Best results yet, just use (user, watch) for quest ID.

migrations/20230426221940_init.up.sql

@@ -29,7 +29,6 @@ create table if not exists watches (
 
 -- table of what people want to watch
 create table if not exists witch_watch (
-  id blob not null primary key,
   witch blob not null,
   watch blob not null,
   party blob, -- list of witch IDs, but we can also scan for friends that want to watch the same thing
@@ -40,8 +39,9 @@ create table if not exists witch_watch (
   when_watched int,
   last_updated int not null default (unixepoch()),
   foreign key (witch) references witches (id) on delete cascade on update no action,
-  foreign key (watch) references watches (id) on delete cascade on update no action
-);
+  foreign key (watch) references watches (id) on delete cascade on update no action,
+  primary key (witch, watch)
+) without rowid;
 
 -- friend lists; this should really be a graph db, maybe the whole thing should be
 -- TODO: look into replacing sqlite with https://www.cozodb.org/

results.txt

@@ -1,3 +1,3 @@
--rw-r--r-- 1 ardent ardent 17M Jul  6 10:05 /home/ardent/.witch-watch.db
+-rw-r--r-- 1 ardent ardent 16M Jul  6 13:51 /home/ardent/.witch-watch.db
 
-6 seconds to add 98,713 watch quests.
+6 seconds to add 99,612 watch quests.

src/bin/import_users.rs

@@ -119,15 +119,11 @@ async fn add_quests(
     let quests: Vec<WatchQuest> = movies
         .choose_multiple(rng, num_movies)
         .cloned()
-        .map(|movie| {
-            let id = DbId::new();
-            WatchQuest {
-                id,
+        .map(|movie| WatchQuest {
             user,
             watch: movie,
             is_public: true,
             already_watched: false,
-            }
         })
         .collect();
 

src/import_utils.rs

@@ -72,17 +72,16 @@ pub async fn add_watch_quest(db_pool: &SqlitePool, quest: WatchQuest) -> Result<
     if add_watch_quest_impl(db_pool, &quest).await.is_ok() {
         Ok(())
     } else {
-        eprintln!("failed to add {}", quest.id);
+        eprintln!("failed to add {:?}", quest.id());
         Err(())
     }
 }
 
 pub async fn add_watch_quests(pool: &SqlitePool, quests: &[WatchQuest]) -> Result<(), ()> {
     let mut builder =
-        sqlx::QueryBuilder::new("insert into witch_watch (id, witch, watch, public, watched) ");
+        sqlx::QueryBuilder::new("insert into witch_watch (witch, watch, public, watched) ");
     builder.push_values(quests.iter(), |mut b, quest| {
-        b.push_bind(quest.id)
-            .push_bind(quest.user)
+        b.push_bind(quest.user)
             .push_bind(quest.watch)
             .push_bind(quest.is_public)
             .push_bind(quest.already_watched);

src/watches/handlers.rs

@@ -24,7 +24,7 @@ const GET_WATCH_QUERY: &str = "select * from watches where id = $1";
 
 const ADD_WATCH_QUERY: &str = "insert into watches (id, title, kind, release_date, metadata_url, added_by) values ($1, $2, $3, $4, $5, $6)";
 const ADD_WITCH_WATCH_QUERY: &str =
-    "insert into witch_watch (id, witch, watch, public, watched) values ($1, $2, $3, $4, $5)";
+    "insert into witch_watch (witch, watch, public, watched) values ($1, $2, $3, $4)";
 
 const EMPTY_SEARCH_QUERY_STRUCT: SearchQuery = SearchQuery {
     title: None,
@@ -119,7 +119,6 @@ pub async fn post_add_new_watch(
     if let Some(user) = auth.current_user {
         {
             let watch_id = DbId::new();
-            let witch_watch_id = DbId::new();
             let release_date = year_to_epoch(form.year.as_deref());
             let watch = Watch {
                 id: watch_id,
@@ -131,7 +130,6 @@ pub async fn post_add_new_watch(
                 added_by: user.id,
             };
             let quest = WatchQuest {
-                id: witch_watch_id,
                 user: user.id,
                 watch: watch_id,
                 is_public: !form.private,
@@ -173,7 +171,6 @@ pub(crate) async fn add_new_watch_impl(
 
     if let Some(quest) = quest {
         query(ADD_WITCH_WATCH_QUERY)
-            .bind(quest.id)
             .bind(quest.user)
             .bind(quest.watch)
             .bind(quest.is_public)
@@ -204,7 +201,6 @@ pub async fn post_add_watch_quest(
 
 pub async fn add_watch_quest_impl(pool: &SqlitePool, quest: &WatchQuest) -> Result<(), ()> {
     query(ADD_WITCH_WATCH_QUERY)
-        .bind(quest.id)
         .bind(quest.user)
         .bind(quest.watch)
         .bind(quest.is_public)

src/watches/mod.rs

@@ -95,9 +95,14 @@ impl Watch {
 //-************************************************************************
 #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct WatchQuest {
-    pub id: DbId,
     pub user: DbId,
     pub watch: DbId,
     pub is_public: bool,
     pub already_watched: bool,
 }
+
+impl WatchQuest {
+    pub fn id(&self) -> (DbId, DbId) {
+        (self.user, self.watch)
+    }
+}