81. Delete Duplicate Rows in SQL Using CTE | Tamil | Important SQL Interview Question Explained

📝 Description (in English – but suited for Tamil-spoken tech content) In this Tamil tutorial, you’ll learn how to delete duplicate rows in a SQL table using the CTE (Common Table Expression) method. We’ll cover step-by-step how to identify duplicate records using the ROW_NUMBER() function and how to safely remove them from your database. 🧠 Topics Covered: What is a CTE in SQL How to find duplicate rows using ROW_NUMBER() Delete duplicates without losing unique data Works in SQL Server, PostgreSQL, and MySQL 🎯 Perfect for: Students, Data Analysts, and SQL Developers who want to write clean, professional queries. 📚 Language: Tamil 💡 Level: Beginner to Intermediate 🔖 Hashtags #SQL #CTE #TamilTutorial #SQLInTamil #DataAnalyst #LearnSQL #SQLServer #MySQL #PostgreSQL #SQLBasics #DatabaseTutorial #SQLQuery #DataCleaning #RemoveDuplicates #TamilTech