What are UNION, MINUS and INTERSECT commands?

What are UNION, MINUS and INTERSECT commands?

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, sql, topic-specific, database

参考答案摘要

The UNION operator combines and returns the result-set retrieved by two or more SELECT statements. The MINUS operator in SQL is used to remove duplicates from the result-set obtained by the second SEL...

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