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| gitHub |
| <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 open"><span>IoTDB User Guide (In progress)</span> <!----></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Get Started</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Overview</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Concept</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Server</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Client</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Operation Manual</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>System Tools</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Ecosystem Integration</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Architecture</span> <span class="arrow right"></span></p> <!----></section></li><li><section class="sidebar-group collapsable depth-0"><p class="sidebar-heading"><span>Comparison with TSDBs</span> <span class="arrow right"></span></p> <!----></section></li></ul> </aside> <main class="page"> <div class="content content__default"><h1 id="csv-tool"><a href="#csv-tool" class="header-anchor">#</a> Csv tool</h1> <p>Csv tool is that you can import csv file into IoTDB or export csv file from IoTDB.</p> <h2 id="usage-of-import-csv-sh"><a href="#usage-of-import-csv-sh" class="header-anchor">#</a> Usage of import-csv.sh</h2> <h3 id="create-metadata-optional"><a href="#create-metadata-optional" class="header-anchor">#</a> Create metadata (optional)</h3> <div class="language- line-numbers-mode"><pre class="language-text"><code>SET STORAGE GROUP TO root.fit.d1; |
| SET STORAGE GROUP TO root.fit.d2; |
| SET STORAGE GROUP TO root.fit.p; |
| CREATE TIMESERIES root.fit.d1.s1 WITH DATATYPE=INT32,ENCODING=RLE; |
| CREATE TIMESERIES root.fit.d1.s2 WITH DATATYPE=TEXT,ENCODING=PLAIN; |
| CREATE TIMESERIES root.fit.d2.s1 WITH DATATYPE=INT32,ENCODING=RLE; |
| CREATE TIMESERIES root.fit.d2.s3 WITH DATATYPE=INT32,ENCODING=RLE; |
| CREATE TIMESERIES root.fit.p.s1 WITH DATATYPE=INT32,ENCODING=RLE; |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br></div></div><p>IoTDB has the ability of type inference, so it is not necessary to create metadata before data import. However, we still recommend creating metadata before importing data using the CSV import tool, as this can avoid unnecessary type conversion errors.</p> <h3 id="an-example-of-import-csv-file"><a href="#an-example-of-import-csv-file" class="header-anchor">#</a> An example of import csv file</h3> <div class="language- line-numbers-mode"><pre class="language-text"><code>Time,root.fit.d1.s1,root.fit.d1.s2,root.fit.d2.s1,root.fit.d2.s3,root.fit.p.s1 |
| 1,100,hello,200,300,400 |
| 2,500,world,600,700,800 |
| 3,900,"hello, \"world\"",1000,1100,1200 |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br></div></div><blockquote><p>Note that the following special characters in fields need to be checked before importing:</p> <ol><li><code>,</code> : fields containing <code>,</code> should be quoted by a pair of <code>"</code> or a pair of <code>'</code>.</li> <li><code>"</code> : <code>"</code> in fields should be replaced by <code>\"</code> or fields should be enclosed by <code>'</code>.</li> <li><code>'</code> : <code>'</code> in fields should be replaced by <code>\'</code> or fields should be enclosed by <code>"</code>.</li></ol></blockquote> <h3 id="run-import-shell"><a href="#run-import-shell" class="header-anchor">#</a> Run import shell</h3> <div class="language- line-numbers-mode"><pre class="language-text"><code># Unix/OS X |
| > tools/import-csv.sh -h <ip> -p <port> -u <username> -pw <password> -f <xxx.csv> |
| |
| # Windows |
| > tools\import-csv.bat -h <ip> -p <port> -u <username> -pw <password> -f <xxx.csv> |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><h2 id="usage-of-export-csv-sh"><a href="#usage-of-export-csv-sh" class="header-anchor">#</a> Usage of export-csv.sh</h2> <h3 id="run-export-shell"><a href="#run-export-shell" class="header-anchor">#</a> Run export shell</h3> <div class="language- line-numbers-mode"><pre class="language-text"><code># Unix/OS X |
| > tools/export-csv.sh -h <ip> -p <port> -u <username> -pw <password> -td <directory> [-tf <time-format> -s <sqlfile>] |
| |
| # Windows |
| > tools\export-csv.bat -h <ip> -p <port> -u <username> -pw <password> -td <directory> [-tf <time-format> -s <sqlfile>] |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br></div></div><p>After running export shell, you need to input a data query, like <code>select * from root</code>. or specify a sql file. If you have multi sql in a sql file, sql should be split by new line character.</p> <p>an example sql file:</p> <div class="language- line-numbers-mode"><pre class="language-text"><code>select * from root.fit.d1 |
| select * from root.sg1.d1 |
| </code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br></div></div><blockquote><p>Note that if fields exported by the export tool have the following special characters:</p> <ol><li><code>,</code>: the field will be enclosed by <code>"</code>.</li> <li><code>"</code>: the field will be enclosed by <code>"</code> and the original characters <code>"</code> in the field will be replaced by <code>\"</code>.</li></ol></blockquote></div> <!----> <p style="text-align: center;">Copyright © 2020 The Apache Software Foundation.<br> |
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