What are aggregate functions in SQL?

What are aggregate functions in SQL?

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, hcl, company-specific

目标公司: HCL Technologies

参考答案摘要

A function is a unit of code that is used for the purpose of reusability of a part of a program. An SQL aggregate function calculates on a set of values and returns a single value. The function should...

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