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snowcrush のブックマーク 2024/04/22 15:28

<blockquote class="hatena-bookmark-comment"><a class="comment-info" href="https://b.hatena.ne.jp/entry/4752350440064276832/comment/snowcrush" data-user-id="snowcrush" data-entry-url="https://b.hatena.ne.jp/entry/s/www.percona.com/blog/why-select-count-from-table-is-sometimes-very-slow-in-mysql-or-mariadb/" data-original-href="https://www.percona.com/blog/why-select-count-from-table-is-sometimes-very-slow-in-mysql-or-mariadb/" data-entry-favicon="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fwww.percona.com%2Fblog%2Fwhy-select-count-from-table-is-sometimes-very-slow-in-mysql-or-mariadb%2F" data-user-icon="/users/snowcrush/profile.png">Why SELECT COUNT(*) FROM TABLE Is Sometimes Very Slow in MySQL or MariaDB</a><br><p style="clear: left"></p><a class="datetime" href="https://b.hatena.ne.jp/snowcrush/20240422#bookmark-4752350440064276832"><span class="datetime-body">2024/04/22 15:28</span></a></blockquote><script src="https://b.st-hatena.com/js/comment-widget.js" charset="utf-8" async></script>

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Why SELECT COUNT(*) FROM TABLE Is Sometimes Very Slow in MySQL or MariaDB

www.percona.com2024/04/20

If you have enough experience with MySQL, it is very possible that you stumbled upon an unusually slow SELECT COUNT(*) FROM TABLE; query execution, at least occasionally. Recently, I had a chance t...

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