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class="page-info"><!----><!----><span class="page-date-info" aria-label="Writing Date"><svg xmlns="http://www.w3.org/2000/svg" class="icon calendar-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="calendar icon"><path d="M716.4 110.137c0-18.753-14.72-33.473-33.472-33.473-18.753 0-33.473 14.72-33.473 33.473v33.473h66.993v-33.473zm-334.87 0c0-18.753-14.72-33.473-33.473-33.473s-33.52 14.72-33.52 33.473v33.473h66.993v-33.473zm468.81 33.52H716.4v100.465c0 18.753-14.72 33.473-33.472 33.473a33.145 33.145 0 01-33.473-33.473V143.657H381.53v100.465c0 18.753-14.72 33.473-33.473 33.473a33.145 33.145 0 01-33.473-33.473V143.657H180.6A134.314 134.314 0 0046.66 277.595v535.756A134.314 134.314 0 00180.6 947.289h669.74a134.36 134.36 0 00133.94-133.938V277.595a134.314 134.314 0 00-133.94-133.938zm33.473 267.877H147.126a33.145 33.145 0 01-33.473-33.473c0-18.752 14.72-33.473 33.473-33.473h736.687c18.752 0 33.472 14.72 33.472 33.473a33.145 33.145 0 01-33.472 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216.446-198.453 220.588-392.892zM531.16 450.445v352.632c117.674 1.553 211.787 40.778 211.787 88.676H304.097c0-48.286 95.149-87.382 213.728-88.676V450.445c-93.077-3.107-167.901-81.297-167.901-177.093 0-8.803 6.99-15.793 15.793-15.793 8.803 0 15.794 6.99 15.794 15.793 0 80.261 63.69 145.635 142.01 145.635s142.011-65.374 142.011-145.635c0-8.803 6.99-15.793 15.794-15.793s15.793 6.99 15.793 15.793c0 95.019-73.789 172.82-165.96 177.093z"></path></svg><span>About 1 min</span><meta property="timeRequired" content="PT1M"></span><!----><!----></div><hr></div><div class="vp-toc-placeholder"><aside id="toc"><!--[--><!----><!--]--><div class="vp-toc-header">On This Page<button type="button" class="print-button" title="Print"><svg xmlns="http://www.w3.org/2000/svg" class="icon print-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="print icon"><path d="M819.2 364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button><div class="arrow end"></div></div><div class="vp-toc-wrapper"><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#change-points">CHANGE_POINTS</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#usage">Usage</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#example">Example</a></li><!----><!--]--></ul></li><!--]--></ul><div class="vp-toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!--[--><!----><!--]--><div class="theme-hope-content"><h1 id="time-series-processing" tabindex="-1"><a class="header-anchor" href="#time-series-processing"><span>Time Series Processing</span></a></h1><h2 id="change-points" tabindex="-1"><a class="header-anchor" href="#change-points"><span>CHANGE_POINTS</span></a></h2><h3 id="usage" tabindex="-1"><a class="header-anchor" href="#usage"><span>Usage</span></a></h3><p>This function is used to remove consecutive identical values from an input sequence.<br> For example, input:<code>1，1，2，2，3</code> output:<code>1，2，3</code>.</p><p><strong>Name：</strong> CHANGE_POINTS</p><p><strong>Input Series：</strong> Support only one input series.</p><p><strong>Parameters：</strong> No parameters.</p><h3 id="example" tabindex="-1"><a class="header-anchor" href="#example"><span>Example</span></a></h3><p>Raw data：</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>+-----------------------------+---------------------------+---------------------------+---------------------------+---------------------------+---------------------------+---------------------------+
|                         Time|root.testChangePoints.d1.s1|root.testChangePoints.d1.s2|root.testChangePoints.d1.s3|root.testChangePoints.d1.s4|root.testChangePoints.d1.s5|root.testChangePoints.d1.s6|
+-----------------------------+---------------------------+---------------------------+---------------------------+---------------------------+---------------------------+---------------------------+
|1970-01-01T08:00:00.001+08:00|                       true|                          1|                          1|                        1.0|                        1.0|                     1test1|
|1970-01-01T08:00:00.002+08:00|                       true|                          2|                          2|                        2.0|                        1.0|                     2test2|
|1970-01-01T08:00:00.003+08:00|                      false|                          1|                          2|                        1.0|                        1.0|                     2test2|
|1970-01-01T08:00:00.004+08:00|                       true|                          1|                          3|                        1.0|                        1.0|                     1test1|
|1970-01-01T08:00:00.005+08:00|                       true|                          1|                          3|                        1.0|                        1.0|                     1test1|
+-----------------------------+---------------------------+---------------------------+---------------------------+---------------------------+---------------------------+---------------------------+
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>SQL for query：</p><div class="language-sql line-numbers-mode" data-ext="sql" data-title="sql"><pre class="language-sql"><code><span class="token keyword">select</span> change_points<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s3<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s4<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s5<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s6<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>testChangePoints<span class="token punctuation">.</span>d1
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Output series：</p><div class="language-text line-numbers-mode" data-ext="text" data-title="text"><pre class="language-text"><code>+-----------------------------+------------------------------------------+------------------------------------------+------------------------------------------+------------------------------------------+------------------------------------------+------------------------------------------+
|                         Time|change_points(root.testChangePoints.d1.s1)|change_points(root.testChangePoints.d1.s2)|change_points(root.testChangePoints.d1.s3)|change_points(root.testChangePoints.d1.s4)|change_points(root.testChangePoints.d1.s5)|change_points(root.testChangePoints.d1.s6)|
+-----------------------------+------------------------------------------+------------------------------------------+------------------------------------------+------------------------------------------+------------------------------------------+------------------------------------------+
|1970-01-01T08:00:00.001+08:00|                                      true|                                         1|                                         1|                                       1.0|                                       1.0|                                    1test1|
|1970-01-01T08:00:00.002+08:00|                                      null|                                         2|                                         2|                                       2.0|                                      null|                                    2test2|
|1970-01-01T08:00:00.003+08:00|                                     false|                                         1|                                      null|                                       1.0|                                      null|                                      null|
|1970-01-01T08:00:00.004+08:00|                                      true|                                      null|                                         3|                                      null|                                      null|                                    1test1|
+-----------------------------+------------------------------------------+------------------------------------------+------------------------------------------+------------------------------------------+------------------------------------------+------------------------------------------+
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