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archive/+changes/index.html

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archive/en/changes-improvements-in-mariadb-11-5/index.html

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<dt>Modified</dt>
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<?xml version="1.0" encoding="utf-8"?>
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<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title>MariaDB Knowledge Base Comments for: Changes and Improvements in MariaDB 12.0</title><link>https://mariadb.com/kb/en/changes-improvements-in-mariadb-12-0/+comments/feed/</link><description></description><atom:link href="https://mariadb.com/kb/en/changes-improvements-in-mariadb-12-0/+comments/feed/" rel="self"></atom:link><language>en-us</language><lastBuildDate>Fri, 07 Mar 2025 01:03:23 +0000</lastBuildDate></channel></rss>
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<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title>MariaDB Knowledge Base Comments for: Changes and Improvements in MariaDB 12.0</title><link>https://mariadb.com/kb/en/changes-improvements-in-mariadb-12-0/+comments/feed/</link><description></description><atom:link href="https://mariadb.com/kb/en/changes-improvements-in-mariadb-12-0/+comments/feed/" rel="self"></atom:link><language>en-us</language><lastBuildDate>Sat, 08 Mar 2025 01:02:10 +0000</lastBuildDate></channel></rss>

archive/en/changes-improvements-in-mariadb-12-0/index.html

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<dt>Created</dt>
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<span class="datetime" title="2024-12-09 12:50">2 months, 3 weeks ago</span></dd>
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<span class="datetime" title="2024-12-09 12:50">2 months, 4 weeks ago</span></dd>
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<?xml version="1.0" encoding="utf-8"?>
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<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title>MariaDB Knowledge Base Comments for: Full List of MariaDB Options, System and Status Variables</title><link>https://mariadb.com/kb/en/full-list-of-mariadb-options-system-and-status-variables/+comments/feed/</link><description></description><atom:link href="https://mariadb.com/kb/en/full-list-of-mariadb-options-system-and-status-variables/+comments/feed/" rel="self"></atom:link><language>en-us</language><lastBuildDate>Fri, 07 Mar 2025 01:03:30 +0000</lastBuildDate><item><title>Re: Full List of MariaDB Options, System and Status Variables</title><link>https://mariadb.com/kb/en/full-list-of-mariadb-options-system-and-status-variables/+comments/6379</link><description>&lt;p&gt;Thanks, fixed.&lt;/p&gt;
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<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title>MariaDB Knowledge Base Comments for: Full List of MariaDB Options, System and Status Variables</title><link>https://mariadb.com/kb/en/full-list-of-mariadb-options-system-and-status-variables/+comments/feed/</link><description></description><atom:link href="https://mariadb.com/kb/en/full-list-of-mariadb-options-system-and-status-variables/+comments/feed/" rel="self"></atom:link><language>en-us</language><lastBuildDate>Sat, 08 Mar 2025 01:02:20 +0000</lastBuildDate><item><title>Re: Full List of MariaDB Options, System and Status Variables</title><link>https://mariadb.com/kb/en/full-list-of-mariadb-options-system-and-status-variables/+comments/6379</link><description>&lt;p&gt;Thanks, fixed.&lt;/p&gt;
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</description><dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ian Gilfillan</dc:creator><guid>https://mariadb.com/kb/en/full-list-of-mariadb-options-system-and-status-variables/+comments/6379</guid></item><item><title>Re: Full List of MariaDB Options, System and Status Variables</title><link>https://mariadb.com/kb/en/full-list-of-mariadb-options-system-and-status-variables/+comments/6375</link><description>&lt;p&gt;Maybe there is a type in variable name for "innodb-stats-on-metadata" should be "innodb_stats_on_metadata" in this page. Starting parameter is correct with middle dash&lt;/p&gt;
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</description><dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Joan G. Villaraco</dc:creator><guid>https://mariadb.com/kb/en/full-list-of-mariadb-options-system-and-status-variables/+comments/6375</guid></item></channel></rss>

archive/en/full-list-of-mariadb-options-system-and-status-variables/index.html

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Redirect https://mariadb.com/kb/en/improvements-to-order-by

archive/en/improvements-to-order-by/index.html

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<li><a href="/kb/en/">Home</a></li>
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<li><a href="/kb/en/+questions/">Open Questions</a></li>
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<li><a href="/kb/en/documentation/">MariaDB Server</a></li>
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<div class="mariadb_from_10_1 mariadb from_10_1 product"><h5 class="product_title">MariaDB starting with <a href="/kb/en/what-is-mariadb-101/">10.1</a></h5><p><a href="/kb/en/what-is-mariadb-101/">MariaDB 10.1</a> includes several improvements to the <a href="/kb/en/order-by/">ORDER BY</a> optimizer. </p>
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<h2 class="anchored_heading" id="available-tuning-for-order-by-with-small-limit">Available tuning for ORDER BY with small LIMIT</h2>
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<ul start="1"><li>In 2024, fix for <a href="https://jira.mariadb.org/browse/MDEV-34720">MDEV-34720</a> has added <a href="/kb/en/optimizer_join_limit_pref_ratio-optimization/">optimizer_join_limit_pref_ratio optimization</a> into MariaDB starting from 10.6. It allows one to enable extra optimization for ORDER BY with small LIMIT.
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</li></ul>
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<h2 class="anchored_heading" id="older-optimizations">Older optimizations</h2>
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<div class="mariadb_from_10_1 mariadb from_10_1 product"><h5 class="product_title">MariaDB starting with <a href="/kb/en/what-is-mariadb-101/">10.1</a></h5><p><a href="/kb/en/what-is-mariadb-101/">MariaDB 10.1</a> includes several improvements to the <a href="/kb/en/order-by/">ORDER BY</a> optimizer. </p>
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</div><p>The fixes were made as a response to complaints by MariaDB customers, so they fix real-world optimization problems. The fixes are a bit hard to describe (as the <code>ORDER BY</code> optimizer is complicated), but here's a short description: </p>
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<p>The <a href="/kb/en/order-by/">ORDER BY</a> optimizer in <a href="/kb/en/what-is-mariadb-101/">MariaDB 10.1</a>:</p>
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<ul start="1"><li>Doesn’t make stupid choices when several multi-part keys and potential range accesses are present (<a href="https://jira.mariadb.org/browse/MDEV-6402">MDEV-6402</a>).

archive/en/innodb-asynchronous-io/index.html

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<?xml version="1.0" encoding="utf-8"?>
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<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title>MariaDB Knowledge Base Comments for: InnoDB Server Status Variables</title><link>https://mariadb.com/kb/en/innodb-status-variables/+comments/feed/</link><description></description><atom:link href="https://mariadb.com/kb/en/innodb-status-variables/+comments/feed/" rel="self"></atom:link><language>en-us</language><lastBuildDate>Fri, 07 Mar 2025 01:02:45 +0000</lastBuildDate><item><title>Re: XtraDB/InnoDB Server Status Variables</title><link>https://mariadb.com/kb/en/innodb-status-variables/+comments/2941</link><description>&lt;p&gt;The variables listed on this page have descriptions - what details are you looking for?&lt;/p&gt;
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<rss xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title>MariaDB Knowledge Base Comments for: InnoDB Server Status Variables</title><link>https://mariadb.com/kb/en/innodb-status-variables/+comments/feed/</link><description></description><atom:link href="https://mariadb.com/kb/en/innodb-status-variables/+comments/feed/" rel="self"></atom:link><language>en-us</language><lastBuildDate>Sat, 08 Mar 2025 01:02:32 +0000</lastBuildDate><item><title>Re: XtraDB/InnoDB Server Status Variables</title><link>https://mariadb.com/kb/en/innodb-status-variables/+comments/2941</link><description>&lt;p&gt;The variables listed on this page have descriptions - what details are you looking for?&lt;/p&gt;
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</description><dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Ian Gilfillan</dc:creator><guid>https://mariadb.com/kb/en/innodb-status-variables/+comments/2941</guid></item><item><title>Re: XtraDB/InnoDB Server Status Variables</title><link>https://mariadb.com/kb/en/innodb-status-variables/+comments/2940</link><description>&lt;p&gt;It would be nice having a at least a quick description of the meaning of those values. totaly helpfull&lt;/p&gt;
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</description><dc:creator xmlns:dc="http://purl.org/dc/elements/1.1/">Sylvain Arbaudie</dc:creator><guid>https://mariadb.com/kb/en/innodb-status-variables/+comments/2940</guid></item></channel></rss>

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