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    <description>Latest 20 articles of Performance Tuning</description>
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      <title>【博客文章2023】 In-Memory Column Store系列3</title>
      <link>https://www.botangdb.com/portal.php?mod=view&amp;aid=900091</link>
      <description><![CDATA[In-Memory Column Store系列3。]]></description>
      <category>Performance Tuning</category>
      <author>Bo Tang</author>
      <pubDate>Sat, 18 Mar 2023 01:36:00 +0000</pubDate>
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      <title>【博客文章2022】 In-Memory Column Store系列2</title>
      <link>https://www.botangdb.com/portal.php?mod=view&amp;aid=900076</link>
      <description><![CDATA[In-Memory Column Store系列2]]></description>
      <category>Performance Tuning</category>
      <author>Bo Tang</author>
      <pubDate>Sat, 02 Apr 2022 08:03:00 +0000</pubDate>
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      <title>【博客文章2022】 In-Memory Column Store系列1</title>
      <link>https://www.botangdb.com/portal.php?mod=view&amp;aid=900074</link>
      <description><![CDATA[In-Memory Column Store系列1，介绍了：In-Memory Column Store的工作原理、In-Memory Column Store的使用场景、In-Memory Column Store的配置和 In Memory DDL子句。]]></description>
      <category>Performance Tuning</category>
      <author>Bo Tang</author>
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      <pubDate>Thu, 24 Mar 2022 03:20:00 +0000</pubDate>
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      <title>【博客文章2021】Oracle分区技术和复合分区技术的例子和注意事项</title>
      <link>https://www.botangdb.com/portal.php?mod=view&amp;aid=900079</link>
      <description><![CDATA[Oracle分区技术和复合分区技术的例子和注意事项Author: Bo TangSYSTEM分区：CREATE TABLE hr.systab (c1 integer, c2 integer)PARTITION BY SYSTEM(PARTITION p1 TABLESPACE users,PARTITION p2 TABLESPACE example,PARTITION p3 TABLESPACE users,PARTITION p4 TABLESP ...]]></description>
      <category>Performance Tuning</category>
      <author>Bo Tang</author>
      <pubDate>Thu, 28 Oct 2021 03:25:00 +0000</pubDate>
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      <title>【博客文章2013】说说IOT和mapping table的那些事---几句话道出真相</title>
      <link>https://www.botangdb.com/portal.php?mod=view&amp;aid=900015</link>
      <description><![CDATA[bitmap索引条目中保存的rowid要用physicalrowid,而IOT是无法提供稳定的physicalrowid的，因此 bitmapindex就只能记录mappingtable的physicalrowid。通过bitmap索引来访问的执行计划大概就是首先根据 bitmapindex中记录的mappingtablephysicalrowid访问mappingtable,然后 ...]]></description>
      <category>Performance Tuning</category>
      <author>Bo Tang</author>
      <pubDate>Fri, 13 May 2016 06:45:00 +0000</pubDate>
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