" This buffer is used only when the join is of type ALL or index (in other words, when no possible keys can be used). / The larger the value of join_buffer_size, the fewer the scans of t3. "

yass のブックマーク 2013/10/21 16:35

<blockquote class="hatena-bookmark-comment"><a class="comment-info" href="https://b.hatena.ne.jp/entry/166158402/comment/yass" data-user-id="yass" data-entry-url="https://b.hatena.ne.jp/entry/s/dev.mysql.com/doc/internals/en/join-buffer-size.html" data-original-href="https://dev.mysql.com/doc/internals/en/join-buffer-size.html" data-entry-favicon="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fdev.mysql.com%2Fdoc%2Finternals%2Fen%2Fjoin-buffer-size.html" data-user-icon="/users/yass/profile.png">MySQL: Welcome</a><ul class="comment-tag" style="list-style: none; margin: 0px;"><li style="float: left">[<a href="https://b.hatena.ne.jp/q/mysql">mysql</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/join">join</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/memory">memory</a>]</li></ul><br><p style="clear: left">&quot; This buffer is used only when the join is of type ALL or index (in other words, when no possible keys can be used). / The larger the value of join_buffer_size, the fewer the scans of t3. &quot;</p><a class="datetime" href="https://b.hatena.ne.jp/yass/20131021#bookmark-166158402"><span class="datetime-body">2013/10/21 16:35</span></a></blockquote><script src="https://b.st-hatena.com/js/comment-widget.js" charset="utf-8" async></script>

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