📌 What is CHECK Constraint in SQL? Learn Fast! #shorts

Learn how to use the SQL CHECK constraint to enforce data validation rules directly at the table level! This quick tutorial explains how to add a CHECK clause in your CREATE TABLE or ALTER TABLE statements—perfect for beginners and job interviews. ✅📊

✅ Syntax + Real Example
✅ Prevent invalid data entry
✅ Easy to understand – in under 60 seconds!

Level up your SQL skills instantly!
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