Write a query to find and remove duplicate rows from a table

Write a query to find and remove duplicate rows from a table

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: hard

标签: intellipaat, sql, topic-specific, sql, database

参考答案摘要

Duplicate rows can be identified using ROW\_NUMBER() and removed by keeping only the first occurrence. DELETE FROM employees WHERE id NOT IN ( SELECT MIN(id) FROM employees GROUP BY name, salary ); co...

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