
+    chapters.read,
+    chapters.bookmark,
+    chapters.last_page_read,
+    mangas.source,
+    mangas.favorite,
+    mangas.thumbnail_url AS thumbnailUrl,
+    mangas.cover_last_modified AS coverLastModified,
+    chapters.date_upload AS dateUpload,
+    chapters.date_fetch AS datefetch
+FROM mangas JOIN chapters
+ON mangas.id = chapters.manga_id
+WHERE favorite = 1
+AND date_fetch > date_added
+ORDER BY date_fetch DESC;
+
+DROP TABLE IF EXISTS manga_temp;
+DROP TABLE IF EXISTS categories_temp;
+DROP TABLE IF EXISTS chapters_temp;
+DROP TABLE IF EXISTS history_temp;
+DROP TABLE IF EXISTS mangas_categories_temp;
+DROP TABLE IF EXISTS manga_sync_temp;
diff --git a/data/src/main/sqldelight/tachiyomi/view/historyView.sq b/data/src/main/sqldelight/tachiyomi/view/historyView.sq
index bdaeb5259..f79fe5c47 100644
--- a/data/src/main/sqldelight/tachiyomi/view/historyView.sq
+++ b/data/src/main/sqldelight/tachiyomi/view/historyView.sq
@@ -1,8 +1,8 @@
 CREATE VIEW historyView AS
 SELECT
-    history._id AS id,
-    mangas._id AS mangaId,
-    chapters._id AS chapterId,
+    history.id AS id,
+    mangas.id AS mangaId,
+    chapters.id AS chapterId,
     mangas.title,
     mangas.thumbnail_url AS thumbnailUrl,
     mangas.source,
@@ -15,16 +15,15 @@ SELECT
     max_last_read.chapter_id AS maxReadAtChapterId
 FROM mangas
 JOIN chapters
-ON mangas._id = chapters.manga_id
+ON mangas.id = chapters.manga_id
 JOIN history
-ON chapters._id = history.chapter_id
+ON chapters.id = history.chapter_id
 JOIN (
-    SELECT chapters.manga_id,chapters._id AS chapter_id, MAX(history.last_read) AS last_read
+    SELECT chapters.manga_id,chapters.id AS chapter_id, MAX(history.last_read) AS last_read
     FROM chapters JOIN history
-    ON chapters._id = history.chapter_id
+    ON chapters.id = history.chapter_id
     GROUP BY chapters.manga_id
-) AS max_last_read
-ON chapters.manga_id = max_last_read.manga_id;
+) AS max_last_read;
 
 history:
 SELECT
diff --git a/data/src/main/sqldelight/tachiyomi/view/libraryView.sq b/data/src/main/sqldelight/tachiyomi/view/libraryView.sq
index 0a5d28543..f216faffc 100644
--- a/data/src/main/sqldelight/tachiyomi/view/libraryView.sq
+++ b/data/src/main/sqldelight/tachiyomi/view/libraryView.sq
@@ -23,13 +23,13 @@ LEFT JOIN(
     ON chapters.manga_id = excluded_scanlators.manga_id
     AND chapters.scanlator = excluded_scanlators.scanlator
     LEFT JOIN history
-    ON chapters._id = history.chapter_id
+    ON chapters.id = history.chapter_id
     WHERE excluded_scanlators.scanlator IS NULL
     GROUP BY chapters.manga_id
 ) AS C
-ON M._id = C.manga_id
+ON M.id = C.manga_id
 LEFT JOIN mangas_categories AS MC
-ON MC.manga_id = M._id
+ON MC.manga_id = M.id
 WHERE M.favorite = 1;
 
 library:
diff --git a/data/src/main/sqldelight/tachiyomi/view/updatesView.sq b/data/src/main/sqldelight/tachiyomi/view/updatesView.sq
index 5fdd3ea75..94ad5fad6 100644
--- a/data/src/main/sqldelight/tachiyomi/view/updatesView.sq
+++ b/data/src/main/sqldelight/tachiyomi/view/updatesView.sq
@@ -1,8 +1,8 @@
 CREATE VIEW updatesView AS
 SELECT
-    mangas._id AS mangaId,
+    mangas.id AS mangaId,
     mangas.title AS mangaTitle,
-    chapters._id AS chapterId,
+    chapters.id AS chapterId,
     chapters.name AS chapterName,
     chapters.scanlator,
     chapters.read,
@@ -15,7 +15,7 @@ SELECT
     chapters.date_upload AS dateUpload,
     chapters.date_fetch AS datefetch
 FROM mangas JOIN chapters
-ON mangas._id = chapters.manga_id
+ON mangas.id = chapters.manga_id
 WHERE favorite = 1
 AND date_fetch > date_added
 ORDER BY date_fetch DESC;