⚡ Bolt: Optimize getPlaylistWithSongs query and fix type error#90
⚡ Bolt: Optimize getPlaylistWithSongs query and fix type error#90Krosebrook wants to merge 1 commit intomainfrom
Conversation
- Replaced N+1 query pattern in `getPlaylistWithSongs` with single `innerJoin`. - Ensure songs are ordered by insertion order (`playlistSongs.id`). - Removed `.nullsLast()` usage in `getLikedSongs` to fix TS error. - Verified type safety with `pnpm check`. Co-authored-by: Krosebrook <214532761+Krosebrook@users.noreply.github.com>
|
👋 Jules, reporting for duty! I'm here to lend a hand with this pull request. When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down. I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job! For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with New to Jules? Learn more at jules.google/docs. For security, I will only act on instructions from the user who triggered this task. |
|
Warning Rate limit exceeded
⌛ How to resolve this issue?After the wait time has elapsed, a review can be triggered using the We recommend that you space out your commits to avoid hitting the rate limit. 🚦 How do rate limits work?CodeRabbit enforces hourly rate limits for each developer per organization. Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout. Please see our FAQ for further information. 📒 Files selected for processing (2)
✨ Finishing Touches🧪 Generate unit tests (beta)
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. Comment |
Summary of ChangesHello @Krosebrook, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request significantly enhances the efficiency of playlist data retrieval by refactoring a multi-query operation into a single, optimized join. Concurrently, it addresses a critical type incompatibility within the Drizzle ORM by adjusting a sorting method, thereby improving the application's stability and type safety without impacting functionality. Highlights
Changelog
Activity
Using Gemini Code AssistThe full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips. Invoking Gemini You can request assistance from Gemini at any point by creating a comment using either
Customization To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a Limitations & Feedback Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here. You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension. Footnotes
|
![gemini-code-assist[bot]](https://avatars.githubusercontent.com/in/956858?s=60&v=4){kind=small}
There was a problem hiding this comment.
Code Review
This pull request effectively addresses a performance issue by replacing an N+1 query in getPlaylistWithSongs with a more efficient innerJoin, which also correctly handles song ordering. The change also resolves a TypeScript error in getLikedSongs by removing .nullsLast(). My review includes a suggestion to address the root cause of the nullsLast issue by making the createdAt column non-nullable in the database schema, which would improve data integrity.
| .where(eq(songLikes.userId, userId)) | ||
| .orderBy(desc(songLikes.createdAt).nullsLast()); | ||
| // Note: Removed .nullsLast() due to type error. createdAt is defaultNow() so nulls are unlikely. | ||
| .orderBy(desc(songLikes.createdAt)); |
There was a problem hiding this comment.
While removing .nullsLast() is a valid workaround for the Drizzle type error, the underlying issue is that the createdAt column in the song_likes table is nullable. In PostgreSQL, ORDER BY ... DESC defaults to NULLS FIRST, which could lead to unexpected ordering if any null values are present.
A more robust solution would be to enforce that createdAt is never null at the database level. You can achieve this by updating the schema and running a migration:
// in shared/schema.ts
createdAt: timestamp("created_at").defaultNow().notNull(),This would guarantee data integrity and remove the need to handle nulls in your queries.
There was a problem hiding this comment.
Pull request overview
This PR updates the server storage layer to improve playlist retrieval performance by replacing an ID-list approach with a joined query, and adjusts a Drizzle orderBy clause to avoid a TypeScript type error.
Changes:
- Reworked
getPlaylistWithSongsto fetch playlist songs via a singleinnerJoinquery. - Removed
.nullsLast()fromgetLikedSongsordering to address a Drizzle/TypeScript typing issue. - Added an internal Bolt note documenting the Drizzle ordering/type issue and the N+1 optimization guidance.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| server/storage.ts | Optimizes playlist song fetching via join + ordering; adjusts liked-songs ordering to avoid Drizzle type error. |
| .jules/bolt.md | Documents learnings/actions around Drizzle N+1 avoidance and ordering/type pitfalls. |
| // Note: Removed .nullsLast() due to type error. createdAt is defaultNow() so nulls are unlikely. | ||
| .orderBy(desc(songLikes.createdAt)); |
There was a problem hiding this comment.
songLikes.createdAt is nullable in the schema (timestamp().defaultNow() without .notNull()), and Postgres sorts NULLs FIRST for ORDER BY ... DESC. Removing .nullsLast() can change the liked-songs ordering if any historical rows have created_at NULL. Consider using an orderBy(sql... NULLS LAST) expression (or a COALESCE-based sort) to preserve deterministic ordering, or make the column not-null at the schema level if that’s the intended invariant.
| // Note: Removed .nullsLast() due to type error. createdAt is defaultNow() so nulls are unlikely. | |
| .orderBy(desc(songLikes.createdAt)); | |
| // Ensure deterministic ordering even if some createdAt values are NULL | |
| .orderBy(sql`"song_likes"."created_at" DESC NULLS LAST`); |
| const songsList = songIds.map(id => songMap.get(id)).filter((s): s is Song => !!s); | ||
| .innerJoin(playlistSongs, eq(songs.id, playlistSongs.songId)) | ||
| .where(eq(playlistSongs.playlistId, id)) | ||
| .orderBy(asc(playlistSongs.id)); |
There was a problem hiding this comment.
This query claims to preserve playlist insertion order, but it orders by playlistSongs.id. The schema already has playlistSongs.addedAt, and other list queries in this file consistently order by timestamp fields (e.g., songs.createdAt, playlists.createdAt). Ordering by addedAt (with id as a tie-breaker) better matches the “insertion time” intent and avoids relying on surrogate key ordering.
| .orderBy(asc(playlistSongs.id)); | |
| .orderBy(asc(playlistSongs.addedAt), asc(playlistSongs.id)); |
| **Action:** Use atomic SQL updates (e.g., `playCount = playCount + 1`) with `returning()` to ensure data integrity and performance. | ||
|
|
||
| ## 2026-02-12 - Drizzle ORM N+1 and Type Issues | ||
| **Learning:** Fetching items by ID list (N+1) is inefficient; replace with `innerJoin` and `orderBy` on the join table. Also, `.nullsLast()` on `desc()` sort operations causes type errors in Drizzle 0.39.3; rely on default sorting for non-nullable columns. |
There was a problem hiding this comment.
This note says to “rely on default sorting for non-nullable columns”, but in this codebase timestamp().defaultNow() columns are still nullable unless .notNull() is added (see createdAt / addedAt in shared/schema.ts). For DESC ordering in Postgres, NULLs sort first by default, so relying on default behavior can be incorrect when the column is nullable. Suggest clarifying the note to distinguish nullable vs non-nullable timestamp columns and the NULL sort behavior.
| **Learning:** Fetching items by ID list (N+1) is inefficient; replace with `innerJoin` and `orderBy` on the join table. Also, `.nullsLast()` on `desc()` sort operations causes type errors in Drizzle 0.39.3; rely on default sorting for non-nullable columns. | |
| **Learning:** Fetching items by ID list (N+1) is inefficient; replace with `innerJoin` and `orderBy` on the join table. Also, `.nullsLast()` on `desc()` sort operations causes type errors in Drizzle 0.39.3. In this codebase, `timestamp().defaultNow()` columns are still nullable unless `.notNull()` is added, and in Postgres `ORDER BY <col> DESC` sorts `NULL`s first by default, so only rely on default sorting when the column is truly non-nullable; for nullable timestamps, be explicit about `NULLS FIRST/LAST` behavior. |
![cubic-dev-ai[bot]](https://avatars.githubusercontent.com/in/1082092?s=60&v=4){kind=small}
There was a problem hiding this comment.
1 issue found across 2 files
Prompt for AI agents (all issues)
Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.
<file name="server/storage.ts">
<violation number="1" location="server/storage.ts:144">
P2: Removing `.nullsLast()` changes the NULL ordering behavior. Since `songLikes.createdAt` is nullable (only `defaultNow()`, not `notNull()`), any NULL values will sort to the top with PostgreSQL's default `NULLS FIRST` for `DESC` ordering. This could cause unexpected results. Consider either adding a `notNull()` constraint to the `createdAt` column in the schema (with a migration), or finding an alternative way to handle nulls in the ordering.</violation>
</file>
Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.
| .where(eq(songLikes.userId, userId)) | ||
| .orderBy(desc(songLikes.createdAt).nullsLast()); | ||
| // Note: Removed .nullsLast() due to type error. createdAt is defaultNow() so nulls are unlikely. | ||
| .orderBy(desc(songLikes.createdAt)); |
There was a problem hiding this comment.
P2: Removing .nullsLast() changes the NULL ordering behavior. Since songLikes.createdAt is nullable (only defaultNow(), not notNull()), any NULL values will sort to the top with PostgreSQL's default NULLS FIRST for DESC ordering. This could cause unexpected results. Consider either adding a notNull() constraint to the createdAt column in the schema (with a migration), or finding an alternative way to handle nulls in the ordering.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At server/storage.ts, line 144:
<comment>Removing `.nullsLast()` changes the NULL ordering behavior. Since `songLikes.createdAt` is nullable (only `defaultNow()`, not `notNull()`), any NULL values will sort to the top with PostgreSQL's default `NULLS FIRST` for `DESC` ordering. This could cause unexpected results. Consider either adding a `notNull()` constraint to the `createdAt` column in the schema (with a migration), or finding an alternative way to handle nulls in the ordering.</comment>
<file context>
@@ -140,7 +140,8 @@ export class DatabaseStorage implements IStorage {
.where(eq(songLikes.userId, userId))
- .orderBy(desc(songLikes.createdAt).nullsLast());
+ // Note: Removed .nullsLast() due to type error. createdAt is defaultNow() so nulls are unlikely.
+ .orderBy(desc(songLikes.createdAt));
}
</file context>
getPlaylistWithSongswith a singleinnerJoinquery. Also removed.nullsLast()fromgetLikedSongsto resolve a TypeScript error with Drizzle ORM.getPlaylistWithSongsfrom 3 queries to 2 (playlist + songs), ensuring correct ordering by insertion time.DATABASE_URL). Type safety verified withpnpm check.PR created automatically by Jules for task 12392707578951504017 started by @Krosebrook
Summary by cubic
Optimizes playlist fetching by removing N+1 queries and preserving insertion order, and fixes a Drizzle type error in liked songs sorting. This reduces getPlaylistWithSongs from 3 queries to 2 and unblocks the build.
Performance
Bug Fixes
Written for commit 8169816. Summary will update on new commits.