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MongoDB总结.htm
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id="post-info"><h1 class="post-title">MongoDB总结</h1><div id="post-meta"><div class="meta-firstline"><span class="post-meta-date"><i class="far fa-calendar-alt fa-fw post-meta-icon"></i><span class="post-meta-label">发表于</span><time class="post-meta-date-created" datetime="2020-07-29T13:50:16.000Z" title="发表于 2020-07-29 21:50:16">2020-07-29</time><span class="post-meta-separator">|</span><i class="fas fa-history fa-fw post-meta-icon"></i><span class="post-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2024-03-18T02:51:00.705Z" title="更新于 2024-03-18 10:51:00">2024-03-18</time></span><span class="post-meta-categories"><span class="post-meta-separator">|</span><i class="fas fa-inbox fa-fw post-meta-icon"></i><a class="post-meta-categories" href="categories/Linux/">Linux</a><i class="fas fa-angle-right post-meta-separator"></i><i class="fas fa-inbox fa-fw post-meta-icon"></i><a class="post-meta-categories" href="categories/Linux/MongoDB/">MongoDB</a><i class="fas 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id="busuanzi_value_page_pv"><i class="fa-solid fa-spinner fa-spin"></i></span></span></div></div></div></header><main class="layout" id="content-inner"><div id="post"><article class="post-content" id="article-container"><h1 id="MongoDB总结"><a href="#MongoDB总结" class="headerlink" title="MongoDB总结"></a>MongoDB总结</h1><h3 id="基本操作"><a href="#基本操作" class="headerlink" title="基本操作"></a>基本操作</h3><figure class="highlight stata"><table><tr><td class="code"><pre><span class="line">show databases;</span><br><span class="line"></span><br><span class="line"><span class="keyword">use</span> databasename;</span><br><span class="line"></span><br><span class="line"><span class="keyword">db</span>.dropDatabase();</span><br><span class="line"></span><br><span class="line">show collections;</span><br><span class="line"></span><br><span class="line"><span class="keyword">db</span>.createCollection('collectionname');</span><br><span class="line"></span><br><span class="line"><span class="keyword">db</span>.collectionname.<span class="keyword">drop</span>();</span><br></pre></td></tr></table></figure>
<h3 id="CURD"><a href="#CURD" class="headerlink" title="CURD"></a>CURD</h3><h4 id="增："><a href="#增：" class="headerlink" title="增："></a>增：</h4><p>集合存在则直接插入数据，不存在则隐式创建</p>
<p>collections为集合名</p>
<figure class="highlight stylus"><table><tr><td class="code"><pre><span class="line">db<span class="selector-class">.collection</span><span class="selector-class">.insert</span>({name:<span class="string">"jack"</span>}) <span class="comment">//单个JSON插入</span></span><br><span class="line">db<span class="selector-class">.collection</span><span class="selector-class">.insert</span>(<span class="selector-attr">[{name:<span class="string">"jack"</span>}.{name:<span class="string">"tom"</span>}]</span>) <span class="comment">//多个JSON插入</span></span><br><span class="line"><span class="function"><span class="title">for</span><span class="params">(var i =<span class="number">0</span>;i<<span class="number">5</span>;i++)</span></span>{</span><br><span class="line">db<span class="selector-class">.collection</span><span class="selector-class">.insert</span>({name:<span class="string">"jack"</span>})</span><br><span class="line">}<span class="comment">//快速插入多个数据</span></span><br></pre></td></tr></table></figure>
<h4 id="改"><a href="#改" class="headerlink" title="改:"></a>改:</h4><figure class="highlight xquery"><table><tr><td class="code"><pre><span class="line">db<span class="built_in">.collection</span>.<span class="keyword">update</span>(条件,新数据[,是否新增,是否修改多条数据])</span><br><span class="line">//是否新增<span class="built_in">：true</span>则为插入，默认flase为不插入</span><br><span class="line">//是否修改多条：匹配到的数据都修改，默<span class="built_in">认true</span>为是<span class="built_in">，false</span>为否</span><br><span class="line">db<span class="built_in">.collection</span>.<span class="keyword">update</span>(<span class="built_in">{name</span>:<span class="string">"tom"</span>},<span class="built_in">{name</span>:<span class="string">"saily"</span>}<span class="built_in">,false</span><span class="built_in">,true</span>)</span><br><span class="line">//这样子为将tom的那条数据替换成<span class="built_in">{name</span>:<span class="string">"saily"</span>}，默认为替换不是修改</span><br></pre></td></tr></table></figure>
<p><strong>下面运算符可在新数据里面使用</strong></p>
<table>
<thead>
<tr>
<th>运算符</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>$inc</td>
<td>递增</td>
</tr>
<tr>
<td>$rename</td>
<td>重命名列</td>
</tr>
<tr>
<td>$set</td>
<td>修改列值</td>
</tr>
<tr>
<td>$unset</td>
<td>删除列</td>
</tr>
</tbody></table>
<figure class="highlight xquery"><table><tr><td class="code"><pre><span class="line">//<span class="variable">$inc</span>使用，将age增加<span class="number">3</span></span><br><span class="line">db<span class="built_in">.collection</span>.<span class="keyword">update</span>(<span class="built_in">{name</span>:<span class="string">"tom"</span>},{<span class="variable">$inc:</span>{age: <span class="number">3</span>}})</span><br><span class="line">//<span class="variable">$inc</span>使用，将age减少<span class="number">3</span></span><br><span class="line">db<span class="built_in">.collection</span>.<span class="keyword">update</span>(<span class="built_in">{name</span>:<span class="string">"tom"</span>},{<span class="variable">$inc:</span>{age: -<span class="number">3</span>}})</span><br></pre></td></tr></table></figure>
<figure class="highlight xquery"><table><tr><td class="code"><pre><span class="line">//<span class="variable">$rename</span>使用，修<span class="built_in">改name</span>命名为uname</span><br><span class="line">db<span class="built_in">.collection</span>.<span class="keyword">update</span>(<span class="built_in">{name</span>:<span class="string">"tom"</span>},{<span class="variable">$rename:</span><span class="built_in">{name</span>:<span class="string">"uname"</span>}})</span><br></pre></td></tr></table></figure>
<figure class="highlight xquery"><table><tr><td class="code"><pre><span class="line">//<span class="variable">$set</span>使用，将修<span class="built_in">改name</span>为saily</span><br><span class="line">db<span class="built_in">.collection</span>.<span class="keyword">update</span>(<span class="built_in">{name</span>:<span class="string">"tom"</span>},{<span class="variable">$set:</span><span class="built_in">{name</span>:<span class="string">"saily"</span>}})</span><br></pre></td></tr></table></figure>
<figure class="highlight xquery"><table><tr><td class="code"><pre><span class="line">//<span class="variable">$unset</span>使用，将age字段删除<span class="built_in">,true</span>为删除</span><br><span class="line">db<span class="built_in">.collection</span>.<span class="keyword">update</span>(<span class="built_in">{name</span>:<span class="string">"tom"</span>},{<span class="variable">$unset:</span>{age:true}})</span><br></pre></td></tr></table></figure>
<figure class="highlight php"><table><tr><td class="code"><pre><span class="line"><span class="comment">//一次性写多个修改器</span></span><br><span class="line">db.collection.<span class="title function_ invoke__">update</span>({<span class="attr">name</span>:<span class="string">"tom"</span>},{</span><br><span class="line"><span class="variable">$inc</span>:{<span class="attr">age</span>: <span class="number">3</span>},</span><br><span class="line"><span class="variable">$set</span>:{<span class="attr">name</span>:<span class="string">"saily"</span>},</span><br><span class="line"><span class="variable">$rename</span>:{<span class="attr">name</span>:<span class="string">"uname"</span>},</span><br><span class="line"><span class="variable">$unset</span>:{<span class="attr">age</span>:<span class="literal">true</span>}</span><br><span class="line">})</span><br></pre></td></tr></table></figure>
<h4 id="查："><a href="#查：" class="headerlink" title="查："></a>查：</h4><figure class="highlight sqf"><table><tr><td class="code"><pre><span class="line">db.collection.<span class="built_in">find</span>(条件[,查询的列])</span><br><span class="line"><span class="comment">//格式化查询文档</span></span><br><span class="line">db.collection.<span class="built_in">find</span>().pretty();</span><br><span class="line"></span><br><span class="line"><span class="comment">//查询age为6的数据</span></span><br><span class="line">db.collection.<span class="built_in">find</span>({age:<span class="number">6</span>})</span><br><span class="line"></span><br><span class="line"><span class="comment">//查询age为6和sex为male的数据</span></span><br><span class="line">db.collection.<span class="built_in">find</span>({age:<span class="number">6</span>,sex:<span class="string">"male"</span>})</span><br><span class="line"></span><br><span class="line"><span class="comment">//查询的列 表示 结果筛选</span></span><br><span class="line"><span class="comment">//查询name为tom只显示age字段</span></span><br><span class="line">db.collection.<span class="built_in">find</span>({<span class="built_in">name</span>:<span class="string">"tom"</span>},{age:<span class="number">1</span>})</span><br><span class="line"></span><br><span class="line"><span class="comment">//查询name为tom除了age字段都显示</span></span><br><span class="line">db.collection.<span class="built_in">find</span>({<span class="built_in">name</span>:<span class="string">"tom"</span>},{age:<span class="number">0</span>})</span><br></pre></td></tr></table></figure>
<h4 id="删："><a href="#删：" class="headerlink" title="删："></a>删：</h4><figure class="highlight stylus"><table><tr><td class="code"><pre><span class="line">db<span class="selector-class">.collection</span><span class="selector-class">.remove</span>(条件<span class="selector-attr">[,是否删除一条]</span>)</span><br><span class="line"><span class="comment">//删除集合中所有文档</span></span><br><span class="line">db<span class="selector-class">.collection</span><span class="selector-class">.remove</span>({})</span><br><span class="line"><span class="comment">//是否删除一条，只删除一条为true，默认为否删除全部false</span></span><br></pre></td></tr></table></figure>
<h3 id="排序："><a href="#排序：" class="headerlink" title="排序："></a>排序：</h3><figure class="highlight stata"><table><tr><td class="code"><pre><span class="line"><span class="comment">//JSON数据里面根据键值排序，键为字段名，值为1则升序排序，值为-1则为降序排序</span></span><br><span class="line"><span class="keyword">db</span>.collectionname.find().<span class="keyword">sort</span>(JSON数据)</span><br><span class="line"></span><br><span class="line"><span class="comment">//年龄按降序排序</span></span><br><span class="line"><span class="keyword">db</span>.<span class="keyword">test</span>.find().<span class="keyword">sort</span>({age: -1});</span><br></pre></td></tr></table></figure>
<h3 id="Limit与Skip方法："><a href="#Limit与Skip方法：" class="headerlink" title="Limit与Skip方法："></a>Limit与Skip方法：</h3><figure class="highlight scss"><table><tr><td class="code"><pre><span class="line">db<span class="selector-class">.collectionname</span><span class="selector-class">.find</span>()<span class="selector-class">.sort</span>()<span class="selector-class">.skip</span>(数字)<span class="selector-class">.limit</span>(数字);</span><br><span class="line"><span class="comment">//skip跳过指定数量文档（可选），limit限制查询的数量</span></span><br><span class="line"></span><br><span class="line"><span class="comment">//降序查询2条数据</span></span><br><span class="line">db<span class="selector-class">.test</span><span class="selector-class">.find</span>()<span class="selector-class">.sort</span>({age:-<span class="number">1</span>})<span class="selector-class">.limit</span>(<span class="number">2</span>);</span><br><span class="line"></span><br><span class="line"><span class="comment">//降序查询2条而且跳过2条数据</span></span><br><span class="line">db<span class="selector-class">.test</span><span class="selector-class">.find</span>()<span class="selector-class">.sort</span>({age:-<span class="number">1</span>})<span class="selector-class">.skip</span>(<span class="number">2</span>)<span class="selector-class">.limit</span>(<span class="number">2</span>);</span><br></pre></td></tr></table></figure>
<h3 id="聚合查询："><a href="#聚合查询：" class="headerlink" title="聚合查询："></a>聚合查询：</h3><figure class="highlight dust"><table><tr><td class="code"><pre><span class="line"><span class="language-xml">db.collectionname.aggregate([</span></span><br><span class="line"><span class="language-xml"> </span><span class="template-variable">{管道:{表达式}</span><span class="language-xml">}</span></span><br><span class="line"><span class="language-xml"> ...</span></span><br><span class="line"><span class="language-xml">])</span></span><br></pre></td></tr></table></figure>
<p><strong>常用管道</strong></p>
<table>
<thead>
<tr>
<th>方法</th>
<th>作用</th>
</tr>
</thead>
<tbody><tr>
<td>$group</td>
<td>将集合中的文档分组，用于统计结果</td>
</tr>
<tr>
<td>$match</td>
<td>过滤数据，只要输出符合条件的文档</td>
</tr>
<tr>
<td>$sort</td>
<td>聚合数据进一步排序</td>
</tr>
<tr>
<td>$skip</td>
<td>跳过指定的文档数</td>
</tr>
<tr>
<td>$limit</td>
<td>限制集合数据返回文档数</td>
</tr>
<tr>
<td>…</td>
<td>…</td>
</tr>
</tbody></table>
<p><strong>常用表达式</strong></p>
<table>
<thead>
<tr>
<th align="left">方法</th>
<th>作用</th>
<th>用法</th>
</tr>
</thead>
<tbody><tr>
<td align="left">$sum</td>
<td>总和</td>
<td>$sum:1 同count表示统计</td>
</tr>
<tr>
<td align="left">$avg</td>
<td>平均</td>
<td></td>
</tr>
<tr>
<td align="left">$min</td>
<td>最小值</td>
<td></td>
</tr>
<tr>
<td align="left">$max</td>
<td>最大值</td>
<td></td>
</tr>
<tr>
<td align="left">…</td>
<td>…</td>
<td>…</td>
</tr>
</tbody></table>
<figure class="highlight awk"><table><tr><td class="code"><pre><span class="line"><span class="regexp">//</span>统计sex的总人数</span><br><span class="line">db.test.aggregate([</span><br><span class="line"> {</span><br><span class="line"> <span class="variable">$group</span>:{</span><br><span class="line"> _id: <span class="string">"$sex"</span>, <span class="regexp">//</span>按照sex列的顺序分组</span><br><span class="line"> rs: {<span class="variable">$sum</span>:<span class="number">1</span>} <span class="regexp">//</span>rs为统计总和的结果</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">])</span><br></pre></td></tr></table></figure>
<figure class="highlight php"><table><tr><td class="code"><pre><span class="line"><span class="comment">//统计所有人数的平均年龄</span></span><br><span class="line">db.test.<span class="title function_ invoke__">aggregate</span>([</span><br><span class="line"> {<span class="variable">$group</span>:{</span><br><span class="line"> <span class="attr">_id</span>: <span class="literal">null</span>,</span><br><span class="line"> <span class="attr">totalNum</span>: {<span class="variable">$sum</span>: <span class="number">1</span>},</span><br><span class="line"> <span class="attr">avgAge</span>: {<span class="variable">$avg</span>: <span class="string">"<span class="subst">$age</span>"</span>}</span><br><span class="line"> }}</span><br><span class="line">])</span><br></pre></td></tr></table></figure>
<figure class="highlight php"><table><tr><td class="code"><pre><span class="line"><span class="comment">//查询每个sex的人数，按人数升序排序</span></span><br><span class="line">db.test.<span class="title function_ invoke__">aggregate</span>([</span><br><span class="line"> {</span><br><span class="line"> <span class="variable">$group</span>:{</span><br><span class="line"> <span class="attr">_id</span>: <span class="string">"<span class="subst">$sex</span>"</span>,</span><br><span class="line"> <span class="attr">totalNum</span>: {<span class="variable">$sum</span>:<span class="number">1</span>},</span><br><span class="line"> }</span><br><span class="line"> },</span><br><span class="line"> {</span><br><span class="line"> <span class="variable">$sort</span>:{<span class="attr">totalNum</span>:<span class="number">1</span>}</span><br><span class="line"> }</span><br><span class="line">])</span><br></pre></td></tr></table></figure>
<h3 id="索引："><a href="#索引：" class="headerlink" title="索引："></a>索引：</h3><figure class="highlight stylus"><table><tr><td class="code"><pre><span class="line"><span class="comment">//创建索引语法</span></span><br><span class="line">db<span class="selector-class">.collectionname</span><span class="selector-class">.createIndex</span>(待创建索引的列<span class="selector-attr">[,额外选项]</span>)</span><br><span class="line"><span class="comment">//待创建索引的列： {键:1,...,键:-1} 1为按升序创建索引，-1位按降序创建索引</span></span><br><span class="line"><span class="comment">//额外选项：设置索引的名称或者唯一索引等 {name:indexname,unique:列名}</span></span><br><span class="line"></span><br><span class="line"><span class="comment">//删除索引语法</span></span><br><span class="line"></span><br><span class="line"><span class="comment">//全部删除</span></span><br><span class="line">db<span class="selector-class">.collectionname</span><span class="selector-class">.dropIndexes</span>()</span><br><span class="line"><span class="comment">//部分删除</span></span><br><span class="line">db<span class="selector-class">.collectionname</span><span class="selector-class">.dropIndex</span>(<span class="string">'索引名'</span>)</span><br><span class="line"></span><br><span class="line"><span class="comment">//查看索引语法</span></span><br><span class="line">db<span class="selector-class">.collectionname</span><span class="selector-class">.getIndexes</span>()</span><br></pre></td></tr></table></figure>
<figure class="highlight reasonml"><table><tr><td class="code"><pre><span class="line"><span class="comment">//创建多个索引</span></span><br><span class="line">db.collectionname.create<span class="constructor">Index({<span class="params">name</span>:1,<span class="params">age</span>:1})</span></span><br><span class="line"></span><br><span class="line"><span class="comment">//创建唯一索引</span></span><br><span class="line">db.collectionname.create<span class="constructor">Index({<span class="params">name</span>:1},{<span class="params">unique</span>:<span class="params">age</span>})</span></span><br></pre></td></tr></table></figure>
<h3 id="分析索引："><a href="#分析索引：" class="headerlink" title="分析索引："></a>分析索引：</h3><figure class="highlight awk"><table><tr><td class="code"><pre><span class="line">db.collectionname.find().explain(<span class="string">'executionStats'</span>);</span><br><span class="line"></span><br><span class="line"><span class="regexp">//</span>COLLSCAN 全表扫描</span><br><span class="line"><span class="regexp">//</span>IXSCAN 索引扫描</span><br><span class="line"><span class="regexp">//</span>FETCH 根据索引去检索指定的document</span><br></pre></td></tr></table></figure>
<p><img src="https://pic-1257960926.cos.ap-guangzhou.myqcloud.com/blog/IMG_0512-6029409.jpg" alt="IMG_0512"></p>
<figure class="highlight sqf"><table><tr><td class="code"><pre><span class="line"><span class="comment">//未添加索引寻找</span></span><br><span class="line">db.test.<span class="built_in">find</span>({<span class="built_in">name</span>:<span class="string">"tom"</span>}).explain(<span class="string">'executionStats'</span>);</span><br><span class="line"><span class="comment">//添加索引寻找</span></span><br><span class="line">db.test.<span class="built_in">find</span>({<span class="built_in">name</span>:<span class="string">"tom"</span>}).explain(<span class="string">'executionStats'</span>);</span><br></pre></td></tr></table></figure>
<h3 id="权限机制："><a href="#权限机制：" class="headerlink" title="权限机制："></a>权限机制：</h3><figure class="highlight php"><table><tr><td class="code"><pre><span class="line"><span class="keyword">use</span> <span class="title">admin</span>;</span><br><span class="line">db.<span class="title function_ invoke__">createUser</span>({</span><br><span class="line"> <span class="string">"user"</span>: <span class="string">"huangjiahui"</span>,</span><br><span class="line"> <span class="string">"pwd"</span>: <span class="string">"huangjiahui"</span>,</span><br><span class="line"> <span class="attr">roles</span>:[{</span><br><span class="line"> <span class="attr">role</span>: <span class="string">"readWrite"</span>,</span><br><span class="line"> <span class="attr">db</span>: <span class="string">"huangjiahui"</span></span><br><span class="line"> }]</span><br><span class="line">})；</span><br><span class="line"><span class="comment">//或者</span></span><br><span class="line">db.<span class="title function_ invoke__">createUser</span>({</span><br><span class="line"> <span class="string">"user"</span>: <span class="string">"账号"</span>,</span><br><span class="line"> <span class="string">"pwd"</span>: <span class="string">"密码"</span>,</span><br><span class="line"> <span class="attr">roles</span>:[{</span><br><span class="line"> <span class="attr">role</span>: <span class="string">"角色"</span>,</span><br><span class="line"> <span class="attr">db</span>: <span class="string">"所属数据库"</span></span><br><span class="line"> },{</span><br><span class="line"> <span class="attr">role</span>: <span class="string">"readWrite"</span>,</span><br><span class="line"> <span class="attr">db</span>: <span class="string">"zdnfcj"</span></span><br><span class="line"> },</span><br><span class="line"> ]</span><br><span class="line">})</span><br><span class="line"></span><br><span class="line"><span class="comment">//指定某个数据库创建用户，要到当下的数据库下创建用户</span></span><br><span class="line"><span class="comment">//admin下的system.users集合能看到所有用户</span></span><br></pre></td></tr></table></figure>
<blockquote>
<p>#角色种类</p>
<p>超级用户角色：root</p>
<p>数据库用户角色：read、readWrite</p>
<p>数据库管理角色：dbAdmin、userAdmin</p>
<p>集群管理角色：clusterAdmin、clusterManager、clusterMonitor、hostManager</p>
<p>备份恢复角色：backup、restore</p>
<p>所有数据库角色：readAnyDatabase、readWriteAnyDatabase、userAdminAnyDatabase、dbAdminAnyDatabase</p>
</blockquote>
<p><strong>通过root登录</strong></p>
<ul>
<li>mongo ip:port/database -u user -p pwd</li>
<li>先登录 mongo，选择admin数据库，db.auth(user,pwd)</li>
</ul>
<h3 id="备份还原"><a href="#备份还原" class="headerlink" title="备份还原:"></a>备份还原:</h3><p><strong>备份</strong></p>
<figure class="highlight diff"><table><tr><td class="code"><pre><span class="line">mongodump -h -port -u -p -d -o</span><br><span class="line"></span><br><span class="line">//语法说明</span><br><span class="line"><span class="deletion">-h host ip</span></span><br><span class="line"><span class="deletion">-port port</span></span><br><span class="line"><span class="deletion">-u user</span></span><br><span class="line"><span class="deletion">-p pwd</span></span><br><span class="line"><span class="deletion">-d database</span></span><br><span class="line"><span class="deletion">-o open ./xxx/ 备份路径文件夹</span></span><br></pre></td></tr></table></figure>
<p><strong>还原</strong></p>
<figure class="highlight css"><table><tr><td class="code"><pre><span class="line">mongorestore -h -port -u -<span class="selector-tag">p</span> -d <span class="attr">--drop</span> 备份数据目录</span><br><span class="line"></span><br><span class="line">-d 不写则还原全部数据</span><br><span class="line"><span class="attr">--drop</span> 先删除数据库再导入</span><br></pre></td></tr></table></figure>
</article><div class="post-copyright"><div class="post-copyright__author"><span class="post-copyright-meta">文章作者: </span><span class="post-copyright-info"><a href="https://www.scery.com">HaoDong Wu</a></span></div><div class="post-copyright__type"><span class="post-copyright-meta">文章链接: </span><span class="post-copyright-info"><a href="https://www.scery.com/MongoDB%E6%80%BB%E7%BB%93.htm">https://www.scery.com/MongoDB%E6%80%BB%E7%BB%93.htm</a></span></div><div class="post-copyright__notice"><span class="post-copyright-meta">版权声明: </span><span class="post-copyright-info">本博客所有文章除特别声明外，均采用 <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/" target="_blank">CC BY-NC-SA 4.0</a> 许可协议。转载请注明来自 <a href="https://www.scery.com" target="_blank">Anthony's Blog</a>！</span></div></div><div class="tag_share"><div class="post-meta__tag-list"><a class="post-meta__tags" href="tags/Linux/">Linux</a><a class="post-meta__tags" href="tags/Services/">Services</a><a class="post-meta__tags" 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href="#CURD"><span class="toc-number">1.0.2.</span> <span class="toc-text">CURD</span></a><ol class="toc-child"><li class="toc-item toc-level-4"><a class="toc-link" href="#%E5%A2%9E%EF%BC%9A"><span class="toc-number">1.0.2.1.</span> <span class="toc-text">增：</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E6%94%B9"><span class="toc-number">1.0.2.2.</span> <span class="toc-text">改:</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E6%9F%A5%EF%BC%9A"><span class="toc-number">1.0.2.3.</span> <span class="toc-text">查：</span></a></li><li class="toc-item toc-level-4"><a class="toc-link" href="#%E5%88%A0%EF%BC%9A"><span class="toc-number">1.0.2.4.</span> <span class="toc-text">删：</span></a></li></ol></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E6%8E%92%E5%BA%8F%EF%BC%9A"><span class="toc-number">1.0.3.</span> <span class="toc-text">排序：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#Limit%E4%B8%8ESkip%E6%96%B9%E6%B3%95%EF%BC%9A"><span class="toc-number">1.0.4.</span> <span class="toc-text">Limit与Skip方法：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E8%81%9A%E5%90%88%E6%9F%A5%E8%AF%A2%EF%BC%9A"><span class="toc-number">1.0.5.</span> <span class="toc-text">聚合查询：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E7%B4%A2%E5%BC%95%EF%BC%9A"><span class="toc-number">1.0.6.</span> <span class="toc-text">索引：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E5%88%86%E6%9E%90%E7%B4%A2%E5%BC%95%EF%BC%9A"><span class="toc-number">1.0.7.</span> <span class="toc-text">分析索引：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E6%9D%83%E9%99%90%E6%9C%BA%E5%88%B6%EF%BC%9A"><span class="toc-number">1.0.8.</span> <span class="toc-text">权限机制：</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#%E5%A4%87%E4%BB%BD%E8%BF%98%E5%8E%9F"><span class="toc-number">1.0.9.</span> <span class="toc-text">备份还原:</span></a></li></ol></li></ol></li></ol></div></div><div class="card-widget card-recent-post"><div class="item-headline"><i class="fas fa-history"></i><span>最新文章</span></div><div class="aside-list"><div class="aside-list-item no-cover"><div class="content"><a class="title" href="../XT20%E4%BD%BF%E7%94%A8%E6%96%B0%E6%9C%BA%E5%9E%8B%E7%9A%84%E9%A2%84%E8%AE%BE.htm" title="无题">无题</a><time datetime="2025-01-04T04:30:41.696Z" title="发表于 2025-01-04 12:30:41">2025-01-04</time></div></div><div class="aside-list-item no-cover"><div class="content"><a class="title" href="../%E7%BB%84%E4%BC%9A/20241223%E7%BB%84%E4%BC%9A.htm" title="20241223组会">20241223组会</a><time datetime="2024-12-23T06:56:00.000Z" title="发表于 2024-12-23 14:56:00">2024-12-23</time></div></div><div class="aside-list-item no-cover"><div class="content"><a class="title" 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