| import{_ as l,c,d as a,e as n,a as t,w as p,b as o,r as i,o as r}from"./app-Bhq43HqP.js";const u={};function k(d,s){const e=i("RouteLink");return r(),c("div",null,[s[117]||(s[117]=a("h1",{id:"sql-manual",tabindex:"-1"},[a("a",{class:"header-anchor",href:"#sql-manual"},[a("span",null,"SQL Manual")])],-1)),s[118]||(s[118]=a("h2",{id:"database-management",tabindex:"-1"},[a("a",{class:"header-anchor",href:"#database-management"},[a("span",null,"DATABASE MANAGEMENT")])],-1)),a("p",null,[s[1]||(s[1]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Operate-Metadata.html"},{default:p(()=>s[0]||(s[0]=[n("Operate-Metadata")])),_:1}),s[2]||(s[2]=n("."))]),s[119]||(s[119]=o(`<h3 id="create-database" tabindex="-1"><a class="header-anchor" href="#create-database"><span>Create Database</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> <span class="token keyword">database</span> root<span class="token punctuation">.</span>ln</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> <span class="token keyword">database</span> root<span class="token punctuation">.</span>sgcc</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-databases" tabindex="-1"><a class="header-anchor" href="#show-databases"><span>Show Databases</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">SHOW</span> <span class="token keyword">DATABASES</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">SHOW</span> <span class="token keyword">DATABASES</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="delete-database" tabindex="-1"><a class="header-anchor" href="#delete-database"><span>Delete Database</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">DELETE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>ln</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">DELETE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>sgcc</span> |
| <span class="line"><span class="token comment">// delete all data, all timeseries and all databases</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">DELETE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="count-databases" tabindex="-1"><a class="header-anchor" href="#count-databases"><span>Count Databases</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> count <span class="token keyword">databases</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> count <span class="token keyword">databases</span> root<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> count <span class="token keyword">databases</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> count <span class="token keyword">databases</span> root<span class="token punctuation">.</span>sgcc</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="setting-up-heterogeneous-databases-advanced-operations" tabindex="-1"><a class="header-anchor" href="#setting-up-heterogeneous-databases-advanced-operations"><span>Setting up heterogeneous databases (Advanced operations)</span></a></h3><h4 id="set-heterogeneous-parameters-when-creating-a-database" tabindex="-1"><a class="header-anchor" href="#set-heterogeneous-parameters-when-creating-a-database"><span>Set heterogeneous parameters when creating a Database</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>db <span class="token keyword">WITH</span> SCHEMA_REPLICATION_FACTOR<span class="token operator">=</span><span class="token number">1</span><span class="token punctuation">,</span> DATA_REPLICATION_FACTOR<span class="token operator">=</span><span class="token number">3</span><span class="token punctuation">,</span> SCHEMA_REGION_GROUP_NUM<span class="token operator">=</span><span class="token number">1</span><span class="token punctuation">,</span> DATA_REGION_GROUP_NUM<span class="token operator">=</span><span class="token number">2</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="adjust-heterogeneous-parameters-at-run-time" tabindex="-1"><a class="header-anchor" href="#adjust-heterogeneous-parameters-at-run-time"><span>Adjust heterogeneous parameters at run time</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">ALTER</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>db <span class="token keyword">WITH</span> SCHEMA_REGION_GROUP_NUM<span class="token operator">=</span><span class="token number">1</span><span class="token punctuation">,</span> DATA_REGION_GROUP_NUM<span class="token operator">=</span><span class="token number">2</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="show-heterogeneous-databases" tabindex="-1"><a class="header-anchor" href="#show-heterogeneous-databases"><span>Show heterogeneous databases</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">SHOW</span> <span class="token keyword">DATABASES</span> DETAILS</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="ttl" tabindex="-1"><a class="header-anchor" href="#ttl"><span>TTL</span></a></h3><h4 id="set-ttl" tabindex="-1"><a class="header-anchor" href="#set-ttl"><span>Set TTL</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">set</span> ttl <span class="token keyword">to</span> root<span class="token punctuation">.</span>ln <span class="token number">3600000</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">set</span> ttl <span class="token keyword">to</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token number">3600000</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">set</span> ttl <span class="token keyword">to</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token number">3600000</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="unset-ttl" tabindex="-1"><a class="header-anchor" href="#unset-ttl"><span>Unset TTL</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> unset ttl <span class="token keyword">to</span> root<span class="token punctuation">.</span>ln</span> |
| <span class="line">IoTDB<span class="token operator">></span> unset ttl <span class="token keyword">to</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> unset ttl <span class="token keyword">to</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="show-ttl" tabindex="-1"><a class="header-anchor" href="#show-ttl"><span>Show TTL</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">SHOW</span> <span class="token keyword">ALL</span> TTL</span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">SHOW</span> TTL <span class="token keyword">ON</span> StorageGroupNames</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="device-template" tabindex="-1"><a class="header-anchor" href="#device-template"><span>DEVICE TEMPLATE</span></a></h2>`,23)),a("p",null,[s[4]||(s[4]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Operate-Metadata.html"},{default:p(()=>s[3]||(s[3]=[n("Operate-Metadata")])),_:1}),s[5]||(s[5]=n("."))]),s[120]||(s[120]=o(`<figure><img src="https://alioss.timecho.com/docs/img/模板.png" alt="img" tabindex="0" loading="lazy"><figcaption>img</figcaption></figure><figure><img src="https://alioss.timecho.com/docs/img/templateEN.jpg" alt="img" tabindex="0" loading="lazy"><figcaption>img</figcaption></figure><h3 id="create-device-template" tabindex="-1"><a class="header-anchor" href="#create-device-template"><span>Create Device Template</span></a></h3><p><strong>Example 1:</strong> Create a template containing two non-aligned timeseires</p><div class="language-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line">IoTDB<span class="token operator">></span> create device template t1 <span class="token punctuation">(</span>temperature FLOAT <span class="token assign-left variable">encoding</span><span class="token operator">=</span>RLE, status BOOLEAN <span class="token assign-left variable">encoding</span><span class="token operator">=</span>PLAIN <span class="token assign-left variable">compression</span><span class="token operator">=</span>SNAPPY<span class="token punctuation">)</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p><strong>Example 2:</strong> Create a template containing a group of aligned timeseires</p><div class="language-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line">IoTDB<span class="token operator">></span> create device template t2 aligned <span class="token punctuation">(</span>lat FLOAT <span class="token assign-left variable">encoding</span><span class="token operator">=</span>Gorilla, lon FLOAT <span class="token assign-left variable">encoding</span><span class="token operator">=</span>Gorilla<span class="token punctuation">)</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>The<code> lat</code> and <code>lon</code> measurements are aligned.</p><h3 id="set-device-template" tabindex="-1"><a class="header-anchor" href="#set-device-template"><span>Set Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">set</span> device template t1 <span class="token keyword">to</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="activate-device-template" tabindex="-1"><a class="header-anchor" href="#activate-device-template"><span>Activate Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">set</span> device template t1 <span class="token keyword">to</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">set</span> device template t2 <span class="token keyword">to</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d2</span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">create</span> timeseries <span class="token keyword">using</span> device template <span class="token keyword">on</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">create</span> timeseries <span class="token keyword">using</span> device template <span class="token keyword">on</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-device-template" tabindex="-1"><a class="header-anchor" href="#show-device-template"><span>Show Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> device templates</span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> nodes <span class="token operator">in</span> device template t1</span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> paths <span class="token keyword">set</span> device template t1</span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> paths <span class="token keyword">using</span> device template t1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="deactivate-device-template" tabindex="-1"><a class="header-anchor" href="#deactivate-device-template"><span>Deactivate Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">delete</span> timeseries <span class="token keyword">of</span> device template t1 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line">IoTDB<span class="token operator">></span> deactivate device template t1 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">delete</span> timeseries <span class="token keyword">of</span> device template t1 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg2<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> deactivate device template t1 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg2<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="unset-device-template" tabindex="-1"><a class="header-anchor" href="#unset-device-template"><span>Unset Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> unset device template t1 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="drop-device-template" tabindex="-1"><a class="header-anchor" href="#drop-device-template"><span>Drop Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">drop</span> device template t1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="alter-device-template" tabindex="-1"><a class="header-anchor" href="#alter-device-template"><span>Alter Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">alter</span> device template t1 <span class="token keyword">add</span> <span class="token punctuation">(</span>speed <span class="token keyword">FLOAT</span> encoding<span class="token operator">=</span>RLE<span class="token punctuation">,</span> <span class="token keyword">FLOAT</span> <span class="token keyword">TEXT</span> encoding<span class="token operator">=</span>PLAIN compression<span class="token operator">=</span>SNAPPY<span class="token punctuation">)</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="timeseries-management" tabindex="-1"><a class="header-anchor" href="#timeseries-management"><span>TIMESERIES MANAGEMENT</span></a></h2>`,23)),a("p",null,[s[7]||(s[7]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Operate-Metadata.html"},{default:p(()=>s[6]||(s[6]=[n("Operate-Metadata")])),_:1}),s[8]||(s[8]=n("."))]),s[121]||(s[121]=o(`<h3 id="create-timeseries" tabindex="-1"><a class="header-anchor" href="#create-timeseries"><span>Create Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>RLE</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span>hardware <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">TEXT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>RLE</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><ul><li>From v0.13, you can use a simplified version of the SQL statements to create timeseries:</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>RLE</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span>hardware <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">TEXT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>RLE</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><ul><li>Notice that when in the CREATE TIMESERIES statement the encoding method conflicts with the data type, the system gives the corresponding error prompt as shown below:</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">WITH</span> DATATYPE<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span> ENCODING<span class="token operator">=</span>TS_2DIFF</span> |
| <span class="line">error: encoding TS_2DIFF does <span class="token operator">not</span> support <span class="token keyword">BOOLEAN</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="create-aligned-timeseries" tabindex="-1"><a class="header-anchor" href="#create-aligned-timeseries"><span>Create Aligned Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">CREATE</span> ALIGNED TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>GPS<span class="token punctuation">(</span>latitude <span class="token keyword">FLOAT</span> encoding<span class="token operator">=</span>PLAIN compressor<span class="token operator">=</span>SNAPPY<span class="token punctuation">,</span> longitude <span class="token keyword">FLOAT</span> encoding<span class="token operator">=</span>PLAIN compressor<span class="token operator">=</span>SNAPPY<span class="token punctuation">)</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="delete-timeseries" tabindex="-1"><a class="header-anchor" href="#delete-timeseries"><span>Delete Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">delete</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">delete</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature<span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span>hardware</span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">delete</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">drop</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-timeseries" tabindex="-1"><a class="header-anchor" href="#show-timeseries"><span>Show Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">limit</span> <span class="token number">10</span> <span class="token keyword">offset</span> <span class="token number">10</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> timeseries <span class="token keyword">contains</span> <span class="token string">'wf01.wt'</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> dataType<span class="token operator">=</span><span class="token keyword">FLOAT</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> <span class="token keyword">time</span><span class="token operator">>=</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">00</span>:<span class="token number">00</span> <span class="token operator">and</span> <span class="token keyword">time</span><span class="token operator"><=</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">26</span>:<span class="token number">00</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h3 id="count-timeseries" tabindex="-1"><a class="header-anchor" href="#count-timeseries"><span>Count Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token keyword">status</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TIMESERIES <span class="token keyword">contains</span> <span class="token string">'sgcc'</span> </span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> DATATYPE <span class="token operator">=</span> INT64</span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TAGS<span class="token punctuation">(</span>unit<span class="token punctuation">)</span> <span class="token keyword">contains</span> <span class="token string">'c'</span> </span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TAGS<span class="token punctuation">(</span>unit<span class="token punctuation">)</span> <span class="token operator">=</span> <span class="token string">'c'</span> </span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TIMESERIES <span class="token keyword">contains</span> <span class="token string">'sgcc'</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">level</span> <span class="token operator">=</span> <span class="token number">1</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> <span class="token keyword">time</span><span class="token operator">>=</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">00</span>:<span class="token number">00</span> <span class="token operator">and</span> <span class="token keyword">time</span><span class="token operator"><=</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">26</span>:<span class="token number">00</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">1</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">2</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">2</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="tag-and-attribute-management" tabindex="-1"><a class="header-anchor" href="#tag-and-attribute-management"><span>Tag and Attribute Management</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1<span class="token punctuation">(</span>temprature<span class="token punctuation">)</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span> encoding<span class="token operator">=</span>RLE<span class="token punctuation">,</span> compression<span class="token operator">=</span>SNAPPY tags<span class="token punctuation">(</span>tag1<span class="token operator">=</span>v1<span class="token punctuation">,</span> tag2<span class="token operator">=</span>v2<span class="token punctuation">)</span> attributes<span class="token punctuation">(</span>attr1<span class="token operator">=</span>v1<span class="token punctuation">,</span> attr2<span class="token operator">=</span>v2<span class="token punctuation">)</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Rename the tag/attribute key</li></ul><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">ALTER timeseries root.turbine.d1.s1 RENAME tag1 TO newTag1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Reset the tag/attribute value</li></ul><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">ALTER timeseries root.turbine.d1.s1 SET newTag1=newV1, attr1=newV1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Delete the existing tag/attribute</li></ul><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">ALTER timeseries root.turbine.d1.s1 DROP tag1, tag2</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Add new tags</li></ul><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">ALTER timeseries root.turbine.d1.s1 ADD TAGS tag3=v3, tag4=v4</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Add new attributes</li></ul><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">ALTER timeseries root.turbine.d1.s1 ADD ATTRIBUTES attr3=v3, attr4=v4</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Upsert alias, tags and attributes</li></ul><blockquote><p>add alias or a new key-value if the alias or key doesn't exist, otherwise, update the old one with new value.</p></blockquote><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">ALTER timeseries root.turbine.d1.s1 UPSERT ALIAS=newAlias TAGS(tag3=v3, tag4=v4) ATTRIBUTES(attr3=v3, attr4=v4)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Show timeseries using tags. Use TAGS(tagKey) to identify the tags used as filter key</li></ul><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">SHOW TIMESERIES (<\`PathPattern\`>)? timeseriesWhereClause</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>returns all the timeseries information that satisfy the where condition and match the pathPattern. SQL statements are as follows:</p><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">ALTER timeseries root.ln.wf02.wt02.hardware ADD TAGS unit=c</span> |
| <span class="line">ALTER timeseries root.ln.wf02.wt02.status ADD TAGS description=test1</span> |
| <span class="line">show timeseries root.ln.** where TAGS(unit)='c'</span> |
| <span class="line">show timeseries root.ln.** where TAGS(description) contains 'test1'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>count timeseries using tags</li></ul><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">COUNT TIMESERIES (<\`PathPattern\`>)? timeseriesWhereClause</span> |
| <span class="line">COUNT TIMESERIES (<\`PathPattern\`>)? timeseriesWhereClause GROUP BY LEVEL=<INTEGER></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><p>returns all the number of timeseries that satisfy the where condition and match the pathPattern. SQL statements are as follows:</p><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">count timeseries</span> |
| <span class="line">count timeseries root.** where TAGS(unit)='c'</span> |
| <span class="line">count timeseries root.** where TAGS(unit)='c' group by level = 2</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>create aligned timeseries</p><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">create aligned timeseries root.sg1.d1(s1 INT32 tags(tag1=v1, tag2=v2) attributes(attr1=v1, attr2=v2), s2 DOUBLE tags(tag3=v3, tag4=v4) attributes(attr3=v3, attr4=v4))</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>The execution result is as follows:</p><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">IoTDB> show timeseries</span> |
| <span class="line">+--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span> |
| <span class="line">| timeseries|alias| database|dataType|encoding|compression| tags| attributes|deadband|deadband parameters|</span> |
| <span class="line">+--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span> |
| <span class="line">|root.sg1.d1.s1| null| root.sg1| INT32| RLE| SNAPPY|{"tag1":"v1","tag2":"v2"}|{"attr2":"v2","attr1":"v1"}| null| null|</span> |
| <span class="line">|root.sg1.d1.s2| null| root.sg1| DOUBLE| GORILLA| SNAPPY|{"tag4":"v4","tag3":"v3"}|{"attr4":"v4","attr3":"v3"}| null| null|</span> |
| <span class="line">+--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>Support query：</p><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">IoTDB> show timeseries where TAGS(tag1)='v1'</span> |
| <span class="line">+--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span> |
| <span class="line">| timeseries|alias| database|dataType|encoding|compression| tags| attributes|deadband|deadband parameters|</span> |
| <span class="line">+--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span> |
| <span class="line">|root.sg1.d1.s1| null| root.sg1| INT32| RLE| SNAPPY|{"tag1":"v1","tag2":"v2"}|{"attr2":"v2","attr1":"v1"}| null| null|</span> |
| <span class="line">+--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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>The above operations are supported for timeseries tag, attribute updates, etc.</p><h2 id="node-management" tabindex="-1"><a class="header-anchor" href="#node-management"><span>NODE MANAGEMENT</span></a></h2>`,45)),a("p",null,[s[10]||(s[10]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Operate-Metadata.html"},{default:p(()=>s[9]||(s[9]=[n("Operate-Metadata")])),_:1}),s[11]||(s[11]=n("."))]),s[122]||(s[122]=o(`<h3 id="show-child-paths" tabindex="-1"><a class="header-anchor" href="#show-child-paths"><span>Show Child Paths</span></a></h3><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">SHOW CHILD PATHS pathPattern</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="show-child-nodes" tabindex="-1"><a class="header-anchor" href="#show-child-nodes"><span>Show Child Nodes</span></a></h3><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">SHOW CHILD NODES pathPattern</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="count-nodes" tabindex="-1"><a class="header-anchor" href="#count-nodes"><span>Count Nodes</span></a></h3><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">IoTDB > COUNT NODES root.** LEVEL=2</span> |
| <span class="line">IoTDB > COUNT NODES root.ln.** LEVEL=2</span> |
| <span class="line">IoTDB > COUNT NODES root.ln.wf01.** LEVEL=3</span> |
| <span class="line">IoTDB > COUNT NODES root.**.temperature LEVEL=3</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-devices" tabindex="-1"><a class="header-anchor" href="#show-devices"><span>Show Devices</span></a></h3><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">IoTDB> show devices</span> |
| <span class="line">IoTDB> show devices root.ln.**</span> |
| <span class="line">IoTDB> show devices root.ln.** where device contains 't'</span> |
| <span class="line">IoTDB> show devices with database</span> |
| <span class="line">IoTDB> show devices root.ln.** with database</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h3 id="count-devices" tabindex="-1"><a class="header-anchor" href="#count-devices"><span>Count Devices</span></a></h3><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">IoTDB> show devices</span> |
| <span class="line">IoTDB> count devices</span> |
| <span class="line">IoTDB> count devices root.ln.**</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="insert-load-data" tabindex="-1"><a class="header-anchor" href="#insert-load-data"><span>INSERT & LOAD DATA</span></a></h2><h3 id="insert-data" tabindex="-1"><a class="header-anchor" href="#insert-data"><span>Insert Data</span></a></h3>`,12)),a("p",null,[s[13]||(s[13]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Write-Delete-Data.html"},{default:p(()=>s[12]||(s[12]=[n("Write-Delete-Data")])),_:1}),s[14]||(s[14]=n("."))]),s[123]||(s[123]=o(`<h4 id="use-of-insert-statements" tabindex="-1"><a class="header-anchor" href="#use-of-insert-statements"><span>Use of INSERT Statements</span></a></h4><ul><li>Insert Single Timeseries</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">insert</span> <span class="token keyword">into</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span><span class="token keyword">timestamp</span><span class="token punctuation">,</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">values</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token boolean">true</span><span class="token punctuation">)</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">insert</span> <span class="token keyword">into</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span><span class="token keyword">timestamp</span><span class="token punctuation">,</span>hardware<span class="token punctuation">)</span> <span class="token keyword">values</span><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token string">'v1'</span><span class="token punctuation">)</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Insert Multiple Timeseries</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">insert</span> <span class="token keyword">into</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span><span class="token keyword">timestamp</span><span class="token punctuation">,</span> <span class="token keyword">status</span><span class="token punctuation">,</span> hardware<span class="token punctuation">)</span> <span class="token keyword">VALUES</span> <span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span> <span class="token boolean">false</span><span class="token punctuation">,</span> <span class="token string">'v2'</span><span class="token punctuation">)</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">insert</span> <span class="token keyword">into</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span><span class="token keyword">timestamp</span><span class="token punctuation">,</span> <span class="token keyword">status</span><span class="token punctuation">,</span> hardware<span class="token punctuation">)</span> <span class="token keyword">VALUES</span> <span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">,</span> <span class="token boolean">false</span><span class="token punctuation">,</span> <span class="token string">'v3'</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token punctuation">(</span><span class="token number">4</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">,</span> <span class="token string">'v4'</span><span class="token punctuation">)</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Use the Current System Timestamp as the Timestamp of the Data Point</li></ul><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">IoTDB > insert into root.ln.wf02.wt02(status, hardware) values (false, 'v2')</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="insert-data-into-aligned-timeseries" tabindex="-1"><a class="header-anchor" href="#insert-data-into-aligned-timeseries"><span>Insert Data Into Aligned Timeseries</span></a></h4><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">IoTDB > create aligned timeseries root.sg1.d1(s1 INT32, s2 DOUBLE)</span> |
| <span class="line">IoTDB > insert into root.sg1.d1(time, s1, s2) aligned values(1, 1, 1)</span> |
| <span class="line">IoTDB > insert into root.sg1.d1(time, s1, s2) aligned values(2, 2, 2), (3, 3, 3)</span> |
| <span class="line">IoTDB > select * from root.sg1.d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="load-external-tsfile-tool" tabindex="-1"><a class="header-anchor" href="#load-external-tsfile-tool"><span>Load External TsFile Tool</span></a></h3>`,10)),a("p",null,[s[16]||(s[16]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/Tools-System/TsFile-Import-Export-Tool.html"},{default:p(()=>s[15]||(s[15]=[n("Import-Export-Tool")])),_:1}),s[17]||(s[17]=n("."))]),s[124]||(s[124]=o(`<h4 id="load-with-sql" tabindex="-1"><a class="header-anchor" href="#load-with-sql"><span>Load with SQL</span></a></h4><ol><li>Load a single tsfile by specifying a file path (absolute path).</li></ol><ul><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile'</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=true</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=false</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' sglevel=1</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' onSuccess=delete</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=true sglevel=1</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=false sglevel=1</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=true onSuccess=none</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=false sglevel=1 onSuccess=delete</code></li></ul><ol start="2"><li>Load a batch of files by specifying a folder path (absolute path).</li></ol><ul><li><code>load '/Users/Desktop/data'</code></li><li><code>load '/Users/Desktop/data' verify=false</code></li><li><code>load '/Users/Desktop/data' verify=true</code></li><li><code>load '/Users/Desktop/data' verify=true sglevel=1</code></li><li><code>load '/Users/Desktop/data' verify=false sglevel=1 onSuccess=delete</code></li></ul><h4 id="load-with-script" tabindex="-1"><a class="header-anchor" href="#load-with-script"><span>Load with Script</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">./load-rewrite.bat -f D:\\IoTDB\\data -h 192.168.0.101 -p 6667 -u root -pw root</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="delete-data" tabindex="-1"><a class="header-anchor" href="#delete-data"><span>DELETE DATA</span></a></h2>`,8)),a("p",null,[s[19]||(s[19]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Write-Delete-Data.html"},{default:p(()=>s[18]||(s[18]=[n("Write-Delete-Data")])),_:1}),s[20]||(s[20]=n("."))]),s[125]||(s[125]=o(`<h3 id="delete-single-timeseries" tabindex="-1"><a class="header-anchor" href="#delete-single-timeseries"><span>Delete Single Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span><span class="token operator"><=</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">26</span>:<span class="token number">00</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span><span class="token operator">>=</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">00</span>:<span class="token number">00</span> <span class="token operator">and</span> <span class="token keyword">time</span><span class="token operator"><=</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">26</span>:<span class="token number">00</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token number">10</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">10</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token number">20</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">10</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">20</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">10</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">20</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">20</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">=</span> <span class="token number">20</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">4</span> <span class="token operator">or</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token number">0</span></span> |
| <span class="line">Msg: <span class="token number">303</span>: <span class="token keyword">Check</span> metadata error: <span class="token keyword">For</span> <span class="token keyword">delete</span> statement<span class="token punctuation">,</span> <span class="token keyword">where</span> clause can only contain atomic</span> |
| <span class="line">expressions <span class="token operator">like</span> : <span class="token keyword">time</span> <span class="token operator">></span> XXX<span class="token punctuation">,</span> <span class="token keyword">time</span> <span class="token operator"><=</span> XXX<span class="token punctuation">,</span> <span class="token operator">or</span> two atomic expressions connected <span class="token keyword">by</span> <span class="token string">'AND'</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="delete-multiple-timeseries" tabindex="-1"><a class="header-anchor" href="#delete-multiple-timeseries"><span>Delete Multiple Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">26</span>:<span class="token number">00</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token operator">*</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">26</span>:<span class="token number">00</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">delete</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token function">now</span><span class="token punctuation">(</span><span class="token punctuation">)</span></span> |
| <span class="line">Msg: The statement <span class="token operator">is</span> executed successfully<span class="token punctuation">.</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="delete-time-partition-experimental" tabindex="-1"><a class="header-anchor" href="#delete-time-partition-experimental"><span>Delete Time Partition (experimental)</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">DELETE</span> <span class="token keyword">PARTITION</span> root<span class="token punctuation">.</span>ln <span class="token number">0</span><span class="token punctuation">,</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">2</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="query-data" tabindex="-1"><a class="header-anchor" href="#query-data"><span>QUERY DATA</span></a></h2>`,7)),a("p",null,[s[22]||(s[22]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Query-Data.html"},{default:p(()=>s[21]||(s[21]=[n("Query-Data")])),_:1}),s[23]||(s[23]=n("."))]),s[126]||(s[126]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">SELECT</span> <span class="token punctuation">[</span><span class="token keyword">LAST</span><span class="token punctuation">]</span> selectExpr <span class="token punctuation">[</span><span class="token punctuation">,</span> selectExpr<span class="token punctuation">]</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span></span> |
| <span class="line"> <span class="token punctuation">[</span><span class="token keyword">INTO</span> intoItem <span class="token punctuation">[</span><span class="token punctuation">,</span> intoItem<span class="token punctuation">]</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token keyword">FROM</span> prefixPath <span class="token punctuation">[</span><span class="token punctuation">,</span> prefixPath<span class="token punctuation">]</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span></span> |
| <span class="line"> <span class="token punctuation">[</span><span class="token keyword">WHERE</span> whereCondition<span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span><span class="token keyword">GROUP</span> <span class="token keyword">BY</span> {</span> |
| <span class="line"> <span class="token punctuation">(</span><span class="token punctuation">[</span>startTime<span class="token punctuation">,</span> endTime<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">interval</span> <span class="token punctuation">[</span><span class="token punctuation">,</span> slidingStep<span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">|</span></span> |
| <span class="line"> <span class="token keyword">LEVEL</span> <span class="token operator">=</span> levelNum <span class="token punctuation">[</span><span class="token punctuation">,</span> levelNum<span class="token punctuation">]</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> <span class="token operator">|</span></span> |
| <span class="line"> TAGS<span class="token punctuation">(</span>tagKey <span class="token punctuation">[</span><span class="token punctuation">,</span> tagKey<span class="token punctuation">]</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> <span class="token punctuation">)</span> <span class="token operator">|</span></span> |
| <span class="line"> VARIATION<span class="token punctuation">(</span>expression<span class="token punctuation">[</span><span class="token punctuation">,</span>delta<span class="token punctuation">]</span><span class="token punctuation">[</span><span class="token punctuation">,</span>ignoreNull<span class="token operator">=</span><span class="token boolean">true</span><span class="token operator">/</span><span class="token boolean">false</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">|</span></span> |
| <span class="line"> CONDITION<span class="token punctuation">(</span>expression<span class="token punctuation">,</span><span class="token punctuation">[</span>keep<span class="token operator">></span><span class="token operator">/</span><span class="token operator">>=</span><span class="token operator">/</span><span class="token operator">=</span><span class="token operator">/</span><span class="token operator"><</span><span class="token operator">/</span><span class="token operator"><=</span><span class="token punctuation">]</span>threshold<span class="token punctuation">[</span><span class="token punctuation">,</span>ignoreNull<span class="token operator">=</span><span class="token boolean">true</span><span class="token operator">/</span><span class="token boolean">false</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">|</span></span> |
| <span class="line"> <span class="token keyword">SESSION</span><span class="token punctuation">(</span>timeInterval<span class="token punctuation">)</span> <span class="token operator">|</span></span> |
| <span class="line"> <span class="token function">COUNT</span><span class="token punctuation">(</span>expression<span class="token punctuation">,</span> size<span class="token punctuation">[</span><span class="token punctuation">,</span>ignoreNull<span class="token operator">=</span><span class="token boolean">true</span><span class="token operator">/</span><span class="token boolean">false</span><span class="token punctuation">]</span><span class="token punctuation">)</span></span> |
| <span class="line"> }<span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span><span class="token keyword">HAVING</span> havingCondition<span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span><span class="token keyword">ORDER</span> <span class="token keyword">BY</span> sortKey {<span class="token keyword">ASC</span> <span class="token operator">|</span> <span class="token keyword">DESC</span>}<span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span>FILL <span class="token punctuation">(</span>{PREVIOUS <span class="token operator">|</span> LINEAR <span class="token operator">|</span> constant} <span class="token punctuation">(</span><span class="token punctuation">,</span> <span class="token keyword">interval</span><span class="token operator">=</span>DURATION_LITERAL<span class="token punctuation">)</span>?<span class="token punctuation">)</span><span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span>SLIMIT seriesLimit<span class="token punctuation">]</span> <span class="token punctuation">[</span>SOFFSET seriesOffset<span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span><span class="token keyword">LIMIT</span> rowLimit<span class="token punctuation">]</span> <span class="token punctuation">[</span><span class="token keyword">OFFSET</span> rowOffset<span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span>ALIGN <span class="token keyword">BY</span> {<span class="token keyword">TIME</span> <span class="token operator">|</span> DEVICE}<span class="token punctuation">]</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 class="line-number"></div></div></div><h3 id="basic-examples" tabindex="-1"><a class="header-anchor" href="#basic-examples"><span>Basic Examples</span></a></h3><h4 id="select-a-column-of-data-based-on-a-time-interval" tabindex="-1"><a class="header-anchor" href="#select-a-column-of-data-based-on-a-time-interval"><span>Select a Column of Data Based on a Time Interval</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">08</span>:<span class="token number">00.000</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="select-multiple-columns-of-data-based-on-a-time-interval" tabindex="-1"><a class="header-anchor" href="#select-multiple-columns-of-data-based-on-a-time-interval"><span>Select Multiple Columns of Data Based on a Time Interval</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token keyword">status</span><span class="token punctuation">,</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">05</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">12</span>:<span class="token number">00.000</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="select-multiple-columns-of-data-for-the-same-device-according-to-multiple-time-intervals" tabindex="-1"><a class="header-anchor" href="#select-multiple-columns-of-data-for-the-same-device-according-to-multiple-time-intervals"><span>Select Multiple Columns of Data for the Same Device According to Multiple Time Intervals</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token keyword">status</span><span class="token punctuation">,</span>temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token punctuation">(</span><span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">05</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">12</span>:<span class="token number">00.000</span><span class="token punctuation">)</span> <span class="token operator">or</span> <span class="token punctuation">(</span><span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">35</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="choose-multiple-columns-of-data-for-different-devices-according-to-multiple-time-intervals" tabindex="-1"><a class="header-anchor" href="#choose-multiple-columns-of-data-for-different-devices-according-to-multiple-time-intervals"><span>Choose Multiple Columns of Data for Different Devices According to Multiple Time Intervals</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span><span class="token punctuation">,</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span>hardware <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln <span class="token keyword">where</span> <span class="token punctuation">(</span><span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">05</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">12</span>:<span class="token number">00.000</span><span class="token punctuation">)</span> <span class="token operator">or</span> <span class="token punctuation">(</span><span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">35</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="order-by-time-query" tabindex="-1"><a class="header-anchor" href="#order-by-time-query"><span>Order By Time Query</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">1</span> <span class="token keyword">order</span> <span class="token keyword">by</span> <span class="token keyword">time</span> <span class="token keyword">desc</span> <span class="token keyword">limit</span> <span class="token number">10</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="select-clause" tabindex="-1"><a class="header-anchor" href="#select-clause"><span><code>SELECT</code> CLAUSE</span></a></h3><h4 id="use-alias" tabindex="-1"><a class="header-anchor" href="#use-alias"><span>Use Alias</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> s1 <span class="token keyword">as</span> temperature<span class="token punctuation">,</span> s2 <span class="token keyword">as</span> speed <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="nested-expressions" tabindex="-1"><a class="header-anchor" href="#nested-expressions"><span>Nested Expressions</span></a></h4><h5 id="nested-expressions-with-time-series-query" tabindex="-1"><a class="header-anchor" href="#nested-expressions-with-time-series-query"><span>Nested Expressions with Time Series Query</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> a<span class="token punctuation">,</span></span> |
| <span class="line"> b<span class="token punctuation">,</span></span> |
| <span class="line"> <span class="token punctuation">(</span><span class="token punctuation">(</span>a <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">2</span> <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">%</span> <span class="token number">2</span> <span class="token operator">+</span> <span class="token number">1.5</span><span class="token punctuation">,</span></span> |
| <span class="line"> sin<span class="token punctuation">(</span>a <span class="token operator">+</span> sin<span class="token punctuation">(</span>a <span class="token operator">+</span> sin<span class="token punctuation">(</span>b<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">,</span></span> |
| <span class="line"> <span class="token operator">-</span><span class="token punctuation">(</span>a <span class="token operator">+</span> b<span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token punctuation">(</span>sin<span class="token punctuation">(</span>a <span class="token operator">+</span> b<span class="token punctuation">)</span> <span class="token operator">*</span> sin<span class="token punctuation">(</span>a <span class="token operator">+</span> b<span class="token punctuation">)</span> <span class="token operator">+</span> cos<span class="token punctuation">(</span>a <span class="token operator">+</span> b<span class="token punctuation">)</span> <span class="token operator">*</span> cos<span class="token punctuation">(</span>a <span class="token operator">+</span> b<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">1</span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token punctuation">(</span>a <span class="token operator">+</span> b<span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">2</span> <span class="token operator">+</span> sin<span class="token punctuation">(</span>a<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg</span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token punctuation">(</span>a <span class="token operator">+</span> <span class="token operator">*</span><span class="token punctuation">)</span> <span class="token operator">/</span> <span class="token number">2</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1</span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token punctuation">(</span>a <span class="token operator">+</span> b<span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">3</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h5 id="nested-expressions-query-with-aggregations" tabindex="-1"><a class="header-anchor" href="#nested-expressions-query-with-aggregations"><span>Nested Expressions query with aggregations</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">avg</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span><span class="token punctuation">,</span></span> |
| <span class="line"> sin<span class="token punctuation">(</span><span class="token function">avg</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">,</span></span> |
| <span class="line"> <span class="token function">avg</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">,</span></span> |
| <span class="line"> <span class="token operator">-</span><span class="token function">sum</span><span class="token punctuation">(</span>hardware<span class="token punctuation">)</span><span class="token punctuation">,</span></span> |
| <span class="line"> <span class="token function">avg</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token function">sum</span><span class="token punctuation">(</span>hardware<span class="token punctuation">)</span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">avg</span><span class="token punctuation">(</span><span class="token operator">*</span><span class="token punctuation">)</span><span class="token punctuation">,</span> </span> |
| <span class="line"> <span class="token punctuation">(</span><span class="token function">avg</span><span class="token punctuation">(</span><span class="token operator">*</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">3</span> <span class="token operator">/</span> <span class="token number">2</span> <span class="token operator">-</span><span class="token number">1</span> </span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1</span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">avg</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span><span class="token punctuation">,</span></span> |
| <span class="line"> sin<span class="token punctuation">(</span><span class="token function">avg</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">,</span></span> |
| <span class="line"> <span class="token function">avg</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">,</span></span> |
| <span class="line"> <span class="token operator">-</span><span class="token function">sum</span><span class="token punctuation">(</span>hardware<span class="token punctuation">)</span><span class="token punctuation">,</span></span> |
| <span class="line"> <span class="token function">avg</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token function">sum</span><span class="token punctuation">(</span>hardware<span class="token punctuation">)</span> <span class="token keyword">as</span> custom_sum</span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01</span> |
| <span class="line"><span class="token keyword">GROUP</span> <span class="token keyword">BY</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">10</span><span class="token punctuation">,</span> <span class="token number">90</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token number">10</span>ms<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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><h4 id="last-query" tabindex="-1"><a class="header-anchor" href="#last-query"><span>Last Query</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token keyword">last</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token keyword">last</span> <span class="token keyword">status</span><span class="token punctuation">,</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">07</span>T23:<span class="token number">50</span>:<span class="token number">00</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token keyword">last</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">order</span> <span class="token keyword">by</span> timeseries <span class="token keyword">desc</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token keyword">last</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">order</span> <span class="token keyword">by</span> dataType <span class="token keyword">desc</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="where-clause" tabindex="-1"><a class="header-anchor" href="#where-clause"><span><code>WHERE</code> CLAUSE</span></a></h3><h4 id="time-filter" tabindex="-1"><a class="header-anchor" href="#time-filter"><span>Time Filter</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> s1 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">2022</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">05</span>:<span class="token number">00.000</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> s1 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">=</span> <span class="token number">2022</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">05</span>:<span class="token number">00.000</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> s1 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">2022</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">05</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">12</span>:<span class="token number">00.000</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="value-filter" tabindex="-1"><a class="header-anchor" href="#value-filter"><span>Value Filter</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">></span> <span class="token number">36.5</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">status</span> <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">between</span> <span class="token number">36.5</span> <span class="token operator">and</span> <span class="token number">40</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">not</span> <span class="token operator">between</span> <span class="token number">36.5</span> <span class="token operator">and</span> <span class="token number">40</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> code <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token string">'200'</span><span class="token punctuation">,</span> <span class="token string">'300'</span><span class="token punctuation">,</span> <span class="token string">'400'</span><span class="token punctuation">,</span> <span class="token string">'500'</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> code <span class="token operator">not</span> <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token string">'200'</span><span class="token punctuation">,</span> <span class="token string">'300'</span><span class="token punctuation">,</span> <span class="token string">'400'</span><span class="token punctuation">,</span> <span class="token string">'500'</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">is</span> <span class="token boolean">null</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">is</span> <span class="token operator">not</span> <span class="token boolean">null</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h4 id="fuzzy-query" tabindex="-1"><a class="header-anchor" href="#fuzzy-query"><span>Fuzzy Query</span></a></h4><ul><li>Fuzzy matching using <code>Like</code></li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">like</span> <span class="token string">'%cc%'</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>device <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">like</span> <span class="token string">'_b_'</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Fuzzy matching using <code>Regexp</code></li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">regexp</span> <span class="token string">'^[A-Za-z]+$'</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">regexp</span> <span class="token string">'^[a-z]+$'</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">100</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="group-by-clause" tabindex="-1"><a class="header-anchor" href="#group-by-clause"><span><code>GROUP BY</code> CLAUSE</span></a></h3><ul><li>Aggregate By Time without Specifying the Sliding Step Length</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span><span class="token punctuation">,</span> max_value<span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">,</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">07</span>T23:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">1</span>d<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Aggregate By Time Specifying the Sliding Step Length</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span><span class="token punctuation">,</span> max_value<span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">,</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">07</span> <span class="token number">23</span>:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token number">3</span>h<span class="token punctuation">,</span> <span class="token number">1</span>d<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Aggregate by Natural Month</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">group</span> <span class="token keyword">by</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">,</span> <span class="token number">2019</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">07</span>T23:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token number">1</span>mo<span class="token punctuation">,</span> <span class="token number">2</span>mo<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">group</span> <span class="token keyword">by</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">10</span><span class="token operator">-</span><span class="token number">31</span>T00:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">,</span> <span class="token number">2019</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">07</span>T23:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token number">1</span>mo<span class="token punctuation">,</span> <span class="token number">2</span>mo<span class="token punctuation">)</span><span class="token punctuation">;</span> </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Left Open And Right Close Range</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">,</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">07</span>T23:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">]</span><span class="token punctuation">,</span><span class="token number">1</span>d<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Aggregation By Variation</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> __endTime<span class="token punctuation">,</span> <span class="token function">avg</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">count</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">sum</span><span class="token punctuation">(</span>s3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d <span class="token keyword">group</span> <span class="token keyword">by</span> variation<span class="token punctuation">(</span>s6<span class="token punctuation">)</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> __endTime<span class="token punctuation">,</span> <span class="token function">avg</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">count</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">sum</span><span class="token punctuation">(</span>s3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d <span class="token keyword">group</span> <span class="token keyword">by</span> variation<span class="token punctuation">(</span>s6<span class="token punctuation">,</span> ignoreNull<span class="token operator">=</span><span class="token boolean">false</span><span class="token punctuation">)</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> __endTime<span class="token punctuation">,</span> <span class="token function">avg</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">count</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">sum</span><span class="token punctuation">(</span>s3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d <span class="token keyword">group</span> <span class="token keyword">by</span> variation<span class="token punctuation">(</span>s6<span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">)</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> __endTime<span class="token punctuation">,</span> <span class="token function">avg</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">count</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">sum</span><span class="token punctuation">(</span>s3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d <span class="token keyword">group</span> <span class="token keyword">by</span> variation<span class="token punctuation">(</span>s6<span class="token operator">+</span>s5<span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">)</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregation By Condition</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> max_time<span class="token punctuation">(</span>charging_status<span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token function">count</span><span class="token punctuation">(</span>vehicle_status<span class="token punctuation">)</span><span class="token punctuation">,</span>last_value<span class="token punctuation">(</span>soc<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> condition<span class="token punctuation">(</span>charging_status<span class="token operator">=</span><span class="token number">1</span><span class="token punctuation">,</span>KEEP<span class="token operator">>=</span><span class="token number">2</span><span class="token punctuation">,</span>ignoringNull<span class="token operator">=</span><span class="token boolean">true</span><span class="token punctuation">)</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> max_time<span class="token punctuation">(</span>charging_status<span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token function">count</span><span class="token punctuation">(</span>vehicle_status<span class="token punctuation">)</span><span class="token punctuation">,</span>last_value<span class="token punctuation">(</span>soc<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> condition<span class="token punctuation">(</span>charging_status<span class="token operator">=</span><span class="token number">1</span><span class="token punctuation">,</span>KEEP<span class="token operator">>=</span><span class="token number">2</span><span class="token punctuation">,</span>ignoringNull<span class="token operator">=</span><span class="token boolean">false</span><span class="token punctuation">)</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregation By Session</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> __endTime<span class="token punctuation">,</span><span class="token function">count</span><span class="token punctuation">(</span><span class="token operator">*</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">session</span><span class="token punctuation">(</span><span class="token number">1</span>d<span class="token punctuation">)</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> __endTime<span class="token punctuation">,</span><span class="token function">sum</span><span class="token punctuation">(</span>hardware<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt01 <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">session</span><span class="token punctuation">(</span><span class="token number">50</span>s<span class="token punctuation">)</span> <span class="token keyword">having</span> <span class="token function">sum</span><span class="token punctuation">(</span>hardware<span class="token punctuation">)</span><span class="token operator">></span><span class="token number">0</span> align <span class="token keyword">by</span> device</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregation By Count</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span>charging_stauts<span class="token punctuation">)</span><span class="token punctuation">,</span> first_value<span class="token punctuation">(</span>soc<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token function">count</span><span class="token punctuation">(</span>charging_status<span class="token punctuation">,</span><span class="token number">5</span><span class="token punctuation">)</span> </span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span>charging_stauts<span class="token punctuation">)</span><span class="token punctuation">,</span> first_value<span class="token punctuation">(</span>soc<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token function">count</span><span class="token punctuation">(</span>charging_status<span class="token punctuation">,</span><span class="token number">5</span><span class="token punctuation">,</span>ignoreNull<span class="token operator">=</span><span class="token boolean">false</span><span class="token punctuation">)</span> </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregation By Level</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">level</span> <span class="token operator">=</span> <span class="token number">1</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">level</span> <span class="token operator">=</span> <span class="token number">3</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">level</span> <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">3</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> max_value<span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">level</span> <span class="token operator">=</span> <span class="token number">0</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token operator">*</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">level</span> <span class="token operator">=</span> <span class="token number">2</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><ul><li>Aggregate By Time with Level Clause</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">,</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">07</span>T23:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">]</span><span class="token punctuation">,</span><span class="token number">1</span>d<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">level</span><span class="token operator">=</span><span class="token number">1</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">,</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">07</span> <span class="token number">23</span>:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token number">3</span>h<span class="token punctuation">,</span> <span class="token number">1</span>d<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">level</span><span class="token operator">=</span><span class="token number">1</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregation query by one single tag</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">SELECT</span> <span class="token function">AVG</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>factory1<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> TAGS<span class="token punctuation">(</span>city<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Aggregation query by multiple tags</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">SELECT</span> <span class="token function">avg</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>factory1<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> TAGS<span class="token punctuation">(</span>city<span class="token punctuation">,</span> workshop<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Downsampling Aggregation by tags based on Time Window</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">SELECT</span> <span class="token function">avg</span><span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>factory1<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">1000</span><span class="token punctuation">,</span> <span class="token number">10000</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token number">5</span>s<span class="token punctuation">)</span><span class="token punctuation">,</span> TAGS<span class="token punctuation">(</span>city<span class="token punctuation">,</span> workshop<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="having-clause" tabindex="-1"><a class="header-anchor" href="#having-clause"><span><code>HAVING</code> CLAUSE</span></a></h3><p>Correct:</p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">11</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">2</span>ms<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">level</span><span class="token operator">=</span><span class="token number">1</span> <span class="token keyword">having</span> <span class="token function">count</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token operator">></span> <span class="token number">1</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">count</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">11</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">2</span>ms<span class="token punctuation">)</span> <span class="token keyword">having</span> <span class="token function">count</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token operator">></span> <span class="token number">1</span> align <span class="token keyword">by</span> device</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><p>Incorrect:</p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">1</span>ms<span class="token punctuation">)</span> <span class="token keyword">having</span> <span class="token function">sum</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token operator">></span> s1</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">1</span>ms<span class="token punctuation">)</span> <span class="token keyword">having</span> s1 <span class="token operator">></span> <span class="token number">1</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">1</span>ms<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">level</span><span class="token operator">=</span><span class="token number">1</span> <span class="token keyword">having</span> <span class="token function">sum</span><span class="token punctuation">(</span>d1<span class="token punctuation">.</span>s1<span class="token punctuation">)</span> <span class="token operator">></span> <span class="token number">1</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span>d1<span class="token punctuation">.</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">1</span>ms<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">level</span><span class="token operator">=</span><span class="token number">1</span> <span class="token keyword">having</span> <span class="token function">sum</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token operator">></span> <span class="token number">1</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="fill-clause" tabindex="-1"><a class="header-anchor" href="#fill-clause"><span><code>FILL</code> CLAUSE</span></a></h3><h4 id="previous-fill" tabindex="-1"><a class="header-anchor" href="#previous-fill"><span><code>PREVIOUS</code> Fill</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> temperature<span class="token punctuation">,</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">40</span>:<span class="token number">00.000</span> fill<span class="token punctuation">(</span>previous<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="previous-fill-and-specify-the-fill-timeout-threshold" tabindex="-1"><a class="header-anchor" href="#previous-fill-and-specify-the-fill-timeout-threshold"><span><code>PREVIOUS</code> FILL and specify the fill timeout threshold</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> temperature<span class="token punctuation">,</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">40</span>:<span class="token number">00.000</span> fill<span class="token punctuation">(</span>previous<span class="token punctuation">,</span> <span class="token number">2</span>m<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="linear-fill" tabindex="-1"><a class="header-anchor" href="#linear-fill"><span><code>LINEAR</code> Fill</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> temperature<span class="token punctuation">,</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">40</span>:<span class="token number">00.000</span> fill<span class="token punctuation">(</span>linear<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="constant-fill" tabindex="-1"><a class="header-anchor" href="#constant-fill"><span>Constant Fill</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> temperature<span class="token punctuation">,</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">40</span>:<span class="token number">00.000</span> fill<span class="token punctuation">(</span><span class="token number">2.0</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> temperature<span class="token punctuation">,</span> <span class="token keyword">status</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">>=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">37</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T16:<span class="token number">40</span>:<span class="token number">00.000</span> fill<span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="limit-and-slimit-clauses-pagination" tabindex="-1"><a class="header-anchor" href="#limit-and-slimit-clauses-pagination"><span><code>LIMIT</code> and <code>SLIMIT</code> CLAUSES (PAGINATION)</span></a></h3><h4 id="row-control-over-query-results" tabindex="-1"><a class="header-anchor" href="#row-control-over-query-results"><span>Row Control over Query Results</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token keyword">status</span><span class="token punctuation">,</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">limit</span> <span class="token number">10</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token keyword">status</span><span class="token punctuation">,</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">limit</span> <span class="token number">5</span> <span class="token keyword">offset</span> <span class="token number">3</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token keyword">status</span><span class="token punctuation">,</span>temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">05</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span><span class="token operator"><</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">12</span>:<span class="token number">00.000</span> <span class="token keyword">limit</span> <span class="token number">2</span> <span class="token keyword">offset</span> <span class="token number">3</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span><span class="token punctuation">,</span> max_value<span class="token punctuation">(</span>temperature<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">,</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">07</span>T23:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">1</span>d<span class="token punctuation">)</span> <span class="token keyword">limit</span> <span class="token number">5</span> <span class="token keyword">offset</span> <span class="token number">3</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="column-control-over-query-results" tabindex="-1"><a class="header-anchor" href="#column-control-over-query-results"><span>Column Control over Query Results</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">05</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">12</span>:<span class="token number">00.000</span> slimit <span class="token number">1</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">05</span>:<span class="token number">00.000</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator"><</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">12</span>:<span class="token number">00.000</span> slimit <span class="token number">1</span> soffset <span class="token number">1</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> max_value<span class="token punctuation">(</span><span class="token operator">*</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">,</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">07</span>T23:<span class="token number">00</span>:<span class="token number">00</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token number">1</span>d<span class="token punctuation">)</span> slimit <span class="token number">1</span> soffset <span class="token number">1</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="row-and-column-control-over-query-results" tabindex="-1"><a class="header-anchor" href="#row-and-column-control-over-query-results"><span>Row and Column Control over Query Results</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01 <span class="token keyword">limit</span> <span class="token number">10</span> <span class="token keyword">offset</span> <span class="token number">100</span> slimit <span class="token number">2</span> soffset <span class="token number">0</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="order-by-clause" tabindex="-1"><a class="header-anchor" href="#order-by-clause"><span><code>ORDER BY</code> CLAUSE</span></a></h3><h4 id="order-by-in-align-by-time-mode" tabindex="-1"><a class="header-anchor" href="#order-by-in-align-by-time-mode"><span>Order by in ALIGN BY TIME mode</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">01</span>:<span class="token number">00</span> <span class="token keyword">order</span> <span class="token keyword">by</span> <span class="token keyword">time</span> <span class="token keyword">desc</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="order-by-in-align-by-device-mode" tabindex="-1"><a class="header-anchor" href="#order-by-in-align-by-device-mode"><span>Order by in ALIGN BY DEVICE mode</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">01</span>:<span class="token number">00</span> <span class="token keyword">order</span> <span class="token keyword">by</span> device <span class="token keyword">desc</span><span class="token punctuation">,</span><span class="token keyword">time</span> <span class="token keyword">asc</span> align <span class="token keyword">by</span> device<span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">01</span>:<span class="token number">00</span> <span class="token keyword">order</span> <span class="token keyword">by</span> <span class="token keyword">time</span> <span class="token keyword">asc</span><span class="token punctuation">,</span>device <span class="token keyword">desc</span> align <span class="token keyword">by</span> device<span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">01</span>:<span class="token number">00</span> align <span class="token keyword">by</span> device<span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token operator">*</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">00</span>:<span class="token number">00.000</span><span class="token operator">+</span><span class="token number">08</span>:<span class="token number">00</span><span class="token punctuation">,</span><span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">03</span>:<span class="token number">00.000</span><span class="token operator">+</span><span class="token number">08</span>:<span class="token number">00</span><span class="token punctuation">]</span><span class="token punctuation">,</span><span class="token number">1</span>m<span class="token punctuation">)</span> <span class="token keyword">order</span> <span class="token keyword">by</span> device <span class="token keyword">asc</span><span class="token punctuation">,</span><span class="token keyword">time</span> <span class="token keyword">asc</span> align <span class="token keyword">by</span> device</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="order-by-arbitrary-expressions" tabindex="-1"><a class="header-anchor" href="#order-by-arbitrary-expressions"><span>Order by arbitrary expressions</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> score <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">order</span> <span class="token keyword">by</span> score <span class="token keyword">desc</span> align <span class="token keyword">by</span> device</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> score<span class="token punctuation">,</span>total <span class="token keyword">from</span> root<span class="token punctuation">.</span>one <span class="token keyword">order</span> <span class="token keyword">by</span> base<span class="token operator">+</span>score<span class="token operator">+</span>bonus <span class="token keyword">desc</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> score<span class="token punctuation">,</span>total <span class="token keyword">from</span> root<span class="token punctuation">.</span>one <span class="token keyword">order</span> <span class="token keyword">by</span> total <span class="token keyword">desc</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> base<span class="token punctuation">,</span> score<span class="token punctuation">,</span> bonus<span class="token punctuation">,</span> total <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">order</span> <span class="token keyword">by</span> total <span class="token keyword">desc</span> NULLS <span class="token keyword">Last</span><span class="token punctuation">,</span></span> |
| <span class="line"> score <span class="token keyword">desc</span> NULLS <span class="token keyword">Last</span><span class="token punctuation">,</span></span> |
| <span class="line"> bonus <span class="token keyword">desc</span> NULLS <span class="token keyword">Last</span><span class="token punctuation">,</span></span> |
| <span class="line"> <span class="token keyword">time</span> <span class="token keyword">desc</span> align <span class="token keyword">by</span> device</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> min_value<span class="token punctuation">(</span>total<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">order</span> <span class="token keyword">by</span> min_value<span class="token punctuation">(</span>total<span class="token punctuation">)</span> <span class="token keyword">asc</span> align <span class="token keyword">by</span> device</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> min_value<span class="token punctuation">(</span>total<span class="token punctuation">)</span><span class="token punctuation">,</span>max_value<span class="token punctuation">(</span>base<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">order</span> <span class="token keyword">by</span> max_value<span class="token punctuation">(</span>total<span class="token punctuation">)</span> <span class="token keyword">desc</span> align <span class="token keyword">by</span> device</span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> score <span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">order</span> <span class="token keyword">by</span> device <span class="token keyword">asc</span><span class="token punctuation">,</span> score <span class="token keyword">desc</span><span class="token punctuation">,</span> <span class="token keyword">time</span> <span class="token keyword">asc</span> align <span class="token keyword">by</span> device</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 class="line-number"></div></div></div><h3 id="align-by-clause" tabindex="-1"><a class="header-anchor" href="#align-by-clause"><span><code>ALIGN BY</code> CLAUSE</span></a></h3><h4 id="align-by-device" tabindex="-1"><a class="header-anchor" href="#align-by-device"><span>Align by Device</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2017</span><span class="token operator">-</span><span class="token number">11</span><span class="token operator">-</span><span class="token number">01</span>T00:<span class="token number">01</span>:<span class="token number">00</span> align <span class="token keyword">by</span> device<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="into-clause-query-write-back" tabindex="-1"><a class="header-anchor" href="#into-clause-query-write-back"><span><code>INTO</code> CLAUSE (QUERY WRITE-BACK)</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2 <span class="token keyword">into</span> root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d1<span class="token punctuation">(</span>t1<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d2<span class="token punctuation">(</span>t1<span class="token punctuation">,</span> t2<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d1<span class="token punctuation">(</span>t2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d2<span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span>s1 <span class="token operator">+</span> s2<span class="token punctuation">)</span><span class="token punctuation">,</span> last_value<span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">into</span> root<span class="token punctuation">.</span>agg<span class="token punctuation">.</span><span class="token function">count</span><span class="token punctuation">(</span>s1_add_s2<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>agg<span class="token punctuation">.</span>last_value<span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">100</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token number">10</span>ms<span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2 <span class="token keyword">into</span> root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d1<span class="token punctuation">(</span>t1<span class="token punctuation">,</span> t2<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d2<span class="token punctuation">(</span>t1<span class="token punctuation">,</span> t2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d2 align <span class="token keyword">by</span> device<span class="token punctuation">;</span></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> s1 <span class="token operator">+</span> s2 <span class="token keyword">into</span> root<span class="token punctuation">.</span>expr<span class="token punctuation">.</span><span class="token keyword">add</span><span class="token punctuation">(</span>d1s1_d1s2<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>expr<span class="token punctuation">.</span><span class="token keyword">add</span><span class="token punctuation">(</span>d2s1_d2s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d2 align <span class="token keyword">by</span> device<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Using variable placeholders:</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2</span> |
| <span class="line"><span class="token keyword">into</span> root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d1<span class="token punctuation">(</span>::<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d2<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d1<span class="token punctuation">(</span>\${<span class="token number">3</span>}<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d2<span class="token punctuation">(</span>::<span class="token punctuation">)</span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d2<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> d1<span class="token punctuation">.</span>s1<span class="token punctuation">,</span> d1<span class="token punctuation">.</span>s2<span class="token punctuation">,</span> d2<span class="token punctuation">.</span>s3<span class="token punctuation">,</span> d3<span class="token punctuation">.</span>s4</span> |
| <span class="line"><span class="token keyword">into</span> ::<span class="token punctuation">(</span>s1_1<span class="token punctuation">,</span> s2_2<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d2_2<span class="token punctuation">(</span>s3_3<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>\${<span class="token number">2</span>}_copy<span class="token punctuation">.</span>::<span class="token punctuation">(</span>s4<span class="token punctuation">)</span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">into</span> root<span class="token punctuation">.</span>sg_bk<span class="token punctuation">.</span>::<span class="token punctuation">(</span>::<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span><span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> s3<span class="token punctuation">,</span> s4</span> |
| <span class="line"><span class="token keyword">into</span> root<span class="token punctuation">.</span>backup_sg<span class="token punctuation">.</span>d1<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> s3<span class="token punctuation">,</span> s4<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>backup_sg<span class="token punctuation">.</span>d2<span class="token punctuation">(</span>::<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d3<span class="token punctuation">(</span>backup_\${<span class="token number">4</span>}<span class="token punctuation">)</span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d2<span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d3</span> |
| <span class="line">align <span class="token keyword">by</span> device<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token function">avg</span><span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">sum</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token function">sum</span><span class="token punctuation">(</span>s3<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">count</span><span class="token punctuation">(</span>s4<span class="token punctuation">)</span></span> |
| <span class="line"><span class="token keyword">into</span> root<span class="token punctuation">.</span>agg_\${<span class="token number">2</span>}<span class="token punctuation">.</span>::<span class="token punctuation">(</span>avg_s1<span class="token punctuation">,</span> sum_s2_add_s3<span class="token punctuation">,</span> count_s4<span class="token punctuation">)</span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line">align <span class="token keyword">by</span> device<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">into</span> ::<span class="token punctuation">(</span>backup_\${<span class="token number">4</span>}<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> align <span class="token keyword">by</span> device<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> <span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2 <span class="token keyword">into</span> root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d1<span class="token punctuation">(</span>t1<span class="token punctuation">,</span> t2<span class="token punctuation">)</span><span class="token punctuation">,</span> aligned root<span class="token punctuation">.</span>sg_copy<span class="token punctuation">.</span>d2<span class="token punctuation">(</span>t1<span class="token punctuation">,</span> t2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">,</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d2 align <span class="token keyword">by</span> device<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 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><h2 id="maintennance" tabindex="-1"><a class="header-anchor" href="#maintennance"><span>Maintennance</span></a></h2><p>Generate the corresponding query plan:</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">explain select s1,s2 from root.sg.d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>Execute the corresponding SQL, analyze the execution and output:</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">explain analyze select s1,s2 from root.sg.d1 order by s1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="operator" tabindex="-1"><a class="header-anchor" href="#operator"><span>OPERATOR</span></a></h2>`,100)),a("p",null,[s[25]||(s[25]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Operator-and-Expression.html"},{default:p(()=>s[24]||(s[24]=[n("Operator-and-Expression")])),_:1}),s[26]||(s[26]=n("."))]),s[127]||(s[127]=a("h3",{id:"arithmetic-operators",tabindex:"-1"},[a("a",{class:"header-anchor",href:"#arithmetic-operators"},[a("span",null,"Arithmetic Operators")])],-1)),a("p",null,[s[28]||(s[28]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#arithmetic-operators-and-functions"},{default:p(()=>s[27]||(s[27]=[n("Arithmetic Operators and Functions")])),_:1}),s[29]||(s[29]=n("."))]),s[128]||(s[128]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> <span class="token operator">-</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> <span class="token operator">+</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">+</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">-</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">*</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">/</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">%</span> s2 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="comparison-operators" tabindex="-1"><a class="header-anchor" href="#comparison-operators"><span>Comparison Operators</span></a></h3>`,2)),a("p",null,[s[31]||(s[31]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#comparison-operators-and-functions"},{default:p(()=>s[30]||(s[30]=[n("Comparison Operators and Functions")])),_:1}),s[32]||(s[32]=n("."))]),s[129]||(s[129]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># Basic comparison operators</span></span> |
| <span class="line"><span class="token keyword">select</span> a<span class="token punctuation">,</span> b<span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span><span class="token punctuation">,</span> a <span class="token operator"><=</span> b<span class="token punctuation">,</span> <span class="token operator">!</span><span class="token punctuation">(</span>a <span class="token operator"><=</span> b<span class="token punctuation">)</span><span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span> <span class="token operator">&&</span> a <span class="token operator">></span> b <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># \`BETWEEN ... AND ...\` operator</span></span> |
| <span class="line"><span class="token keyword">select</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">between</span> <span class="token number">36.5</span> <span class="token operator">and</span> <span class="token number">40</span><span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">not</span> <span class="token operator">between</span> <span class="token number">36.5</span> <span class="token operator">and</span> <span class="token number">40</span><span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Fuzzy matching operator: Use \`Like\` for fuzzy matching</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">like</span> <span class="token string">'%cc%'</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>device <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">like</span> <span class="token string">'_b_'</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Fuzzy matching operator: Use \`Regexp\` for fuzzy matching</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">regexp</span> <span class="token string">'^[A-Za-z]+$'</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">regexp</span> <span class="token string">'^[a-z]+$'</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">100</span></span> |
| <span class="line"><span class="token keyword">select</span> b<span class="token punctuation">,</span> b <span class="token operator">like</span> <span class="token string">'1%'</span><span class="token punctuation">,</span> b <span class="token operator">regexp</span> <span class="token string">'[0-2]'</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># \`IS NULL\` operator</span></span> |
| <span class="line"><span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">is</span> <span class="token boolean">null</span><span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">is</span> <span class="token operator">not</span> <span class="token boolean">null</span><span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># \`IN\` operator</span></span> |
| <span class="line"><span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> code <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token string">'200'</span><span class="token punctuation">,</span> <span class="token string">'300'</span><span class="token punctuation">,</span> <span class="token string">'400'</span><span class="token punctuation">,</span> <span class="token string">'500'</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> code <span class="token operator">not</span> <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token string">'200'</span><span class="token punctuation">,</span> <span class="token string">'300'</span><span class="token punctuation">,</span> <span class="token string">'400'</span><span class="token punctuation">,</span> <span class="token string">'500'</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> a<span class="token punctuation">,</span> a <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 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><h3 id="logical-operators" tabindex="-1"><a class="header-anchor" href="#logical-operators"><span>Logical Operators</span></a></h3>`,2)),a("p",null,[s[34]||(s[34]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#logical-operators"},{default:p(()=>s[33]||(s[33]=[n("Logical Operators")])),_:1}),s[35]||(s[35]=n("."))]),s[130]||(s[130]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> a<span class="token punctuation">,</span> b<span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span><span class="token punctuation">,</span> a <span class="token operator"><=</span> b<span class="token punctuation">,</span> <span class="token operator">!</span><span class="token punctuation">(</span>a <span class="token operator"><=</span> b<span class="token punctuation">)</span><span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span> <span class="token operator">&&</span> a <span class="token operator">></span> b <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="built-in-functions" tabindex="-1"><a class="header-anchor" href="#built-in-functions"><span>BUILT-IN FUNCTIONS</span></a></h2>`,2)),a("p",null,[s[37]||(s[37]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html"},{default:p(()=>s[36]||(s[36]=[n("Operator-and-Expression")])),_:1}),s[38]||(s[38]=n("."))]),s[131]||(s[131]=a("h3",{id:"aggregate-functions",tabindex:"-1"},[a("a",{class:"header-anchor",href:"#aggregate-functions"},[a("span",null,"Aggregate Functions")])],-1)),a("p",null,[s[40]||(s[40]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#aggregate-functions"},{default:p(()=>s[39]||(s[39]=[n("Aggregate Functions")])),_:1}),s[41]||(s[41]=n("."))]),s[132]||(s[132]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">0</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">,</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">1</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>db<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">0</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">1</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>db<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> time_duration<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>db<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h3 id="arithmetic-functions" tabindex="-1"><a class="header-anchor" href="#arithmetic-functions"><span>Arithmetic Functions</span></a></h3>`,2)),a("p",null,[s[43]||(s[43]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#arithmetic-operators-and-functions"},{default:p(()=>s[42]||(s[42]=[n("Arithmetic Operators and Functions")])),_:1}),s[44]||(s[44]=n("."))]),s[133]||(s[133]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> sin<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> cos<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> tan<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">limit</span> <span class="token number">5</span> <span class="token keyword">offset</span> <span class="token number">1000</span><span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> s4<span class="token punctuation">,</span><span class="token function">round</span><span class="token punctuation">(</span>s4<span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token function">round</span><span class="token punctuation">(</span>s4<span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token function">round</span><span class="token punctuation">(</span>s4<span class="token punctuation">,</span><span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="comparison-functions" tabindex="-1"><a class="header-anchor" href="#comparison-functions"><span>Comparison Functions</span></a></h3>`,2)),a("p",null,[s[46]||(s[46]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#comparison-operators-and-functions"},{default:p(()=>s[45]||(s[45]=[n("Comparison Operators and Functions")])),_:1}),s[47]||(s[47]=n("."))]),s[134]||(s[134]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> ts<span class="token punctuation">,</span> on_off<span class="token punctuation">(</span>ts<span class="token punctuation">,</span> <span class="token string">'threshold'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> ts<span class="token punctuation">,</span> in_range<span class="token punctuation">(</span>ts<span class="token punctuation">,</span> <span class="token string">'lower'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">,</span> <span class="token string">'upper'</span><span class="token operator">=</span><span class="token string">'3.1'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="string-processing-functions" tabindex="-1"><a class="header-anchor" href="#string-processing-functions"><span>String Processing Functions</span></a></h3>`,2)),a("p",null,[s[49]||(s[49]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#string-processing"},{default:p(()=>s[48]||(s[48]=[n("String Processing")])),_:1}),s[50]||(s[50]=n("."))]),s[135]||(s[135]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> string_contains<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'s'</span><span class="token operator">=</span><span class="token string">'warn'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d4<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> string_matches<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'regex'</span><span class="token operator">=</span><span class="token string">'[^\\\\s]+37229'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d4<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> length<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> locate<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> locate<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span> <span class="token string">"reverse"</span><span class="token operator">=</span><span class="token string">"true"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> startswith<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> endswith<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> concat<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> <span class="token string">"target1"</span><span class="token operator">=</span><span class="token string">"IoT"</span><span class="token punctuation">,</span> <span class="token string">"target2"</span><span class="token operator">=</span><span class="token string">"DB"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> concat<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> <span class="token string">"target1"</span><span class="token operator">=</span><span class="token string">"IoT"</span><span class="token punctuation">,</span> <span class="token string">"target2"</span><span class="token operator">=</span><span class="token string">"DB"</span><span class="token punctuation">,</span> <span class="token string">"series_behind"</span><span class="token operator">=</span><span class="token string">"true"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> substring<span class="token punctuation">(</span>s1 <span class="token keyword">from</span> <span class="token number">1</span> <span class="token keyword">for</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> <span class="token keyword">replace</span><span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'es'</span><span class="token punctuation">,</span> <span class="token string">'tt'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> upper<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> lower<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s3<span class="token punctuation">,</span> trim<span class="token punctuation">(</span>s3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> strcmp<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> strreplace<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"replace"</span><span class="token operator">=</span><span class="token string">"/"</span><span class="token punctuation">,</span> <span class="token string">"limit"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> strreplace<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"replace"</span><span class="token operator">=</span><span class="token string">"/"</span><span class="token punctuation">,</span> <span class="token string">"limit"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span> <span class="token string">"offset"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span> <span class="token string">"reverse"</span><span class="token operator">=</span><span class="token string">"true"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> regexmatch<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">"\\d+\\.\\d+\\.\\d+\\.\\d+"</span><span class="token punctuation">,</span> <span class="token string">"group"</span><span class="token operator">=</span><span class="token string">"0"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> regexreplace<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">"192\\.168\\.0\\.(\\d+)"</span><span class="token punctuation">,</span> <span class="token string">"replace"</span><span class="token operator">=</span><span class="token string">"cluster-$1"</span><span class="token punctuation">,</span> <span class="token string">"limit"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> regexsplit<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"index"</span><span class="token operator">=</span><span class="token string">"-1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> regexsplit<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"index"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="data-type-conversion-function" tabindex="-1"><a class="header-anchor" href="#data-type-conversion-function"><span>Data Type Conversion Function</span></a></h3>`,2)),a("p",null,[s[52]||(s[52]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#data-type-conversion-function"},{default:p(()=>s[51]||(s[51]=[n("Data Type Conversion Function")])),_:1}),s[53]||(s[53]=n("."))]),s[136]||(s[136]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">SELECT</span> cast<span class="token punctuation">(</span>s1 <span class="token keyword">as</span> INT32<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="constant-timeseries-generating-functions" tabindex="-1"><a class="header-anchor" href="#constant-timeseries-generating-functions"><span>Constant Timeseries Generating Functions</span></a></h3>`,2)),a("p",null,[s[55]||(s[55]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#constant-timeseries-generating-functions"},{default:p(()=>s[54]||(s[54]=[n("Constant Timeseries Generating Functions")])),_:1}),s[56]||(s[56]=n("."))]),s[137]||(s[137]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> const<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'value'</span><span class="token operator">=</span><span class="token string">'1024'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'INT64'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> pi<span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> e<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1<span class="token punctuation">;</span> </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="selector-functions" tabindex="-1"><a class="header-anchor" href="#selector-functions"><span>Selector Functions</span></a></h3>`,2)),a("p",null,[s[58]||(s[58]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#selector-functions"},{default:p(()=>s[57]||(s[57]=[n("Selector Functions")])),_:1}),s[59]||(s[59]=n("."))]),s[138]||(s[138]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> top_k<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> bottom_k<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d2 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">12</span><span class="token operator">-</span><span class="token number">10</span>T20:<span class="token number">36</span>:<span class="token number">15.530</span><span class="token operator">+</span><span class="token number">08</span>:<span class="token number">00</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="continuous-interval-functions" tabindex="-1"><a class="header-anchor" href="#continuous-interval-functions"><span>Continuous Interval Functions</span></a></h3>`,2)),a("p",null,[s[61]||(s[61]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#continuous-interval-functions"},{default:p(()=>s[60]||(s[60]=[n("Continuous Interval Functions")])),_:1}),s[62]||(s[62]=n("."))]),s[139]||(s[139]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> zero_count<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> non_zero_count<span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> zero_duration<span class="token punctuation">(</span>s3<span class="token punctuation">)</span><span class="token punctuation">,</span> non_zero_duration<span class="token punctuation">(</span>s4<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d2<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="variation-trend-calculation-functions" tabindex="-1"><a class="header-anchor" href="#variation-trend-calculation-functions"><span>Variation Trend Calculation Functions</span></a></h3>`,2)),a("p",null,[s[64]||(s[64]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#variation-trend-calculation-functions"},{default:p(()=>s[63]||(s[63]=[n("Variation Trend Calculation Functions")])),_:1}),s[65]||(s[65]=n("."))]),s[140]||(s[140]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> time_difference<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> difference<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> non_negative_difference<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> derivative<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> non_negative_derivative<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">limit</span> <span class="token number">5</span> <span class="token keyword">offset</span> <span class="token number">1000</span><span class="token punctuation">;</span> </span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">SELECT</span> DIFF<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> DIFF<span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">SELECT</span> DIFF<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> DIFF<span class="token punctuation">(</span>s2<span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="sample-functions" tabindex="-1"><a class="header-anchor" href="#sample-functions"><span>Sample Functions</span></a></h3>`,2)),a("p",null,[s[67]||(s[67]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#sample-functions"},{default:p(()=>s[66]||(s[66]=[n("Sample Functions")])),_:1}),s[68]||(s[68]=n("."))]),s[141]||(s[141]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> equal_size_bucket_random_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> random_sample <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'avg'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_avg<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'max'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_max<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span><span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'min'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_min<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'sum'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_sum<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'extreme'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_extreme<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'variance'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_variance <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> equal_size_bucket_m4_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> M4_sample <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'avg'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_avg_sample<span class="token punctuation">,</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'stendis'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_stendis_sample<span class="token punctuation">,</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'cos'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_cos_sample<span class="token punctuation">,</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'prenextdis'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_prenextdis_sample <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> M4<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'timeInterval'</span><span class="token operator">=</span><span class="token string">'25'</span><span class="token punctuation">,</span><span class="token string">'displayWindowBegin'</span><span class="token operator">=</span><span class="token string">'0'</span><span class="token punctuation">,</span><span class="token string">'displayWindowEnd'</span><span class="token operator">=</span><span class="token string">'100'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>vehicle<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> M4<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'windowSize'</span><span class="token operator">=</span><span class="token string">'10'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>vehicle<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h3 id="change-points-function" tabindex="-1"><a class="header-anchor" href="#change-points-function"><span>Change Points Function</span></a></h3>`,2)),a("p",null,[s[70]||(s[70]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#time-series-processing"},{default:p(()=>s[69]||(s[69]=[n("Time-Series")])),_:1}),s[71]||(s[71]=n("."))]),s[142]||(s[142]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="data-quality-function-library" tabindex="-1"><a class="header-anchor" href="#data-quality-function-library"><span>DATA QUALITY FUNCTION LIBRARY</span></a></h2>`,2)),a("p",null,[s[73]||(s[73]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/Reference/UDF-Libraries.html#"},{default:p(()=>s[72]||(s[72]=[n("Operator-and-Expression")])),_:1}),s[74]||(s[74]=n("."))]),s[143]||(s[143]=a("h3",{id:"data-quality",tabindex:"-1"},[a("a",{class:"header-anchor",href:"#data-quality"},[a("span",null,"Data Quality")])],-1)),a("p",null,[s[76]||(s[76]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/UDF-Libraries.html#data-quality"},{default:p(()=>s[75]||(s[75]=[n("Data-Quality")])),_:1}),s[77]||(s[77]=n("."))]),s[144]||(s[144]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># Completeness</span></span> |
| <span class="line"><span class="token keyword">select</span> completeness<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"><span class="token keyword">select</span> completeness<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Consistency</span></span> |
| <span class="line"><span class="token keyword">select</span> consistency<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"><span class="token keyword">select</span> consistency<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Timeliness</span></span> |
| <span class="line"><span class="token keyword">select</span> timeliness<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"><span class="token keyword">select</span> timeliness<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Validity</span></span> |
| <span class="line"><span class="token keyword">select</span> Validity<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"><span class="token keyword">select</span> Validity<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Accuracy</span></span> |
| <span class="line"><span class="token keyword">select</span> Accuracy<span class="token punctuation">(</span>t1<span class="token punctuation">,</span>t2<span class="token punctuation">,</span>t3<span class="token punctuation">,</span>m1<span class="token punctuation">,</span>m2<span class="token punctuation">,</span>m3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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><h3 id="data-profiling" tabindex="-1"><a class="header-anchor" href="#data-profiling"><span>Data Profiling</span></a></h3>`,2)),a("p",null,[s[79]||(s[79]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/UDF-Libraries.html#data-profiling"},{default:p(()=>s[78]||(s[78]=[n("Data-Profiling")])),_:1}),s[80]||(s[80]=n("."))]),s[145]||(s[145]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># ACF</span></span> |
| <span class="line"><span class="token keyword">select</span> acf<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">05</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Distinct</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token keyword">distinct</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Histogram</span></span> |
| <span class="line"><span class="token keyword">select</span> histogram<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"min"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span><span class="token string">"max"</span><span class="token operator">=</span><span class="token string">"20"</span><span class="token punctuation">,</span><span class="token string">"count"</span><span class="token operator">=</span><span class="token string">"10"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Integral</span></span> |
| <span class="line"><span class="token keyword">select</span> integral<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">10</span></span> |
| <span class="line"><span class="token keyword">select</span> integral<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"unit"</span><span class="token operator">=</span><span class="token string">"1m"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">10</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># IntegralAvg</span></span> |
| <span class="line"><span class="token keyword">select</span> integralavg<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">10</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Mad</span></span> |
| <span class="line"><span class="token keyword">select</span> mad<span class="token punctuation">(</span>s0<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"><span class="token keyword">select</span> mad<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.01"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Median</span></span> |
| <span class="line"><span class="token keyword">select</span> median<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.01"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MinMax</span></span> |
| <span class="line"><span class="token keyword">select</span> minmax<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Mode</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token keyword">mode</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MvAvg</span></span> |
| <span class="line"><span class="token keyword">select</span> mvavg<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># PACF</span></span> |
| <span class="line"><span class="token keyword">select</span> pacf<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"lag"</span><span class="token operator">=</span><span class="token string">"5"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Percentile</span></span> |
| <span class="line"><span class="token keyword">select</span> percentile<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"rank"</span><span class="token operator">=</span><span class="token string">"0.2"</span><span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.01"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Quantile</span></span> |
| <span class="line"><span class="token keyword">select</span> quantile<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"rank"</span><span class="token operator">=</span><span class="token string">"0.2"</span><span class="token punctuation">,</span> <span class="token string">"K"</span><span class="token operator">=</span><span class="token string">"800"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Period</span></span> |
| <span class="line"><span class="token keyword">select</span> period<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d3</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># QLB</span></span> |
| <span class="line"><span class="token keyword">select</span> QLB<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Resample</span></span> |
| <span class="line"><span class="token keyword">select</span> resample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'every'</span><span class="token operator">=</span><span class="token string">'5m'</span><span class="token punctuation">,</span><span class="token string">'interp'</span><span class="token operator">=</span><span class="token string">'linear'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> resample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'every'</span><span class="token operator">=</span><span class="token string">'30m'</span><span class="token punctuation">,</span><span class="token string">'aggr'</span><span class="token operator">=</span><span class="token string">'first'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> resample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'every'</span><span class="token operator">=</span><span class="token string">'30m'</span><span class="token punctuation">,</span><span class="token string">'start'</span><span class="token operator">=</span><span class="token string">'2021-03-06 15:00:00'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Sample</span></span> |
| <span class="line"><span class="token keyword">select</span> sample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'reservoir'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> sample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'isometric'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Segment</span></span> |
| <span class="line"><span class="token keyword">select</span> segment<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Skew</span></span> |
| <span class="line"><span class="token keyword">select</span> skew<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Spline</span></span> |
| <span class="line"><span class="token keyword">select</span> spline<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"points"</span><span class="token operator">=</span><span class="token string">"151"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Spread</span></span> |
| <span class="line"><span class="token keyword">select</span> spread<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Stddev</span></span> |
| <span class="line"><span class="token keyword">select</span> stddev<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># ZScore</span></span> |
| <span class="line"><span class="token keyword">select</span> zscore<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 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 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 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 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 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 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 class="line-number"></div></div></div><h3 id="anomaly-detection" tabindex="-1"><a class="header-anchor" href="#anomaly-detection"><span>Anomaly Detection</span></a></h3>`,2)),a("p",null,[s[82]||(s[82]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/UDF-Libraries.html#anomaly-detection"},{default:p(()=>s[81]||(s[81]=[n("Anomaly-Detection")])),_:1}),s[83]||(s[83]=n("."))]),s[146]||(s[146]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># IQR</span></span> |
| <span class="line"><span class="token keyword">select</span> iqr<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># KSigma</span></span> |
| <span class="line"><span class="token keyword">select</span> ksigma<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"k"</span><span class="token operator">=</span><span class="token string">"1.0"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># LOF</span></span> |
| <span class="line"><span class="token keyword">select</span> lof<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span><span class="token operator"><</span><span class="token number">1000</span></span> |
| <span class="line"><span class="token keyword">select</span> lof<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"method"</span><span class="token operator">=</span><span class="token string">"series"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span><span class="token operator"><</span><span class="token number">1000</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MissDetect</span></span> |
| <span class="line"><span class="token keyword">select</span> missdetect<span class="token punctuation">(</span>s2<span class="token punctuation">,</span><span class="token string">'minlen'</span><span class="token operator">=</span><span class="token string">'10'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Range</span></span> |
| <span class="line"><span class="token keyword">select</span> range<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"lower_bound"</span><span class="token operator">=</span><span class="token string">"101.0"</span><span class="token punctuation">,</span><span class="token string">"upper_bound"</span><span class="token operator">=</span><span class="token string">"125.0"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># TwoSidedFilter</span></span> |
| <span class="line"><span class="token keyword">select</span> TwoSidedFilter<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">'len'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">,</span> <span class="token string">'threshold'</span><span class="token operator">=</span><span class="token string">'0.3'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Outlier</span></span> |
| <span class="line"><span class="token keyword">select</span> outlier<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"r"</span><span class="token operator">=</span><span class="token string">"5.0"</span><span class="token punctuation">,</span><span class="token string">"k"</span><span class="token operator">=</span><span class="token string">"4"</span><span class="token punctuation">,</span><span class="token string">"w"</span><span class="token operator">=</span><span class="token string">"10"</span><span class="token punctuation">,</span><span class="token string">"s"</span><span class="token operator">=</span><span class="token string">"5"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MasterTrain</span></span> |
| <span class="line"><span class="token keyword">select</span> MasterTrain<span class="token punctuation">(</span>lo<span class="token punctuation">,</span>la<span class="token punctuation">,</span>m_lo<span class="token punctuation">,</span>m_la<span class="token punctuation">,</span><span class="token string">'p'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'eta'</span><span class="token operator">=</span><span class="token string">'1.0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MasterDetect</span></span> |
| <span class="line"><span class="token keyword">select</span> MasterDetect<span class="token punctuation">(</span>lo<span class="token punctuation">,</span>la<span class="token punctuation">,</span>m_lo<span class="token punctuation">,</span>m_la<span class="token punctuation">,</span>model<span class="token punctuation">,</span><span class="token string">'output_type'</span><span class="token operator">=</span><span class="token string">'repair'</span><span class="token punctuation">,</span><span class="token string">'p'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'eta'</span><span class="token operator">=</span><span class="token string">'1.0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"><span class="token keyword">select</span> MasterDetect<span class="token punctuation">(</span>lo<span class="token punctuation">,</span>la<span class="token punctuation">,</span>m_lo<span class="token punctuation">,</span>m_la<span class="token punctuation">,</span>model<span class="token punctuation">,</span><span class="token string">'output_type'</span><span class="token operator">=</span><span class="token string">'anomaly'</span><span class="token punctuation">,</span><span class="token string">'p'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'eta'</span><span class="token operator">=</span><span class="token string">'1.0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 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 class="line-number"></div></div></div><h3 id="frequency-domain" tabindex="-1"><a class="header-anchor" href="#frequency-domain"><span>Frequency Domain</span></a></h3>`,2)),a("p",null,[s[85]||(s[85]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/UDF-Libraries.html#frequency-domain-analysis"},{default:p(()=>s[84]||(s[84]=[n("Frequency-Domain")])),_:1}),s[86]||(s[86]=n("."))]),s[147]||(s[147]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># Conv</span></span> |
| <span class="line"><span class="token keyword">select</span> conv<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Deconv</span></span> |
| <span class="line"><span class="token keyword">select</span> deconv<span class="token punctuation">(</span>s3<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"><span class="token keyword">select</span> deconv<span class="token punctuation">(</span>s3<span class="token punctuation">,</span>s2<span class="token punctuation">,</span><span class="token string">'result'</span><span class="token operator">=</span><span class="token string">'remainder'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># DWT</span></span> |
| <span class="line"><span class="token keyword">select</span> dwt<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"method"</span><span class="token operator">=</span><span class="token string">"haar"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># FFT</span></span> |
| <span class="line"><span class="token keyword">select</span> fft<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> fft<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'result'</span><span class="token operator">=</span><span class="token string">'real'</span><span class="token punctuation">,</span> <span class="token string">'compress'</span><span class="token operator">=</span><span class="token string">'0.99'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> fft<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'result'</span><span class="token operator">=</span><span class="token string">'imag'</span><span class="token punctuation">,</span><span class="token string">'compress'</span><span class="token operator">=</span><span class="token string">'0.99'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># HighPass</span></span> |
| <span class="line"><span class="token keyword">select</span> highpass<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'wpass'</span><span class="token operator">=</span><span class="token string">'0.45'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># IFFT</span></span> |
| <span class="line"><span class="token keyword">select</span> ifft<span class="token punctuation">(</span>re<span class="token punctuation">,</span> im<span class="token punctuation">,</span> <span class="token string">'interval'</span><span class="token operator">=</span><span class="token string">'1m'</span><span class="token punctuation">,</span> <span class="token string">'start'</span><span class="token operator">=</span><span class="token string">'2021-01-01 00:00:00'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># LowPass</span></span> |
| <span class="line"><span class="token keyword">select</span> lowpass<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'wpass'</span><span class="token operator">=</span><span class="token string">'0.45'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="data-matching" tabindex="-1"><a class="header-anchor" href="#data-matching"><span>Data Matching</span></a></h3>`,2)),a("p",null,[s[88]||(s[88]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/UDF-Libraries.html#data-matching"},{default:p(()=>s[87]||(s[87]=[n("Data-Matching")])),_:1}),s[89]||(s[89]=n("."))]),s[148]||(s[148]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># Cov</span></span> |
| <span class="line"><span class="token keyword">select</span> cov<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># DTW</span></span> |
| <span class="line"><span class="token keyword">select</span> dtw<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Pearson</span></span> |
| <span class="line"><span class="token keyword">select</span> pearson<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># PtnSym</span></span> |
| <span class="line"><span class="token keyword">select</span> ptnsym<span class="token punctuation">(</span>s4<span class="token punctuation">,</span> <span class="token string">'window'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">,</span> <span class="token string">'threshold'</span><span class="token operator">=</span><span class="token string">'0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># XCorr</span></span> |
| <span class="line"><span class="token keyword">select</span> xcorr<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">05</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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><h3 id="data-repairing" tabindex="-1"><a class="header-anchor" href="#data-repairing"><span>Data Repairing</span></a></h3>`,2)),a("p",null,[s[91]||(s[91]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/UDF-Libraries.html#data-repairing"},{default:p(()=>s[90]||(s[90]=[n("Data-Repairing")])),_:1}),s[92]||(s[92]=n("."))]),s[149]||(s[149]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># TimestampRepair</span></span> |
| <span class="line"><span class="token keyword">select</span> timestamprepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'interval'</span><span class="token operator">=</span><span class="token string">'10000'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"><span class="token keyword">select</span> timestamprepair<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># ValueFill</span></span> |
| <span class="line"><span class="token keyword">select</span> valuefill<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"><span class="token keyword">select</span> valuefill<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"method"</span><span class="token operator">=</span><span class="token string">"previous"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># ValueRepair</span></span> |
| <span class="line"><span class="token keyword">select</span> valuerepair<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"><span class="token keyword">select</span> valuerepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'LsGreedy'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MasterRepair</span></span> |
| <span class="line"><span class="token keyword">select</span> MasterRepair<span class="token punctuation">(</span>t1<span class="token punctuation">,</span>t2<span class="token punctuation">,</span>t3<span class="token punctuation">,</span>m1<span class="token punctuation">,</span>m2<span class="token punctuation">,</span>m3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># SeasonalRepair</span></span> |
| <span class="line"><span class="token keyword">select</span> seasonalrepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'period'</span><span class="token operator">=</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token number">2</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"><span class="token keyword">select</span> seasonalrepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'improved'</span><span class="token punctuation">,</span><span class="token string">'period'</span><span class="token operator">=</span><span class="token number">3</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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><h3 id="series-discovery" tabindex="-1"><a class="header-anchor" href="#series-discovery"><span>Series Discovery</span></a></h3>`,2)),a("p",null,[s[94]||(s[94]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/UDF-Libraries.html#series-discovery"},{default:p(()=>s[93]||(s[93]=[n("Series-Discovery")])),_:1}),s[95]||(s[95]=n("."))]),s[150]||(s[150]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># ConsecutiveSequences</span></span> |
| <span class="line"><span class="token keyword">select</span> consecutivesequences<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">,</span><span class="token string">'gap'</span><span class="token operator">=</span><span class="token string">'5m'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> consecutivesequences<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># ConsecutiveWindows</span></span> |
| <span class="line"><span class="token keyword">select</span> consecutivewindows<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">,</span><span class="token string">'length'</span><span class="token operator">=</span><span class="token string">'10m'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h3 id="machine-learning" tabindex="-1"><a class="header-anchor" href="#machine-learning"><span>Machine Learning</span></a></h3>`,2)),a("p",null,[s[97]||(s[97]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/UDF-Libraries.html#machine-learning"},{default:p(()=>s[96]||(s[96]=[n("Machine-Learning")])),_:1}),s[98]||(s[98]=n("."))]),s[151]||(s[151]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># AR</span></span> |
| <span class="line"><span class="token keyword">select</span> ar<span class="token punctuation">(</span>s0<span class="token punctuation">,</span><span class="token string">"p"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d0</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Representation</span></span> |
| <span class="line"><span class="token keyword">select</span> representation<span class="token punctuation">(</span>s0<span class="token punctuation">,</span><span class="token string">"tb"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">,</span><span class="token string">"vb"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d0</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># RM</span></span> |
| <span class="line"><span class="token keyword">select</span> rm<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> s1<span class="token punctuation">,</span><span class="token string">"tb"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">,</span><span class="token string">"vb"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d0</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h2 id="lambda-expression" tabindex="-1"><a class="header-anchor" href="#lambda-expression"><span>LAMBDA EXPRESSION</span></a></h2>`,2)),a("p",null,[s[100]||(s[100]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#lambda-expression"},{default:p(()=>s[99]||(s[99]=[n("Lambda")])),_:1}),s[101]||(s[101]=n("."))]),s[152]||(s[152]=o('<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {x + x}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl1<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {x * 3}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl2<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {x * x}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl3<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {multiply(x, 100)}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl4<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> st<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'(x, y) -> {x + y}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl5<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> st<span class="token punctuation">,</span> str<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'(x, y, z) -> {x + y + z}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl6 <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span><span class="token identifier"><span class="token punctuation">`</span><span class="token punctuation">`</span></span><span class="token punctuation">`</span></span>\n<span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="conditional-expression" tabindex="-1"><a class="header-anchor" href="#conditional-expression"><span>CONDITIONAL EXPRESSION</span></a></h2>',2)),a("p",null,[s[103]||(s[103]=n("For details and examples, see the document ")),t(e,{to:"/UserGuide/latest/Reference/Function-and-Expression.html#conditional-expressions"},{default:p(()=>s[102]||(s[102]=[n("Conditional Expressions")])),_:1}),s[104]||(s[104]=n("."))]),s[153]||(s[153]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> T<span class="token punctuation">,</span> P<span class="token punctuation">,</span> <span class="token keyword">case</span></span> |
| <span class="line"><span class="token keyword">when</span> <span class="token number">1000</span><span class="token operator"><</span>T <span class="token operator">and</span> T<span class="token operator"><</span><span class="token number">1050</span> <span class="token operator">and</span> <span class="token number">1000000</span><span class="token operator"><</span>P <span class="token operator">and</span> P<span class="token operator"><</span><span class="token number">1100000</span> <span class="token keyword">then</span> <span class="token string">"good!"</span></span> |
| <span class="line"><span class="token keyword">when</span> T<span class="token operator"><=</span><span class="token number">1000</span> <span class="token operator">or</span> T<span class="token operator">>=</span><span class="token number">1050</span> <span class="token keyword">then</span> <span class="token string">"bad temperature"</span></span> |
| <span class="line"><span class="token keyword">when</span> P<span class="token operator"><=</span><span class="token number">1000000</span> <span class="token operator">or</span> P<span class="token operator">>=</span><span class="token number">1100000</span> <span class="token keyword">then</span> <span class="token string">"bad pressure"</span></span> |
| <span class="line"><span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">\`</span>result<span class="token punctuation">\`</span></span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>test1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> str<span class="token punctuation">,</span> <span class="token keyword">case</span></span> |
| <span class="line"><span class="token keyword">when</span> str <span class="token operator">like</span> <span class="token string">"%cc%"</span> <span class="token keyword">then</span> <span class="token string">"has cc"</span></span> |
| <span class="line"><span class="token keyword">when</span> str <span class="token operator">like</span> <span class="token string">"%dd%"</span> <span class="token keyword">then</span> <span class="token string">"has dd"</span></span> |
| <span class="line"><span class="token keyword">else</span> <span class="token string">"no cc and dd"</span> <span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">\`</span>result<span class="token punctuation">\`</span></span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>test2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span></span> |
| <span class="line"><span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> x<span class="token operator"><=</span><span class="token number">1</span> <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">\`</span>(-∞,1]<span class="token punctuation">\`</span></span><span class="token punctuation">,</span></span> |
| <span class="line"><span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> <span class="token number">1</span><span class="token operator"><</span>x <span class="token operator">and</span> x<span class="token operator"><=</span><span class="token number">3</span> <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">\`</span>(1,3]<span class="token punctuation">\`</span></span><span class="token punctuation">,</span></span> |
| <span class="line"><span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> <span class="token number">3</span><span class="token operator"><</span>x <span class="token operator">and</span> x<span class="token operator"><=</span><span class="token number">7</span> <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">\`</span>(3,7]<span class="token punctuation">\`</span></span><span class="token punctuation">,</span></span> |
| <span class="line"><span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> <span class="token number">7</span><span class="token operator"><</span>x <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">\`</span>(7,+∞)<span class="token punctuation">\`</span></span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>test3</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> x<span class="token punctuation">,</span> <span class="token keyword">case</span> x <span class="token keyword">when</span> <span class="token number">1</span> <span class="token keyword">then</span> <span class="token string">"one"</span> <span class="token keyword">when</span> <span class="token number">2</span> <span class="token keyword">then</span> <span class="token string">"two"</span> <span class="token keyword">else</span> <span class="token string">"other"</span> <span class="token keyword">end</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test4</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> x<span class="token punctuation">,</span> <span class="token keyword">case</span> x <span class="token keyword">when</span> <span class="token number">1</span> <span class="token keyword">then</span> <span class="token boolean">true</span> <span class="token keyword">when</span> <span class="token number">2</span> <span class="token keyword">then</span> <span class="token boolean">false</span> <span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">\`</span>result<span class="token punctuation">\`</span></span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test4</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> x<span class="token punctuation">,</span> <span class="token keyword">case</span> x</span> |
| <span class="line"><span class="token keyword">when</span> <span class="token number">1</span> <span class="token keyword">then</span> <span class="token number">1</span></span> |
| <span class="line"><span class="token keyword">when</span> <span class="token number">2</span> <span class="token keyword">then</span> <span class="token number">222222222222222</span></span> |
| <span class="line"><span class="token keyword">when</span> <span class="token number">3</span> <span class="token keyword">then</span> <span class="token number">3.3</span></span> |
| <span class="line"><span class="token keyword">when</span> <span class="token number">4</span> <span class="token keyword">then</span> <span class="token number">4.4444444444444</span></span> |
| <span class="line"><span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">\`</span>result<span class="token punctuation">\`</span></span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>test4</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="trigger" tabindex="-1"><a class="header-anchor" href="#trigger"><span>TRIGGER</span></a></h2>`,2)),a("p",null,[s[106]||(s[106]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Database-Programming.html"},{default:p(()=>s[105]||(s[105]=[n("Database-Programming")])),_:1}),s[107]||(s[107]=n("."))]),s[154]||(s[154]=o(`<h3 id="create-trigger" tabindex="-1"><a class="header-anchor" href="#create-trigger"><span>Create Trigger</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment">// Create Trigger</span></span> |
| <span class="line">createTrigger</span> |
| <span class="line"> : <span class="token keyword">CREATE</span> triggerType <span class="token keyword">TRIGGER</span> triggerName<span class="token operator">=</span>identifier triggerEventClause <span class="token keyword">ON</span> pathPattern <span class="token keyword">AS</span> className<span class="token operator">=</span>STRING_LITERAL uriClause? triggerAttributeClause?</span> |
| <span class="line"> <span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">triggerType</span> |
| <span class="line"> : STATELESS <span class="token operator">|</span> STATEFUL</span> |
| <span class="line"> <span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">triggerEventClause</span> |
| <span class="line"> : <span class="token punctuation">(</span>BEFORE <span class="token operator">|</span> <span class="token keyword">AFTER</span><span class="token punctuation">)</span> <span class="token keyword">INSERT</span></span> |
| <span class="line"> <span class="token punctuation">;</span></span> |
| <span class="line"> </span> |
| <span class="line">uriClause</span> |
| <span class="line"> : <span class="token keyword">USING</span> URI uri</span> |
| <span class="line"> <span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">uri</span> |
| <span class="line"> : STRING_LITERAL</span> |
| <span class="line"> <span class="token punctuation">;</span></span> |
| <span class="line"> </span> |
| <span class="line">triggerAttributeClause</span> |
| <span class="line"> : <span class="token keyword">WITH</span> LR_BRACKET triggerAttribute <span class="token punctuation">(</span>COMMA triggerAttribute<span class="token punctuation">)</span><span class="token operator">*</span> RR_BRACKET</span> |
| <span class="line"> <span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line">triggerAttribute</span> |
| <span class="line"> : <span class="token keyword">key</span><span class="token operator">=</span>attributeKey operator_eq <span class="token keyword">value</span><span class="token operator">=</span>attributeValue</span> |
| <span class="line"> <span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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 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 class="line-number"></div></div></div><h3 id="drop-trigger" tabindex="-1"><a class="header-anchor" href="#drop-trigger"><span>Drop Trigger</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment">// Drop Trigger</span></span> |
| <span class="line">dropTrigger</span> |
| <span class="line"> : <span class="token keyword">DROP</span> <span class="token keyword">TRIGGER</span> triggerName<span class="token operator">=</span>identifier</span> |
| <span class="line"><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-trigger" tabindex="-1"><a class="header-anchor" href="#show-trigger"><span>Show Trigger</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">SHOW</span> TRIGGERS</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="continuous-query-cq" tabindex="-1"><a class="header-anchor" href="#continuous-query-cq"><span>CONTINUOUS QUERY (CQ)</span></a></h2>`,7)),a("p",null,[s[109]||(s[109]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Operator-and-Expression.html"},{default:p(()=>s[108]||(s[108]=[n("Operator-and-Expression")])),_:1}),s[110]||(s[110]=n("."))]),s[155]||(s[155]=o(`<div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> <span class="token punctuation">(</span>CONTINUOUS QUERY <span class="token operator">|</span> CQ<span class="token punctuation">)</span> <span class="token operator"><</span>cq_id<span class="token operator">></span> </span> |
| <span class="line"><span class="token punctuation">[</span>RESAMPLE </span> |
| <span class="line"> <span class="token punctuation">[</span>EVERY <span class="token operator"><</span>every_interval<span class="token operator">></span><span class="token punctuation">]</span> </span> |
| <span class="line"> <span class="token punctuation">[</span>BOUNDARY <span class="token operator"><</span>execution_boundary_time<span class="token operator">></span><span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span>RANGE <span class="token operator"><</span>start_time_offset<span class="token operator">></span><span class="token punctuation">[</span><span class="token punctuation">,</span> end_time_offset<span class="token punctuation">]</span><span class="token punctuation">]</span> </span> |
| <span class="line"><span class="token punctuation">]</span></span> |
| <span class="line"><span class="token punctuation">[</span>TIMEOUT POLICY BLOCKED<span class="token operator">|</span><span class="token keyword">DISCARD</span><span class="token punctuation">]</span></span> |
| <span class="line"><span class="token keyword">BEGIN</span></span> |
| <span class="line"> <span class="token keyword">SELECT</span> CLAUSE</span> |
| <span class="line"> <span class="token keyword">INTO</span> CLAUSE</span> |
| <span class="line"> <span class="token keyword">FROM</span> CLAUSE</span> |
| <span class="line"> <span class="token punctuation">[</span><span class="token keyword">WHERE</span> CLAUSE<span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span><span class="token keyword">GROUP</span> <span class="token keyword">BY</span><span class="token punctuation">(</span><span class="token operator"><</span>group_by_interval<span class="token operator">></span><span class="token punctuation">[</span><span class="token punctuation">,</span> <span class="token operator"><</span>sliding_step<span class="token operator">></span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token punctuation">[</span><span class="token punctuation">,</span> <span class="token keyword">level</span> <span class="token operator">=</span> <span class="token operator"><</span><span class="token keyword">level</span><span class="token operator">></span><span class="token punctuation">]</span><span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span><span class="token keyword">HAVING</span> CLAUSE<span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span>FILL <span class="token punctuation">(</span>{PREVIOUS <span class="token operator">|</span> LINEAR <span class="token operator">|</span> constant} <span class="token punctuation">(</span><span class="token punctuation">,</span> <span class="token keyword">interval</span><span class="token operator">=</span>DURATION_LITERAL<span class="token punctuation">)</span>?<span class="token punctuation">)</span><span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span><span class="token keyword">LIMIT</span> rowLimit <span class="token keyword">OFFSET</span> rowOffset<span class="token punctuation">]</span></span> |
| <span class="line"> <span class="token punctuation">[</span>ALIGN <span class="token keyword">BY</span> DEVICE<span class="token punctuation">]</span></span> |
| <span class="line"><span class="token keyword">END</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 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><h3 id="configuring-execution-intervals" tabindex="-1"><a class="header-anchor" href="#configuring-execution-intervals"><span>Configuring execution intervals</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> CONTINUOUS QUERY cq1</span> |
| <span class="line">RESAMPLE EVERY <span class="token number">20</span>s</span> |
| <span class="line"><span class="token keyword">BEGIN</span></span> |
| <span class="line"><span class="token keyword">SELECT</span> max_value<span class="token punctuation">(</span>temperature<span class="token punctuation">)</span></span> |
| <span class="line"> <span class="token keyword">INTO</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt01<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span></span> |
| <span class="line"> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line"> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span><span class="token punctuation">(</span><span class="token number">10</span>s<span class="token punctuation">)</span></span> |
| <span class="line"><span class="token keyword">END</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h3 id="configuring-time-range-for-resampling" tabindex="-1"><a class="header-anchor" href="#configuring-time-range-for-resampling"><span>Configuring time range for resampling</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> CONTINUOUS QUERY cq2</span> |
| <span class="line">RESAMPLE RANGE <span class="token number">40</span>s</span> |
| <span class="line"><span class="token keyword">BEGIN</span></span> |
| <span class="line"> <span class="token keyword">SELECT</span> max_value<span class="token punctuation">(</span>temperature<span class="token punctuation">)</span></span> |
| <span class="line"> <span class="token keyword">INTO</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt01<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span></span> |
| <span class="line"> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line"> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span><span class="token punctuation">(</span><span class="token number">10</span>s<span class="token punctuation">)</span></span> |
| <span class="line"><span class="token keyword">END</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h3 id="configuring-execution-intervals-and-cq-time-ranges" tabindex="-1"><a class="header-anchor" href="#configuring-execution-intervals-and-cq-time-ranges"><span>Configuring execution intervals and CQ time ranges</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> CONTINUOUS QUERY cq3</span> |
| <span class="line">RESAMPLE EVERY <span class="token number">20</span>s RANGE <span class="token number">40</span>s</span> |
| <span class="line"><span class="token keyword">BEGIN</span></span> |
| <span class="line"> <span class="token keyword">SELECT</span> max_value<span class="token punctuation">(</span>temperature<span class="token punctuation">)</span></span> |
| <span class="line"> <span class="token keyword">INTO</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt01<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span></span> |
| <span class="line"> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line"> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span><span class="token punctuation">(</span><span class="token number">10</span>s<span class="token punctuation">)</span></span> |
| <span class="line"> FILL<span class="token punctuation">(</span><span class="token number">100.0</span><span class="token punctuation">)</span></span> |
| <span class="line"><span class="token keyword">END</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h3 id="configuring-end-time-offset-for-cq-time-range" tabindex="-1"><a class="header-anchor" href="#configuring-end-time-offset-for-cq-time-range"><span>Configuring end_time_offset for CQ time range</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> CONTINUOUS QUERY cq4</span> |
| <span class="line">RESAMPLE EVERY <span class="token number">20</span>s RANGE <span class="token number">40</span>s<span class="token punctuation">,</span> <span class="token number">20</span>s</span> |
| <span class="line"><span class="token keyword">BEGIN</span></span> |
| <span class="line"> <span class="token keyword">SELECT</span> max_value<span class="token punctuation">(</span>temperature<span class="token punctuation">)</span></span> |
| <span class="line"> <span class="token keyword">INTO</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt01<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt02<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">(</span>temperature_max<span class="token punctuation">)</span></span> |
| <span class="line"> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line"> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span><span class="token punctuation">(</span><span class="token number">10</span>s<span class="token punctuation">)</span></span> |
| <span class="line"> FILL<span class="token punctuation">(</span><span class="token number">100.0</span><span class="token punctuation">)</span></span> |
| <span class="line"><span class="token keyword">END</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h3 id="cq-without-group-by-clause" tabindex="-1"><a class="header-anchor" href="#cq-without-group-by-clause"><span>CQ without group by clause</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> CONTINUOUS QUERY cq5</span> |
| <span class="line">RESAMPLE EVERY <span class="token number">20</span>s</span> |
| <span class="line"><span class="token keyword">BEGIN</span></span> |
| <span class="line"> <span class="token keyword">SELECT</span> temperature <span class="token operator">+</span> <span class="token number">1</span></span> |
| <span class="line"> <span class="token keyword">INTO</span> root<span class="token punctuation">.</span>precalculated_sg<span class="token punctuation">.</span>::<span class="token punctuation">(</span>temperature<span class="token punctuation">)</span></span> |
| <span class="line"> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line"> align <span class="token keyword">by</span> device</span> |
| <span class="line"><span class="token keyword">END</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h3 id="cq-management" tabindex="-1"><a class="header-anchor" href="#cq-management"><span>CQ Management</span></a></h3><h4 id="listing-continuous-queries" tabindex="-1"><a class="header-anchor" href="#listing-continuous-queries"><span>Listing continuous queries</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">SHOW</span> <span class="token punctuation">(</span>CONTINUOUS QUERIES <span class="token operator">|</span> CQS<span class="token punctuation">)</span> </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="dropping-continuous-queries" tabindex="-1"><a class="header-anchor" href="#dropping-continuous-queries"><span>Dropping continuous queries</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">DROP</span> <span class="token punctuation">(</span>CONTINUOUS QUERY <span class="token operator">|</span> CQ<span class="token punctuation">)</span> <span class="token operator"><</span>cq_id<span class="token operator">></span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="altering-continuous-queries" tabindex="-1"><a class="header-anchor" href="#altering-continuous-queries"><span>Altering continuous queries</span></a></h4><p>CQs can't be altered once they're created. To change a CQ, you must <code>DROP</code> and re<code>CREATE</code> it with the updated settings.</p><h2 id="user-defined-function-udf" tabindex="-1"><a class="header-anchor" href="#user-defined-function-udf"><span>USER-DEFINED FUNCTION (UDF)</span></a></h2>`,19)),a("p",null,[s[112]||(s[112]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/Reference/UDF-Libraries.html"},{default:p(()=>s[111]||(s[111]=[n("Operator-and-Expression")])),_:1}),s[113]||(s[113]=n("."))]),s[156]||(s[156]=o(`<h3 id="udf-registration" tabindex="-1"><a class="header-anchor" href="#udf-registration"><span>UDF Registration</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> <span class="token keyword">FUNCTION</span> <span class="token operator"><</span>UDF<span class="token operator">-</span>NAME<span class="token operator">></span> <span class="token keyword">AS</span> <span class="token operator"><</span>UDF<span class="token operator">-</span>CLASS<span class="token operator">-</span><span class="token keyword">FULL</span><span class="token operator">-</span>PATHNAME<span class="token operator">></span> <span class="token punctuation">(</span><span class="token keyword">USING</span> URI URI<span class="token operator">-</span>STRING<span class="token punctuation">)</span>?</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="udf-deregistration" tabindex="-1"><a class="header-anchor" href="#udf-deregistration"><span>UDF Deregistration</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">DROP</span> <span class="token keyword">FUNCTION</span> <span class="token operator"><</span>UDF<span class="token operator">-</span>NAME<span class="token operator">></span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="udf-queries" tabindex="-1"><a class="header-anchor" href="#udf-queries"><span>UDF Queries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">SELECT</span> example<span class="token punctuation">(</span><span class="token operator">*</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">SELECT</span> example<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token operator">*</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">SELECT</span> example<span class="token punctuation">(</span><span class="token operator">*</span><span class="token punctuation">,</span> <span class="token operator">*</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">SELECT</span> example<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'key1'</span><span class="token operator">=</span><span class="token string">'value1'</span><span class="token punctuation">,</span> <span class="token string">'key2'</span><span class="token operator">=</span><span class="token string">'value2'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> example<span class="token punctuation">(</span><span class="token operator">*</span><span class="token punctuation">,</span> <span class="token string">'key3'</span><span class="token operator">=</span><span class="token string">'value3'</span><span class="token punctuation">)</span> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">SELECT</span> example<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> <span class="token string">'key1'</span><span class="token operator">=</span><span class="token string">'value1'</span><span class="token punctuation">,</span> <span class="token string">'key2'</span><span class="token operator">=</span><span class="token string">'value2'</span><span class="token punctuation">)</span> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">SELECT</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> example<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">SELECT</span> <span class="token operator">*</span><span class="token punctuation">,</span> example<span class="token punctuation">(</span><span class="token operator">*</span><span class="token punctuation">)</span> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">DISABLE</span> ALIGN<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">SELECT</span> s1 <span class="token operator">*</span> example<span class="token punctuation">(</span><span class="token operator">*</span> <span class="token operator">/</span> s1 <span class="token operator">+</span> s2<span class="token punctuation">)</span> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">SELECT</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">+</span> example<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span><span class="token punctuation">,</span> s1 <span class="token operator">-</span> example<span class="token punctuation">(</span>s1 <span class="token operator">+</span> example<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token operator">/</span> s2<span class="token punctuation">)</span> <span class="token keyword">FROM</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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 class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-all-registered-udfs" tabindex="-1"><a class="header-anchor" href="#show-all-registered-udfs"><span>Show All Registered UDFs</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">SHOW</span> FUNCTIONS</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="administration-management" tabindex="-1"><a class="header-anchor" href="#administration-management"><span>ADMINISTRATION MANAGEMENT</span></a></h2>`,9)),a("p",null,[s[115]||(s[115]=n("For more details, see document ")),t(e,{to:"/UserGuide/latest/User-Manual/Operator-and-Expression.html"},{default:p(()=>s[114]||(s[114]=[n("Operator-and-Expression")])),_:1}),s[116]||(s[116]=n("."))]),s[157]||(s[157]=o(`<h3 id="sql-statements" tabindex="-1"><a class="header-anchor" href="#sql-statements"><span>SQL Statements</span></a></h3><ul><li>Create user (Requires MANAGE_USER permission)</li></ul><div class="language-SQL line-numbers-mode" data-highlighter="prismjs" data-ext="SQL" data-title="SQL"><pre><code><span class="line">CREATE USER <userName> <password></span> |
| <span class="line">eg: CREATE USER user1 'passwd'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Delete user (Requires MANAGE_USER permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">DROP</span> <span class="token keyword">USER</span> <span class="token operator"><</span>userName<span class="token operator">></span></span> |
| <span class="line">eg: <span class="token keyword">DROP</span> <span class="token keyword">USER</span> user1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Create role (Requires MANAGE_ROLE permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> ROLE <span class="token operator"><</span>roleName<span class="token operator">></span></span> |
| <span class="line">eg: <span class="token keyword">CREATE</span> ROLE role1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Delete role (Requires MANAGE_ROLE permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">DROP</span> ROLE <span class="token operator"><</span>roleName<span class="token operator">></span></span> |
| <span class="line">eg: <span class="token keyword">DROP</span> ROLE role1 </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Grant role to user (Requires MANAGE_ROLE permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">GRANT</span> ROLE <span class="token operator"><</span>ROLENAME<span class="token operator">></span> <span class="token keyword">TO</span> <span class="token operator"><</span>USERNAME<span class="token operator">></span></span> |
| <span class="line">eg: <span class="token keyword">GRANT</span> ROLE admin <span class="token keyword">TO</span> user1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Revoke role from user(Requires MANAGE_ROLE permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">REVOKE</span> ROLE <span class="token operator"><</span>ROLENAME<span class="token operator">></span> <span class="token keyword">FROM</span> <span class="token operator"><</span><span class="token keyword">USER</span><span class="token operator">></span></span> |
| <span class="line">eg: <span class="token keyword">REVOKE</span> ROLE admin <span class="token keyword">FROM</span> user1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>List all user (Requires MANAGE_USER permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">LIST <span class="token keyword">USER</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>List all role (Requires MANAGE_ROLE permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">LIST ROLE</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>List all users granted specific role.（Requires MANAGE_USER permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">LIST <span class="token keyword">USER</span> <span class="token keyword">OF</span> ROLE <span class="token operator"><</span>roleName<span class="token operator">></span></span> |
| <span class="line">eg: LIST <span class="token keyword">USER</span> <span class="token keyword">OF</span> ROLE roleuser</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>List all role granted to specific user.</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">LIST ROLE <span class="token keyword">OF</span> <span class="token keyword">USER</span> <span class="token operator"><</span>username<span class="token operator">></span> </span> |
| <span class="line">eg: LIST ROLE <span class="token keyword">OF</span> <span class="token keyword">USER</span> tempuser</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>List all privileges of user</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">LIST <span class="token keyword">PRIVILEGES</span> <span class="token keyword">OF</span> <span class="token keyword">USER</span> <span class="token operator"><</span>username<span class="token operator">></span><span class="token punctuation">;</span></span> |
| <span class="line">eg: LIST <span class="token keyword">PRIVILEGES</span> <span class="token keyword">OF</span> <span class="token keyword">USER</span> tempuser<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>List all privileges of role</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">LIST <span class="token keyword">PRIVILEGES</span> <span class="token keyword">OF</span> ROLE <span class="token operator"><</span>roleName<span class="token operator">></span><span class="token punctuation">;</span></span> |
| <span class="line">eg: LIST <span class="token keyword">PRIVILEGES</span> <span class="token keyword">OF</span> ROLE actor<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Update password</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">ALTER</span> <span class="token keyword">USER</span> <span class="token operator"><</span>username<span class="token operator">></span> <span class="token keyword">SET</span> PASSWORD <span class="token operator"><</span>password<span class="token operator">></span><span class="token punctuation">;</span></span> |
| <span class="line">eg: <span class="token keyword">ALTER</span> <span class="token keyword">USER</span> tempuser <span class="token keyword">SET</span> PASSWORD <span class="token string">'newpwd'</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="authorization-and-deauthorization" tabindex="-1"><a class="header-anchor" href="#authorization-and-deauthorization"><span>Authorization and Deauthorization</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">GRANT</span> <span class="token operator"><</span><span class="token keyword">PRIVILEGES</span><span class="token operator">></span> <span class="token keyword">ON</span> <span class="token operator"><</span>PATHS<span class="token operator">></span> <span class="token keyword">TO</span> ROLE<span class="token operator">/</span><span class="token keyword">USER</span> <span class="token operator"><</span>NAME<span class="token operator">></span> <span class="token punctuation">[</span><span class="token keyword">WITH</span> <span class="token keyword">GRANT</span> <span class="token keyword">OPTION</span><span class="token punctuation">]</span>；</span> |
| <span class="line">eg: <span class="token keyword">GRANT</span> <span class="token keyword">READ</span> <span class="token keyword">ON</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">TO</span> ROLE role1<span class="token punctuation">;</span></span> |
| <span class="line">eg: <span class="token keyword">GRANT</span> READ_DATA<span class="token punctuation">,</span> WRITE_DATA <span class="token keyword">ON</span> root<span class="token punctuation">.</span>t1<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">TO</span> <span class="token keyword">USER</span> user1<span class="token punctuation">;</span></span> |
| <span class="line">eg: <span class="token keyword">GRANT</span> READ_DATA<span class="token punctuation">,</span> WRITE_DATA <span class="token keyword">ON</span> root<span class="token punctuation">.</span>t1<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span><span class="token punctuation">,</span>root<span class="token punctuation">.</span>t2<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">TO</span> <span class="token keyword">USER</span> user1<span class="token punctuation">;</span></span> |
| <span class="line">eg: <span class="token keyword">GRANT</span> MANAGE_ROLE <span class="token keyword">ON</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">TO</span> <span class="token keyword">USER</span> user1 <span class="token keyword">WITH</span> <span class="token keyword">GRANT</span> <span class="token keyword">OPTION</span><span class="token punctuation">;</span></span> |
| <span class="line">eg: <span class="token keyword">GRANT</span> <span class="token keyword">ALL</span> <span class="token keyword">ON</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">TO</span> <span class="token keyword">USER</span> user1 <span class="token keyword">WITH</span> <span class="token keyword">GRANT</span> <span class="token keyword">OPTION</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">REVOKE</span> <span class="token operator"><</span><span class="token keyword">PRIVILEGES</span><span class="token operator">></span> <span class="token keyword">ON</span> <span class="token operator"><</span>PATHS<span class="token operator">></span> <span class="token keyword">FROM</span> ROLE<span class="token operator">/</span><span class="token keyword">USER</span> <span class="token operator"><</span>NAME<span class="token operator">></span><span class="token punctuation">;</span></span> |
| <span class="line">eg: <span class="token keyword">REVOKE</span> <span class="token keyword">READ</span> <span class="token keyword">ON</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">FROM</span> ROLE role1<span class="token punctuation">;</span></span> |
| <span class="line">eg: <span class="token keyword">REVOKE</span> READ_DATA<span class="token punctuation">,</span> WRITE_DATA <span class="token keyword">ON</span> root<span class="token punctuation">.</span>t1<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">FROM</span> <span class="token keyword">USER</span> user1<span class="token punctuation">;</span></span> |
| <span class="line">eg: <span class="token keyword">REVOKE</span> READ_DATA<span class="token punctuation">,</span> WRITE_DATA <span class="token keyword">ON</span> root<span class="token punctuation">.</span>t1<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span><span class="token punctuation">,</span> root<span class="token punctuation">.</span>t2<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">FROM</span> <span class="token keyword">USER</span> user1<span class="token punctuation">;</span></span> |
| <span class="line">eg: <span class="token keyword">REVOKE</span> MANAGE_ROLE <span class="token keyword">ON</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">FROM</span> <span class="token keyword">USER</span> user1<span class="token punctuation">;</span></span> |
| <span class="line">eg: <span class="token keyword">REVOKE</span> <span class="token keyword">ALL</span> <span class="token keyword">ON</span> ROOT<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">FROM</span> <span class="token keyword">USER</span> user1<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><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><h4 id="delete-time-partition-experimental-1" tabindex="-1"><a class="header-anchor" href="#delete-time-partition-experimental-1"><span>Delete Time Partition (experimental)</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">Eg: IoTDB > DELETE PARTITION root.ln 0,1,2</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="continuous-query-cq-1" tabindex="-1"><a class="header-anchor" href="#continuous-query-cq-1"><span>Continuous Query,CQ</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO temperature_max FROM root.ln.*.* GROUP BY time(10s) END</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="maintenance-command" tabindex="-1"><a class="header-anchor" href="#maintenance-command"><span>Maintenance Command</span></a></h4><ul><li>FLUSH</li></ul><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">Eg: IoTDB > flush</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>MERGE</li></ul><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">Eg: IoTDB > MERGE</span> |
| <span class="line">Eg: IoTDB > FULL MERGE</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>CLEAR CACHE</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">Eg: IoTDB <span class="token operator">></span> CLEAR CACHE</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>SET SYSTEM TO READONLY / WRITABLE</li></ul><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">Eg: IoTDB > SET SYSTEM TO READONLY / WRITABLE</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Query abort</li></ul><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">Eg: IoTDB > KILL QUERY 1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div>`,45))])}const v=l(u,[["render",k],["__file","SQL-Manual.html.vue"]]),b=JSON.parse('{"path":"/UserGuide/latest/SQL-Manual/SQL-Manual.html","title":"SQL Manual","lang":"en-US","frontmatter":{"description":"SQL Manual DATABASE MANAGEMENT For more details, see document . 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