What is a subquery in SQL, and how is it used?

What is a subquery in SQL, and how is it used?

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 subquery is a query nested inside another SQL query, often used in the WHERE clause to filter results based on the outcome of the subquery. Example: sql SELECT EmployeeID, FirstName, LastName FROM E...

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