SQL UNIQUE Constraint | Prevent Duplicate Data in Your Tables | SQL | CONSTRAINT
Learn how to use the UNIQUE constraint in SQL to ensure your data stays accurate and free of duplicates! In this video, we cover:
✅ What is the UNIQUE constraint
✅ How it differs from PRIMARY KEY
✅ How to apply UNIQUE to one or more columns
✅ Real-world examples and use cases
✅ Common mistakes to avoid
Whether you're a beginner or brushing up your SQL skills, this video is a must-watch to understand data integrity in relational databases.
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