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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 User Guide (V0.8.x)</span> <!----></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>0-Get Started</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>1-Overview</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>2-Concept Key Concepts and Terminology</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading open"><span>3-Operation Manual</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/UserGuide/V0.8.x/3-Operation Manual/1-Sample Data.html" class="sidebar-link">Sample Data</a></li><li><a href="/UserGuide/V0.8.x/3-Operation Manual/2-Data Model Selection.html" class="sidebar-link">Data Model Selection</a></li><li><a href="/UserGuide/V0.8.x/3-Operation Manual/3-Data Import.html" class="active sidebar-link">Data Import</a></li><li><a href="/UserGuide/V0.8.x/3-Operation Manual/4-Data Query.html" class="sidebar-link">Data Query</a></li><li><a href="/UserGuide/V0.8.x/3-Operation Manual/5-Data Maintenance.html" class="sidebar-link">Data Maintenance</a></li><li><a href="/UserGuide/V0.8.x/3-Operation Manual/6-Priviledge Management.html" class="sidebar-link">Priviledge Management</a></li></ul></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>4-Deployment and Management</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 Documentation</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-System Tools</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h1 id="data-import"><a href="#data-import" class="header-anchor">#</a> Data Import</h1> <h2 id="import-historical-data"><a href="#import-historical-data" class="header-anchor">#</a> Import Historical Data</h2> <p>This feature is not supported in version 0.8.2.</p> <h2 id="import-real-time-data"><a href="#import-real-time-data" class="header-anchor">#</a> Import Real-time Data</h2> <p>IoTDB provides users with a variety of ways to insert real-time data, such as directly inputting <a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html">INSERT SQL statement</a> in Cli/Shell tools, or using <a href="/UserGuide/V0.8.x/6-JDBC API/1-JDBC API.html">Java JDBC</a> to perform single or batch execution of <a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html">INSERT SQL statement</a>.</p> <p>This section mainly introduces the use of <a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html">INSERT SQL statement</a> for real-time data import in the scenario. See Section 5.1 for a detailed syntax of <a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html">INSERT SQL statement</a>.</p> <h3 id="use-of-insert-statements"><a href="#use-of-insert-statements" class="header-anchor">#</a> Use of INSERT Statements</h3> <p>The <a href="/UserGuide/V0.8.x/5-IoTDB SQL Documentation/1-IoTDB Query Statement.html">INSERT SQL statement</a> statement can be used to insert data into one or more specified timeseries that have been created. For each point of data inserted, it consists of a <a href="/UserGuide/V0.8.x/2-Concept Key Concepts and Terminology/1-Key Concepts and Terminology.html">timestamp</a> and a sensor acquisition value of a numerical type (see <a href="/UserGuide/V0.8.x/2-Concept Key Concepts and Terminology/2-Data Type.html">Data Type</a>).</p> <p>In the scenario of this section, take two timeseries <code>root.ln.wf02.wt02.status</code> and <code>root.ln.wf02.wt02.hardware</code> as an example, and their data types are BOOLEAN and TEXT, respectively.</p> <p>The sample code for single column data insertion is as follows:</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>The above example code inserts the long integer timestamp and the value "true" into the timeseries <code>root.ln.wf02.wt02.status</code> and inserts the long integer timestamp and the value "v1" into the timeseries <code>root.ln.wf02.wt02.hardware</code>. When the execution is successful, cost time is shown to indicate that the data insertion has been completed.</p> <blockquote><p>Note: In IoTDB, TEXT type data can be represented by single and double quotation marks. The insertion statement above uses double quotation marks for TEXT type data. The following example will use single quotation marks for TEXT type data.</p></blockquote> <p>The INSERT statement can also support the insertion of multi-column data at the same time point. The sample code of inserting the values of the two timeseries at the same time point '2' is as follows:</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>After inserting the data, we can simply query the inserted data using the SELECT statement:</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>The result is shown below. From the query results, it can be seen that the insertion statements of single column and multi column data are performed correctly.</p> <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> <h2 id="error-handling-of-insert-statements"><a href="#error-handling-of-insert-statements" class="header-anchor">#</a> Error Handling of INSERT Statements</h2> <p>If the user inserts data into a non-existent timeseries, for example, execute the following commands:</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>Because <code>root.ln.wf02.wt02. temperature</code> does not exist, the system will return the following ERROR information:</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>If the data type inserted by the user is inconsistent with the corresponding data type of the timeseries, for example, execute the following command:</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>The system will return the following ERROR information:</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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