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		<title>How to Recover the MySQL 8.0 root Password on Ubuntu</title>
		<link>https://www.webdevstudy.com/2025/12/09/how-to-recover-the-mysql-8-0-root-password-on-ubuntu/</link>
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		<pubDate>Tue, 09 Dec 2025 05:39:57 +0000</pubDate>
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		<title>How to Match Columns that Contain a Substring in SQL</title>
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		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Tue, 11 Jul 2023 03:21:21 +0000</pubDate>
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					<description><![CDATA[Suppose we’re querying a dataset from a SQL table. Let’s say we want to select all rows where a column contains the substring&#160;str. We can use a percent sign&#160;%&#160;with&#160;LIKE&#160;to check for substrings in any column. If you only want strings that end with the substring str, you can use %str. If you only want strings that start [&#8230;]]]></description>
		
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		<title>Mysql composite index optimization</title>
		<link>https://www.webdevstudy.com/2023/06/25/mysql-composite-index-optimization/</link>
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		<dc:creator><![CDATA[admin]]></dc:creator>
		<pubDate>Sun, 25 Jun 2023 02:18:18 +0000</pubDate>
				<category><![CDATA[MySql]]></category>
		<category><![CDATA[mysql]]></category>
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					<description><![CDATA[Mysql composite index optimization When using both where and order by in mysql statements, establish a combination index and pay attention to the order of the fields as SELECT * FROM links WHERE ( status=&#8217;1&#8242; ) ORDER BY sort desc; Combined indexes (status, sort) need to be made for links .]]></description>
		
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