Add missing indexes to improve database query performance (#2950)

(cherry picked from commit cae9fbf3213987e7d263845431dfac10a2ecb3b0)

# Conflicts:
#	data/src/main/sqldelight/tachiyomi/migrations/10.sqm

data/src/main/sqldelight/tachiyomi/data/chapters.sq

@@ -22,6 +22,7 @@ CREATE TABLE chapters(
 
 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 INDEX idx_chapters_url ON chapters(url);
 
 CREATE TRIGGER update_last_modified_at_chapters
 AFTER UPDATE ON chapters

data/src/main/sqldelight/tachiyomi/data/excluded_scanlators.sq

@@ -6,6 +6,7 @@ CREATE TABLE excluded_scanlators(
 );
 
 CREATE INDEX excluded_scanlators_manga_id_index ON excluded_scanlators(manga_id);
+CREATE INDEX idx_excluded_scanlators_scanlator ON excluded_scanlators(scanlator);
 
 insert:
 INSERT INTO excluded_scanlators(manga_id, scanlator)

data/src/main/sqldelight/tachiyomi/data/history.sq

@@ -10,6 +10,7 @@ CREATE TABLE history(
 );
 
 CREATE INDEX history_history_chapter_id_index ON history(chapter_id);
+CREATE INDEX idx_history_last_read ON history(last_read);
 
 getHistoryByMangaId:
 SELECT

data/src/main/sqldelight/tachiyomi/data/manga_sync.sq

@@ -20,6 +20,8 @@ CREATE TABLE manga_sync(
     ON DELETE CASCADE
 );
 
+CREATE INDEX idx_manga_sync_manga_id ON manga_sync(manga_id);
+
 delete:
 DELETE FROM manga_sync
 WHERE manga_id = :mangaId AND sync_id = :syncId;

data/src/main/sqldelight/tachiyomi/data/mangas.sq

@@ -34,6 +34,7 @@ CREATE TABLE mangas(
 
 CREATE INDEX library_favorite_index ON mangas(favorite) WHERE favorite = 1;
 CREATE INDEX mangas_url_index ON mangas(url);
+CREATE INDEX idx_mangas_source ON mangas(source);
 
 CREATE TRIGGER update_last_favorited_at_mangas
 AFTER UPDATE OF favorite ON mangas

data/src/main/sqldelight/tachiyomi/data/mangas_categories.sq

@@ -8,6 +8,9 @@ CREATE TABLE mangas_categories(
     ON DELETE CASCADE
 );
 
+CREATE INDEX idx_mangas_categories_manga_id ON mangas_categories(manga_id);
+CREATE INDEX idx_mangas_categories_category_id ON mangas_categories(category_id);
+
 CREATE TRIGGER insert_manga_category_update_version AFTER INSERT ON mangas_categories
 BEGIN
     UPDATE mangas

data/src/main/sqldelight/tachiyomi/migrations/38.sqm

@@ -27,3 +27,13 @@ AND chapters.scanlator = excluded_scanlators.scanlator
 WHERE favorite = 1
 AND date_fetch > date_added
 ORDER BY date_fetch DESC;
+
+-- Migration to add performance indexes
+
+CREATE INDEX IF NOT EXISTS idx_mangas_source ON mangas(source);
+CREATE INDEX IF NOT EXISTS idx_chapters_url ON chapters(url);
+CREATE INDEX IF NOT EXISTS idx_mangas_categories_manga_id ON mangas_categories(manga_id);
+CREATE INDEX IF NOT EXISTS idx_mangas_categories_category_id ON mangas_categories(category_id);
+CREATE INDEX IF NOT EXISTS idx_excluded_scanlators_scanlator ON excluded_scanlators(scanlator);
+CREATE INDEX IF NOT EXISTS idx_manga_sync_manga_id ON manga_sync(manga_id);
+CREATE INDEX IF NOT EXISTS idx_history_last_read ON history(last_read);