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	<title>block prefetch &#8211; 妮妮爸爸的技术博客</title>
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	<link>http://www.minniebaby.tech</link>
	<description>Phone:18685078367 提供专业Oracle/MySQL/PostgreSQL数据恢复、性能优化、迁移升级、紧急救援等服务</description>
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		<title>案例：index range scan真的不会多块读吗？</title>
		<link>http://www.minniebaby.tech/2021/11/11/%e6%a1%88%e4%be%8b%ef%bc%9aindex-range-scan%e7%9c%9f%e7%9a%84%e4%b8%8d%e4%bc%9a%e5%a4%9a%e5%9d%97%e8%af%bb%e5%90%97%ef%bc%9f/</link>
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		<dc:creator><![CDATA[lixiangyu]]></dc:creator>
		<pubDate>Thu, 11 Nov 2021 12:41:05 +0000</pubDate>
				<category><![CDATA[Oracle]]></category>
		<category><![CDATA[Oralce performance]]></category>
		<category><![CDATA[block prefetch]]></category>
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					<description><![CDATA[此次案例来自西安某客户的一次sql优化，对于优化本身并不复杂，但是发现了一个比较 &#8230; <a href="http://www.minniebaby.tech/2021/11/11/%e6%a1%88%e4%be%8b%ef%bc%9aindex-range-scan%e7%9c%9f%e7%9a%84%e4%b8%8d%e4%bc%9a%e5%a4%9a%e5%9d%97%e8%af%bb%e5%90%97%ef%bc%9f/">继续阅读 <span class="meta-nav">&#8594;</span></a>]]></description>
		
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