Effective Techniques to Eliminate Duplicate Records in SQL

Duplicate Data

Struggling with duplicates ruining your data integrity ? Master these 5 proven SQL techniques to clean your datasets like a pro !

Method 1: Using the `DISTINCT` Keyword

Method 2: The `GROUP BY` Clause

Method 3: Using Common Table Expressions (CTEs)

Method 4: Self-Join Technique

Method 5: Using the `ROW_NUMBER()` Window Function

💡 Pro Tip: Always test with a SELECT before deleting—your future self will thank you !