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href="/docs/latest/tutorials/"><span itemprop="name">Getting started</span></a><meta itemprop="position" content="1"></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">Querying tutorials</span><meta itemprop="position" content="2"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Export results</span><meta itemprop="position" content="3"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Export query results</h1></header><p>This tutorial demonstrates how to use the Apache Druid<!-- -->®<!-- --> SQL <a href="/docs/latest/multi-stage-query/reference#extern-function">EXTERN</a> function to export data.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites"></a></h2><p>Before you follow the steps in this tutorial, download Druid as described in the <a href="/docs/latest/tutorials/">Local quickstart</a>.
 Don&#x27;t start Druid, you&#x27;ll do that as part of the tutorial.</p><p>You should be familiar with ingesting and querying data in Druid.
 If you haven&#x27;t already, go through the <a href="/docs/latest/tutorials/tutorial-query">Query data</a> tutorial first.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="export-query-results-to-the-local-file-system">Export query results to the local file system<a href="#export-query-results-to-the-local-file-system" class="hash-link" aria-label="Direct link to Export query results to the local file system" title="Direct link to Export query results to the local file system"></a></h2><p>This example demonstrates how to configure Druid to export data to the local file system.
 While you can use this approach to learn about EXTERN syntax for exporting data, it&#x27;s not suitable for production scenarios.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="configure-druid-local-export-directory">Configure Druid local export directory<a href="#configure-druid-local-export-directory" class="hash-link" aria-label="Direct link to Configure Druid local export directory" title="Direct link to Configure Druid local export directory"></a></h3><p>The following commands set the base path for the Druid exports to <code>/tmp/druid/</code>.
 If the account running Druid doesn&#x27;t have access to <code>/tmp/druid/</code>, change the path.
 For example: <code>/Users/Example/druid</code>.
 If you change the path in this step, use the updated path in all subsequent steps.</p><p>From the root of the Druid distribution, run the following:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token builtin class-name" style="color:rgb(255, 203, 107)">export</span><span class="token plain"> </span><span class="token assign-left variable" style="color:rgb(191, 199, 213)">export_path</span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;/tmp/druid&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token function" style="color:rgb(130, 170, 255)">sed</span><span class="token plain"> -i -e </span><span class="token string" style="color:rgb(195, 232, 141)">$&#x27;$a</span><span class="token string entity" style="color:rgb(195, 232, 141)">\\</span><span class="token string entity" style="color:rgb(195, 232, 141)">\n</span><span class="token string entity" style="color:rgb(195, 232, 141)">\\</span><span class="token string entity" style="color:rgb(195, 232, 141)">\n</span><span class="token string entity" style="color:rgb(195, 232, 141)">\\</span><span class="token string entity" style="color:rgb(195, 232, 141)">\n</span><span class="token string" style="color:rgb(195, 232, 141)">#</span><span class="token string entity" style="color:rgb(195, 232, 141)">\\</span><span class="token string entity" style="color:rgb(195, 232, 141)">\n</span><span class="token string" style="color:rgb(195, 232, 141)">###Local export</span><span class="token string entity" style="color:rgb(195, 232, 141)">\\</span><span class="token string entity" style="color:rgb(195, 232, 141)">\n</span><span class="token string" style="color:rgb(195, 232, 141)">#</span><span class="token string entity" style="color:rgb(195, 232, 141)">\\</span><span class="token string entity" style="color:rgb(195, 232, 141)">\n</span><span class="token string" style="color:rgb(195, 232, 141)">druid.export.storage.baseDir=&#x27;</span><span class="token variable" style="color:rgb(191, 199, 213)">$export_path</span><span class="token plain">&#x27; conf/druid/auto/_common/common.runtime.properties</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This adds the following section to the Druid <code>common.runtime.properties</code> configuration file located in <code>conf/druid/auto/_common</code>:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">#</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">###Local export</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">#</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">druid.export.storage.baseDir=/tmp/druid/</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="start-druid-and-load-sample-data">Start Druid and load sample data<a href="#start-druid-and-load-sample-data" class="hash-link" aria-label="Direct link to Start Druid and load sample data" title="Direct link to Start Druid and load sample data"></a></h3><ol><li><p>From the root of the Druid distribution, launch Druid as follows:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token plain">./bin/start-druid</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li><li><p>After Druid starts, open <a href="http://localhost:8888/" target="_blank" rel="noopener noreferrer">http://localhost:8888/</a> in your browser to access the Web Console.</p></li><li><p>From the <a href="http://localhost:8888/unified-console.html#workbench" target="_blank" rel="noopener noreferrer">Query view</a>, run the following command to load the Wikipedia example data set:</p><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">REPLACE</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">INTO</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;wikipedia&quot;</span><span class="token plain"> OVERWRITE </span><span class="token keyword" style="font-style:italic">ALL</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">WITH</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;ext&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">AS</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token keyword" style="font-style:italic">SELECT</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">*</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token keyword" style="font-style:italic">FROM</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">TABLE</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    EXTERN</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;{&quot;type&quot;:&quot;http&quot;,&quot;uris&quot;:[&quot;https://druid.apache.org/data/wikipedia.json.gz&quot;]}&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">      </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;{&quot;type&quot;:&quot;json&quot;}&#x27;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    </span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> EXTEND </span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;isRobot&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;channel&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;timestamp&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;flags&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;isUnpatrolled&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;page&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;diffUrl&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;added&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">BIGINT</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;comment&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;commentLength&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">BIGINT</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;isNew&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;isMinor&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;delta&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">BIGINT</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;isAnonymous&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;user&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;deltaBucket&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">BIGINT</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;deleted&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">BIGINT</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;namespace&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;cityName&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;countryName&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;regionIsoCode&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;metroCode&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">BIGINT</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;countryIsoCode&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;regionName&quot;</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">VARCHAR</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">SELECT</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  TIME_PARSE</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;timestamp&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">AS</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;__time&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;isRobot&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;channel&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;flags&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;isUnpatrolled&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;page&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;diffUrl&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;added&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;comment&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;commentLength&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;isNew&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;isMinor&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;delta&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;isAnonymous&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;user&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;deltaBucket&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;deleted&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;namespace&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;cityName&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;countryName&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;regionIsoCode&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;metroCode&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;countryIsoCode&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;regionName&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">FROM</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;ext&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">PARTITIONED </span><span class="token keyword" style="font-style:italic">BY</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">DAY</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="query-to-export-data">Query to export data<a href="#query-to-export-data" class="hash-link" aria-label="Direct link to Query to export data" title="Direct link to Query to export data"></a></h3><p>Open a new tab and run the following query to export query results to the path:
 <code>/tmp/druid/wiki_example</code>.
 The path must be a subdirectory of the <code>druid.export.storage.baseDir</code>.</p><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">INSERT</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">INTO</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  EXTERN</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">    </span><span class="token keyword" style="font-style:italic">local</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">exportPath </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;/tmp/druid/wiki_example&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">        </span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">AS</span><span class="token plain"> CSV</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">SELECT</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;channel&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  </span><span class="token function" style="color:rgb(130, 170, 255)">SUM</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;delta&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">AS</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;changes&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">FROM</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;wikipedia&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">GROUP</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">BY</span><span class="token plain"> </span><span class="token number" style="color:rgb(247, 140, 108)">1</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">LIMIT</span><span class="token plain"> </span><span class="token number" style="color:rgb(247, 140, 108)">10</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Druid exports the results of the query to the <code>/tmp/druid/wiki_example</code> directory.
 Run the following command to list the contents of </p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token function" style="color:rgb(130, 170, 255)">ls</span><span class="token plain"> /tmp/druid/wiki_example</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The results are a CSV file export of the data and a directory.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="export-query-results-to-cloud-storage">Export query results to cloud storage<a href="#export-query-results-to-cloud-storage" class="hash-link" aria-label="Direct link to Export query results to cloud storage" title="Direct link to Export query results to cloud storage"></a></h2><p>The steps to export to cloud storage are similar to exporting to the local file system.
 Druid supports Amazon S3 or Google Cloud Storage (GCS) as cloud storage destinations.</p><ol><li><p>Enable the extension for your cloud storage destination. See <a href="/docs/latest/configuration/extensions#loading-core-extensions">Loading core extensions</a>.</p><ul><li><strong>Amazon S3</strong>: <code>druid-s3-extensions</code></li><li><strong>GCS</strong>: <code>google-extensions</code>
 See <a href="/docs/latest/configuration/extensions#loading-core-extensions">Loading core extensions</a> for more information.</li></ul></li><li><p>Configure the additional properties for your cloud storage destination. Replace <code>{CLOUD}</code> with <code>s3</code> or <code>google</code> accordingly:</p><ul><li><code>druid.export.storage.{CLOUD}.tempLocalDir</code>:  Local temporary directory where the query engine stages files to export.</li><li><code>druid.export.storage.{CLOUD}.allowedExportPaths</code>: S3 or GS prefixes allowed as Druid export locations. For example <code>[\&quot;s3://bucket1/export/\&quot;,\&quot;s3://bucket2/export/\&quot;]</code> or <code>[\&quot;gs://bucket1/export/\&quot;, \&quot;gs://bucket2/export/\&quot;]</code>.</li><li><code>druid.export.storage.{CLOUD}.maxRetry</code>: Maximum number of times to attempt cloud API calls to avoid failures from transient errors.</li><li><code>druid.export.storage.s3.chunkSize</code>: Maximum size of individual data chunks to store in the temporary directory.</li></ul></li><li><p>Verify the instance role has the correct permissions to the bucket and folders: read, write, create, and delete. See <a href="/docs/latest/multi-stage-query/security#permissions-for-durable-storage">Permissions for durable storage</a>.</p></li><li><p>Use the query syntax for your cloud storage type. For example:</p><div class="tabs-container tabList__CuJ"><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_LNqP tabs__item--active">S3</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">GCS</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">INSERT</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">INTO</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">EXTERN</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">  s3</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">bucket </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;your_bucket&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> prefix </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;prefix/to/files&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">AS</span><span class="token plain"> CSV</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">SELECT</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;channel&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token function" style="color:rgb(130, 170, 255)">SUM</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;delta&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">AS</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;changes&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">FROM</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;wikipedia&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">GROUP</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">BY</span><span class="token plain"> </span><span class="token number" style="color:rgb(247, 140, 108)">1</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">LIMIT</span><span class="token plain"> </span><span class="token number" style="color:rgb(247, 140, 108)">10</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div><div role="tabpanel" class="tabItem_Ymn6" hidden=""><div class="language-sql codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-sql codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">INSERT</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">INTO</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">EXTERN</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> google</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">bucket </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;your_bucket&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> prefix </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token operator" style="color:rgb(137, 221, 255)">&gt;</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&#x27;prefix/to/files&#x27;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">AS</span><span class="token plain"> CSV</span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">SELECT</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;channel&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token function" style="color:rgb(130, 170, 255)">SUM</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">&quot;delta&quot;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">AS</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;changes&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">FROM</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)">&quot;wikipedia&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">GROUP</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">BY</span><span class="token plain"> </span><span class="token number" style="color:rgb(247, 140, 108)">1</span><span class="token plain"></span><br></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">LIMIT</span><span class="token plain"> </span><span class="token number" style="color:rgb(247, 140, 108)">10</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div></div></div></li><li><p>When querying, use the <code>rowsPerPage</code> query context parameter to restrict the output file size. While it&#x27;s possible to add a very large LIMIT at the end of your query to force Druid to create a single file, we don&#x27;t recommend this technique.</p></li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="learn-more">Learn more<a href="#learn-more" class="hash-link" aria-label="Direct link to Learn more" title="Direct link to Learn more"></a></h2><p>See the following topics for more information:</p><ul><li><a href="/docs/latest/multi-stage-query/reference#extern-to-export-to-a-destination">Export to a destination</a> for a reference of the EXTERN.</li><li><a href="/docs/latest/multi-stage-query/security/#permissions-for-durable-storage">SQL-based ingestion security</a> for cloud permission requirements for MSQ.</li></ul></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/docs/latest/tutorials/tutorial-latest-by"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Query for latest data</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/docs/latest/tutorials/tutorial-sketches-theta"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Theta sketches tutorial</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#prerequisites" class="table-of-contents__link toc-highlight">Prerequisites</a></li><li><a href="#export-query-results-to-the-local-file-system" class="table-of-contents__link toc-highlight">Export query results to the local file system</a><ul><li><a href="#configure-druid-local-export-directory" class="table-of-contents__link toc-highlight">Configure Druid local export directory</a></li><li><a href="#start-druid-and-load-sample-data" class="table-of-contents__link toc-highlight">Start Druid and load sample data</a></li><li><a href="#query-to-export-data" class="table-of-contents__link toc-highlight">Query to export data</a></li></ul></li><li><a href="#export-query-results-to-cloud-storage" class="table-of-contents__link toc-highlight">Export query results to cloud storage</a></li><li><a href="#learn-more" class="table-of-contents__link toc-highlight">Learn more</a></li></ul></div></div></div></div></main></div></div><footer class="footer"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="margin-bottom--sm"><img src="/img/favicon.png" class="themedImage_ToTc themedImage--light_HNdA footer__logo"><img src="/img/favicon.png" class="themedImage_ToTc themedImage--dark_i4oU footer__logo"></div><div class="footer__copyright">Copyright © 2023 Apache Software Foundation. Except where otherwise noted, licensed under CC BY-SA 4.0. Apache Druid, Druid, and the Druid logo are either registered trademarks or trademarks of The Apache Software Foundation in the United States and other countries.</div></div></div></footer></div>
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