SQL NULL Handling: The Ultimate Guide for Beginners
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SQL NULL Handling: The Ultimate Guide for Beginners
Dive into the world of SQL NULL values! 🤿 This comprehensive tutorial is designed for beginners to master handling NULLs effectively in SQL databases. We'll cover everything from understanding what NULL really means (it's not zero or an empty string!) to using powerful functions like COALESCE and NULLIF to manage missing data like a pro ...
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