2025-02-19

Build your own SQLite, Part 5: Evaluating queries

A technical guide explores the implementation of a SQLite query evaluator, focusing on SELECT statement execution and database operation fundamentals. The implementation includes setting up a test database, creating a query engine with Operator and Planner components, and establishing a REPL interface for query testing.

Original archive.is archive.ph web.archive.org

Log in to get one-click access to archived versions of this article.

read comments on news aggregators:

Related articles

Effective Rust

A comprehensive guide presenting 35 specific methods to enhance Rust programming practices, covering essential topics from type systems to FFI boundaries. The guide is structured into six main sections, focusing on types, traits, concepts, dependencies, tooling, and advanced Rust features. Each item provides detailed insights for writing more effective and maintainable Rust code.

SQLite-on-the-Server Is Misunderstood: Better At Hyper-Scale Than Micro-Scale

SQLite's strengths shine particularly well at scale, offering advantages like dynamic scaling, infinite cheap databases, and global distribution through platforms like Cloudflare Durable Objects and Turso. The SQLite-per-partition approach provides local ACID transactions and efficient I/O, making it a viable alternative to traditional partitioned databases for large-scale deployments.

Sponsor @servo on GitHub Sponsors

Servo, a web browser rendering engine written in Rust, offers developers a lightweight, high-performance solution for embedding web technologies. Originally created by Mozilla Research in 2012 and now under Linux Foundation Europe, the project focuses on WebGL and WebGPU support for desktop, mobile, and embedded applications. The project advances web standards and platform development through its unique approach, distinct from Gecko and WebKit.

Claude 3.7 Sonnet and Claude Code

Anthropic introduces Claude 3.7 Sonnet, a groundbreaking hybrid reasoning model featuring instant responses and extended thinking capabilities, alongside Claude Code for agentic coding tasks. The model demonstrates superior performance in coding and web development, with significant improvements in handling complex codebases and advanced tool usage. Available across multiple platforms, it maintains the same pricing while offering enhanced reasoning capabilities and GitHub integration.

Tokio + prctl = nasty bug

A detailed analysis of a bug in HyperQueue where tasks were unexpectedly terminated after 10 seconds due to an interaction between tokio thread management, PR_SET_PDEATHSIG, and process spawning optimization. The bug emerged from moving process spawning to a worker thread, causing processes to receive SIGTERM when tokio cleaned up idle threads.

RUSTSEC-2025-0007: ring: *ring* is unmaintained

The ring cryptography package maintenance status underwent changes, initially being declared unmaintained but later receiving security-focused maintenance from the rustls team. The advisory highlights potential security implications for users of the ring crate, with the rustls team committed to addressing critical security issues.