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Post #2346

@sqlspecialist

Data Analytics

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PostedSep 2409/24/2025, 04:30 PM
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πŸ“Š π—œπ—»π˜π—²π—Ώπ˜ƒπ—Άπ—²π˜„π—²π—Ώ: How do you find Duplicate Records in a table? πŸ™‹β€β™‚οΈ 𝗠𝗲: Use GROUP BY with HAVING to filter rows occurring more than once: SELECT column_name, COUNT(*) AS duplicate_count FROM your_table GROUP BY column_name HAVING COUNT(*) > 1; 🧠Logic Breakdown: - GROUP BY column_name groups identical values - HAVING COUNT(*) > 1 filters groups with duplicates βœ…Use Case: Data cleaning, identifying duplicate user emails, removing redundant records πŸ’‘Pro Tip: To see all columns of duplicate rows, join this result back to the original table on column_name. πŸ’¬Tap ❀️ for more!