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aria-label="Mathematical"><!---->Mathematical<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Comparison.html" class="nav-link sidebar-link sidebar-page" aria-label="Comparison"><!---->Comparison<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Logical.html" class="nav-link sidebar-link sidebar-page" aria-label="Logical"><!---->Logical<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Conversion.html" class="nav-link sidebar-link sidebar-page" aria-label="Conversion"><!---->Conversion<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Constant.html" class="nav-link sidebar-link sidebar-page" aria-label="Constant"><!---->Constant<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Selection.html" class="nav-link sidebar-link sidebar-page" aria-label="Selection"><!---->Selection<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Continuous-Interval.html" class="nav-link sidebar-link sidebar-page" aria-label="Continuous Interval"><!---->Continuous Interval<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Variation-Trend.html" class="nav-link sidebar-link sidebar-page" aria-label="Variation Trend"><!---->Variation Trend<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Sample.html" class="nav-link sidebar-link sidebar-page" aria-label="Sample"><!---->Sample<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Time-Series.html" class="nav-link sidebar-link sidebar-page" aria-label="Time-Series"><!---->Time-Series<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Lambda.html" class="nav-link sidebar-link sidebar-page" aria-label="Lambda"><!---->Lambda<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Data-Profiling.html" class="nav-link sidebar-link sidebar-page" aria-label="Data Profiling"><!---->Data Profiling<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Anomaly-Detection.html" class="nav-link sidebar-link sidebar-page" aria-label="Anomaly Detection"><!---->Anomaly Detection<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Data-Matching.html" class="nav-link sidebar-link sidebar-page" aria-label="Data Matching"><!---->Data Matching<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Frequency-Domain.html" class="nav-link sidebar-link sidebar-page" aria-label="Frequency Domain"><!---->Frequency Domain<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Data-Quality.html" class="nav-link sidebar-link sidebar-page" aria-label="Data Quality"><!---->Data Quality<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Data-Repairing.html" class="nav-link sidebar-link sidebar-page" aria-label="Data Repairing"><!---->Data Repairing<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a href="/UserGuide/V1.1.x/Operators-Functions/Series-Discovery.html" class="nav-link sidebar-link sidebar-page" aria-label="Series Discovery"><!---->Series Discovery<!----></a><ul class="sidebar-sub-headers"></ul><!--]--></li><li><!--[--><a 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end"></span></button><!----></section></li><li><section class="sidebar-group"><button class="sidebar-heading clickable"><!----><span class="title">Collaboration of Edge and Cloud</span><span class="arrow end"></span></button><!----></section></li><li><section class="sidebar-group"><button class="sidebar-heading clickable"><!----><span class="title">Ecosystem Integration</span><span class="arrow end"></span></button><!----></section></li><li><section class="sidebar-group"><button class="sidebar-heading clickable"><!----><span class="title">Cluster</span><span class="arrow end"></span></button><!----></section></li><li><section class="sidebar-group"><button class="sidebar-heading clickable"><!----><span class="title">FAQ</span><span class="arrow end"></span></button><!----></section></li><li><section class="sidebar-group"><button class="sidebar-heading clickable"><!----><span class="title">Reference</span><span class="arrow end"></span></button><!----></section></li></ul><!--[--><!----><!--]--></aside><!--[--><main class="page" id="main-content"><!--[--><!----><nav class="breadcrumb disable"></nav><div class="page-title"><h1><!---->Quick Start</h1><div class="page-info"><!----><!----><!----><!----><span class="page-reading-time-info" aria-label="Reading Time"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon"><path d="M799.387 122.15c4.402-2.978 7.38-7.897 7.38-13.463v-1.165c0-8.933-7.38-16.312-16.312-16.312H256.33c-8.933 0-16.311 7.38-16.311 16.312v1.165c0 5.825 2.977 10.874 7.637 13.592 4.143 194.44 97.22 354.963 220.201 392.763-122.204 37.542-214.893 196.511-220.2 389.397-4.661 5.049-7.638 11.651-7.638 19.03v5.825h566.49v-5.825c0-7.379-2.849-13.981-7.509-18.9-5.049-193.016-97.867-351.985-220.2-389.527 123.24-37.67 216.446-198.453 220.588-392.892zM531.16 450.445v352.632c117.674 1.553 211.787 40.778 211.787 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--><h1 id="quick-start" tabindex="-1"><a class="header-anchor" href="#quick-start" aria-hidden="true">#</a> Quick Start</h1><h2 id="priority-of-operators" tabindex="-1"><a class="header-anchor" href="#priority-of-operators" aria-hidden="true">#</a> Priority of Operators</h2><table><thead><tr><th style="text-align:center;">priority</th><th style="text-align:left;">operator</th><th style="text-align:left;">meaning</th></tr></thead><tbody><tr><td style="text-align:center;">1</td><td style="text-align:left;"><code>-</code></td><td style="text-align:left;">Unary operator negative</td></tr><tr><td style="text-align:center;">1</td><td style="text-align:left;"><code>+</code></td><td style="text-align:left;">Unary operator positive</td></tr><tr><td style="text-align:center;">1</td><td style="text-align:left;"><code>!</code></td><td style="text-align:left;">Unary operator negation</td></tr><tr><td style="text-align:center;">2</td><td style="text-align:left;"><code>*</code></td><td style="text-align:left;">Binary operator multiply</td></tr><tr><td style="text-align:center;">2</td><td style="text-align:left;"><code>/</code></td><td style="text-align:left;">Binary operator division</td></tr><tr><td style="text-align:center;">2</td><td style="text-align:left;"><code>%</code></td><td style="text-align:left;">Binary operator remainder</td></tr><tr><td style="text-align:center;">3</td><td style="text-align:left;"><code>+</code></td><td style="text-align:left;">Binary operator add</td></tr><tr><td style="text-align:center;">3</td><td style="text-align:left;"><code>-</code></td><td style="text-align:left;">Binary operator minus</td></tr><tr><td style="text-align:center;">4</td><td style="text-align:left;"><code>&gt;</code></td><td style="text-align:left;">Binary compare operator greater than</td></tr><tr><td style="text-align:center;">4</td><td style="text-align:left;"><code>&gt;=</code></td><td style="text-align:left;">Binary compare operator greater or equal to</td></tr><tr><td style="text-align:center;">4</td><td style="text-align:left;"><code>&lt;</code></td><td style="text-align:left;">Binary compare operator less than</td></tr><tr><td style="text-align:center;">4</td><td style="text-align:left;"><code>&lt;=</code></td><td style="text-align:left;">Binary compare operator less or equal to</td></tr><tr><td style="text-align:center;">4</td><td style="text-align:left;"><code>==</code></td><td style="text-align:left;">Binary compare operator equal to</td></tr><tr><td style="text-align:center;">4</td><td style="text-align:left;"><code>!=</code>/<code>&lt;&gt;</code></td><td style="text-align:left;">Binary compare operator non-equal to</td></tr><tr><td style="text-align:center;">5</td><td style="text-align:left;"><code>REGEXP</code></td><td style="text-align:left;"><code>REGEXP</code> operator</td></tr><tr><td style="text-align:center;">5</td><td style="text-align:left;"><code>LIKE</code></td><td style="text-align:left;"><code>LIKE</code> operator</td></tr><tr><td style="text-align:center;">6</td><td style="text-align:left;"><code>IN</code></td><td style="text-align:left;"><code>IN</code> operator</td></tr><tr><td style="text-align:center;">7</td><td style="text-align:left;"><code>and</code>/<code>&amp;</code>/<code>&amp;&amp;</code></td><td style="text-align:left;">Binary logic operator and</td></tr><tr><td style="text-align:center;">8</td><td style="text-align:left;"><code>or</code>/ | / ||</td><td style="text-align:left;">Binary logic operator or</td></tr></tbody></table><h2 id="about" tabindex="-1"><a class="header-anchor" href="#about" aria-hidden="true">#</a> About</h2><p>For applications based on time series data, data quality is vital. <strong>UDF Library</strong> is IoTDB User Defined Functions (UDF) about data quality, including data profiling, data quality evalution and data repairing. It effectively meets the demand for data quality in the industrial field.</p><h2 id="quick-start-1" tabindex="-1"><a class="header-anchor" href="#quick-start-1" aria-hidden="true">#</a> Quick Start</h2><ol><li>Download the JAR with all dependencies and the script of registering UDF.</li><li>Copy the JAR package to <code>ext\udf</code> under the directory of IoTDB system (Please put JAR to this directory of all DataNodes if you use Cluster).</li><li>Run <code>sbin\start-server.bat</code> (for Windows) or <code>sbin\start-server.sh</code> (for Linux or MacOS) to start IoTDB server.</li><li>Copy the script to the directory of IoTDB system (under the root directory, at the same level as <code>sbin</code>), modify the parameters in the script if needed and run it to register UDF.</li></ol><h2 id="download" tabindex="-1"><a class="header-anchor" href="#download" aria-hidden="true">#</a> Download</h2><p>Since our codes are still under review, there are no codes in Apache repository. 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