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What causes double counting in joins and how can it be prevented?

What causes double counting in joins and how can it be prevented?

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: interviewbit, sql, topic-specific, database

参考答案摘要

Double counting in joins usually occurs when tables are joined in a many-to-many relationship without proper aggregation or filtering. In such cases, rows from one table match multiple rows in another...

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What causes double counting in joins and how can it be prevented?

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