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| <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>IoTDB用户手册 (V0.8.x)</span> <!----></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>0-开始使用</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>1-概述</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>2-基本概念</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>3-操作指南</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/zh/UserGuide/V0.8.x/3-Operation Manual/1-Sample Data.html" class="sidebar-link">样例数据</a></li><li><a href="/zh/UserGuide/V0.8.x/3-Operation Manual/2-Data Model Selection.html" class="sidebar-link">数据模型选用与创建</a></li><li><a href="/zh/UserGuide/V0.8.x/3-Operation Manual/3-Data Import.html" class="active sidebar-link">数据接入</a></li><li><a href="/zh/UserGuide/V0.8.x/3-Operation Manual/4-Data Query.html" class="sidebar-link">数据查询</a></li><li><a href="/zh/UserGuide/V0.8.x/3-Operation Manual/5-Data Maintenance.html" class="sidebar-link">数据维护</a></li><li><a href="/zh/UserGuide/V0.8.x/3-Operation Manual/6-Priviledge Management.html" class="sidebar-link">权限管理</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>4-系统部署与管理</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>5-IoTDB SQL文档</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>6-JDBC API</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>7-TsFile</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>8-系统工具</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h1 id="数据接入"><a href="#数据接入" class="header-anchor">#</a> 数据接入</h1> <h2 id="历史数据导入"><a href="#历史数据导入" class="header-anchor">#</a> 历史数据导入</h2> <p>0.8.2版本中暂不支持此功能。</p> <h2 id="实时数据接入"><a href="#实时数据接入" class="header-anchor">#</a> 实时数据接入</h2> <p>IoTDB为用户提供多种插入实时数据的方式，例如在Cli/Shell工具中直接输入插入数据的<a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html">INSERT语句</a>，或使用Java API（标准<a href="/zh/UserGuide/V0.8.x/6-JDBC API/1-JDBC API.html">Java JDBC</a>接口）单条或批量执行插入数据的<a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html">INSERT语句</a>。</p> <p>本节主要为您介绍实时数据接入的<a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html">INSERT语句</a>在场景中的实际使用示例，有关INSERT SQL语句的详细语法请参见本文<a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html">INSERT语句</a>节。</p> <h3 id="使用insert语句"><a href="#使用insert语句" class="header-anchor">#</a> 使用INSERT语句</h3> <p>使用<a href="/zh/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html">INSERT语句</a>可以向指定的已经创建的一条或多条时间序列中插入数据。对于每一条数据，均由一个时间戳类型的<a href="/zh/UserGuide/V0.8.x/2-Concept Key Concepts and Terminology/1-Key Concepts and Terminology.html">时间戳</a>和一个<a href="/zh/UserGuide/V0.8.x/2-Concept Key Concepts and Terminology/2-Data Type.html">数值类型</a>的传感器采集值组成。</p> <p>在本节的场景实例下，以其中的两个时间序列<code>root.ln.wf02.wt02.status</code>和<code>root.ln.wf02.wt02.hardware</code>为例 ，它们的数据类型分别为BOOLEAN和TEXT。</p> <p>单列数据插入示例代码如下：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>IoTDB > insert into root.ln.wf02.wt02(timestamp,status) values(1,true) |
| IoTDB > insert into root.ln.wf02.wt02(timestamp,hardware) values(1, "v1") |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><p>以上示例代码将长整型的timestamp以及值为true的数据插入到时间序列<code>root.ln.wf02.wt02.status</code>中和将长整型的timestamp以及值为”v1”的数据插入到时间序列<code>root.ln.wf02.wt02.hardware</code>中。执行成功后会返回执行时间，代表数据插入已完成。</p> <blockquote><p>注意：在IoTDB中，TEXT类型的数据单双引号都可以来表示,上面的插入语句是用的是双引号表示TEXT类型数据，下面的示例将使用单引号表示TEXT类型数据。</p></blockquote> <p>INSERT语句还可以支持在同一个时间点下多列数据的插入，同时向2时间点插入上述两个时间序列的值，多列数据插入示例代码如下：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>IoTDB > insert into root.ln.wf02.wt02(timestamp, status, hardware) VALUES (2, false, 'v2') |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>插入数据后我们可以使用SELECT语句简单查询已插入的数据。</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>IoTDB > select * from root.ln.wf02 where time < 3 |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>结果如图所示。由查询结果可以看出，单列、多列数据的插入操作正确执行。 |
| <center><img src="https://user-images.githubusercontent.com/13203019/51605021-c2ee1500-1f48-11e9-8f6b-ba9b48875a41.png" style="width:100%;max-width:800px;max-height:600px;margin-left:auto;margin-right:auto;display:block;"></center></p> <h2 id="insert语句的错误处理"><a href="#insert语句的错误处理" class="header-anchor">#</a> INSERT语句的错误处理</h2> <p>若用户向一个不存在的时间序列中插入数据，例如执行以下命令：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>IoTDB > insert into root.ln.wf02.wt02(timestamp, temperature) values(1,"v1") |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>由于<code>root.ln.wf02.wt02. temperature</code>时间序列不存在，系统将会返回以下ERROR告知该Timeseries路径不存在：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>Msg: Current deviceId[root.ln.wf02.wt02] does not contains measurement:temperature |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>若用户插入的数据类型与该Timeseries对应的数据类型不一致，例如执行以下命令：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>IoTDB > insert into root.ln.wf02.wt02(timestamp,hardware) values(1,100) |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br></div></div><p>系统将会返回以下ERROR告知数据类型有误：</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>error: The TEXT data type should be covered by " or ' |
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