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<?xml version="1.0" encoding="utf-8"?>
<search>
<entry>
<title>常用MySQL数据库语法</title>
<link href="/2019/10/03/%E5%B8%B8%E7%94%A8MySQL%E6%95%B0%E6%8D%AE%E5%BA%93%E8%AF%AD%E6%B3%95/"/>
<url>/2019/10/03/%E5%B8%B8%E7%94%A8MySQL%E6%95%B0%E6%8D%AE%E5%BA%93%E8%AF%AD%E6%B3%95/</url>
<content type="html"><![CDATA[<p>连接数据库</p><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">mysql -u root -p</span><br></pre></td></tr></table></figure><p>编辑114sdhshd</p><p>显示所有数据库</p><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">SHOW</span> <span class="keyword">DATABASES</span>;</span><br></pre></td></tr></table></figure><p>显示数据库中所有表</p><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">SHOW</span> <span class="keyword">TABLES</span>;</span><br></pre></td></tr></table></figure><p>选择数据库</p><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">USE</span> 数据库名；</span><br></pre></td></tr></table></figure><p>获取表结构</p><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">desc <表名></span><br><span class="line">或者</span><br><span class="line"><span class="keyword">SHOW</span> <span class="keyword">COLUMNS</span> <span class="keyword">FROM</span> <表名>;</span><br></pre></td></tr></table></figure><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">CREATE DATABASE <数据库名></span><br><span class="line">DROP DATABASE <数据库名></span><br></pre></td></tr></table></figure><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"></span><br></pre></td></tr></table></figure><p>约束条件</p><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">ALTER</span> <span class="keyword">TABLE</span> <表名> <span class="keyword">DROP</span> <span class="keyword">FOREIGN</span> <span class="keyword">KEY</span> <外键约束名></span><br><span class="line"><span class="keyword">ALTER</span> <span class="keyword">TABLE</span> <表名> <span class="keyword">DROP</span> PRIMARY <span class="keyword">KEY</span></span><br><span class="line"><span class="keyword">ALTER</span> <span class="keyword">TABLE</span> <表名> <span class="keyword">DROP</span> {约束名|候选键字段名}</span><br></pre></td></tr></table></figure><p>外键的添加</p><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">FOREIGN KEY(添加的列) REFERENCES 关联的表(关联的列) ON <span class="keyword">DELETE</span> RESTRICET <span class="keyword">ON</span> <span class="keyword">UPDATE</span> RESTRICT</span><br><span class="line"><span class="keyword">FOREIGN</span> <span class="keyword">KEY</span>(pro_id) <span class="keyword">REFERENCES</span> pro(<span class="keyword">id</span>) <span class="keyword">ON</span> <span class="keyword">DELETE</span> RESTRICET <span class="keyword">ON</span> <span class="keyword">UPDATE</span> RESTRICT</span><br></pre></td></tr></table></figure><p>触发器<br>删除触发器</p><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">DROP</span> <span class="keyword">TRIGGER</span> [<span class="keyword">IF</span> EXIST]</span><br></pre></td></tr></table></figure><p>创建触发器</p><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">CREATE</span> <span class="keyword">TRIGGER</span> add_test <span class="keyword">AFTER</span> INSTER <span class="keyword">ON</span> <span class="keyword">test</span> <span class="keyword">FOR</span> <span class="keyword">EACH</span> <span class="keyword">row</span> <span class="keyword">set</span> @x=<span class="string">'OK'</span></span><br></pre></td></tr></table></figure>]]></content>
<categories>
<category> 数据库 </category>
<category> MySQL </category>
</categories>
</entry>
<entry>
<title>数据库的基本概念</title>
<link href="/2019/09/25/%E6%95%B0%E6%8D%AE%E5%BA%93%E7%9A%84%E5%9F%BA%E6%9C%AC%E6%A6%82%E5%BF%B5/"/>
<url>/2019/09/25/%E6%95%B0%E6%8D%AE%E5%BA%93%E7%9A%84%E5%9F%BA%E6%9C%AC%E6%A6%82%E5%BF%B5/</url>
<content type="html"><![CDATA[<p>数据：描述事物的符号记录。</p><p>数据库：数据库是长期存放在计算机的有组织、可共享的大量数据集合。储存的数据具有永久储存、有组织和可共享三个基本特点。</p><h2 id="数据库管理系统"><a href="#数据库管理系统" class="headerlink" title="数据库管理系统"></a>数据库管理系统</h2><p>位于用户与操作系统之间的数据管理软件</p><h3 id="主要功能"><a href="#主要功能" class="headerlink" title="主要功能"></a>主要功能</h3><h4 id="1-数据定义功能"><a href="#1-数据定义功能" class="headerlink" title="1. 数据定义功能"></a>1. 数据定义功能</h4><h4 id="2-数据操纵功能"><a href="#2-数据操纵功能" class="headerlink" title="2. 数据操纵功能"></a>2. 数据操纵功能</h4><p>提供数据操纵语言（DML）操纵数据实现对数据库的基本操作</p><p>例如：查询、插入、删除、修改</p><h4 id="3-数据库的运行管理"><a href="#3-数据库的运行管理" class="headerlink" title="3. 数据库的运行管理"></a>3. 数据库的运行管理</h4><p>保证数据的安全性、完整性、多用户对数据的并发使用以及发生故障后的系统恢复</p><h4 id="4-数据库的建立和维护功能"><a href="#4-数据库的建立和维护功能" class="headerlink" title="4. 数据库的建立和维护功能"></a>4. 数据库的建立和维护功能</h4><h4 id="5-数据组织、存储和管理功能"><a href="#5-数据组织、存储和管理功能" class="headerlink" title="5. 数据组织、存储和管理功能"></a>5. 数据组织、存储和管理功能</h4><h4 id="6-其它功能"><a href="#6-其它功能" class="headerlink" title="6. 其它功能"></a>6. 其它功能</h4><h2 id="数据库系统"><a href="#数据库系统" class="headerlink" title="数据库系统"></a>数据库系统</h2><p>数据库系统是指在计算机中引入数据库技术之后的系统<br>通常包括：数据库、数据库管理系统及其相关实用工具、应用程序、数据库管理人员和用户，包括数据库管理人员</p>]]></content>
<categories>
<category> 数据库 </category>
</categories>
<tags>
<tag> 数据库系统原理 </tag>
</tags>
</entry>
<entry>
<title>Hexo 使用自己的域名绑定</title>
<link href="/2019/09/24/Hexo-%E4%BD%BF%E7%94%A8%E8%87%AA%E5%B7%B1%E7%9A%84%E5%9F%9F%E5%90%8D%E7%BB%91%E5%AE%9A/"/>
<url>/2019/09/24/Hexo-%E4%BD%BF%E7%94%A8%E8%87%AA%E5%B7%B1%E7%9A%84%E5%9F%9F%E5%90%8D%E7%BB%91%E5%AE%9A/</url>
<content type="html"><![CDATA[<h1 id="准备阶段"><a href="#准备阶段" class="headerlink" title="准备阶段"></a>准备阶段</h1><h2 id="域名准备"><a href="#域名准备" class="headerlink" title="域名准备"></a>域名准备</h2><p>首先你需要准备一个喜欢的域名，然后注册域名，至于怎么注册这里就不啰嗦了，百度一大把。</p><h2 id="Hexo-博客准备"><a href="#Hexo-博客准备" class="headerlink" title="Hexo 博客准备"></a>Hexo 博客准备</h2><p>你需要配置好你的 Hexo 博客，可以看我的教程，也可以去网上找教程，这里就不复述了</p><h1 id="开始阶段"><a href="#开始阶段" class="headerlink" title="开始阶段"></a>开始阶段</h1><h2 id="将域名绑定到你的-Github-Pages-上"><a href="#将域名绑定到你的-Github-Pages-上" class="headerlink" title="将域名绑定到你的 Github Pages 上"></a>将域名绑定到你的 Github Pages 上</h2><p>去你注册域名的域名注册商去解析你要绑定的域名。<br>比如我要绑定 <a href="https://sanyuedev.github.io" target="_blank" rel="noopener">sanyuedev.github.io</a>。<br><img src="https://raw.githubusercontent.com/sanyuedev/Picture_Bed_With_PicGO/master/20190924234512.png" alt="这里以阿里云域名解析为例子"><br>这里记录类型我们选择 <code>CNAME</code>，主机记录选择 <code>blog</code>,其他的默认就好了<br>点击确定就解析好了。</p><h2 id="Hexo-设置"><a href="#Hexo-设置" class="headerlink" title="Hexo 设置"></a>Hexo 设置</h2><p>在 Hexo 的 <code>source</code> 文件夹下面新建一个文件名叫 <code>CNAME</code> 的文件，这个文件不能有后缀名。<br>这里我使用的是Vim创建。</p><figure class="highlight vim"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">vim</span> CNAME</span><br></pre></td></tr></table></figure><p>文件创建成功后我们按 <code>i</code> 进入 Vim 的插入模式，输入刚才设置的解析记录</p><figure class="highlight vim"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">blog.sanyuedev.top</span><br></pre></td></tr></table></figure><p>按 <code>ESC</code> 后再输入 <code>:q</code> 回车即可。</p><h1 id="部署阶段"><a href="#部署阶段" class="headerlink" title="部署阶段"></a>部署阶段</h1><p>接下来按流程部署博客即可。</p><figure class="highlight zsh"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">hexo clean</span><br><span class="line">hexo g</span><br><span class="line">hexo d</span><br></pre></td></tr></table></figure><p>我们现在输入我们设置的域名即可进入啦～</p><p>文章写的不多，写的不好多多见谅哈～</p>]]></content>
<categories>
<category> Hexo </category>
</categories>
</entry>
<entry>
<title>测试文章</title>
<link href="/2019/09/24/%E6%B5%8B%E8%AF%95%E6%96%87%E7%AB%A0/"/>
<url>/2019/09/24/%E6%B5%8B%E8%AF%95%E6%96%87%E7%AB%A0/</url>
<content type="html"><![CDATA[<h1 id="测试文章"><a href="#测试文章" class="headerlink" title="测试文章"></a>测试文章</h1><h2 id="这是标题"><a href="#这是标题" class="headerlink" title="这是标题"></a>这是标题</h2><p>这是内容</p><p>这是图片<br><img src="https://raw.githubusercontent.com/sanyuedev/Picture_Bed_With_PicGO/master/20190924221235.png" alt></p><h3 id="这是标题！"><a href="#这是标题！" class="headerlink" title="这是标题！"></a>这是标题！</h3>]]></content>
</entry>
<entry>
<title>从 0 配置一个 Hexo 博客站点</title>
<link href="/2019/09/24/%E4%BB%8E%200%20%E9%85%8D%E7%BD%AE%E4%B8%80%E4%B8%AA%20Hexo%20%E5%8D%9A%E5%AE%A2%E7%AB%99%E7%82%B9/"/>
<url>/2019/09/24/%E4%BB%8E%200%20%E9%85%8D%E7%BD%AE%E4%B8%80%E4%B8%AA%20Hexo%20%E5%8D%9A%E5%AE%A2%E7%AB%99%E7%82%B9/</url>
<content type="html"><![CDATA[<h2 id="从0配置一个Hexo"><a href="#从0配置一个Hexo" class="headerlink" title="从0配置一个Hexo"></a>从0配置一个Hexo</h2><h3 id="用到的-git-相关命令"><a href="#用到的-git-相关命令" class="headerlink" title="用到的 git 相关命令"></a>用到的 git 相关命令</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">git checkout -f hexo #创建并切换到 hexo 分支，hexo 分支存放 Hexo 源文件</span><br><span class="line">git add . #增加变化的文件进 git</span><br><span class="line">git commit -m '描述' #提交所有更改，并注释</span><br><span class="line">git push origin hexo #提交分支 hexo 到远程仓库</span><br></pre></td></tr></table></figure><h3 id="travis-yml-配置代码"><a href="#travis-yml-配置代码" class="headerlink" title=".travis.yml 配置代码"></a>.travis.yml 配置代码</h3><figure class="highlight yml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">sudo:</span> <span class="literal">false</span></span><br><span class="line"><span class="attr">language:</span> <span class="string">node_js</span></span><br><span class="line"><span class="attr">node_js:</span></span><br><span class="line"><span class="bullet"> -</span> <span class="number">10</span> <span class="comment"># use nodejs v10 LTS</span></span><br><span class="line"><span class="attr">cache:</span> <span class="string">npm</span></span><br><span class="line"><span class="attr">branches:</span></span><br><span class="line"><span class="attr"> only:</span></span><br><span class="line"><span class="bullet"> -</span> <span class="string">hexo</span> <span class="comment"># build master branch only</span></span><br><span class="line"><span class="attr">script:</span></span><br><span class="line"><span class="bullet"> -</span> <span class="string">npm</span> <span class="string">install</span> <span class="string">hexo-generator-search</span> <span class="bullet">--save</span> <span class="comment"># 安装本地搜索插件</span></span><br><span class="line"><span class="bullet"> -</span> <span class="string">npm</span> <span class="string">audit</span> <span class="string">fix</span> <span class="comment"># 执行修复命令</span></span><br><span class="line"><span class="bullet"> -</span> <span class="string">hexo</span> <span class="string">generate</span> <span class="comment"># generate static files</span></span><br><span class="line"><span class="attr">deploy:</span></span><br><span class="line"><span class="attr"> provider:</span> <span class="string">pages</span></span><br><span class="line"><span class="attr"> skip-cleanup:</span> <span class="literal">true</span></span><br><span class="line"><span class="attr"> github-token:</span> <span class="string">$GH_TOKEN</span> <span class="comment">#这是一个变量，不要动它，这个变量代表着从 github 设置到的 token</span></span><br><span class="line"><span class="attr"> keep-history:</span> <span class="literal">true</span></span><br><span class="line"><span class="attr"> on:</span></span><br><span class="line"><span class="attr"> branch:</span> <span class="string">hexo</span></span><br><span class="line"><span class="attr"> local-dir:</span> <span class="string">public</span></span><br><span class="line"><span class="attr"> target_branch:</span> <span class="string">master</span></span><br></pre></td></tr></table></figure>]]></content>
<categories>
<category> Hexo </category>
</categories>
</entry>
<entry>
<title>test</title>
<link href="/2019/09/23/test/"/>
<url>/2019/09/23/test/</url>
<content type="html"><![CDATA[<h1 id="测试界面"><a href="#测试界面" class="headerlink" title="测试界面"></a>测试界面</h1>]]></content>
</entry>
<entry>
<title>Hello World</title>
<link href="/2019/09/21/hello-world/"/>
<url>/2019/09/21/hello-world/</url>
<content type="html"><![CDATA[<p>Welcome to <a href="https://hexo.io/" target="_blank" rel="noopener">Hexo</a>! This is your very first post. Check <a href="https://hexo.io/docs/" target="_blank" rel="noopener">documentation</a> for more info. If you get any problems when using Hexo, you can find the answer in <a href="https://hexo.io/docs/troubleshooting.html" target="_blank" rel="noopener">troubleshooting</a> or you can ask me on <a href="https://github.com/hexojs/hexo/issues" target="_blank" rel="noopener">GitHub</a>.</p><h2 id="Quick-Start"><a href="#Quick-Start" class="headerlink" title="Quick Start"></a>Quick Start</h2><h3 id="Create-a-new-post"><a href="#Create-a-new-post" class="headerlink" title="Create a new post"></a>Create a new post</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo new <span class="string">"My New Post"</span></span><br></pre></td></tr></table></figure><p>More info: <a href="https://hexo.io/docs/writing.html" target="_blank" rel="noopener">Writing</a></p><h3 id="Run-server"><a href="#Run-server" class="headerlink" title="Run server"></a>Run server</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo server</span><br></pre></td></tr></table></figure><p>More info: <a href="https://hexo.io/docs/server.html" target="_blank" rel="noopener">Server</a></p><h3 id="Generate-static-files"><a href="#Generate-static-files" class="headerlink" title="Generate static files"></a>Generate static files</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo generate</span><br></pre></td></tr></table></figure><p>More info: <a href="https://hexo.io/docs/generating.html" target="_blank" rel="noopener">Generating</a></p><h3 id="Deploy-to-remote-sites"><a href="#Deploy-to-remote-sites" class="headerlink" title="Deploy to remote sites"></a>Deploy to remote sites</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo deploy</span><br></pre></td></tr></table></figure><p>More info: <a href="https://hexo.io/docs/deployment.html" target="_blank" rel="noopener">Deployment</a></p>]]></content>
<tags>
<tag> Hexo </tag>
</tags>
</entry>
</search>