How NULL values work in SQL queries | SQL Interview Question

Опубликовано: 30 Сентябрь 2024
на канале: Manish Sharma

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Dive into a tricky SQL interview question with us! Watch as we analyze a simple CASE WHEN statement, comparing NULL with another NULL. Explore the complete PL/SQL course for FREE on my website at https://www.rebellionrider.com/catego...

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In this SQL interview question breakdown, we dive into the intriguing world of NULL values. 🤔 Ever wondered what happens when you compare NULL to another NULL? 🤷‍♂️ I explore the unexpected behavior, clarify the logic, and reveal why NULL doesn’t play by the usual rules. Whether you’re a seasoned SQL pro or just starting out, this video sheds light on a fundamental concept that can trip up even the most experienced programmers. 🚀

🎯 Key Takeaways:

Learn why NULL represents the “unknown” or “missing” value.
Discover the ternary logic behind NULL comparisons (True, False, and Unknown).
Uncover the best practices for handling NULLs in your SQL queries.
Get ready to impress in your next technical interview! 💡
👍 If you found this video helpful, don’t forget to hit the like button and subscribe for more SQL tips and tricks! 📺🔔"