How can you join a table to itself?

How can you join a table to itself?

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: easy

标签: interviewbit, sql-joins, topic-specific, sql, database

参考答案摘要

Another type of join in SQL is a SELF JOIN, which connects a table to itself. In order to perform a self-join, it is necessary to have at least one column (say X) that serves as the primary key as wel...

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