<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>SQL on 正能量</title><link>https://www.znl.net/tags/sql/</link><description>Recent content in SQL on 正能量</description><generator>Hugo -- gohugo.io</generator><language>zh-CN</language><copyright>© 2026 正能量</copyright><lastBuildDate>Tue, 20 Oct 2026 12:27:42 +0800</lastBuildDate><atom:link href="https://www.znl.net/tags/sql/index.xml" rel="self" type="application/rss+xml"/><item><title>PostgreSQL 并行查询：为什么加工作进程不一定更快</title><link>https://www.znl.net/posts/postgres-parallel-query/</link><pubDate>Mon, 08 Jul 2024 00:00:00 +0800</pubDate><guid>https://www.znl.net/posts/postgres-parallel-query/</guid><description>先辨认查询中的并行节点，再核对进程与内存上限，结合业务并发判断单条查询加速是否值得。</description><media:content xmlns:media="http://search.yahoo.com/mrss/" url="https://www.znl.net/posts/postgres-parallel-query/featured.png"/></item></channel></rss>