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What Is the NOT NULL Constraint? 🚫 Why Are Empty Values Not Allowed? | SQL Tutorial
What is the NOT NULL Constraint in SQL, and why doesn't it allow empty values? 🚫 In this 45-second SQL Short, you'll learn how the NOT NULL Constraint ensures important columns always contain a value, with a simple real-world example. 📚 In this Short: What is the NOT NULL Constraint? Why are NULL values not allowed? When should you use ...
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