Finding Duplicate Records in SQL | Most Asked Interview Question
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Finding Duplicate Records in SQL | Most Asked Interview Question
Finding duplicate records is one of the most asked SQL interview questions. In this video, I explain how to find duplicate data in SQL using: - GROUP BY and HAVING (summary duplicates) - Window Functions (row-level analysis) - CASE statement (business-friendly labeling) You’ll understand: What duplicates really mean in real projects Why GROUP ...
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