SQL DDM和DML


# 欢迎使用Markdown编辑器你好！ 这是你第一次使用 **Markdown编辑器** 所展示的欢迎页。如果你想学习如何使用Markdown编辑器, 可以仔细阅读这篇文章，了解一下Markdown的基本语法知识。## 新的改变我们对Markdown编辑器进行了一些功能拓展与语法支持，除了标准的Markdown编辑器功能，我们增加了如下几点新功能，帮助你用它写博客：1. **全新的界面设计** ，将会带来全新的写作体验；2. 在创作中心设置你喜爱的代码高亮样式，Markdown **将代码片显示选择的高亮样式** 进行展示；3. 增加了 **图片拖拽** 功能，你可以将本地的图片直接拖拽到编辑区域直接展示；4. 全新的 **KaTeX数学公式** 语法；5. 增加了支持**甘特图的mermaid语法[^1]** 功能；6. 增加了 **多屏幕编辑** Markdown文章功能；7. 增加了 **焦点写作模式、预览模式、简洁写作模式、左右区域同步滚轮设置** 等功能，功能按钮位于编辑区域与预览区域中间；8. 增加了 **检查列表** 功能。[^1]: [mermaid语法说明](https://mermaidjs.github.io/)## 功能快捷键撤销：<kbd>Ctrl/Command</kbd> + <kbd>Z</kbd>
重做：<kbd>Ctrl/Command</kbd> + <kbd>Y</kbd>
加粗：<kbd>Ctrl/Command</kbd> + <kbd>B</kbd>
斜体：<kbd>Ctrl/Command</kbd> + <kbd>I</kbd>
标题：<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>H</kbd>
无序列表：<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>U</kbd>
有序列表：<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>O</kbd>
检查列表：<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>C</kbd>
插入代码：<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>K</kbd>
插入链接：<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>L</kbd>
插入图片：<kbd>Ctrl/Command</kbd> + <kbd>Shift</kbd> + <kbd>G</kbd>
查找：<kbd>Ctrl/Command</kbd> + <kbd>F</kbd>
替换：<kbd>Ctrl/Command</kbd> + <kbd>G</kbd>## 合理的创建标题，有助于目录的生成直接输入1次<kbd>#</kbd>，并按下<kbd>space</kbd>后，将生成1级标题。
输入2次<kbd>#</kbd>，并按下<kbd>space</kbd>后，将生成2级标题。
以此类推，我们支持6级标题。有助于使用`TOC`语法后生成一个完美的目录。## 如何改变文本的样式*强调文本* _强调文本_**加粗文本** __加粗文本__==标记文本==~~删除文本~~> 引用文本H~2~O is是液体。2^10^ 运算结果是 1024.## 插入链接与图片链接: [link](https://www.csdn.net/).图片: ![Alt](https://imgconvert.csdnimg.cn/aHR0cHM6Ly9hdmF0YXIuY3Nkbi5uZXQvNy83L0IvMV9yYWxmX2h4MTYzY29tLmpwZw)带尺寸的图片: ![Alt](https://imgconvert.csdnimg.cn/aHR0cHM6Ly9hdmF0YXIuY3Nkbi5uZXQvNy83L0IvMV9yYWxmX2h4MTYzY29tLmpwZw =30x30)居中的图片: ![Alt](https://imgconvert.csdnimg.cn/aHR0cHM6Ly9hdmF0YXIuY3Nkbi5uZXQvNy83L0IvMV9yYWxmX2h4MTYzY29tLmpwZw#pic_center)居中并且带尺寸的图片: ![Alt](https://imgconvert.csdnimg.cn/aHR0cHM6Ly9hdmF0YXIuY3Nkbi5uZXQvNy83L0IvMV9yYWxmX2h4MTYzY29tLmpwZw#pic_center =30x30)当然，我们为了让用户更加便捷，我们增加了图片拖拽功能。## 如何插入一段漂亮的代码片去[博客设置](https://mp.csdn.net/console/configBlog)页面，选择一款你喜欢的代码片高亮样式，下面展示同样高亮的 `代码片`.
```javascript
// An highlighted block
var foo = 'bar';

生成一个适合你的列表

项目
- 项目
  - 项目

项目1
项目2
项目3

计划任务
完成任务

创建一个表格

一个简单的表格是这么创建的：

项目	Value
电脑	$1600
手机	$12
导管	$1

设定内容居中、居左、居右

使用:---------:居中
使用:----------居左
使用----------:居右

第一列	第二列	第三列
第一列文本居中	第二列文本居右	第三列文本居左

SmartyPants

SmartyPants将ASCII标点字符转换为“智能”印刷标点HTML实体。例如：

TYPE	ASCII	HTML
Single backticks	`'Isn't this fun?'`	‘Isn’t this fun?’
Quotes	`"Isn't this fun?"`	“Isn’t this fun?”
Dashes	`-- is en-dash, --- is em-dash`	– is en-dash, — is em-dash

创建一个自定义列表

Markdown: Text-to-HTML conversion tool
Authors: John; Luke

如何创建一个注脚

一个具有注脚的文本。¹

注释也是必不可少的

Markdown将文本转换为 HTML。

KaTeX数学公式

您可以使用渲染LaTeX数学表达式 KaTeX:

Gamma公式展示 Γ(n)=(n−1)!∀n∈N\Gamma(n) = (n-1)!\quad\forall n\in\mathbb NΓ(n)=(n−1)!∀n∈N 是通过欧拉积分

Γ(z)=∫0∞tz−1e−tdt.\Gamma(z) = \int_0^\infty t^{z-1}e^{-t}dt\,. Γ(z)=∫0∞tz−1e−tdt.

你可以找到更多关于的信息 LaTeX 数学表达式here.

新的甘特图功能，丰富你的文章

Mon 06Mon 13Mon 20已完成进行中计划一计划二现有任务Adding GANTT diagram functionality to mermaid

关于 甘特图 语法，参考这儿,

UML 图表

可以使用UML图表进行渲染。 Mermaid. 例如下面产生的一个序列图：

#mermaid-svg-LwgAZG6WmwKk5DSe .label{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);fill:#333;color:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .label text{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .node rect,#mermaid-svg-LwgAZG6WmwKk5DSe .node circle,#mermaid-svg-LwgAZG6WmwKk5DSe .node ellipse,#mermaid-svg-LwgAZG6WmwKk5DSe .node polygon,#mermaid-svg-LwgAZG6WmwKk5DSe .node path{fill:#ECECFF;stroke:#9370db;stroke-width:1px}#mermaid-svg-LwgAZG6WmwKk5DSe .node .label{text-align:center;fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .node.clickable{cursor:pointer}#mermaid-svg-LwgAZG6WmwKk5DSe .arrowheadPath{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .edgePath .path{stroke:#333;stroke-width:1.5px}#mermaid-svg-LwgAZG6WmwKk5DSe .flowchart-link{stroke:#333;fill:none}#mermaid-svg-LwgAZG6WmwKk5DSe .edgeLabel{background-color:#e8e8e8;text-align:center}#mermaid-svg-LwgAZG6WmwKk5DSe .edgeLabel rect{opacity:0.9}#mermaid-svg-LwgAZG6WmwKk5DSe .edgeLabel span{color:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .cluster rect{fill:#ffffde;stroke:#aa3;stroke-width:1px}#mermaid-svg-LwgAZG6WmwKk5DSe .cluster text{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);font-size:12px;background:#ffffde;border:1px solid #aa3;border-radius:2px;pointer-events:none;z-index:100}#mermaid-svg-LwgAZG6WmwKk5DSe .actor{stroke:#ccf;fill:#ECECFF}#mermaid-svg-LwgAZG6WmwKk5DSe text.actor>tspan{fill:#000;stroke:none}#mermaid-svg-LwgAZG6WmwKk5DSe .actor-line{stroke:grey}#mermaid-svg-LwgAZG6WmwKk5DSe .messageLine0{stroke-width:1.5;stroke-dasharray:none;stroke:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .messageLine1{stroke-width:1.5;stroke-dasharray:2, 2;stroke:#333}#mermaid-svg-LwgAZG6WmwKk5DSe #arrowhead path{fill:#333;stroke:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .sequenceNumber{fill:#fff}#mermaid-svg-LwgAZG6WmwKk5DSe #sequencenumber{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe #crosshead path{fill:#333;stroke:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .messageText{fill:#333;stroke:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .labelBox{stroke:#ccf;fill:#ECECFF}#mermaid-svg-LwgAZG6WmwKk5DSe .labelText,#mermaid-svg-LwgAZG6WmwKk5DSe .labelText>tspan{fill:#000;stroke:none}#mermaid-svg-LwgAZG6WmwKk5DSe .loopText,#mermaid-svg-LwgAZG6WmwKk5DSe .loopText>tspan{fill:#000;stroke:none}#mermaid-svg-LwgAZG6WmwKk5DSe .loopLine{stroke-width:2px;stroke-dasharray:2, 2;stroke:#ccf;fill:#ccf}#mermaid-svg-LwgAZG6WmwKk5DSe .note{stroke:#aa3;fill:#fff5ad}#mermaid-svg-LwgAZG6WmwKk5DSe .noteText,#mermaid-svg-LwgAZG6WmwKk5DSe .noteText>tspan{fill:#000;stroke:none}#mermaid-svg-LwgAZG6WmwKk5DSe .activation0{fill:#f4f4f4;stroke:#666}#mermaid-svg-LwgAZG6WmwKk5DSe .activation1{fill:#f4f4f4;stroke:#666}#mermaid-svg-LwgAZG6WmwKk5DSe .activation2{fill:#f4f4f4;stroke:#666}#mermaid-svg-LwgAZG6WmwKk5DSe .mermaid-main-font{font-family:"trebuchet ms", verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe .section{stroke:none;opacity:0.2}#mermaid-svg-LwgAZG6WmwKk5DSe .section0{fill:rgba(102,102,255,0.49)}#mermaid-svg-LwgAZG6WmwKk5DSe .section2{fill:#fff400}#mermaid-svg-LwgAZG6WmwKk5DSe .section1,#mermaid-svg-LwgAZG6WmwKk5DSe .section3{fill:#fff;opacity:0.2}#mermaid-svg-LwgAZG6WmwKk5DSe .sectionTitle0{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .sectionTitle1{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .sectionTitle2{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .sectionTitle3{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .sectionTitle{text-anchor:start;font-size:11px;text-height:14px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe .grid .tick{stroke:#d3d3d3;opacity:0.8;shape-rendering:crispEdges}#mermaid-svg-LwgAZG6WmwKk5DSe .grid .tick text{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe .grid path{stroke-width:0}#mermaid-svg-LwgAZG6WmwKk5DSe .today{fill:none;stroke:red;stroke-width:2px}#mermaid-svg-LwgAZG6WmwKk5DSe .task{stroke-width:2}#mermaid-svg-LwgAZG6WmwKk5DSe .taskText{text-anchor:middle;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe .taskText:not([font-size]){font-size:11px}#mermaid-svg-LwgAZG6WmwKk5DSe .taskTextOutsideRight{fill:#000;text-anchor:start;font-size:11px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe .taskTextOutsideLeft{fill:#000;text-anchor:end;font-size:11px}#mermaid-svg-LwgAZG6WmwKk5DSe .task.clickable{cursor:pointer}#mermaid-svg-LwgAZG6WmwKk5DSe .taskText.clickable{cursor:pointer;fill:#003163 !important;font-weight:bold}#mermaid-svg-LwgAZG6WmwKk5DSe .taskTextOutsideLeft.clickable{cursor:pointer;fill:#003163 !important;font-weight:bold}#mermaid-svg-LwgAZG6WmwKk5DSe .taskTextOutsideRight.clickable{cursor:pointer;fill:#003163 !important;font-weight:bold}#mermaid-svg-LwgAZG6WmwKk5DSe .taskText0,#mermaid-svg-LwgAZG6WmwKk5DSe .taskText1,#mermaid-svg-LwgAZG6WmwKk5DSe .taskText2,#mermaid-svg-LwgAZG6WmwKk5DSe .taskText3{fill:#fff}#mermaid-svg-LwgAZG6WmwKk5DSe .task0,#mermaid-svg-LwgAZG6WmwKk5DSe .task1,#mermaid-svg-LwgAZG6WmwKk5DSe .task2,#mermaid-svg-LwgAZG6WmwKk5DSe .task3{fill:#8a90dd;stroke:#534fbc}#mermaid-svg-LwgAZG6WmwKk5DSe .taskTextOutside0,#mermaid-svg-LwgAZG6WmwKk5DSe .taskTextOutside2{fill:#000}#mermaid-svg-LwgAZG6WmwKk5DSe .taskTextOutside1,#mermaid-svg-LwgAZG6WmwKk5DSe .taskTextOutside3{fill:#000}#mermaid-svg-LwgAZG6WmwKk5DSe .active0,#mermaid-svg-LwgAZG6WmwKk5DSe .active1,#mermaid-svg-LwgAZG6WmwKk5DSe .active2,#mermaid-svg-LwgAZG6WmwKk5DSe .active3{fill:#bfc7ff;stroke:#534fbc}#mermaid-svg-LwgAZG6WmwKk5DSe .activeText0,#mermaid-svg-LwgAZG6WmwKk5DSe .activeText1,#mermaid-svg-LwgAZG6WmwKk5DSe .activeText2,#mermaid-svg-LwgAZG6WmwKk5DSe .activeText3{fill:#000 !important}#mermaid-svg-LwgAZG6WmwKk5DSe .done0,#mermaid-svg-LwgAZG6WmwKk5DSe .done1,#mermaid-svg-LwgAZG6WmwKk5DSe .done2,#mermaid-svg-LwgAZG6WmwKk5DSe .done3{stroke:grey;fill:#d3d3d3;stroke-width:2}#mermaid-svg-LwgAZG6WmwKk5DSe .doneText0,#mermaid-svg-LwgAZG6WmwKk5DSe .doneText1,#mermaid-svg-LwgAZG6WmwKk5DSe .doneText2,#mermaid-svg-LwgAZG6WmwKk5DSe .doneText3{fill:#000 !important}#mermaid-svg-LwgAZG6WmwKk5DSe .crit0,#mermaid-svg-LwgAZG6WmwKk5DSe .crit1,#mermaid-svg-LwgAZG6WmwKk5DSe .crit2,#mermaid-svg-LwgAZG6WmwKk5DSe .crit3{stroke:#f88;fill:red;stroke-width:2}#mermaid-svg-LwgAZG6WmwKk5DSe .activeCrit0,#mermaid-svg-LwgAZG6WmwKk5DSe .activeCrit1,#mermaid-svg-LwgAZG6WmwKk5DSe .activeCrit2,#mermaid-svg-LwgAZG6WmwKk5DSe .activeCrit3{stroke:#f88;fill:#bfc7ff;stroke-width:2}#mermaid-svg-LwgAZG6WmwKk5DSe .doneCrit0,#mermaid-svg-LwgAZG6WmwKk5DSe .doneCrit1,#mermaid-svg-LwgAZG6WmwKk5DSe .doneCrit2,#mermaid-svg-LwgAZG6WmwKk5DSe .doneCrit3{stroke:#f88;fill:#d3d3d3;stroke-width:2;cursor:pointer;shape-rendering:crispEdges}#mermaid-svg-LwgAZG6WmwKk5DSe .milestone{transform:rotate(45deg) scale(0.8, 0.8)}#mermaid-svg-LwgAZG6WmwKk5DSe .milestoneText{font-style:italic}#mermaid-svg-LwgAZG6WmwKk5DSe .doneCritText0,#mermaid-svg-LwgAZG6WmwKk5DSe .doneCritText1,#mermaid-svg-LwgAZG6WmwKk5DSe .doneCritText2,#mermaid-svg-LwgAZG6WmwKk5DSe .doneCritText3{fill:#000 !important}#mermaid-svg-LwgAZG6WmwKk5DSe .activeCritText0,#mermaid-svg-LwgAZG6WmwKk5DSe .activeCritText1,#mermaid-svg-LwgAZG6WmwKk5DSe .activeCritText2,#mermaid-svg-LwgAZG6WmwKk5DSe .activeCritText3{fill:#000 !important}#mermaid-svg-LwgAZG6WmwKk5DSe .titleText{text-anchor:middle;font-size:18px;fill:#000;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe g.classGroup text{fill:#9370db;stroke:none;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);font-size:10px}#mermaid-svg-LwgAZG6WmwKk5DSe g.classGroup text .title{font-weight:bolder}#mermaid-svg-LwgAZG6WmwKk5DSe g.clickable{cursor:pointer}#mermaid-svg-LwgAZG6WmwKk5DSe g.classGroup rect{fill:#ECECFF;stroke:#9370db}#mermaid-svg-LwgAZG6WmwKk5DSe g.classGroup line{stroke:#9370db;stroke-width:1}#mermaid-svg-LwgAZG6WmwKk5DSe .classLabel .box{stroke:none;stroke-width:0;fill:#ECECFF;opacity:0.5}#mermaid-svg-LwgAZG6WmwKk5DSe .classLabel .label{fill:#9370db;font-size:10px}#mermaid-svg-LwgAZG6WmwKk5DSe .relation{stroke:#9370db;stroke-width:1;fill:none}#mermaid-svg-LwgAZG6WmwKk5DSe .dashed-line{stroke-dasharray:3}#mermaid-svg-LwgAZG6WmwKk5DSe #compositionStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LwgAZG6WmwKk5DSe #compositionEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LwgAZG6WmwKk5DSe #aggregationStart{fill:#ECECFF;stroke:#9370db;stroke-width:1}#mermaid-svg-LwgAZG6WmwKk5DSe #aggregationEnd{fill:#ECECFF;stroke:#9370db;stroke-width:1}#mermaid-svg-LwgAZG6WmwKk5DSe #dependencyStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LwgAZG6WmwKk5DSe #dependencyEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LwgAZG6WmwKk5DSe #extensionStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LwgAZG6WmwKk5DSe #extensionEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LwgAZG6WmwKk5DSe .commit-id,#mermaid-svg-LwgAZG6WmwKk5DSe .commit-msg,#mermaid-svg-LwgAZG6WmwKk5DSe .branch-label{fill:lightgrey;color:lightgrey;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe .pieTitleText{text-anchor:middle;font-size:25px;fill:#000;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe .slice{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe g.stateGroup text{fill:#9370db;stroke:none;font-size:10px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe g.stateGroup text{fill:#9370db;fill:#333;stroke:none;font-size:10px}#mermaid-svg-LwgAZG6WmwKk5DSe g.statediagram-cluster .cluster-label text{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe g.stateGroup .state-title{font-weight:bolder;fill:#000}#mermaid-svg-LwgAZG6WmwKk5DSe g.stateGroup rect{fill:#ECECFF;stroke:#9370db}#mermaid-svg-LwgAZG6WmwKk5DSe g.stateGroup line{stroke:#9370db;stroke-width:1}#mermaid-svg-LwgAZG6WmwKk5DSe .transition{stroke:#9370db;stroke-width:1;fill:none}#mermaid-svg-LwgAZG6WmwKk5DSe .stateGroup .composit{fill:white;border-bottom:1px}#mermaid-svg-LwgAZG6WmwKk5DSe .stateGroup .alt-composit{fill:#e0e0e0;border-bottom:1px}#mermaid-svg-LwgAZG6WmwKk5DSe .state-note{stroke:#aa3;fill:#fff5ad}#mermaid-svg-LwgAZG6WmwKk5DSe .state-note text{fill:black;stroke:none;font-size:10px}#mermaid-svg-LwgAZG6WmwKk5DSe .stateLabel .box{stroke:none;stroke-width:0;fill:#ECECFF;opacity:0.7}#mermaid-svg-LwgAZG6WmwKk5DSe .edgeLabel text{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .stateLabel text{fill:#000;font-size:10px;font-weight:bold;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LwgAZG6WmwKk5DSe .node circle.state-start{fill:black;stroke:black}#mermaid-svg-LwgAZG6WmwKk5DSe .node circle.state-end{fill:black;stroke:white;stroke-width:1.5}#mermaid-svg-LwgAZG6WmwKk5DSe #statediagram-barbEnd{fill:#9370db}#mermaid-svg-LwgAZG6WmwKk5DSe .statediagram-cluster rect{fill:#ECECFF;stroke:#9370db;stroke-width:1px}#mermaid-svg-LwgAZG6WmwKk5DSe .statediagram-cluster rect.outer{rx:5px;ry:5px}#mermaid-svg-LwgAZG6WmwKk5DSe .statediagram-state .divider{stroke:#9370db}#mermaid-svg-LwgAZG6WmwKk5DSe .statediagram-state .title-state{rx:5px;ry:5px}#mermaid-svg-LwgAZG6WmwKk5DSe .statediagram-cluster.statediagram-cluster .inner{fill:white}#mermaid-svg-LwgAZG6WmwKk5DSe .statediagram-cluster.statediagram-cluster-alt .inner{fill:#e0e0e0}#mermaid-svg-LwgAZG6WmwKk5DSe .statediagram-cluster .inner{rx:0;ry:0}#mermaid-svg-LwgAZG6WmwKk5DSe .statediagram-state rect.basic{rx:5px;ry:5px}#mermaid-svg-LwgAZG6WmwKk5DSe .statediagram-state rect.divider{stroke-dasharray:10,10;fill:#efefef}#mermaid-svg-LwgAZG6WmwKk5DSe .note-edge{stroke-dasharray:5}#mermaid-svg-LwgAZG6WmwKk5DSe .statediagram-note rect{fill:#fff5ad;stroke:#aa3;stroke-width:1px;rx:0;ry:0}:root{--mermaid-font-family: '"trebuchet ms", verdana, arial';--mermaid-font-family: "Comic Sans MS", "Comic Sans", cursive}#mermaid-svg-LwgAZG6WmwKk5DSe .error-icon{fill:#522}#mermaid-svg-LwgAZG6WmwKk5DSe .error-text{fill:#522;stroke:#522}#mermaid-svg-LwgAZG6WmwKk5DSe .edge-thickness-normal{stroke-width:2px}#mermaid-svg-LwgAZG6WmwKk5DSe .edge-thickness-thick{stroke-width:3.5px}#mermaid-svg-LwgAZG6WmwKk5DSe .edge-pattern-solid{stroke-dasharray:0}#mermaid-svg-LwgAZG6WmwKk5DSe .edge-pattern-dashed{stroke-dasharray:3}#mermaid-svg-LwgAZG6WmwKk5DSe .edge-pattern-dotted{stroke-dasharray:2}#mermaid-svg-LwgAZG6WmwKk5DSe .marker{fill:#333}#mermaid-svg-LwgAZG6WmwKk5DSe .marker.cross{stroke:#333}:root { --mermaid-font-family: "trebuchet ms", verdana, arial;}#mermaid-svg-LwgAZG6WmwKk5DSe {color: rgba(0, 0, 0, 0.75);font: ;}张三李四王五你好！李四, 最近怎么样?你最近怎么样，王五？我很好，谢谢!我很好，谢谢!李四想了很长时间, 文字太长了不适合放在一行.打量着王五...很好... 王五, 你怎么样?张三李四王五

这将产生一个流程图。:

#mermaid-svg-LNpdgARtayckKxZs .label{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);fill:#333;color:#333}#mermaid-svg-LNpdgARtayckKxZs .label text{fill:#333}#mermaid-svg-LNpdgARtayckKxZs .node rect,#mermaid-svg-LNpdgARtayckKxZs .node circle,#mermaid-svg-LNpdgARtayckKxZs .node ellipse,#mermaid-svg-LNpdgARtayckKxZs .node polygon,#mermaid-svg-LNpdgARtayckKxZs .node path{fill:#ECECFF;stroke:#9370db;stroke-width:1px}#mermaid-svg-LNpdgARtayckKxZs .node .label{text-align:center;fill:#333}#mermaid-svg-LNpdgARtayckKxZs .node.clickable{cursor:pointer}#mermaid-svg-LNpdgARtayckKxZs .arrowheadPath{fill:#333}#mermaid-svg-LNpdgARtayckKxZs .edgePath .path{stroke:#333;stroke-width:1.5px}#mermaid-svg-LNpdgARtayckKxZs .flowchart-link{stroke:#333;fill:none}#mermaid-svg-LNpdgARtayckKxZs .edgeLabel{background-color:#e8e8e8;text-align:center}#mermaid-svg-LNpdgARtayckKxZs .edgeLabel rect{opacity:0.9}#mermaid-svg-LNpdgARtayckKxZs .edgeLabel span{color:#333}#mermaid-svg-LNpdgARtayckKxZs .cluster rect{fill:#ffffde;stroke:#aa3;stroke-width:1px}#mermaid-svg-LNpdgARtayckKxZs .cluster text{fill:#333}#mermaid-svg-LNpdgARtayckKxZs div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);font-size:12px;background:#ffffde;border:1px solid #aa3;border-radius:2px;pointer-events:none;z-index:100}#mermaid-svg-LNpdgARtayckKxZs .actor{stroke:#ccf;fill:#ECECFF}#mermaid-svg-LNpdgARtayckKxZs text.actor>tspan{fill:#000;stroke:none}#mermaid-svg-LNpdgARtayckKxZs .actor-line{stroke:grey}#mermaid-svg-LNpdgARtayckKxZs .messageLine0{stroke-width:1.5;stroke-dasharray:none;stroke:#333}#mermaid-svg-LNpdgARtayckKxZs .messageLine1{stroke-width:1.5;stroke-dasharray:2, 2;stroke:#333}#mermaid-svg-LNpdgARtayckKxZs #arrowhead path{fill:#333;stroke:#333}#mermaid-svg-LNpdgARtayckKxZs .sequenceNumber{fill:#fff}#mermaid-svg-LNpdgARtayckKxZs #sequencenumber{fill:#333}#mermaid-svg-LNpdgARtayckKxZs #crosshead path{fill:#333;stroke:#333}#mermaid-svg-LNpdgARtayckKxZs .messageText{fill:#333;stroke:#333}#mermaid-svg-LNpdgARtayckKxZs .labelBox{stroke:#ccf;fill:#ECECFF}#mermaid-svg-LNpdgARtayckKxZs .labelText,#mermaid-svg-LNpdgARtayckKxZs .labelText>tspan{fill:#000;stroke:none}#mermaid-svg-LNpdgARtayckKxZs .loopText,#mermaid-svg-LNpdgARtayckKxZs .loopText>tspan{fill:#000;stroke:none}#mermaid-svg-LNpdgARtayckKxZs .loopLine{stroke-width:2px;stroke-dasharray:2, 2;stroke:#ccf;fill:#ccf}#mermaid-svg-LNpdgARtayckKxZs .note{stroke:#aa3;fill:#fff5ad}#mermaid-svg-LNpdgARtayckKxZs .noteText,#mermaid-svg-LNpdgARtayckKxZs .noteText>tspan{fill:#000;stroke:none}#mermaid-svg-LNpdgARtayckKxZs .activation0{fill:#f4f4f4;stroke:#666}#mermaid-svg-LNpdgARtayckKxZs .activation1{fill:#f4f4f4;stroke:#666}#mermaid-svg-LNpdgARtayckKxZs .activation2{fill:#f4f4f4;stroke:#666}#mermaid-svg-LNpdgARtayckKxZs .mermaid-main-font{font-family:"trebuchet ms", verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs .section{stroke:none;opacity:0.2}#mermaid-svg-LNpdgARtayckKxZs .section0{fill:rgba(102,102,255,0.49)}#mermaid-svg-LNpdgARtayckKxZs .section2{fill:#fff400}#mermaid-svg-LNpdgARtayckKxZs .section1,#mermaid-svg-LNpdgARtayckKxZs .section3{fill:#fff;opacity:0.2}#mermaid-svg-LNpdgARtayckKxZs .sectionTitle0{fill:#333}#mermaid-svg-LNpdgARtayckKxZs .sectionTitle1{fill:#333}#mermaid-svg-LNpdgARtayckKxZs .sectionTitle2{fill:#333}#mermaid-svg-LNpdgARtayckKxZs .sectionTitle3{fill:#333}#mermaid-svg-LNpdgARtayckKxZs .sectionTitle{text-anchor:start;font-size:11px;text-height:14px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs .grid .tick{stroke:#d3d3d3;opacity:0.8;shape-rendering:crispEdges}#mermaid-svg-LNpdgARtayckKxZs .grid .tick text{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs .grid path{stroke-width:0}#mermaid-svg-LNpdgARtayckKxZs .today{fill:none;stroke:red;stroke-width:2px}#mermaid-svg-LNpdgARtayckKxZs .task{stroke-width:2}#mermaid-svg-LNpdgARtayckKxZs .taskText{text-anchor:middle;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs .taskText:not([font-size]){font-size:11px}#mermaid-svg-LNpdgARtayckKxZs .taskTextOutsideRight{fill:#000;text-anchor:start;font-size:11px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs .taskTextOutsideLeft{fill:#000;text-anchor:end;font-size:11px}#mermaid-svg-LNpdgARtayckKxZs .task.clickable{cursor:pointer}#mermaid-svg-LNpdgARtayckKxZs .taskText.clickable{cursor:pointer;fill:#003163 !important;font-weight:bold}#mermaid-svg-LNpdgARtayckKxZs .taskTextOutsideLeft.clickable{cursor:pointer;fill:#003163 !important;font-weight:bold}#mermaid-svg-LNpdgARtayckKxZs .taskTextOutsideRight.clickable{cursor:pointer;fill:#003163 !important;font-weight:bold}#mermaid-svg-LNpdgARtayckKxZs .taskText0,#mermaid-svg-LNpdgARtayckKxZs .taskText1,#mermaid-svg-LNpdgARtayckKxZs .taskText2,#mermaid-svg-LNpdgARtayckKxZs .taskText3{fill:#fff}#mermaid-svg-LNpdgARtayckKxZs .task0,#mermaid-svg-LNpdgARtayckKxZs .task1,#mermaid-svg-LNpdgARtayckKxZs .task2,#mermaid-svg-LNpdgARtayckKxZs .task3{fill:#8a90dd;stroke:#534fbc}#mermaid-svg-LNpdgARtayckKxZs .taskTextOutside0,#mermaid-svg-LNpdgARtayckKxZs .taskTextOutside2{fill:#000}#mermaid-svg-LNpdgARtayckKxZs .taskTextOutside1,#mermaid-svg-LNpdgARtayckKxZs .taskTextOutside3{fill:#000}#mermaid-svg-LNpdgARtayckKxZs .active0,#mermaid-svg-LNpdgARtayckKxZs .active1,#mermaid-svg-LNpdgARtayckKxZs .active2,#mermaid-svg-LNpdgARtayckKxZs .active3{fill:#bfc7ff;stroke:#534fbc}#mermaid-svg-LNpdgARtayckKxZs .activeText0,#mermaid-svg-LNpdgARtayckKxZs .activeText1,#mermaid-svg-LNpdgARtayckKxZs .activeText2,#mermaid-svg-LNpdgARtayckKxZs .activeText3{fill:#000 !important}#mermaid-svg-LNpdgARtayckKxZs .done0,#mermaid-svg-LNpdgARtayckKxZs .done1,#mermaid-svg-LNpdgARtayckKxZs .done2,#mermaid-svg-LNpdgARtayckKxZs .done3{stroke:grey;fill:#d3d3d3;stroke-width:2}#mermaid-svg-LNpdgARtayckKxZs .doneText0,#mermaid-svg-LNpdgARtayckKxZs .doneText1,#mermaid-svg-LNpdgARtayckKxZs .doneText2,#mermaid-svg-LNpdgARtayckKxZs .doneText3{fill:#000 !important}#mermaid-svg-LNpdgARtayckKxZs .crit0,#mermaid-svg-LNpdgARtayckKxZs .crit1,#mermaid-svg-LNpdgARtayckKxZs .crit2,#mermaid-svg-LNpdgARtayckKxZs .crit3{stroke:#f88;fill:red;stroke-width:2}#mermaid-svg-LNpdgARtayckKxZs .activeCrit0,#mermaid-svg-LNpdgARtayckKxZs .activeCrit1,#mermaid-svg-LNpdgARtayckKxZs .activeCrit2,#mermaid-svg-LNpdgARtayckKxZs .activeCrit3{stroke:#f88;fill:#bfc7ff;stroke-width:2}#mermaid-svg-LNpdgARtayckKxZs .doneCrit0,#mermaid-svg-LNpdgARtayckKxZs .doneCrit1,#mermaid-svg-LNpdgARtayckKxZs .doneCrit2,#mermaid-svg-LNpdgARtayckKxZs .doneCrit3{stroke:#f88;fill:#d3d3d3;stroke-width:2;cursor:pointer;shape-rendering:crispEdges}#mermaid-svg-LNpdgARtayckKxZs .milestone{transform:rotate(45deg) scale(0.8, 0.8)}#mermaid-svg-LNpdgARtayckKxZs .milestoneText{font-style:italic}#mermaid-svg-LNpdgARtayckKxZs .doneCritText0,#mermaid-svg-LNpdgARtayckKxZs .doneCritText1,#mermaid-svg-LNpdgARtayckKxZs .doneCritText2,#mermaid-svg-LNpdgARtayckKxZs .doneCritText3{fill:#000 !important}#mermaid-svg-LNpdgARtayckKxZs .activeCritText0,#mermaid-svg-LNpdgARtayckKxZs .activeCritText1,#mermaid-svg-LNpdgARtayckKxZs .activeCritText2,#mermaid-svg-LNpdgARtayckKxZs .activeCritText3{fill:#000 !important}#mermaid-svg-LNpdgARtayckKxZs .titleText{text-anchor:middle;font-size:18px;fill:#000;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs g.classGroup text{fill:#9370db;stroke:none;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);font-size:10px}#mermaid-svg-LNpdgARtayckKxZs g.classGroup text .title{font-weight:bolder}#mermaid-svg-LNpdgARtayckKxZs g.clickable{cursor:pointer}#mermaid-svg-LNpdgARtayckKxZs g.classGroup rect{fill:#ECECFF;stroke:#9370db}#mermaid-svg-LNpdgARtayckKxZs g.classGroup line{stroke:#9370db;stroke-width:1}#mermaid-svg-LNpdgARtayckKxZs .classLabel .box{stroke:none;stroke-width:0;fill:#ECECFF;opacity:0.5}#mermaid-svg-LNpdgARtayckKxZs .classLabel .label{fill:#9370db;font-size:10px}#mermaid-svg-LNpdgARtayckKxZs .relation{stroke:#9370db;stroke-width:1;fill:none}#mermaid-svg-LNpdgARtayckKxZs .dashed-line{stroke-dasharray:3}#mermaid-svg-LNpdgARtayckKxZs #compositionStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LNpdgARtayckKxZs #compositionEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LNpdgARtayckKxZs #aggregationStart{fill:#ECECFF;stroke:#9370db;stroke-width:1}#mermaid-svg-LNpdgARtayckKxZs #aggregationEnd{fill:#ECECFF;stroke:#9370db;stroke-width:1}#mermaid-svg-LNpdgARtayckKxZs #dependencyStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LNpdgARtayckKxZs #dependencyEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LNpdgARtayckKxZs #extensionStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LNpdgARtayckKxZs #extensionEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-LNpdgARtayckKxZs .commit-id,#mermaid-svg-LNpdgARtayckKxZs .commit-msg,#mermaid-svg-LNpdgARtayckKxZs .branch-label{fill:lightgrey;color:lightgrey;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs .pieTitleText{text-anchor:middle;font-size:25px;fill:#000;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs .slice{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs g.stateGroup text{fill:#9370db;stroke:none;font-size:10px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs g.stateGroup text{fill:#9370db;fill:#333;stroke:none;font-size:10px}#mermaid-svg-LNpdgARtayckKxZs g.statediagram-cluster .cluster-label text{fill:#333}#mermaid-svg-LNpdgARtayckKxZs g.stateGroup .state-title{font-weight:bolder;fill:#000}#mermaid-svg-LNpdgARtayckKxZs g.stateGroup rect{fill:#ECECFF;stroke:#9370db}#mermaid-svg-LNpdgARtayckKxZs g.stateGroup line{stroke:#9370db;stroke-width:1}#mermaid-svg-LNpdgARtayckKxZs .transition{stroke:#9370db;stroke-width:1;fill:none}#mermaid-svg-LNpdgARtayckKxZs .stateGroup .composit{fill:white;border-bottom:1px}#mermaid-svg-LNpdgARtayckKxZs .stateGroup .alt-composit{fill:#e0e0e0;border-bottom:1px}#mermaid-svg-LNpdgARtayckKxZs .state-note{stroke:#aa3;fill:#fff5ad}#mermaid-svg-LNpdgARtayckKxZs .state-note text{fill:black;stroke:none;font-size:10px}#mermaid-svg-LNpdgARtayckKxZs .stateLabel .box{stroke:none;stroke-width:0;fill:#ECECFF;opacity:0.7}#mermaid-svg-LNpdgARtayckKxZs .edgeLabel text{fill:#333}#mermaid-svg-LNpdgARtayckKxZs .stateLabel text{fill:#000;font-size:10px;font-weight:bold;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-LNpdgARtayckKxZs .node circle.state-start{fill:black;stroke:black}#mermaid-svg-LNpdgARtayckKxZs .node circle.state-end{fill:black;stroke:white;stroke-width:1.5}#mermaid-svg-LNpdgARtayckKxZs #statediagram-barbEnd{fill:#9370db}#mermaid-svg-LNpdgARtayckKxZs .statediagram-cluster rect{fill:#ECECFF;stroke:#9370db;stroke-width:1px}#mermaid-svg-LNpdgARtayckKxZs .statediagram-cluster rect.outer{rx:5px;ry:5px}#mermaid-svg-LNpdgARtayckKxZs .statediagram-state .divider{stroke:#9370db}#mermaid-svg-LNpdgARtayckKxZs .statediagram-state .title-state{rx:5px;ry:5px}#mermaid-svg-LNpdgARtayckKxZs .statediagram-cluster.statediagram-cluster .inner{fill:white}#mermaid-svg-LNpdgARtayckKxZs .statediagram-cluster.statediagram-cluster-alt .inner{fill:#e0e0e0}#mermaid-svg-LNpdgARtayckKxZs .statediagram-cluster .inner{rx:0;ry:0}#mermaid-svg-LNpdgARtayckKxZs .statediagram-state rect.basic{rx:5px;ry:5px}#mermaid-svg-LNpdgARtayckKxZs .statediagram-state rect.divider{stroke-dasharray:10,10;fill:#efefef}#mermaid-svg-LNpdgARtayckKxZs .note-edge{stroke-dasharray:5}#mermaid-svg-LNpdgARtayckKxZs .statediagram-note rect{fill:#fff5ad;stroke:#aa3;stroke-width:1px;rx:0;ry:0}:root{--mermaid-font-family: '"trebuchet ms", verdana, arial';--mermaid-font-family: "Comic Sans MS", "Comic Sans", cursive}#mermaid-svg-LNpdgARtayckKxZs .error-icon{fill:#522}#mermaid-svg-LNpdgARtayckKxZs .error-text{fill:#522;stroke:#522}#mermaid-svg-LNpdgARtayckKxZs .edge-thickness-normal{stroke-width:2px}#mermaid-svg-LNpdgARtayckKxZs .edge-thickness-thick{stroke-width:3.5px}#mermaid-svg-LNpdgARtayckKxZs .edge-pattern-solid{stroke-dasharray:0}#mermaid-svg-LNpdgARtayckKxZs .edge-pattern-dashed{stroke-dasharray:3}#mermaid-svg-LNpdgARtayckKxZs .edge-pattern-dotted{stroke-dasharray:2}#mermaid-svg-LNpdgARtayckKxZs .marker{fill:#333}#mermaid-svg-LNpdgARtayckKxZs .marker.cross{stroke:#333}:root { --mermaid-font-family: "trebuchet ms", verdana, arial;}#mermaid-svg-LNpdgARtayckKxZs {color: rgba(0, 0, 0, 0.75);font: ;}

链接

长方形

圆

圆角长方形

菱形

关于 Mermaid 语法，参考这儿,

FLowchart流程图

我们依旧会支持flowchart的流程图：

Created with Raphaël 2.2.0开始我的操作确认？结束yesno

关于 Flowchart流程图 语法，参考这儿.

导出与导入

导出

如果你想尝试使用此编辑器, 你可以在此篇文章任意编辑。当你完成了一篇文章的写作, 在上方工具栏找到 文章导出 ，生成一个.md文件或者.html文件进行本地保存。

导入

如果你想加载一篇你写过的.md文件，在上方工具栏可以选择导入功能进行对应扩展名的文件导入，
继续你的创作。

注脚的解释 ↩︎

SQL DDM和DML相关推荐

SQL基础-- 数据处理(DML、RETURNING、MERGE INTO)
--================================================= --SQL基础--> 数据处理(DML.RETURNING.MERGE INTO) --= ...
MySQL学习记录 (四) ----- SQL数据管理语句(DML)
相关文章: <MySQL学习记录 (一) ----- 有关数据库的基本概念和MySQL常用命令> <MySQL学习记录 (二) ----- SQL数据查询语句(DQL)> &l ...
数据库SQL语句使用DML语言插入数据
DML(Data Manipulation Language) 数据操纵语言.SQL的分类之一,命令使用户能够查询数据库以及操作已有数据库中的数据的计算机语言关键字:INSERT, UPDATE, ...
SQL中的DML、DDL、DCL分别是什么意思
SQL命令的分类数据定义语言 DDL(DataDefinition Language) 是 SQL 语言集中负责数据结构定义. DDL 的核心指令是CREATE.ALTER.DROP. 操作的对象包 ...
SQL中的DML语句
SQL中DML语句用法插入操作:INSERT 修改(更新)操作:UPDATE 删除操作:DELETE DML是对表中的数据进行增.删.改的操作.主要包括:INSERT .UPDATE. DELETE ...
oracle dml触发器获取当前执行sql语句,Oracle DML触发器
DML触发器的要点 DML触发器是定义在表上的触发器,由DML事件引发.编写DML触发器的要素是: * 确定触发的表,即在其上定义触发器的表. * 确定触发的事件,DML触发器的触发事件有INSERT ...
SQL中的DML、DDL以及DCL是什么？
DML(data manipulation language)是数据操纵语言:它们是SELECT.UPDATE.INSERT.DELETE,就象它的名字一样,这4条命令是用来对数据库里的数据进行操作的 ...
sql的DDL,DML
DDL语句:数据定义语言与DML语句:数据管理语言-- DDL语句:数据定义语言: DDL(Data Definition Language)语句:数据定义语言表结构的创建(创建表):create t ...
SQL语言之DML语句
数据库版本:MySQL8 文章目录一.DML语句简介二.DML语句的使用 1.INSERT操作 2.UPDATE 操作 3.DELETE操作一.DML语句简介 DML语句是对基本表中的数据进行增 ...