How do you write a self-join in SQL? Provide a data analyst use case.

How do you write a self-join in SQL? Provide a data analyst use case.

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: medium

标签: interviewbit, data-analyst, topic-specific, data-analysis, analytics

参考答案摘要

A self-join is when you join a table to itself. You use aliases to treat the same table as two different logical tables. One common example is an employee-manager hierarchy: SELECT e.name AS employee,...

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