website: add search data. #105 b034d7970d

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jaywcjlove
2022-11-17 08:00:19 +00:00
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<p>本备忘单旨在快速理解 <a href="https://mysql.com">MySQL</a> 所涉及的主要概念提供了最常用的SQL语句供您参考。</p>
</div></header><div class="menu-tocs"><div class="menu-btn"><svg aria-hidden="true" fill="currentColor" height="1em" width="1em" viewBox="0 0 16 16" version="1.1" data-view-component="true">
<path fill-rule="evenodd" d="M2 4a1 1 0 100-2 1 1 0 000 2zm3.75-1.5a.75.75 0 000 1.5h8.5a.75.75 0 000-1.5h-8.5zm0 5a.75.75 0 000 1.5h8.5a.75.75 0 000-1.5h-8.5zm0 5a.75.75 0 000 1.5h8.5a.75.75 0 000-1.5h-8.5zM3 8a1 1 0 11-2 0 1 1 0 012 0zm-1 6a1 1 0 100-2 1 1 0 000 2z"></path>
</svg></div><div class="menu-modal"><a aria-hidden="true" class="leve2 tocs-link" href="#入门">入门</a><a aria-hidden="true" class="leve3 tocs-link" href="#介绍">介绍</a><a aria-hidden="true" class="leve3 tocs-link" href="#登录mysql">登录MySQL</a><a aria-hidden="true" class="leve3 tocs-link" href="#常用的">常用的</a><a aria-hidden="true" class="leve4 tocs-link" href="#数据库-database">数据库 Database</a><a aria-hidden="true" class="leve4 tocs-link" href="#表-table">表 Table</a><a aria-hidden="true" class="leve4 tocs-link" href="#proccess">Proccess</a><a aria-hidden="true" class="leve3 tocs-link" href="#查看-mysql-信息">查看 MySQL 信息</a><a aria-hidden="true" class="leve3 tocs-link" href="#退出mysql会话">退出MySQL会话</a><a aria-hidden="true" class="leve3 tocs-link" href="#备份">备份</a><a aria-hidden="true" class="leve2 tocs-link" href="#mysql-示例">MySQL 示例</a><a aria-hidden="true" class="leve3 tocs-link" href="#管理表格">管理表格</a><a aria-hidden="true" class="leve3 tocs-link" href="#从表中查询数据">从表中查询数据</a><a aria-hidden="true" class="leve3 tocs-link" href="#从多个表查询">从多个表查询</a><a aria-hidden="true" class="leve3 tocs-link" href="#使用-sql-约束">使用 SQL 约束</a><a aria-hidden="true" class="leve3 tocs-link" href="#修改数据">修改数据</a><a aria-hidden="true" class="leve3 tocs-link" href="#管理视图">管理视图</a><a aria-hidden="true" class="leve3 tocs-link" href="#管理触发器">管理触发器</a><a aria-hidden="true" class="leve4 tocs-link" href="#when">WHEN</a><a aria-hidden="true" class="leve4 tocs-link" href="#event">EVENT</a><a aria-hidden="true" class="leve4 tocs-link" href="#trigger_type">TRIGGER_TYPE</a><a aria-hidden="true" class="leve3 tocs-link" href="#管理索引">管理索引</a><a aria-hidden="true" class="leve2 tocs-link" href="#mysql-数据类型">MySQL 数据类型</a><a aria-hidden="true" class="leve3 tocs-link" href="#strings">Strings</a><a aria-hidden="true" class="leve3 tocs-link" href="#date--time">Date &#x26; time</a><a aria-hidden="true" class="leve3 tocs-link" href="#numeric">Numeric</a><a aria-hidden="true" class="leve2 tocs-link" href="#另见">另见</a></div></div><div class="h1wrap-body"><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="入门"><a aria-hidden="true" tabindex="-1" href="#入门"><span class="icon icon-link"></span></a>入门</h2><div class="wrap-body">
</svg></div><div class="menu-modal"><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#入门">入门</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#介绍">介绍</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#登录mysql">登录MySQL</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#常用的">常用的</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#数据库-database">数据库 Database</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#表-table">表 Table</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#proccess">Proccess</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#查看-mysql-信息">查看 MySQL 信息</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#退出mysql会话">退出MySQL会话</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#备份">备份</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#mysql-示例">MySQL 示例</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#管理表格">管理表格</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#从表中查询数据">从表中查询数据</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#从多个表查询">从多个表查询</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#使用-sql-约束">使用 SQL 约束</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#修改数据">修改数据</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#管理视图">管理视图</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#管理触发器">管理触发器</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#when">WHEN</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#event">EVENT</a><a aria-hidden="true" class="leve4 tocs-link" data-num="4" href="#trigger_type">TRIGGER_TYPE</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#管理索引">管理索引</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#mysql-数据类型">MySQL 数据类型</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#strings">Strings</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#date--time">Date &#x26; time</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#numeric">Numeric</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#另见">另见</a></div></div><div class="h1wrap-body"><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="入门"><a aria-hidden="true" tabindex="-1" href="#入门"><span class="icon icon-link"></span></a>入门</h2><div class="wrap-body">
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist row-span-3"><div class="wrap-header h3wrap"><h3 id="介绍"><a aria-hidden="true" tabindex="-1" href="#介绍"><span class="icon icon-link"></span></a>介绍</h3><div class="wrap-body">
<!--rehype:wrap-class=row-span-3-->
<p>MySQL 为关系型数据库(Relational Database Management System),一个关系型数据库由一个或数个表格组成,如下所示的一个表格</p>