<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>FullText Search on NineKoo9's story</title><link>https://NineKoo9.github.io/ja/tags/fulltext-search/</link><description>Recent content in FullText Search on NineKoo9's story</description><generator>Hugo -- gohugo.io</generator><language>ja</language><copyright>© 2026 NineKoo9</copyright><lastBuildDate>Thu, 31 Oct 2024 00:00:00 +0000</lastBuildDate><atom:link href="https://NineKoo9.github.io/ja/tags/fulltext-search/index.xml" rel="self" type="application/rss+xml"/><item><title>[MySQL] Left JoinをSubqueryに変更してクエリ性能を30倍向上させる</title><link>https://NineKoo9.github.io/ja/posts/mysql-left-join-to-subquery-optimization/</link><pubDate>Thu, 31 Oct 2024 00:00:00 +0000</pubDate><guid>https://NineKoo9.github.io/ja/posts/mysql-left-join-to-subquery-optimization/</guid><description>MySQL全文検索APIの応答時間を6.85秒から84msへ、Left JoinをSubqueryに変更することで約30倍向上させた過程をまとめます。</description></item></channel></rss>