What is the difference between **NULL**, **0**, and **Empty String (“”)?

What is the difference between **NULL**, **0**, and **Empty String (“”)?

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: intellipaat, sql, topic-specific, sql, database

参考答案摘要

NULL means no value, 0 is a numeric value, and an empty string represents a value with no characters. | Feature | NULL | 0 | Empty String (“”) | | --- | --- | --- | --- | | Meaning | No value | Numeri...

本题提供 STAR 原则详细解答和技术解析，登录匠人学院学习中心即可查看完整答案。