Why Your SQL Works in Dev but Fails in Production скачать в хорошем качестве

Why Your SQL Works in Dev but Fails in Production

Your SQL query works perfectly in development. Indexes exist. Data is small. Everything is fast. Then it hits production… and performance collapses. In this video, we break down why databases behave differently in production — without tricks, hacks, or textbook theory. You’ll learn: Why databases don’t execute SQL the way you write it How the optimizer really chooses execution plans Why indexes don’t guarantee speed How statistics silently control performance Why JOIN order and memory matter more than syntax Why LIMIT and hints often backfire Why queries fly in dev but fail under real load This video is for developers who want to think like production systems, not just write correct SQL. No shortcuts. No magic commands. Just how databases actually work at scale. If you want to understand why production behaves the way it does, subscribe to Technical V.