course
SQL Remove Duplicates: Comprehensive Methods and Best Practices
Explore the different methods for filtering out and permanently removing duplicate rows using SQL. Learn the practical applications of how to remove duplicates in SQL Server, MySQL, and PostgreSQL.
Oct 29, 2024 · 8 min read
Earn a Top SQL Certification
Prove your core SQL skills and advance your data career.
What causes duplicate rows in SQL databases?
Can I prevent duplicates based on multiple columns?
How does the DISTINCT keyword remove duplicate rows?
Which method can you use to permanently delete duplicate records from the database?
Can duplicates affect the performance of my database?
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