目录一、Socket基础概念与工作流程（图解）1. Socket通信核心模型2. 核心流程分解二、服务端与客户端基础代码分步解析1. 服务端基础代码（单线程版）2. 客户端基础代码三、超时设置详解（解决卡死问题）1. 连接超时（
Every time you make use of a derived table, that query is going to be executed. When using a CTE, that result set is pulled back once and only once within a single query.
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