jsDelivr
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KeyCDN
cdnjs
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SQLBolt
SQLZOO
DataLemur
The Odin Project
SQL School
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SQLBolt is recommended for beginners who are new to SQL or those with limited experience who need a refresher on basic concepts. It is also useful for anyone who prefers learning through interactive and practical exercises rather than purely theoretical content.
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jsDelivr's answer
jsDelivr is the only free CDN that aims to be production ready even for the most critical workloads. It has multiple failover systems for all of its components to ensure 100% uptime and uses multiple CDNs and datacenters for better performance.
Based on our record, SQLBolt seems to be a lot more popular than jsDelivr. While we know about 125 links to SQLBolt, we've tracked only 1 mention of jsDelivr. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
SEEKING WORK | Remote | Worldwide Hi HN! I'm a full-stack developer with a strong frontend focus — 10+ years of experience building fast, clean, and scalable web apps. On the frontend, I work with React, Vue, and Svelte. On the backend, I’ve shipped systems using Go, Python, and Node (Nest.js, Django, FastAPI, etc). I enjoy working on thoughtful product design and efficient APIs just as much as hacking on UI.... - Source: Hacker News / over 1 year ago
Disclosure: I help build these simulators; they are part of 50+ free DevOps games and simulators. For more practice beyond them, SQLBolt and PostgreSQL Exercises are excellent and free, and SQL Murder Mystery is the most fun anyone has ever had with a schema. - Source: dev.to / 2 days ago
I hope this helps you with interview prep as it does to me. I find https://sqlbolt.com/ super helpful if you want to learn SQL queries in depth. Thanks! - Source: dev.to / 6 months ago
SQLBolt - Introduction to SQL - Browser-based interactive tutorial with progressive lessons and immediate practice exercises, offering a quick and practical way to learn SQL fundamentals directly in your browser without setup, though it lacks formal certification and may not cover advanced database administration topics. - Source: dev.to / 9 months ago
To overcome these challenges, I relied on SQL documentation, online tutorials, and practice sites like DataLemur and SQLBolt. These resources were invaluable in helping me build confidence and refine my skills. - Source: dev.to / 9 months ago
SQLBolt focuses exclusively on giving you hands-on practice with increasingly complex queries. The platform starts with simple SELECT statements and progressively moves to complex joins and subqueries. You'll get immediate visual feedback while the site explains concepts briefly before each practice section. - Source: dev.to / over 1 year ago
CloudFlare - Cloudflare is a global network designed to make everything you connect to the Internet secure, private, fast, and reliable.
SQLZOO - SQLZoo includes tutorials and reference to support people learning SQL. It features:
KeyCDN - KeyCDN is a high-performance Content Delivery Network (CDN). Lowest price globally at $0.04/GB with HTTP/2 Support and free Origin Shield.
DataLemur - Practice SQL Interview Questions & Data Science Interview Questions asked by FAANG.
cdnjs - An open source community driven JS/CSS CDN.
The Odin Project - How it works. This is the website we wish we had when we were learning on our own. We scour the internet looking for only the best resources to supplement your learning and present them in a logical order.