Скачать или смотреть Which SQL Constraint Allows Only One NULL Value? | SQL Shorts

Do you know which SQL constraint lets you store only one NULL value in a column?
In this quick video, we reveal the answer with a practical example and explain why this is important for database design.

✅ Learn the difference between UNIQUE, PRIMARY KEY, and NOT NULL
✅ Understand how SQL handles NULLs
✅ Great for SQL interviews and real-world projects

🎯 Don’t miss out if you're prepping for SQL interviews or brushing up your DB skills!

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#sqlconstraints

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