<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Snow_95的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Snow_95</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Snow_95]]></copyright><item><title><![CDATA[mysql优化]]></title><link>https://blog.youkuaiyun.com/Snow_95/article/details/126487410</link><guid>https://blog.youkuaiyun.com/Snow_95/article/details/126487410</guid><author>Snow_95</author><pubDate>Tue, 23 Aug 2022 16:25:51 +0800</pubDate><description><![CDATA[1.有没有建索引，有没有用到索引，覆盖索引，索引有没有建对。：能用 char 不用 varchar。2.limit 语句的优化。3.join 的优化，]]></description><category></category></item></channel></rss>