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5 Books Engineers in the AI Era Should Read Now: Questions, Delegation, Fundamentals, Design, and DB
The task of writing code is increasingly being taken over by AI.So, what work remains for engineers? Deciding what to solve.
Django is software you can use to develop web applications quickly and efficiently. Most web applications have several common functions, like authentication, information retrieval from a database, and ...
From startups to enterprises, find AWS solutions scaled to your needs. Access tailored resources, pricing models, and support levels.
Explore the latest news and expert commentary on Vulnerabilities & Threats, brought to you by the editors of Dark Reading ...
Curated TypeSafe Jev / System One GitHub projects, open-source alternatives, and Jev news - daftAI2026/awesome-jev ...
Experience writing advanced SQL Technical Overview The Data Analyst will provide technical support for the Agile Development Team in their efforts to create Consumable Data Sets (CDS) using Azure ...
原创 最新推荐文章于 2026-10-02 16:46:45 发布 · 14 阅读 简介：这是一套面向高校计算机专业学生与Java初学者、以毕业设计为典型场景的实时评分系统完整项目源码，旨在替代传统手工打分与人工算 ...
也就是说 DISTINCT class_id, name 会把两个字段拼起来判断是否相同。 如果业务上想“查出去重后的班级数量”，要配合COUNT使用： COUNT (DISTINCT class_id) 。 这两个写法的区别在Excel透视表里也有对应，只是SQL写错了不像Excel那样好发现。
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