| import{_ as r}from"./模板-D99xzuGy.js";import{_ as t}from"./template-DPwEzAzX.js";import{_ as c,c as B,b as p,d as n,e as a,a as o,w as e,r as i,o as y}from"./app-pmkzp6TS.js";const d={};function A(D,s){const l=i("RouteLink");return y(),B("div",null,[s[53]||(s[53]=p(`<h1 id="sql手册" tabindex="-1"><a class="header-anchor" href="#sql手册"><span>SQL手册</span></a></h1><h2 id="_1-元数据操作" tabindex="-1"><a class="header-anchor" href="#_1-元数据操作"><span>1. 元数据操作</span></a></h2><h3 id="_1-1-数据库管理" tabindex="-1"><a class="header-anchor" href="#_1-1-数据库管理"><span>1.1 数据库管理</span></a></h3><h4 id="创建数据库" tabindex="-1"><a class="header-anchor" href="#创建数据库"><span>创建数据库</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#C678DD;"> DATABASE</span><span style="color:#61AFEF;"> root</span><span style="color:#ABB2BF;">.ln;</span></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="查看数据库" tabindex="-1"><a class="header-anchor" href="#查看数据库"><span>查看数据库</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">show databases;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show databases </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.*;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show databases </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.**;</span></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="删除数据库" tabindex="-1"><a class="header-anchor" href="#删除数据库"><span>删除数据库</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">DELETE</span><span style="color:#C678DD;"> DATABASE</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">DELETE</span><span style="color:#C678DD;"> DATABASE</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">DELETE</span><span style="color:#C678DD;"> DATABASE</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.**;</span></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="统计数据库数量" tabindex="-1"><a class="header-anchor" href="#统计数据库数量"><span>统计数据库数量</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">count databases;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">count databases </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.*;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">count databases </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.*;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">count databases </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">;</span></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="_1-2-时间序列管理" tabindex="-1"><a class="header-anchor" href="#_1-2-时间序列管理"><span>1.2 时间序列管理</span></a></h3><h4 id="创建时间序列" tabindex="-1"><a class="header-anchor" href="#创建时间序列"><span>创建时间序列</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.temperature </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.hardware </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">TEXT</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.temperature </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">;</span></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>简化版</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> BOOLEAN</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.temperature </span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.hardware </span><span style="color:#C678DD;">TEXT</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> BOOLEAN</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> BOOLEAN</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.temperature </span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">;</span></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>错误提示</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> WITH</span><span style="color:#ABB2BF;"> DATATYPE</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> error: </span><span style="color:#C678DD;">encoding</span><span style="color:#ABB2BF;"> TS_2DIFF does </span><span style="color:#C678DD;">not</span><span style="color:#ABB2BF;"> support </span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">;</span></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><h4 id="创建对齐时间序列" tabindex="-1"><a class="header-anchor" href="#创建对齐时间序列"><span>创建对齐时间序列</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> ALIGNED TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">GPS</span><span style="color:#ABB2BF;">(latitude </span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">, longitude </span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">);</span></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="删除时间序列" tabindex="-1"><a class="header-anchor" href="#删除时间序列"><span>删除时间序列</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">delete</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">delete</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.temperature, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.hardware;</span></span> |
| <span class="line"><span style="color:#C678DD;">delete</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.wf02.*;</span></span> |
| <span class="line"><span style="color:#C678DD;">drop</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.wf02.*;</span></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="查看时间序列" tabindex="-1"><a class="header-anchor" href="#查看时间序列"><span>查看时间序列</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">SHOW TIMESERIES;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">SHOW TIMESERIES </span><span style="color:#56B6C2;"><</span><span style="color:#C678DD;">Path</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">SHOW TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.**;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">SHOW TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.**;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">SHOW TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">limit</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">SHOW TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> timeseries contains </span><span style="color:#98C379;">'wf01.wt'</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">SHOW TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> dataType</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">SHOW TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">SHOW LATEST TIMESERIES;</span></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><h4 id="统计时间序列数量" tabindex="-1"><a class="header-anchor" href="#统计时间序列数量"><span>统计时间序列数量</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.**;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.**;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*.</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> TIMESERIES contains </span><span style="color:#98C379;">'sgcc'</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> DATATYPE </span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;"> INT64;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> TAGS(unit) contains </span><span style="color:#98C379;">'c'</span><span style="color:#ABB2BF;">; </span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> TAGS(unit) </span><span style="color:#56B6C2;">=</span><span style="color:#98C379;"> 'c'</span><span style="color:#ABB2BF;">; </span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> TIMESERIES contains </span><span style="color:#98C379;">'sgcc'</span><span style="color:#C678DD;"> group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#C678DD;"> LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#C678DD;"> LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.wf01.* </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#C678DD;"> LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">;</span></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><h4 id="标签点管理" tabindex="-1"><a class="header-anchor" href="#标签点管理"><span>标签点管理</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;">(temprature) </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;"> tags(tag1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v1, tag2</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v2) attributes(attr1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v1, attr2</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v2);</span></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>重命名标签或属性</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;"> RENAME tag1 </span><span style="color:#C678DD;">TO</span><span style="color:#ABB2BF;"> newTag1;</span></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>重新设置标签或属性的值</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#C678DD;"> SET</span><span style="color:#ABB2BF;"> newTag1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">newV1, attr1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">newV1;</span></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>删除已经存在的标签或属性</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#C678DD;"> DROP</span><span style="color:#ABB2BF;"> tag1, tag2;</span></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>添加新的标签</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#C678DD;"> ADD</span><span style="color:#ABB2BF;"> TAGS tag3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, tag4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4;</span></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>添加新的属性</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#C678DD;"> ADD</span><span style="color:#ABB2BF;"> ATTRIBUTES attr3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, attr4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4;</span></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>更新插入别名，标签和属性</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;"> UPSERT ALIAS</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">newAlias TAGS(tag2</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">newV2, tag3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3) ATTRIBUTES(attr3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, attr4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4);</span></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>使用标签作为过滤条件查询时间序列</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">SHOW TIMESERIES (</span><span style="color:#56B6C2;"><</span><span style="color:#98C379;">\`PathPattern\`</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">)? timeseriesWhereClause;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>返回给定路径的下的所有满足条件的时间序列信息：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.hardware </span><span style="color:#C678DD;">ADD</span><span style="color:#ABB2BF;"> TAGS unit</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">c;</span></span> |
| <span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> ADD</span><span style="color:#ABB2BF;"> TAGS </span><span style="color:#C678DD;">description</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">test1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> TAGS(unit)</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'c'</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> TAGS(</span><span style="color:#C678DD;">description</span><span style="color:#ABB2BF;">) contains </span><span style="color:#98C379;">'test1'</span><span style="color:#ABB2BF;">;</span></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>使用标签作为过滤条件统计时间序列数量</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES (</span><span style="color:#56B6C2;"><</span><span style="color:#98C379;">\`PathPattern\`</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">)? timeseriesWhereClause;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES (</span><span style="color:#56B6C2;"><</span><span style="color:#98C379;">\`PathPattern\`</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">)? timeseriesWhereClause </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#C678DD;"> LEVEL</span><span style="color:#56B6C2;">=<</span><span style="color:#C678DD;">INTEGER</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></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>返回给定路径的下的所有满足条件的时间序列的数量：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">count timeseries;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">count timeseries </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> TAGS(unit)</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'c'</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">count timeseries </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> TAGS(unit)</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'c'</span><span style="color:#C678DD;"> group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 2</span><span style="color:#ABB2BF;">;</span></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>创建对齐时间序列：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> aligned timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1(s1 INT32 tags(tag1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v1, tag2</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v2) attributes(attr1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v1, attr2</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v2), s2 DOUBLE tags(tag3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, tag4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4) attributes(attr3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, attr4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4));</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>支持查询：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">show timeseries </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> TAGS(tag1)</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'v1'</span><span style="color:#ABB2BF;">;</span></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="_1-3-时间序列路径管理" tabindex="-1"><a class="header-anchor" href="#_1-3-时间序列路径管理"><span>1.3 时间序列路径管理</span></a></h3><h4 id="查看路径的所有子路径" tabindex="-1"><a class="header-anchor" href="#查看路径的所有子路径"><span>查看路径的所有子路径</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">SHOW CHILD PATHS pathPattern;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">- 查询 </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;"> 的下一层;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show child paths </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">- 查询形如 </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">xx</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">xx</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">xx</span><span style="color:#ABB2BF;"> 的路径;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show child paths </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.*.*;</span></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><h4 id="查看路径的所有子节点" tabindex="-1"><a class="header-anchor" href="#查看路径的所有子节点"><span>查看路径的所有子节点</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">SHOW CHILD NODES pathPattern;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">- 查询 </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;"> 的下一层;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show child nodes </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">- 查询 </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;"> 的下一层;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show child nodes </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">;</span></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><h4 id="查看设备" tabindex="-1"><a class="header-anchor" href="#查看设备"><span>查看设备</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">show devices;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show devices </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.**;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show devices </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></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><h5 id="查看设备及其-database-信息" tabindex="-1"><a class="header-anchor" href="#查看设备及其-database-信息"><span>查看设备及其 database 信息</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">show devices </span><span style="color:#C678DD;">with</span><span style="color:#C678DD;"> database</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show devices </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">with</span><span style="color:#C678DD;"> database</span><span style="color:#ABB2BF;">;</span></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><h4 id="统计节点数" tabindex="-1"><a class="header-anchor" href="#统计节点数"><span>统计节点数</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">COUNT NODES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT NODES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT NODES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.wf01.* </span><span style="color:#C678DD;">LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT NODES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.**.temperature </span><span style="color:#C678DD;">LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">;</span></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="统计设备数量" tabindex="-1"><a class="header-anchor" href="#统计设备数量"><span>统计设备数量</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">count devices;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">count devices </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.**;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">count devices </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></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><h3 id="_1-4-设备模板管理" tabindex="-1"><a class="header-anchor" href="#_1-4-设备模板管理"><span>1.4 设备模板管理</span></a></h3><p><img src="`+r+'" alt="img" loading="lazy"><br><img src="'+t+`" alt="img" loading="lazy"></p><h4 id="创建设备模板" tabindex="-1"><a class="header-anchor" href="#创建设备模板"><span>创建设备模板</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> DEVICE TEMPLATE </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">templateName</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> ALIGNED? </span><span style="color:#98C379;">'('</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">measurementId</span><span style="color:#56B6C2;">></span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">attributeClauses</span><span style="color:#56B6C2;">></span><span style="color:#E06C75;"> [',' <measurementId> <attributeClauses>]</span><span style="color:#ABB2BF;">+ </span><span style="color:#98C379;">')'</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>创建包含两个非对齐序列的设备模板</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> device template t1 (temperature </span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> BOOLEAN</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>创建包含一组对齐序列的设备模板</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> device template t2 aligned (lat </span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">, lon </span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">);</span></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="挂载设备模板" tabindex="-1"><a class="header-anchor" href="#挂载设备模板"><span>挂载设备模板</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">set</span><span style="color:#ABB2BF;"> DEVICE TEMPLATE t1 </span><span style="color:#C678DD;">to</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">;</span></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="激活设备模板" tabindex="-1"><a class="header-anchor" href="#激活设备模板"><span>激活设备模板</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#C678DD;">using</span><span style="color:#ABB2BF;"> DEVICE TEMPLATE </span><span style="color:#C678DD;">on</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">set</span><span style="color:#ABB2BF;"> DEVICE TEMPLATE t1 </span><span style="color:#C678DD;">to</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">set</span><span style="color:#ABB2BF;"> DEVICE TEMPLATE t2 </span><span style="color:#C678DD;">to</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#C678DD;">using</span><span style="color:#ABB2BF;"> device template </span><span style="color:#C678DD;">on</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#C678DD;">using</span><span style="color:#ABB2BF;"> device template </span><span style="color:#C678DD;">on</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d2;</span></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><h4 id="查看设备模板" tabindex="-1"><a class="header-anchor" href="#查看设备模板"><span>查看设备模板</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">show device templates;</span></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>查看某个设备模板下的物理量</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">show nodes </span><span style="color:#C678DD;">in</span><span style="color:#ABB2BF;"> device template t1;</span></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>查看挂载了某个设备模板的路径</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">show paths </span><span style="color:#C678DD;">set</span><span style="color:#ABB2BF;"> device template t1;</span></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>查看使用了某个设备模板的路径（即模板在该路径上已激活，序列已创建）</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">show paths </span><span style="color:#C678DD;">using</span><span style="color:#ABB2BF;"> device template t1;</span></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="解除设备模板" tabindex="-1"><a class="header-anchor" href="#解除设备模板"><span>解除设备模板</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">delete</span><span style="color:#ABB2BF;"> timeseries of device template t1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">deactivate device template t1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></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>批量处理</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">delete</span><span style="color:#ABB2BF;"> timeseries of device template t1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.*, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg2</span><span style="color:#ABB2BF;">.*;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">deactivate device template t1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.*, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg2</span><span style="color:#ABB2BF;">.*;</span></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><h4 id="卸载设备模板" tabindex="-1"><a class="header-anchor" href="#卸载设备模板"><span>卸载设备模板</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">unset device template t1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></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="删除设备模板" tabindex="-1"><a class="header-anchor" href="#删除设备模板"><span>删除设备模板</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">drop</span><span style="color:#ABB2BF;"> device template t1;</span></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="_1-5-数据存活时间管理" tabindex="-1"><a class="header-anchor" href="#_1-5-数据存活时间管理"><span>1.5 数据存活时间管理</span></a></h3><h4 id="设置-ttl" tabindex="-1"><a class="header-anchor" href="#设置-ttl"><span>设置 TTL</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">set</span><span style="color:#ABB2BF;"> ttl </span><span style="color:#C678DD;">to</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#D19A66;"> 3600000</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">set</span><span style="color:#ABB2BF;"> ttl </span><span style="color:#C678DD;">to</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.** </span><span style="color:#D19A66;">3600000</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">set</span><span style="color:#ABB2BF;"> ttl </span><span style="color:#C678DD;">to</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#D19A66;">3600000</span><span style="color:#ABB2BF;">;</span></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="取消-ttl" tabindex="-1"><a class="header-anchor" href="#取消-ttl"><span>取消 TTL</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">unset ttl </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">unset ttl </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.**;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">unset ttl </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.**;</span></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="显示-ttl" tabindex="-1"><a class="header-anchor" href="#显示-ttl"><span>显示 TTL</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">SHOW ALL TTL;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">SHOW TTL </span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> pathPattern;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show DEVICES;</span></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="_2-写入数据" tabindex="-1"><a class="header-anchor" href="#_2-写入数据"><span>2. 写入数据</span></a></h2><h3 id="_2-1-写入单列数据" tabindex="-1"><a class="header-anchor" href="#_2-1-写入单列数据"><span>2.1 写入单列数据</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">timestamp</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,true);</span></span> |
| <span class="line"><span style="color:#C678DD;">insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">timestamp</span><span style="color:#ABB2BF;">,hardware) </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'v1'</span><span style="color:#ABB2BF;">),(</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'v1'</span><span style="color:#ABB2BF;">);</span></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="_2-2-写入多列数据" tabindex="-1"><a class="header-anchor" href="#_2-2-写入多列数据"><span>2.2 写入多列数据</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">timestamp</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">, hardware) </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;"> (</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">, false, </span><span style="color:#98C379;">'v2'</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">timestamp</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">, hardware) </span><span style="color:#C678DD;">VALUES</span><span style="color:#ABB2BF;"> (</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, false, </span><span style="color:#98C379;">'v3'</span><span style="color:#ABB2BF;">),(</span><span style="color:#D19A66;">4</span><span style="color:#ABB2BF;">, true, </span><span style="color:#98C379;">'v4'</span><span style="color:#ABB2BF;">);</span></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="_2-3-使用服务器时间戳" tabindex="-1"><a class="header-anchor" href="#_2-3-使用服务器时间戳"><span>2.3 使用服务器时间戳</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">, hardware) </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;"> (false, </span><span style="color:#98C379;">'v2'</span><span style="color:#ABB2BF;">);</span></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="_2-4-写入对齐时间序列数据" tabindex="-1"><a class="header-anchor" href="#_2-4-写入对齐时间序列数据"><span>2.4 写入对齐时间序列数据</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> aligned timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1(s1 INT32, s2 DOUBLE);</span></span> |
| <span class="line"><span style="color:#C678DD;">insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1(</span><span style="color:#C678DD;">timestamp</span><span style="color:#ABB2BF;">, s1, s2) aligned </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1(</span><span style="color:#C678DD;">timestamp</span><span style="color:#ABB2BF;">, s1, s2) aligned </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">), (</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></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="_2-5-加载-tsfile-文件数据" tabindex="-1"><a class="header-anchor" href="#_2-5-加载-tsfile-文件数据"><span>2.5 加载 TsFile 文件数据</span></a></h3><p>load '<path/dir>' [sglevel=int][onSuccess=delete/none]</p><h4 id="通过指定文件路径-绝对路径-加载单-tsfile-文件" tabindex="-1"><a class="header-anchor" href="#通过指定文件路径-绝对路径-加载单-tsfile-文件"><span>通过指定文件路径(绝对路径)加载单 tsfile 文件</span></a></h4><ul><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile'</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' sglevel=1 onSuccess=delete</code></li></ul><h4 id="通过指定文件夹路径-绝对路径-批量加载文件" tabindex="-1"><a class="header-anchor" href="#通过指定文件夹路径-绝对路径-批量加载文件"><span>通过指定文件夹路径(绝对路径)批量加载文件</span></a></h4><ul><li><code>load '/Users/Desktop/data'</code></li><li><code>load '/Users/Desktop/data' sglevel=1</code></li><li><code>load '/Users/Desktop/data' onSuccess=delete</code></li><li><code>load '/Users/Desktop/data' sglevel=1 onSuccess=delete</code></li></ul><h2 id="_3-删除数据" tabindex="-1"><a class="header-anchor" href="#_3-删除数据"><span>3. 删除数据</span></a></h2><h3 id="_3-1-删除单列数据" tabindex="-1"><a class="header-anchor" href="#_3-1-删除单列数据"><span>3.1 删除单列数据</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 20</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 20</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 20</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 20</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 20</span><span style="color:#ABB2BF;">;</span></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><p>出错：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 4</span><span style="color:#C678DD;"> or</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 0</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">Msg: </span><span style="color:#D19A66;">303</span><span style="color:#ABB2BF;">: </span><span style="color:#C678DD;">Check</span><span style="color:#ABB2BF;"> metadata error: </span><span style="color:#C678DD;">For</span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> statement</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> clause can only contain </span><span style="color:#C678DD;">atomic</span><span style="color:#ABB2BF;"> expressions </span><span style="color:#C678DD;">like</span><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> ></span><span style="color:#ABB2BF;"> XXX, </span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> <=</span><span style="color:#ABB2BF;"> XXX, </span><span style="color:#C678DD;">or</span><span style="color:#ABB2BF;"> two </span><span style="color:#C678DD;">atomic</span><span style="color:#ABB2BF;"> expressions connected </span><span style="color:#C678DD;">by</span><span style="color:#98C379;"> 'AND'</span></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>删除时间序列中的所有数据：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">;</span></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="_3-2-删除多列数据" tabindex="-1"><a class="header-anchor" href="#_3-2-删除多列数据"><span>3.2 删除多列数据</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.* </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>声明式的编程方式：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#C678DD;"> now</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#ABB2BF;">Msg: The </span><span style="color:#C678DD;">statement</span><span style="color:#C678DD;"> is</span><span style="color:#ABB2BF;"> executed successfully.</span></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="_4-数据查询" tabindex="-1"><a class="header-anchor" href="#_4-数据查询"><span>4. 数据查询</span></a></h2><h3 id="_4-1-基础查询" tabindex="-1"><a class="header-anchor" href="#_4-1-基础查询"><span>4.1 基础查询</span></a></h3><h4 id="时间过滤查询" tabindex="-1"><a class="header-anchor" href="#时间过滤查询"><span>时间过滤查询</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">;</span></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="根据一个时间区间选择多列数据" tabindex="-1"><a class="header-anchor" href="#根据一个时间区间选择多列数据"><span>根据一个时间区间选择多列数据</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">, temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">;</span></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="按照多个时间区间选择同一设备的多列数据" tabindex="-1"><a class="header-anchor" href="#按照多个时间区间选择同一设备的多列数据"><span>按照多个时间区间选择同一设备的多列数据</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">, temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">or</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">35</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">);</span></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="按照多个时间区间选择不同设备的多列数据" tabindex="-1"><a class="header-anchor" href="#按照多个时间区间选择不同设备的多列数据"><span>按照多个时间区间选择不同设备的多列数据</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#D19A66;"> wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.hardware </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#C678DD;"> where</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">or</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">35</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">);</span></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="根据时间降序返回结果集" tabindex="-1"><a class="header-anchor" href="#根据时间降序返回结果集"><span>根据时间降序返回结果集</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> order by</span><span style="color:#C678DD;"> time</span><span style="color:#C678DD;"> desc</span><span style="color:#C678DD;"> limit</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">;</span></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="_4-2-选择表达式" tabindex="-1"><a class="header-anchor" href="#_4-2-选择表达式"><span>4.2 选择表达式</span></a></h3><h4 id="使用别名" tabindex="-1"><a class="header-anchor" href="#使用别名"><span>使用别名</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1 </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> temperature, s2 </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> speed </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></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="运算符" tabindex="-1"><a class="header-anchor" href="#运算符"><span>运算符</span></a></h4><h4 id="函数" tabindex="-1"><a class="header-anchor" href="#函数"><span>函数</span></a></h4><p>不支持：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> sin</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">100</span><span style="color:#ABB2BF;">),10ms);</span></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><h5 id="时间序列查询嵌套表达式" tabindex="-1"><a class="header-anchor" href="#时间序列查询嵌套表达式"><span>时间序列查询嵌套表达式</span></a></h5><p>示例 1：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> a,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> b,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ((a + </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">) * </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;"> - </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">) % </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;"> + </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#56B6C2;"> sin</span><span style="color:#ABB2BF;">(a + </span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(a + </span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(b))),</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> -(a + b) * (</span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(a + b) * </span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(a + b) + </span><span style="color:#56B6C2;">cos</span><span style="color:#ABB2BF;">(a + b) * </span><span style="color:#56B6C2;">cos</span><span style="color:#ABB2BF;">(a + b)) + </span><span style="color:#D19A66;">1</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">;</span></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>示例 2：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> (a + b) * </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;"> + </span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(a) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>示例 3：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> (a + *) / </span><span style="color:#D19A66;">2</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>示例 4：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> (a + b) * </span><span style="color:#D19A66;">3</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="聚合查询嵌套表达式" tabindex="-1"><a class="header-anchor" href="#聚合查询嵌套表达式"><span>聚合查询嵌套表达式</span></a></h5><p>示例 1：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> sin</span><span style="color:#ABB2BF;">(</span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(temperature)),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) + </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> -</span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(hardware),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) + </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(hardware)</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></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>示例 2：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(*), </span></span> |
| <span class="line"><span style="color:#ABB2BF;"> (</span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(*) + </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">) * </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;"> / </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;"> -</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">;</span></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>示例 3：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> sin</span><span style="color:#ABB2BF;">(</span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(temperature)),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) + </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> -</span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(hardware),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) + </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(hardware) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> custom_sum</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span></span> |
| <span class="line"><span style="color:#C678DD;">GROUP BY</span><span style="color:#ABB2BF;">([</span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">90</span><span style="color:#ABB2BF;">), 10ms);</span></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><h4 id="最新点查询" tabindex="-1"><a class="header-anchor" href="#最新点查询"><span>最新点查询</span></a></h4><p>SQL 语法：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> last</span><span style="color:#56B6C2;"> <</span><span style="color:#C678DD;">Path</span><span style="color:#56B6C2;">></span><span style="color:#E06C75;"> [COMMA <Path>]</span><span style="color:#ABB2BF;">* </span><span style="color:#C678DD;">from</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;"> PrefixPath </span><span style="color:#56B6C2;">></span><span style="color:#E06C75;"> [COMMA < PrefixPath >]</span><span style="color:#ABB2BF;">* </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">whereClause</span><span style="color:#56B6C2;">></span><span style="color:#E06C75;"> [ORDER BY TIMESERIES (DESC | ASC)?]</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 root.ln.wf01.wt01.status 的最新数据点</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> last</span><span style="color:#C678DD;"> status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 root.ln.wf01.wt01 下 status，temperature 时间戳大于等于 2017-11-07T23:50:00 的最新数据点</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> last</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">, temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">50</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 root.ln.wf01.wt01 下所有序列的最新数据点，并按照序列名降序排列</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> last</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> order by</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#C678DD;">desc</span><span style="color:#ABB2BF;">;</span></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="_4-3-查询过滤条件" tabindex="-1"><a class="header-anchor" href="#_4-3-查询过滤条件"><span>4.3 查询过滤条件</span></a></h3><h4 id="时间过滤条件" tabindex="-1"><a class="header-anchor" href="#时间过滤条件"><span>时间过滤条件</span></a></h4><p>选择时间戳大于 2022-01-01T00:05:00.000 的数据：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2022</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择时间戳等于 2022-01-01T00:05:00.000 的数据：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 2022</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择时间区间 [2017-11-01T00:05:00.000, 2017-11-01T00:12:00.000) 内的数据：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2022</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">;</span></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="值过滤条件" tabindex="-1"><a class="header-anchor" href="#值过滤条件"><span>值过滤条件</span></a></h4><p>选择值大于 36.5 的数据：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 36</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择值等于 true 的数据：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> status</span><span style="color:#56B6C2;"> =</span><span style="color:#ABB2BF;"> true;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择区间 [36.5,40] 内或之外的数据：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">between</span><span style="color:#D19A66;"> 36</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#C678DD;"> and</span><span style="color:#D19A66;"> 40</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">not</span><span style="color:#C678DD;"> between</span><span style="color:#D19A66;"> 36</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#C678DD;"> and</span><span style="color:#D19A66;"> 40</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择值在特定范围内的数据：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">in</span><span style="color:#ABB2BF;"> (</span><span style="color:#98C379;">'200'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'300'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'400'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'500'</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择值在特定范围外的数据：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">not</span><span style="color:#C678DD;"> in</span><span style="color:#ABB2BF;"> (</span><span style="color:#98C379;">'200'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'300'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'400'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'500'</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择值为空的数据:</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">is</span><span style="color:#C678DD;"> null</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择值为非空的数据:</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">is not null</span><span style="color:#ABB2BF;">;</span></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="模糊查询" tabindex="-1"><a class="header-anchor" href="#模糊查询"><span>模糊查询</span></a></h4><p>查询 <code>root.sg.d1</code> 下 <code>value</code> 含有<code>'cc'</code>的数据</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#C678DD;"> like</span><span style="color:#98C379;"> '%cc%'</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 <code>root.sg.d1</code> 下 <code>value</code> 中间为 <code>'b'</code>、前后为任意单个字符的数据</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.device </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#C678DD;"> like</span><span style="color:#98C379;"> '_b_'</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 root.sg.d1 下 value 值为26个英文字符组成的字符串</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#ABB2BF;"> regexp </span><span style="color:#98C379;">'^[A-Za-z]+$'</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 root.sg.d1 下 value 值为26个小写英文字符组成的字符串且时间大于100的</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#ABB2BF;"> regexp </span><span style="color:#98C379;">'^[a-z]+$'</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 100</span><span style="color:#ABB2BF;">;</span></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="_4-4-分段分组聚合" tabindex="-1"><a class="header-anchor" href="#_4-4-分段分组聚合"><span>4.4 分段分组聚合</span></a></h3><h4 id="未指定滑动步长的时间区间分组聚合查询" tabindex="-1"><a class="header-anchor" href="#未指定滑动步长的时间区间分组聚合查询"><span>未指定滑动步长的时间区间分组聚合查询</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">), max_value(temperature) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">),1d);</span></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="指定滑动步长的时间区间分组聚合查询" tabindex="-1"><a class="header-anchor" href="#指定滑动步长的时间区间分组聚合查询"><span>指定滑动步长的时间区间分组聚合查询</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">), max_value(temperature) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">07</span><span style="color:#D19A66;"> 23</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">), 3h, 1d);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>滑动步长可以小于聚合窗口</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">), max_value(temperature) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">), 4h, 2h);</span></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="按照自然月份的时间区间分组聚合查询" tabindex="-1"><a class="header-anchor" href="#按照自然月份的时间区间分组聚合查询"><span>按照自然月份的时间区间分组聚合查询</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T01:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;">([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2019</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">), 1mo, 2mo);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>每个时间间隔窗口内都有数据</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;">([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">-31T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2019</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">), 1mo, 2mo);</span></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="左开右闭区间" tabindex="-1"><a class="header-anchor" href="#左开右闭区间"><span>左开右闭区间</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ((</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">],1d);</span></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="与分组聚合混合使用" tabindex="-1"><a class="header-anchor" href="#与分组聚合混合使用"><span>与分组聚合混合使用</span></a></h4><p>统计降采样后的数据点个数</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ((</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">],1d), </span><span style="color:#C678DD;">level</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>加上滑动 Step 的降采样后的结果也可以汇总</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">07</span><span style="color:#D19A66;"> 23</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">), 3h, 1d), </span><span style="color:#C678DD;">level</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">;</span></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="路径层级分组聚合" tabindex="-1"><a class="header-anchor" href="#路径层级分组聚合"><span>路径层级分组聚合</span></a></h4><p>统计不同 database 下 status 序列的数据点个数</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>统计不同设备下 status 序列的数据点个数</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 3</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>统计不同 database 下的不同设备中 status 序列的数据点个数</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询所有序列下温度传感器 temperature 的最大值</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> max_value(temperature) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 0</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询某一层级下所有传感器拥有的总数据点数</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(*) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 2</span><span style="color:#ABB2BF;">;</span></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="标签分组聚合" tabindex="-1"><a class="header-anchor" href="#标签分组聚合"><span>标签分组聚合</span></a></h4><h5 id="单标签聚合查询" tabindex="-1"><a class="header-anchor" href="#单标签聚合查询"><span>单标签聚合查询</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#56B6C2;"> AVG</span><span style="color:#ABB2BF;">(temperature) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">factory1</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#ABB2BF;"> TAGS(city);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="多标签聚合查询" tabindex="-1"><a class="header-anchor" href="#多标签聚合查询"><span>多标签聚合查询</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">factory1</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#ABB2BF;"> TAGS(city, workshop);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="基于时间区间的标签聚合查询" tabindex="-1"><a class="header-anchor" href="#基于时间区间的标签聚合查询"><span>基于时间区间的标签聚合查询</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#56B6C2;"> AVG</span><span style="color:#ABB2BF;">(temperature) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">factory1</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1000</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">10000</span><span style="color:#ABB2BF;">), 5s), TAGS(city, workshop);</span></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="差值分段聚合" tabindex="-1"><a class="header-anchor" href="#差值分段聚合"><span>差值分段聚合</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> variation(controlExpression</span><span style="color:#E06C75;">[,delta][,ignoreNull=true/false]</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="delta-0时的等值事件分段" tabindex="-1"><a class="header-anchor" href="#delta-0时的等值事件分段"><span>delta=0时的等值事件分段</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> __endTime, </span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s2), </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> variation(s6);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>指定ignoreNull为false</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> __endTime, </span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s2), </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> variation(s6, ignoreNull</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">false);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="delta-0时的差值事件分段" tabindex="-1"><a class="header-anchor" href="#delta-0时的差值事件分段"><span>delta!=0时的差值事件分段</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> __endTime, </span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s2), </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> variation(s6, </span><span style="color:#D19A66;">4</span><span style="color:#ABB2BF;">);</span></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="条件分段聚合" tabindex="-1"><a class="header-anchor" href="#条件分段聚合"><span>条件分段聚合</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> condition(predict,</span><span style="color:#E06C75;">[keep>/>=/=/<=/<]</span><span style="color:#ABB2BF;">threshold,</span><span style="color:#E06C75;">[,ignoreNull=true/false]</span><span style="color:#ABB2BF;">)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询至少连续两行以上的charging_status=1的数据</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> max_time(charging_status),</span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(vehicle_status),</span><span style="color:#56B6C2;">last_value</span><span style="color:#ABB2BF;">(soc) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> condition(charging_status</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">KEEP</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">,ignoreNull</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">true);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>当设置<code>ignoreNull</code>为false时，遇到null值为将其视为一个不满足条件的行，得到结果原先的分组被含null的行拆分</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> max_time(charging_status),</span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(vehicle_status),</span><span style="color:#56B6C2;">last_value</span><span style="color:#ABB2BF;">(soc) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> condition(charging_status</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">KEEP</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">,ignoreNull</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">false);</span></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="会话分段聚合" tabindex="-1"><a class="header-anchor" href="#会话分段聚合"><span>会话分段聚合</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> session</span><span style="color:#ABB2BF;">(timeInterval)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>按照不同的时间单位设定时间间隔</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> __endTime,</span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(*) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> session</span><span style="color:#ABB2BF;">(1d);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>和<code>HAVING</code>、<code>ALIGN BY DEVICE</code>共同使用</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> __endTime,</span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(hardware) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#C678DD;"> session</span><span style="color:#ABB2BF;">(50s) </span><span style="color:#C678DD;">having</span><span style="color:#56B6C2;"> sum</span><span style="color:#ABB2BF;">(hardware)</span><span style="color:#56B6C2;">></span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></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="点数分段聚合" tabindex="-1"><a class="header-anchor" href="#点数分段聚合"><span>点数分段聚合</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">group by</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(controlExpression, </span><span style="color:#C678DD;">size</span><span style="color:#E06C75;">[,ignoreNull=true/false]</span><span style="color:#ABB2BF;">)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(charging_stauts), </span><span style="color:#56B6C2;">first_value</span><span style="color:#ABB2BF;">(soc) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#C678DD;"> group by</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(charging_status,</span><span style="color:#D19A66;">5</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>当使用ignoreNull将null值也考虑进来</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(charging_stauts), </span><span style="color:#56B6C2;">first_value</span><span style="color:#ABB2BF;">(soc) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#C678DD;"> group by</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(charging_status,</span><span style="color:#D19A66;">5</span><span style="color:#ABB2BF;">,ignoreNull</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">false);</span></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="_4-5-聚合结果过滤" tabindex="-1"><a class="header-anchor" href="#_4-5-聚合结果过滤"><span>4.5 聚合结果过滤</span></a></h3><p>不正确的：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">),1ms) </span><span style="color:#C678DD;">having</span><span style="color:#56B6C2;"> sum</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> s1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">),1ms) </span><span style="color:#C678DD;">having</span><span style="color:#ABB2BF;"> s1 </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">),1ms), </span><span style="color:#C678DD;">level</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#C678DD;"> having</span><span style="color:#56B6C2;"> sum</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;">) </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">),1ms), </span><span style="color:#C678DD;">level</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#C678DD;"> having</span><span style="color:#56B6C2;"> sum</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;">;</span></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><p>SQL 示例：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">),2ms), </span><span style="color:#C678DD;">level</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#C678DD;"> having</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 2</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">),2ms) </span><span style="color:#C678DD;">having</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></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="_4-6-结果集补空值" tabindex="-1"><a class="header-anchor" href="#_4-6-结果集补空值"><span>4.6 结果集补空值</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">FILL </span><span style="color:#98C379;">'('</span><span style="color:#ABB2BF;"> PREVIOUS | LINEAR | constant (, interval</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">DURATION_LITERAL)? </span><span style="color:#98C379;">')'</span></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-填充" tabindex="-1"><a class="header-anchor" href="#previous-填充"><span><code>PREVIOUS</code> 填充</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">40</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> fill(previous);</span></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-填充并指定填充超时阈值" tabindex="-1"><a class="header-anchor" href="#previous-填充并指定填充超时阈值"><span><code>PREVIOUS</code> 填充并指定填充超时阈值</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">40</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> fill(previous, 2m);</span></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-填充" tabindex="-1"><a class="header-anchor" href="#linear-填充"><span><code>LINEAR</code> 填充</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">40</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> fill(linear);</span></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="常量填充" tabindex="-1"><a class="header-anchor" href="#常量填充"><span>常量填充</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">40</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> fill(</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>使用 <code>BOOLEAN</code> 类型的常量填充</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">40</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> fill(true);</span></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="_4-7-查询结果分页" tabindex="-1"><a class="header-anchor" href="#_4-7-查询结果分页"><span>4.7 查询结果分页</span></a></h3><h4 id="按行分页" tabindex="-1"><a class="header-anchor" href="#按行分页"><span>按行分页</span></a></h4><p>基本的 <code>LIMIT</code> 子句</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">, temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> limit</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>带 <code>OFFSET</code> 的 <code>LIMIT</code> 子句</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">, temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> limit</span><span style="color:#D19A66;"> 5</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p><code>LIMIT</code> 子句与 <code>WHERE</code> 子句结合</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">,temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> limit</span><span style="color:#D19A66;"> 5</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p><code>LIMIT</code> 子句与 <code>GROUP BY</code> 子句组合</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">), max_value(temperature) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">),1d) </span><span style="color:#C678DD;">limit</span><span style="color:#D19A66;"> 4</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">;</span></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="按列分页" tabindex="-1"><a class="header-anchor" href="#按列分页"><span>按列分页</span></a></h4><p>基本的 <code>SLIMIT</code> 子句</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> slimit </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>带 <code>SOFFSET</code> 的 <code>SLIMIT</code> 子句</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> slimit </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;"> soffset </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p><code>SLIMIT</code> 子句与 <code>GROUP BY</code> 子句结合</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> max_value(*) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">),1d) slimit </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;"> soffset </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p><code>SLIMIT</code> 子句与 <code>LIMIT</code> 子句结合</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> limit</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">100</span><span style="color:#ABB2BF;"> slimit </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;"> soffset </span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">;</span></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="_4-8-排序" tabindex="-1"><a class="header-anchor" href="#_4-8-排序"><span>4.8 排序</span></a></h3><p>时间对齐模式下的排序</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> order by</span><span style="color:#C678DD;"> time</span><span style="color:#C678DD;"> desc</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>设备对齐模式下的排序</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> order by</span><span style="color:#ABB2BF;"> device </span><span style="color:#C678DD;">desc</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">time</span><span style="color:#C678DD;"> asc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>在时间戳相等时按照设备名排序</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> order by</span><span style="color:#C678DD;"> time</span><span style="color:#C678DD;"> asc</span><span style="color:#ABB2BF;">,device </span><span style="color:#C678DD;">desc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>没有显式指定时</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>对聚合后的结果进行排序</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(*) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ((</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">+</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">03</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">+</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">],1m) </span><span style="color:#C678DD;">order by</span><span style="color:#ABB2BF;"> device </span><span style="color:#C678DD;">asc</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">time</span><span style="color:#C678DD;"> asc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></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="_4-9-查询对齐模式" tabindex="-1"><a class="header-anchor" href="#_4-9-查询对齐模式"><span>4.9 查询对齐模式</span></a></h3><h4 id="按设备对齐" tabindex="-1"><a class="header-anchor" href="#按设备对齐"><span>按设备对齐</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></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="_4-10-查询写回-select-into" tabindex="-1"><a class="header-anchor" href="#_4-10-查询写回-select-into"><span>4.10 查询写回（SELECT INTO）</span></a></h3><h4 id="整体描述" tabindex="-1"><a class="header-anchor" href="#整体描述"><span>整体描述</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">selectIntoStatement</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">SELECT</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> resultColumn </span><span style="color:#E06C75;">[, resultColumn]</span><span style="color:#ABB2BF;"> ...</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#ABB2BF;"> intoItem </span><span style="color:#E06C75;">[, intoItem]</span><span style="color:#ABB2BF;"> ...</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#ABB2BF;"> prefixPath </span><span style="color:#E06C75;">[, prefixPath]</span><span style="color:#ABB2BF;"> ...</span></span> |
| <span class="line"><span style="color:#E06C75;"> [WHERE whereCondition]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [GROUP BY groupByTimeClause, groupByLevelClause]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [FILL ({PREVIOUS | LINEAR | constant} (, interval=DURATION_LITERAL)?)]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [LIMIT rowLimit OFFSET rowOffset]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [ALIGN BY DEVICE]</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">intoItem</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#E06C75;">[ALIGNED]</span><span style="color:#ABB2BF;"> intoDevicePath </span><span style="color:#98C379;">'('</span><span style="color:#ABB2BF;"> intoMeasurementName </span><span style="color:#E06C75;">[',' intoMeasurementName]</span><span style="color:#ABB2BF;">* </span><span style="color:#98C379;">')'</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></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></div><p>按时间对齐，将 <code>root.sg</code> database 下四条序列的查询结果写入到 <code>root.sg_copy</code> database 下指定的四条序列中</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2 </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(t1), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(t1, t2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(t2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>按时间对齐，将聚合查询的结果存储到指定序列中</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1 + s2), </span><span style="color:#56B6C2;">last_value</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">agg</span><span style="color:#ABB2BF;">.</span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s1_add_s2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">agg</span><span style="color:#ABB2BF;">.</span><span style="color:#56B6C2;">last_value</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">100</span><span style="color:#ABB2BF;">), 10ms);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>按设备对齐</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2 </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(t1, t2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(t1, t2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2 align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>按设备对齐，将表达式计算的结果存储到指定序列中</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1 + s2 </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">expr</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">add</span><span style="color:#ABB2BF;">(d1s1_d1s2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">expr</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">add</span><span style="color:#ABB2BF;">(d2s1_d2s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2 align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></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="使用变量占位符" tabindex="-1"><a class="header-anchor" href="#使用变量占位符"><span>使用变量占位符</span></a></h4><h5 id="按时间对齐-默认" tabindex="-1"><a class="header-anchor" href="#按时间对齐-默认"><span>按时间对齐（默认）</span></a></h5><h6 id="目标设备不使用变量占位符-目标物理量列表使用变量占位符" tabindex="-1"><a class="header-anchor" href="#目标设备不使用变量占位符-目标物理量列表使用变量占位符"><span>目标设备不使用变量占位符 & 目标物理量列表使用变量占位符</span></a></h6><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2</span></span> |
| <span class="line"><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(::), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(s1), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(\${</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">}), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(::)</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2;</span></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>该语句等价于：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2</span></span> |
| <span class="line"><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(s1), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(s1), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(s2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(s2)</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2;</span></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><h6 id="目标设备使用变量占位符-目标物理量列表不使用变量占位符" tabindex="-1"><a class="header-anchor" href="#目标设备使用变量占位符-目标物理量列表不使用变量占位符"><span>目标设备使用变量占位符 & 目标物理量列表不使用变量占位符</span></a></h6><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#D19A66;"> d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s2</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">d2</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s3</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">d3</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s4</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#C678DD;">into</span><span style="color:#ABB2BF;"> ::(s1_1, s2_2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2_2(s3_3), </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.\${</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">}_copy.::(s4)</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">;</span></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><h6 id="目标设备使用变量占位符-目标物理量列表使用变量占位符" tabindex="-1"><a class="header-anchor" href="#目标设备使用变量占位符-目标物理量列表使用变量占位符"><span>目标设备使用变量占位符 & 目标物理量列表使用变量占位符</span></a></h6><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_bk</span><span style="color:#ABB2BF;">.::(::) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.**;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="按设备对齐-使用-align-by-device" tabindex="-1"><a class="header-anchor" href="#按设备对齐-使用-align-by-device"><span>按设备对齐（使用 <code>ALIGN BY DEVICE</code>）</span></a></h5><h6 id="目标设备不使用变量占位符-目标物理量列表使用变量占位符-1" tabindex="-1"><a class="header-anchor" href="#目标设备不使用变量占位符-目标物理量列表使用变量占位符-1"><span>目标设备不使用变量占位符 & 目标物理量列表使用变量占位符</span></a></h6><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2, s3, s4</span></span> |
| <span class="line"><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">backup_sg</span><span style="color:#ABB2BF;">.d1(s1, s2, s3, s4), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">backup_sg</span><span style="color:#ABB2BF;">.d2(::), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d3(backup_\${</span><span style="color:#D19A66;">4</span><span style="color:#ABB2BF;">})</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d3</span></span> |
| <span class="line"><span style="color:#ABB2BF;">align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></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><h6 id="目标设备使用变量占位符-目标物理量列表不使用变量占位符-1" tabindex="-1"><a class="header-anchor" href="#目标设备使用变量占位符-目标物理量列表不使用变量占位符-1"><span>目标设备使用变量占位符 & 目标物理量列表不使用变量占位符</span></a></h6><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s2) + </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s3), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s4)</span></span> |
| <span class="line"><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">agg_</span><span style="color:#ABB2BF;">\${</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">}.::(avg_s1, sum_s2_add_s3, count_s4)</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.**</span></span> |
| <span class="line"><span style="color:#ABB2BF;">align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></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><h6 id="目标设备使用变量占位符-目标物理量列表使用变量占位符-1" tabindex="-1"><a class="header-anchor" href="#目标设备使用变量占位符-目标物理量列表使用变量占位符-1"><span>目标设备使用变量占位符 & 目标物理量列表使用变量占位符</span></a></h6><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">into</span><span style="color:#ABB2BF;"> ::(backup_\${</span><span style="color:#D19A66;">4</span><span style="color:#ABB2BF;">}) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.** align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></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="指定目标序列为对齐序列" tabindex="-1"><a class="header-anchor" href="#指定目标序列为对齐序列"><span>指定目标序列为对齐序列</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2 </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(t1, t2), aligned </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(t1, t2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2 align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></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="_5-运维语句" tabindex="-1"><a class="header-anchor" href="#_5-运维语句"><span>5. 运维语句</span></a></h2><p>生成对应的查询计划</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">explain </span><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1,s2 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>执行对应的查询语句，并获取分析结果</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">explain analyze </span><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1,s2 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">order by</span><span style="color:#ABB2BF;"> s1;</span></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="_6-运算符" tabindex="-1"><a class="header-anchor" href="#_6-运算符"><span>6. 运算符</span></a></h2>`,350)),n("p",null,[s[1]||(s[1]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html"},{default:e(()=>[...s[0]||(s[0]=[a("Operator-and-Expression",-1)])]),_:1})]),s[54]||(s[54]=n("h3",{id:"_6-1-算数运算符",tabindex:"-1"},[n("a",{class:"header-anchor",href:"#_6-1-算数运算符"},[n("span",null,"6.1 算数运算符")])],-1)),n("p",null,[s[3]||(s[3]=a("更多见文档 ",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_1-1-%E7%AE%97%E6%95%B0%E8%BF%90%E7%AE%97%E7%AC%A6"},{default:e(()=>[...s[2]||(s[2]=[a("Arithmetic Operators and Functions",-1)])]),_:1})]),s[55]||(s[55]=p('<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, - s1, s2, + s2, s1 + s2, s1 - s2, s1 * s2, s1 / s2, s1 % s2 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></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="_6-2-比较运算符" tabindex="-1"><a class="header-anchor" href="#_6-2-比较运算符"><span>6.2 比较运算符</span></a></h3>',2)),n("p",null,[s[5]||(s[5]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_1-2-%E6%AF%94%E8%BE%83%E8%BF%90%E7%AE%97%E7%AC%A6"},{default:e(()=>[...s[4]||(s[4]=[a("Comparison Operators and Functions",-1)])]),_:1})]),s[56]||(s[56]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#7F848E;font-style:italic;">-- Basic comparison operators;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> a, b, a </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">, a </span><span style="color:#56B6C2;"><=</span><span style="color:#ABB2BF;"> b, !(a </span><span style="color:#56B6C2;"><=</span><span style="color:#ABB2BF;"> b), a </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;"> && a </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> b </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">-- \`BETWEEN ... AND ...\` operator;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">between</span><span style="color:#D19A66;"> 36</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#C678DD;"> and</span><span style="color:#D19A66;"> 40</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">not</span><span style="color:#C678DD;"> between</span><span style="color:#D19A66;"> 36</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#C678DD;"> and</span><span style="color:#D19A66;"> 40</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">-- Fuzzy matching operator: Use \`Like\` for fuzzy matching;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#C678DD;"> like</span><span style="color:#98C379;"> '%cc%'</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.device </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#C678DD;"> like</span><span style="color:#98C379;"> '_b_'</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">-- Fuzzy matching operator: Use \`Regexp\` for fuzzy matching;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#ABB2BF;"> regexp </span><span style="color:#98C379;">'^[A-Za-z]+$'</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#ABB2BF;"> regexp </span><span style="color:#98C379;">'^[a-z]+$'</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 100</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> b, b </span><span style="color:#C678DD;">like</span><span style="color:#98C379;"> '1%'</span><span style="color:#ABB2BF;">, b regexp </span><span style="color:#98C379;">'[0-2]'</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">-- \`IS NULL\` operator;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">is</span><span style="color:#C678DD;"> null</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">is not null</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;">-- \`IN\` operator;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">in</span><span style="color:#ABB2BF;"> (</span><span style="color:#98C379;">'200'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'300'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'400'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'500'</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">not</span><span style="color:#C678DD;"> in</span><span style="color:#ABB2BF;"> (</span><span style="color:#98C379;">'200'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'300'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'400'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'500'</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> a, a </span><span style="color:#C678DD;">in</span><span style="color:#ABB2BF;"> (</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></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="_6-3-逻辑运算符" tabindex="-1"><a class="header-anchor" href="#_6-3-逻辑运算符"><span>6.3 逻辑运算符</span></a></h3>`,2)),n("p",null,[s[7]||(s[7]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_1-3-%E9%80%BB%E8%BE%91%E8%BF%90%E7%AE%97%E7%AC%A6"},{default:e(()=>[...s[6]||(s[6]=[a("Logical Operators",-1)])]),_:1})]),s[57]||(s[57]=p('<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> a, b, a </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">, a </span><span style="color:#56B6C2;"><=</span><span style="color:#ABB2BF;"> b, !(a </span><span style="color:#56B6C2;"><=</span><span style="color:#ABB2BF;"> b), a </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;"> && a </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> b </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></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="_7-内置函数" tabindex="-1"><a class="header-anchor" href="#_7-内置函数"><span>7. 内置函数</span></a></h2>',2)),n("p",null,[s[9]||(s[9]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-%E5%86%85%E7%BD%AE%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[8]||(s[8]=[a("Operator-and-Expression",-1)])]),_:1})]),s[58]||(s[58]=n("h3",{id:"_7-1-aggregate-functions",tabindex:"-1"},[n("a",{class:"header-anchor",href:"#_7-1-aggregate-functions"},[n("span",null,"7.1 Aggregate Functions")])],-1)),n("p",null,[s[11]||(s[11]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-1-%E8%81%9A%E5%90%88%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[10]||(s[10]=[a("Aggregate Functions",-1)])]),_:1})]),s[59]||(s[59]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> count_if(s1</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;"> & s2</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">), count_if(s1</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;"> & s2</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">db</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> count_if(s1</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;"> & s2</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'ignoreNull'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'false'</span><span style="color:#ABB2BF;">), count_if(s1</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;"> & s2</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'ignoreNull'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'false'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">db</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> time_duration(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">db</span><span style="color:#ABB2BF;">.d1;</span></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="_7-2-算数函数" tabindex="-1"><a class="header-anchor" href="#_7-2-算数函数"><span>7.2 算数函数</span></a></h3>`,2)),n("p",null,[s[13]||(s[13]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-2-%E6%95%B0%E5%AD%A6%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[12]||(s[12]=[a("Arithmetic Operators and Functions",-1)])]),_:1})]),s[60]||(s[60]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">cos</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">tan</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">limit</span><span style="color:#D19A66;"> 5</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">1000</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s4,</span><span style="color:#56B6C2;">round</span><span style="color:#ABB2BF;">(s4),</span><span style="color:#56B6C2;">round</span><span style="color:#ABB2BF;">(s4,</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">),</span><span style="color:#56B6C2;">round</span><span style="color:#ABB2BF;">(s4,-</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></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="_7-3-比较函数" tabindex="-1"><a class="header-anchor" href="#_7-3-比较函数"><span>7.3 比较函数</span></a></h3>`,2)),n("p",null,[s[15]||(s[15]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-3-%E6%AF%94%E8%BE%83%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[14]||(s[14]=[a("Comparison Operators and Functions",-1)])]),_:1})]),s[61]||(s[61]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ts, on_off(ts, </span><span style="color:#98C379;">'threshold'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ts, in_range(ts, </span><span style="color:#98C379;">'lower'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'upper'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></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="_7-4-字符串处理函数" tabindex="-1"><a class="header-anchor" href="#_7-4-字符串处理函数"><span>7.4 字符串处理函数</span></a></h3>`,2)),n("p",null,[s[17]||(s[17]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-4-%E5%AD%97%E7%AC%A6%E4%B8%B2%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[16]||(s[16]=[a("String Processing",-1)])]),_:1})]),s[62]||(s[62]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, string_contains(s1, </span><span style="color:#98C379;">'s'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'warn'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d4;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, string_matches(s1, </span><span style="color:#98C379;">'regex'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'[^\\\\s]+37229'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d4;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#C678DD;">length</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#C678DD;">locate</span><span style="color:#ABB2BF;">(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#C678DD;">locate</span><span style="color:#ABB2BF;">(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"reverse"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"true"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, startswith(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, endswith(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2, </span><span style="color:#56B6C2;">concat</span><span style="color:#ABB2BF;">(s1, s2, </span><span style="color:#98C379;">"target1"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"IoT"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"target2"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"DB"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2, </span><span style="color:#56B6C2;">concat</span><span style="color:#ABB2BF;">(s1, s2, </span><span style="color:#98C379;">"target1"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"IoT"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"target2"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"DB"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"series_behind"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"true"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">substring</span><span style="color:#ABB2BF;">(s1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> for</span><span style="color:#D19A66;"> 2</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">replace</span><span style="color:#ABB2BF;">(s1, </span><span style="color:#98C379;">'es'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'tt'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">upper</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">lower</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s3, </span><span style="color:#56B6C2;">trim</span><span style="color:#ABB2BF;">(s3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2, strcmp(s1, s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> strreplace(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">","</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"replace"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"/"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"limit"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"2"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> strreplace(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">","</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"replace"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"/"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"limit"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"offset"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"reverse"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"true"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> regexmatch(s1, </span><span style="color:#98C379;">"regex"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"\\d+\\.\\d+\\.\\d+\\.\\d+"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"group"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> regexreplace(s1, </span><span style="color:#98C379;">"regex"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"192\\.168\\.0\\.(\\d+)"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"replace"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"cluster-$1"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"limit"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> regexsplit(s1, </span><span style="color:#98C379;">"regex"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">","</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"index"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"-1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> regexsplit(s1, </span><span style="color:#98C379;">"regex"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">","</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"index"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"3"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></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="_7-5-数据类型转换函数" tabindex="-1"><a class="header-anchor" href="#_7-5-数据类型转换函数"><span>7.5 数据类型转换函数</span></a></h3>`,2)),n("p",null,[s[19]||(s[19]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-5-%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B%E8%BD%AC%E6%8D%A2%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[18]||(s[18]=[a("Data Type Conversion Function",-1)])]),_:1})]),s[63]||(s[63]=p('<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#56B6C2;"> cast</span><span style="color:#ABB2BF;">(s1 </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> INT32) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">;</span></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="_7-6-常序列生成函数" tabindex="-1"><a class="header-anchor" href="#_7-6-常序列生成函数"><span>7.6 常序列生成函数</span></a></h3>',2)),n("p",null,[s[21]||(s[21]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-6-%E5%B8%B8%E5%BA%8F%E5%88%97%E7%94%9F%E6%88%90%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[20]||(s[20]=[a("Constant Timeseries Generating Functions",-1)])]),_:1})]),s[64]||(s[64]=p('<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2, const(s1, </span><span style="color:#98C379;">'value'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'1024'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'INT64'</span><span style="color:#ABB2BF;">), </span><span style="color:#56B6C2;">pi</span><span style="color:#ABB2BF;">(s2), e(s1, s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></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="_7-7-选择函数" tabindex="-1"><a class="header-anchor" href="#_7-7-选择函数"><span>7.7 选择函数</span></a></h3>',2)),n("p",null,[s[23]||(s[23]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-7-%E9%80%89%E6%8B%A9%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[22]||(s[22]=[a("Selector Functions",-1)])]),_:1})]),s[65]||(s[65]=p('<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, top_k(s1, </span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">), bottom_k(s1, </span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d2 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">-10T20:</span><span style="color:#D19A66;">36</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">15</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">530</span><span style="color:#ABB2BF;">+</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></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="_7-8-区间查询函数" tabindex="-1"><a class="header-anchor" href="#_7-8-区间查询函数"><span>7.8 区间查询函数</span></a></h3>',2)),n("p",null,[s[25]||(s[25]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-8-%E5%8C%BA%E9%97%B4%E6%9F%A5%E8%AF%A2%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[24]||(s[24]=[a("Continuous Interval Functions",-1)])]),_:1})]),s[66]||(s[66]=p('<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, zero_count(s1), non_zero_count(s2), zero_duration(s3), non_zero_duration(s4) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2;</span></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="_7-9-趋势计算函数" tabindex="-1"><a class="header-anchor" href="#_7-9-趋势计算函数"><span>7.9 趋势计算函数</span></a></h3>',2)),n("p",null,[s[27]||(s[27]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-9-%E8%B6%8B%E5%8A%BF%E8%AE%A1%E7%AE%97%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[26]||(s[26]=[a("Variation Trend Calculation Functions",-1)])]),_:1})]),s[67]||(s[67]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, time_difference(s1), </span><span style="color:#56B6C2;">difference</span><span style="color:#ABB2BF;">(s1), non_negative_difference(s1), derivative(s1), non_negative_derivative(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">limit</span><span style="color:#D19A66;"> 5</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">1000</span><span style="color:#ABB2BF;">; </span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> DIFF(s1), DIFF(s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> DIFF(s1, </span><span style="color:#98C379;">'ignoreNull'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'false'</span><span style="color:#ABB2BF;">), DIFF(s2, </span><span style="color:#98C379;">'ignoreNull'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'false'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></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="_7-10-采样函数" tabindex="-1"><a class="header-anchor" href="#_7-10-采样函数"><span>7.10 采样函数</span></a></h3>`,2)),n("p",null,[s[29]||(s[29]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-10-%E9%87%87%E6%A0%B7%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[28]||(s[28]=[a("Sample Functions",-1)])]),_:1}),s[30]||(s[30]=a("。",-1))]),s[68]||(s[68]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> equal_size_bucket_random_sample(temperature,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> random_sample </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> equal_size_bucket_agg_sample(temperature, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'avg'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_avg, equal_size_bucket_agg_sample(temperature, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'max'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_max, equal_size_bucket_agg_sample(temperature,</span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'min'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_min, equal_size_bucket_agg_sample(temperature, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'sum'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_sum, equal_size_bucket_agg_sample(temperature, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'extreme'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_extreme, equal_size_bucket_agg_sample(temperature, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'variance'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_variance </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> equal_size_bucket_m4_sample(temperature, </span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> M4_sample </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> equal_size_bucket_outlier_sample(temperature, </span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'avg'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'number'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> outlier_avg_sample, equal_size_bucket_outlier_sample(temperature, </span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'stendis'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'number'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> outlier_stendis_sample, equal_size_bucket_outlier_sample(temperature, </span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'cos'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'number'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> outlier_cos_sample, equal_size_bucket_outlier_sample(temperature, </span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'prenextdis'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'number'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> outlier_prenextdis_sample </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> M4(s1,</span><span style="color:#98C379;">'timeInterval'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'25'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'displayWindowBegin'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'displayWindowEnd'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'100'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">vehicle</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> M4(s1,</span><span style="color:#98C379;">'windowSize'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'10'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">vehicle</span><span style="color:#ABB2BF;">.d1;</span></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="_7-11-时间序列处理函数" tabindex="-1"><a class="header-anchor" href="#_7-11-时间序列处理函数"><span>7.11 时间序列处理函数</span></a></h3>`,2)),n("p",null,[s[32]||(s[32]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_2-11-%E6%97%B6%E9%97%B4%E5%BA%8F%E5%88%97%E5%A4%84%E7%90%86%E5%87%BD%E6%95%B0"},{default:e(()=>[...s[31]||(s[31]=[a("Time-Series",-1)])]),_:1})]),s[69]||(s[69]=p('<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> change_points(s1), change_points(s2), change_points(s3), change_points(s4), change_points(s5), change_points(s6) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">testChangePoints</span><span style="color:#ABB2BF;">.d1;</span></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="_8-数据质量函数库" tabindex="-1"><a class="header-anchor" href="#_8-数据质量函数库"><span>8. 数据质量函数库</span></a></h2>',2)),n("p",null,[s[34]||(s[34]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/UDF-Libraries.html"},{default:e(()=>[...s[33]||(s[33]=[a("UDF-Libraries",-1)])]),_:1})]),s[70]||(s[70]=n("h3",{id:"_8-1-数据质量",tabindex:"-1"},[n("a",{class:"header-anchor",href:"#_8-1-数据质量"},[n("span",null,"8.1 数据质量")])],-1)),n("p",null,[s[36]||(s[36]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/UDF-Libraries.html#%E6%95%B0%E6%8D%AE%E8%B4%A8%E9%87%8F"},{default:e(()=>[...s[35]||(s[35]=[a("Data-Quality",-1)])]),_:1})]),s[71]||(s[71]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;"># Completeness;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> completeness(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> completeness(s1,</span><span style="color:#98C379;">"window"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"15"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Consistency;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> consistency(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> consistency(s1,</span><span style="color:#98C379;">"window"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"15"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Timeliness;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> timeliness(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> timeliness(s1,</span><span style="color:#98C379;">"window"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"15"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Validity;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> Validity(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> Validity(s1,</span><span style="color:#98C379;">"window"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"15"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Accuracy;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> Accuracy(t1,t2,t3,m1,m2,m3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></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="_8-2-数据画像" tabindex="-1"><a class="header-anchor" href="#_8-2-数据画像"><span>8.2 数据画像</span></a></h3>`,2)),n("p",null,[s[38]||(s[38]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/UDF-Libraries.html#%E6%95%B0%E6%8D%AE%E7%94%BB%E5%83%8F"},{default:e(()=>[...s[37]||(s[37]=[a("Data-Profiling",-1)])]),_:1})]),s[72]||(s[72]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;"># ACF;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> acf(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Distinct</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select distinct</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Histogram</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> histogram</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">"min"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"max"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"20"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"count"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"10"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Integral;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> integral(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> integral(s1, </span><span style="color:#98C379;">"unit"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1m"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># IntegralAvg;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> integralavg(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Mad;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> mad(s0) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> mad(s0, </span><span style="color:#98C379;">"error"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.01"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Median;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> median(s0, </span><span style="color:#98C379;">"error"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.01"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MinMax;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> minmax(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Mode;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> mode(s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MvAvg;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> mvavg(s1, </span><span style="color:#98C379;">"window"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"3"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># PACF;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> pacf(s1, </span><span style="color:#98C379;">"lag"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"5"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Percentile;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> percentile(s0, </span><span style="color:#98C379;">"rank"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.2"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"error"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.01"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Quantile;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> quantile(s0, </span><span style="color:#98C379;">"rank"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.2"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"K"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"800"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Period</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> period</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d3;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># QLB;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> QLB(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Resample</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> resample</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">'every'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5m'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'interp'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'linear'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> resample</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">'every'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'30m'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'aggr'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'first'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> resample</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">'every'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'30m'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'start'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2021-03-06 15:00:00'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Sample</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> sample</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">'method'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'reservoir'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> sample</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">'method'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'isometric'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Segment;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> segment(s1, </span><span style="color:#98C379;">"error"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Skew;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> skew(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Spline;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> spline(s1, </span><span style="color:#98C379;">"points"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"151"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Spread;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> spread(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Stddev;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> stddev(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># ZScore;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> zscore(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></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="_8-3-异常检测" tabindex="-1"><a class="header-anchor" href="#_8-3-异常检测"><span>8.3 异常检测</span></a></h3>`,2)),n("p",null,[s[40]||(s[40]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/UDF-Libraries.html#%E5%BC%82%E5%B8%B8%E6%A3%80%E6%B5%8B"},{default:e(()=>[...s[39]||(s[39]=[a("Anomaly-Detection",-1)])]),_:1})]),s[73]||(s[73]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;"># IQR;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> iqr(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># KSigma;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ksigma(s1,</span><span style="color:#98C379;">"k"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1.0"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># LOF;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> lof(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><</span><span style="color:#D19A66;">1000</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> lof(s1, </span><span style="color:#98C379;">"method"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"series"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><</span><span style="color:#D19A66;">1000</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MissDetect;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> missdetect(s2,</span><span style="color:#98C379;">'minlen'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'10'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Range</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> range</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">"lower_bound"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"101.0"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"upper_bound"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"125.0"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># TwoSidedFilter;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> TwoSidedFilter(s0, </span><span style="color:#98C379;">'len'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'threshold'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.3'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Outlier;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> outlier(s1,</span><span style="color:#98C379;">"r"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"5.0"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"k"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"4"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"w"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"10"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"s"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"5"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MasterTrain;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> MasterTrain(lo,la,m_lo,m_la,</span><span style="color:#98C379;">'p'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'eta'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'1.0'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MasterDetect;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> MasterDetect(lo,la,m_lo,m_la,model,</span><span style="color:#98C379;">'output_type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'repair'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'p'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'eta'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'1.0'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> MasterDetect(lo,la,m_lo,m_la,model,</span><span style="color:#98C379;">'output_type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'anomaly'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'p'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'eta'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'1.0'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></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="_8-4-频域分析" tabindex="-1"><a class="header-anchor" href="#_8-4-频域分析"><span>8.4 频域分析</span></a></h3>`,2)),n("p",null,[s[42]||(s[42]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/UDF-Libraries.html#%E9%A2%91%E5%9F%9F%E5%88%86%E6%9E%90"},{default:e(()=>[...s[41]||(s[41]=[a("Frequency-Domain",-1)])]),_:1})]),s[74]||(s[74]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;"># Conv;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> conv(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Deconv;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> deconv(s3,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> deconv(s3,s2,</span><span style="color:#98C379;">'result'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'remainder'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># DWT;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> dwt(s1,</span><span style="color:#98C379;">"method"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"haar"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># FFT;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> fft(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> fft(s1, </span><span style="color:#98C379;">'result'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'real'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'compress'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.99'</span><span style="color:#ABB2BF;">), fft(s1, </span><span style="color:#98C379;">'result'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'imag'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'compress'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.99'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># HighPass;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> highpass(s1,</span><span style="color:#98C379;">'wpass'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.45'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># IFFT;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ifft(re, im, </span><span style="color:#98C379;">'interval'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'1m'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'start'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2021-01-01 00:00:00'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># LowPass;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> lowpass(s1,</span><span style="color:#98C379;">'wpass'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.45'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Envelope;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> envelope(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></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></div><h3 id="_8-5-数据匹配" tabindex="-1"><a class="header-anchor" href="#_8-5-数据匹配"><span>8.5 数据匹配</span></a></h3>`,2)),n("p",null,[s[44]||(s[44]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/UDF-Libraries.html#%E6%95%B0%E6%8D%AE%E5%8C%B9%E9%85%8D"},{default:e(()=>[...s[43]||(s[43]=[a("Data-Matching",-1)])]),_:1})]),s[75]||(s[75]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;"># Cov;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> cov(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># DTW;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> dtw(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Pearson;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> pearson(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># PtnSym;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ptnsym(s4, </span><span style="color:#98C379;">'window'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'threshold'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># XCorr;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> xcorr(s1, s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">;</span></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="_8-6-数据修复" tabindex="-1"><a class="header-anchor" href="#_8-6-数据修复"><span>8.6 数据修复</span></a></h3>`,2)),n("p",null,[s[46]||(s[46]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/UDF-Libraries.html#%E6%95%B0%E6%8D%AE%E4%BF%AE%E5%A4%8D"},{default:e(()=>[...s[45]||(s[45]=[a("Data-Repairing",-1)])]),_:1})]),s[76]||(s[76]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;"># TimestampRepair;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> timestamprepair(s1,</span><span style="color:#98C379;">'interval'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'10000'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> timestamprepair(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># ValueFill;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> valuefill(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> valuefill(s1,</span><span style="color:#98C379;">"method"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"previous"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># ValueRepair;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> valuerepair(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> valuerepair(s1,</span><span style="color:#98C379;">'method'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'LsGreedy'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MasterRepair;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> MasterRepair(t1,t2,t3,m1,m2,m3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># SeasonalRepair;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> seasonalrepair(s1,</span><span style="color:#98C379;">'period'</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> seasonalrepair(s1,</span><span style="color:#98C379;">'method'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'improved'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'period'</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2;</span></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="_8-7-序列发现" tabindex="-1"><a class="header-anchor" href="#_8-7-序列发现"><span>8.7 序列发现</span></a></h3>`,2)),n("p",null,[s[48]||(s[48]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/UDF-Libraries.html#%E5%BA%8F%E5%88%97%E5%8F%91%E7%8E%B0"},{default:e(()=>[...s[47]||(s[47]=[a("Series-Discovery",-1)])]),_:1})]),s[77]||(s[77]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;"># ConsecutiveSequences;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> consecutivesequences(s1,s2,</span><span style="color:#98C379;">'gap'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5m'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> consecutivesequences(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># ConsecutiveWindows;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> consecutivewindows(s1,s2,</span><span style="color:#98C379;">'length'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'10m'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1;</span></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="_8-8-机器学习" tabindex="-1"><a class="header-anchor" href="#_8-8-机器学习"><span>8.8 机器学习</span></a></h3>`,2)),n("p",null,[s[50]||(s[50]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/UDF-Libraries.html#%E6%9C%BA%E5%99%A8%E5%AD%A6%E4%B9%A0"},{default:e(()=>[...s[49]||(s[49]=[a("Machine-Learning",-1)])]),_:1})]),s[78]||(s[78]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;"># AR;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ar(s0,</span><span style="color:#98C379;">"p"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"2"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d0;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Representation;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> representation(s0,</span><span style="color:#98C379;">"tb"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"3"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"vb"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"2"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d0;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># RM;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> rm(s0, s1,</span><span style="color:#98C379;">"tb"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"3"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"vb"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"2"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d0;</span></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="_9-条件表达式" tabindex="-1"><a class="header-anchor" href="#_9-条件表达式"><span>9. 条件表达式</span></a></h2>`,2)),n("p",null,[s[52]||(s[52]=a("更多见文档",-1)),o(l,{to:"/zh/UserGuide/latest/SQL-Manual/Operator-and-Expression.html#_3-%E6%9D%A1%E4%BB%B6%E8%A1%A8%E8%BE%BE%E5%BC%8F"},{default:e(()=>[...s[51]||(s[51]=[a("Conditional Expressions",-1)])]),_:1})]),s[79]||(s[79]=p(`<div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> T, P, </span><span style="color:#C678DD;">case</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 1000</span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">T </span><span style="color:#C678DD;">and</span><span style="color:#ABB2BF;"> T</span><span style="color:#56B6C2;"><</span><span style="color:#D19A66;">1050</span><span style="color:#C678DD;"> and</span><span style="color:#D19A66;"> 1000000</span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">P </span><span style="color:#C678DD;">and</span><span style="color:#ABB2BF;"> P</span><span style="color:#56B6C2;"><</span><span style="color:#D19A66;">1100000</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "good!"</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#ABB2BF;"> T</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">1000</span><span style="color:#C678DD;"> or</span><span style="color:#ABB2BF;"> T</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">1050</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "bad temperature"</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#ABB2BF;"> P</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">1000000</span><span style="color:#C678DD;"> or</span><span style="color:#ABB2BF;"> P</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">1100000</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "bad pressure"</span></span> |
| <span class="line"><span style="color:#C678DD;">end</span><span style="color:#C678DD;"> as</span><span style="color:#98C379;"> \`result\`</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test1</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> str, </span><span style="color:#C678DD;">case</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#ABB2BF;"> str </span><span style="color:#C678DD;">like</span><span style="color:#98C379;"> "%cc%"</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "has cc"</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#ABB2BF;"> str </span><span style="color:#C678DD;">like</span><span style="color:#98C379;"> "%dd%"</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "has dd"</span></span> |
| <span class="line"><span style="color:#C678DD;">else</span><span style="color:#98C379;"> "no cc and dd"</span><span style="color:#C678DD;"> end</span><span style="color:#C678DD;"> as</span><span style="color:#98C379;"> \`result\`</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test2</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span></span> |
| <span class="line"><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">case</span><span style="color:#C678DD;"> when</span><span style="color:#ABB2BF;"> x</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">1</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> end</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#98C379;"> \`(-∞,1]\`</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">case</span><span style="color:#C678DD;"> when</span><span style="color:#D19A66;"> 1</span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">x </span><span style="color:#C678DD;">and</span><span style="color:#ABB2BF;"> x</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">3</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> end</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#98C379;"> \`(1,3]\`</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">case</span><span style="color:#C678DD;"> when</span><span style="color:#D19A66;"> 3</span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">x </span><span style="color:#C678DD;">and</span><span style="color:#ABB2BF;"> x</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">7</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> end</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#98C379;"> \`(3,7]\`</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">case</span><span style="color:#C678DD;"> when</span><span style="color:#D19A66;"> 7</span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">x </span><span style="color:#C678DD;">then</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> end</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#98C379;"> \`(7,+∞)\`</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test3</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> x, </span><span style="color:#C678DD;">case</span><span style="color:#ABB2BF;"> x </span><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "one"</span><span style="color:#C678DD;"> when</span><span style="color:#D19A66;"> 2</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "two"</span><span style="color:#C678DD;"> else</span><span style="color:#98C379;"> "other"</span><span style="color:#C678DD;"> end</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test4</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> x, </span><span style="color:#C678DD;">case</span><span style="color:#ABB2BF;"> x </span><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> then</span><span style="color:#ABB2BF;"> true </span><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 2</span><span style="color:#C678DD;"> then</span><span style="color:#ABB2BF;"> false </span><span style="color:#C678DD;">end</span><span style="color:#C678DD;"> as</span><span style="color:#98C379;"> \`result\`</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test4</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> x, </span><span style="color:#C678DD;">case</span><span style="color:#ABB2BF;"> x</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 1</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 2</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 222222222222222</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 3</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 3</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">3</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 4</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 4</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">4444444444444</span></span> |
| <span class="line"><span style="color:#C678DD;">end</span><span style="color:#C678DD;"> as</span><span style="color:#98C379;"> \`result\`</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test4</span><span style="color:#ABB2BF;">;</span></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="_10-触发器" tabindex="-1"><a class="header-anchor" href="#_10-触发器"><span>10. 触发器</span></a></h2><h3 id="_10-1-使用-sql-语句注册该触发器" tabindex="-1"><a class="header-anchor" href="#_10-1-使用-sql-语句注册该触发器"><span>10.1 使用 SQL 语句注册该触发器</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">// </span><span style="color:#C678DD;">Create</span><span style="color:#ABB2BF;"> Trigger</span></span> |
| <span class="line"><span style="color:#ABB2BF;">createTrigger</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> triggerType TRIGGER triggerName</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">identifier triggerEventClause </span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> pathPattern </span><span style="color:#C678DD;">AS</span><span style="color:#ABB2BF;"> className</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">STRING_LITERAL uriClause? triggerAttributeClause?</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">triggerType</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : STATELESS | STATEFUL</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">triggerEventClause</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : (</span><span style="color:#C678DD;">BEFORE</span><span style="color:#ABB2BF;"> | </span><span style="color:#C678DD;">AFTER</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">INSERT</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">uriClause</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">USING</span><span style="color:#ABB2BF;"> URI uri</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">uri</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : STRING_LITERAL</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">triggerAttributeClause</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">WITH</span><span style="color:#ABB2BF;"> LR_BRACKET triggerAttribute (COMMA triggerAttribute)* RR_BRACKET</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">triggerAttribute</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">key</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">attributeKey operator_eq </span><span style="color:#C678DD;">value</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">attributeValue</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></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><h4 id="sql-语句示例" tabindex="-1"><a class="header-anchor" href="#sql-语句示例"><span>SQL 语句示例</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> STATELESS TRIGGER triggerTest</span></span> |
| <span class="line"><span style="color:#C678DD;">BEFORE</span><span style="color:#C678DD;"> INSERT</span></span> |
| <span class="line"><span style="color:#C678DD;">ON</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.**</span></span> |
| <span class="line"><span style="color:#C678DD;">AS</span><span style="color:#98C379;"> 'org.apache.iotdb.trigger.ClusterAlertingExample'</span></span> |
| <span class="line"><span style="color:#C678DD;">USING</span><span style="color:#ABB2BF;"> URI </span><span style="color:#98C379;">'http://jar/ClusterAlertingExample.jar'</span></span> |
| <span class="line"><span style="color:#C678DD;">WITH</span><span style="color:#ABB2BF;"> (</span></span> |
| <span class="line"><span style="color:#98C379;"> "name"</span><span style="color:#56B6C2;"> =</span><span style="color:#98C379;"> "trigger"</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#98C379;"> "limit"</span><span style="color:#56B6C2;"> =</span><span style="color:#98C379;"> "100"</span></span> |
| <span class="line"><span style="color:#ABB2BF;">);</span></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="_10-2-卸载触发器" tabindex="-1"><a class="header-anchor" href="#_10-2-卸载触发器"><span>10.2 卸载触发器</span></a></h3><h4 id="卸载触发器的-sql-语法如下" tabindex="-1"><a class="header-anchor" href="#卸载触发器的-sql-语法如下"><span>卸载触发器的 SQL 语法如下：</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">// </span><span style="color:#C678DD;">Drop</span><span style="color:#ABB2BF;"> Trigger</span></span> |
| <span class="line"><span style="color:#ABB2BF;">dropTrigger</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">DROP</span><span style="color:#ABB2BF;"> TRIGGER triggerName</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">identifier</span></span> |
| <span class="line"><span style="color:#ABB2BF;">;</span></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="示例语句" tabindex="-1"><a class="header-anchor" href="#示例语句"><span>示例语句</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#C678DD;"> TRIGGER</span><span style="color:#ABB2BF;"> triggerTest1;</span></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="_10-3-查询触发器" tabindex="-1"><a class="header-anchor" href="#_10-3-查询触发器"><span>10.3 查询触发器</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">SHOW TRIGGERS;</span></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="_11-连续查询-continuous-query-cq" tabindex="-1"><a class="header-anchor" href="#_11-连续查询-continuous-query-cq"><span>11. 连续查询（Continuous Query, CQ）</span></a></h2><h3 id="_11-1-语法" tabindex="-1"><a class="header-anchor" href="#_11-1-语法"><span>11.1 语法</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> (CONTINUOUS QUERY | CQ) </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">cq_id</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#ABB2BF;">[</span><span style="color:#C678DD;">RESAMPLE</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#E06C75;"> [EVERY <every_interval>]</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#E06C75;"> [BOUNDARY <execution_boundary_time>]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [RANGE <start_time_offset>[, end_time_offset]</span><span style="color:#ABB2BF;">] </span></span> |
| <span class="line"><span style="color:#ABB2BF;">]</span></span> |
| <span class="line"><span style="color:#E06C75;">[TIMEOUT POLICY BLOCKED|DISCARD]</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> CLAUSE</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#ABB2BF;"> CLAUSE</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#ABB2BF;"> CLAUSE</span></span> |
| <span class="line"><span style="color:#E06C75;"> [WHERE CLAUSE]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [GROUP BY(<group_by_interval>[, <sliding_step>]</span><span style="color:#ABB2BF;">) </span><span style="color:#E06C75;">[, level = <level>]</span><span style="color:#ABB2BF;">]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [HAVING CLAUSE]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [FILL ({PREVIOUS | LINEAR | constant} (, interval=DURATION_LITERAL)?)]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [LIMIT rowLimit OFFSET rowOffset]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [ALIGN BY DEVICE]</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span></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="配置连续查询执行的周期性间隔" tabindex="-1"><a class="header-anchor" href="#配置连续查询执行的周期性间隔"><span>配置连续查询执行的周期性间隔</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY cq1</span></span> |
| <span class="line"><span style="color:#C678DD;">RESAMPLE</span><span style="color:#ABB2BF;"> EVERY 20s</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> max_value(temperature)</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max)</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*</span></span> |
| <span class="line"><span style="color:#C678DD;"> GROUP BY</span><span style="color:#ABB2BF;">(10s)</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> temperature_max </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*;</span></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><h4 id="配置连续查询的时间窗口大小" tabindex="-1"><a class="header-anchor" href="#配置连续查询的时间窗口大小"><span>配置连续查询的时间窗口大小</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY cq2</span></span> |
| <span class="line"><span style="color:#C678DD;">RESAMPLE</span><span style="color:#C678DD;"> RANGE</span><span style="color:#ABB2BF;"> 40s</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> max_value(temperature)</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max)</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*</span></span> |
| <span class="line"><span style="color:#C678DD;"> GROUP BY</span><span style="color:#ABB2BF;">(10s)</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> temperature_max </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*;</span></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><h4 id="同时配置连续查询执行的周期性间隔和时间窗口大小" tabindex="-1"><a class="header-anchor" href="#同时配置连续查询执行的周期性间隔和时间窗口大小"><span>同时配置连续查询执行的周期性间隔和时间窗口大小</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY cq3</span></span> |
| <span class="line"><span style="color:#C678DD;">RESAMPLE</span><span style="color:#ABB2BF;"> EVERY 20s </span><span style="color:#C678DD;">RANGE</span><span style="color:#ABB2BF;"> 40s</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> max_value(temperature)</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max)</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*</span></span> |
| <span class="line"><span style="color:#C678DD;"> GROUP BY</span><span style="color:#ABB2BF;">(10s)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> FILL(</span><span style="color:#D19A66;">100</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> temperature_max </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*;</span></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><h4 id="配置连续查询每次查询执行时间窗口的结束时间" tabindex="-1"><a class="header-anchor" href="#配置连续查询每次查询执行时间窗口的结束时间"><span>配置连续查询每次查询执行时间窗口的结束时间</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY cq4</span></span> |
| <span class="line"><span style="color:#C678DD;">RESAMPLE</span><span style="color:#ABB2BF;"> EVERY 20s </span><span style="color:#C678DD;">RANGE</span><span style="color:#ABB2BF;"> 40s, 20s</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> max_value(temperature)</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max)</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*</span></span> |
| <span class="line"><span style="color:#C678DD;"> GROUP BY</span><span style="color:#ABB2BF;">(10s)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> FILL(</span><span style="color:#D19A66;">100</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> temperature_max </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*;</span></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><h4 id="没有group-by-time子句的连续查询" tabindex="-1"><a class="header-anchor" href="#没有group-by-time子句的连续查询"><span>没有GROUP BY TIME子句的连续查询</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY cq5</span></span> |
| <span class="line"><span style="color:#C678DD;">RESAMPLE</span><span style="color:#ABB2BF;"> EVERY 20s</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> temperature + </span><span style="color:#D19A66;">1</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">precalculated_sg</span><span style="color:#ABB2BF;">.::(temperature)</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">precalculated_sg</span><span style="color:#ABB2BF;">.*.* align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></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="_11-2-连续查询的管理" tabindex="-1"><a class="header-anchor" href="#_11-2-连续查询的管理"><span>11.2 连续查询的管理</span></a></h3><h4 id="查询系统已有的连续查询" tabindex="-1"><a class="header-anchor" href="#查询系统已有的连续查询"><span>查询系统已有的连续查询</span></a></h4><p>展示集群中所有的已注册的连续查询</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">SHOW (CONTINUOUS QUERIES | CQS)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">SHOW CONTINUOUS QUERIES;</span></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="删除已有的连续查询" tabindex="-1"><a class="header-anchor" href="#删除已有的连续查询"><span>删除已有的连续查询</span></a></h4><p>删除指定的名为cq_id的连续查询：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#ABB2BF;"> (CONTINUOUS QUERY | CQ) </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">cq_id</span><span style="color:#56B6C2;">></span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY s1_count_cq;</span></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="作为子查询的替代品" tabindex="-1"><a class="header-anchor" href="#作为子查询的替代品"><span>作为子查询的替代品</span></a></h4><ol><li>创建一个连续查询</li></ol><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CQ s1_count_cq </span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1) </span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_count</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">count_s1</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d</span></span> |
| <span class="line"><span style="color:#C678DD;"> GROUP BY</span><span style="color:#ABB2BF;">(30m)</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span><span style="color:#ABB2BF;">;</span></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><ol><li>查询连续查询的结果</li></ol><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(count_s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_count</span><span style="color:#ABB2BF;">.d;</span></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="_12-用户自定义函数" tabindex="-1"><a class="header-anchor" href="#_12-用户自定义函数"><span>12. 用户自定义函数</span></a></h2><h3 id="_12-1-udfparameters" tabindex="-1"><a class="header-anchor" href="#_12-1-udfparameters"><span>12.1 UDFParameters</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> UDF(s1, s2, </span><span style="color:#98C379;">'key1'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'iotdb'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'key2'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'123.45'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d;</span></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="_12-2-udf-注册" tabindex="-1"><a class="header-anchor" href="#_12-2-udf-注册"><span>12.2 UDF 注册</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#C678DD;"> FUNCTION</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">UDF-</span><span style="color:#C678DD;">NAME</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> AS</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">UDF-CLASS-FULL-PATHNAME</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">USING</span><span style="color:#ABB2BF;"> URI URI-STRING)?</span></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="不指定uri" tabindex="-1"><a class="header-anchor" href="#不指定uri"><span>不指定URI</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#C678DD;"> FUNCTION</span><span style="color:#61AFEF;"> example</span><span style="color:#C678DD;"> AS</span><span style="color:#98C379;"> 'org.apache.iotdb.udf.UDTFExample'</span><span style="color:#ABB2BF;">;</span></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="指定uri" tabindex="-1"><a class="header-anchor" href="#指定uri"><span>指定URI</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#C678DD;"> FUNCTION</span><span style="color:#61AFEF;"> example</span><span style="color:#C678DD;"> AS</span><span style="color:#98C379;"> 'org.apache.iotdb.udf.UDTFExample'</span><span style="color:#C678DD;"> USING</span><span style="color:#ABB2BF;"> URI </span><span style="color:#98C379;">'http://jar/example.jar'</span><span style="color:#ABB2BF;">;</span></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="_12-3-udf-卸载" tabindex="-1"><a class="header-anchor" href="#_12-3-udf-卸载"><span>12.3 UDF 卸载</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#C678DD;"> FUNCTION</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">UDF-</span><span style="color:#C678DD;">NAME</span><span style="color:#56B6C2;">></span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#C678DD;"> FUNCTION</span><span style="color:#ABB2BF;"> example;</span></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="_12-4-udf-查询" tabindex="-1"><a class="header-anchor" href="#_12-4-udf-查询"><span>12.4 UDF 查询</span></a></h3><h4 id="带自定义输入参数的查询" tabindex="-1"><a class="header-anchor" href="#带自定义输入参数的查询"><span>带自定义输入参数的查询</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> example(s1, </span><span style="color:#98C379;">'key1'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'value1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'key2'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'value2'</span><span style="color:#ABB2BF;">), example(*, </span><span style="color:#98C379;">'key3'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'value3'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> example(s1, s2, </span><span style="color:#98C379;">'key1'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'value1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'key2'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'value2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></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="与其他查询的嵌套查询" tabindex="-1"><a class="header-anchor" href="#与其他查询的嵌套查询"><span>与其他查询的嵌套查询</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> s1, s2, example(s1, s2) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> *, example(*) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">DISABLE</span><span style="color:#ABB2BF;"> ALIGN;</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> s1 * example(* / s1 + s2) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> s1, s2, s1 + example(s1, s2), s1 - example(s1 + example(s1, s2) / s2) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></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="_12-5-查看所有注册的-udf" tabindex="-1"><a class="header-anchor" href="#_12-5-查看所有注册的-udf"><span>12.5 查看所有注册的 UDF</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">SHOW FUNCTIONS;</span></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="_13-权限管理" tabindex="-1"><a class="header-anchor" href="#_13-权限管理"><span>13. 权限管理</span></a></h2><h3 id="_13-1-用户与角色相关" tabindex="-1"><a class="header-anchor" href="#_13-1-用户与角色相关"><span>13.1 用户与角色相关</span></a></h3><ul><li>创建用户（需 MANAGE_USER 权限)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> USER </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">userName</span><span style="color:#56B6C2;">></span><span style="color:#56B6C2;"> <</span><span style="color:#C678DD;">password</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> USER user1 </span><span style="color:#98C379;">'passwd'</span><span style="color:#ABB2BF;">;</span></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>删除用户 (需 MANEGE_USER 权限)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#C678DD;"> USER</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">userName</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">DROP</span><span style="color:#ABB2BF;"> USER user1;</span></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>创建角色 (需 MANAGE_ROLE 权限)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#C678DD;"> ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">roleName</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">CREATE</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;"> role1;</span></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>删除角色 (需 MANAGE_ROLE 权限)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#C678DD;"> ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">roleName</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">DROP</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;"> role1;</span></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>赋予用户角色 (需 MANAGE_ROLE 权限)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">GRANT</span><span style="color:#C678DD;"> ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">ROLENAME</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> TO</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">USERNAME</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#C678DD;"> ROLE</span><span style="color:#C678DD;"> admin</span><span style="color:#C678DD;"> TO</span><span style="color:#ABB2BF;"> user1;</span></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>移除用户角色 (需 MANAGE_ROLE 权限)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">REVOKE</span><span style="color:#C678DD;"> ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">ROLENAME</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> FROM</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">USER</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#C678DD;"> ROLE</span><span style="color:#C678DD;"> admin</span><span style="color:#C678DD;"> FROM</span><span style="color:#ABB2BF;"> user1;</span></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>列出所有用户 (需 MANEGE_USER 权限)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">LIST USER;</span></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>列出所有角色 (需 MANAGE_ROLE 权限)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">LIST </span><span style="color:#C678DD;">ROLE</span><span style="color:#ABB2BF;">;</span></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>列出指定角色下所有用户 (需 MANEGE_USER 权限)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">LIST USER OF </span><span style="color:#C678DD;">ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">roleName</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: LIST USER OF </span><span style="color:#C678DD;">ROLE</span><span style="color:#ABB2BF;"> roleuser;</span></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>列出指定用户下所有角色</li></ul><p>用户可以列出自己的角色，但列出其他用户的角色需要拥有 MANAGE_ROLE 权限。</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">LIST </span><span style="color:#C678DD;">ROLE</span><span style="color:#ABB2BF;"> OF USER </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">username</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">; </span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: LIST </span><span style="color:#C678DD;">ROLE</span><span style="color:#ABB2BF;"> OF USER tempuser;</span></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>列出用户所有权限</li></ul><p>用户可以列出自己的权限信息，但列出其他用户的权限需要拥有 MANAGE_USER 权限。</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">LIST PRIVILEGES OF USER </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">username</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: LIST PRIVILEGES OF USER tempuser;</span></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>列出角色所有权限</li></ul><p>用户可以列出自己具有的角色的权限信息，列出其他角色的权限需要有 MANAGE_ROLE 权限。</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#ABB2BF;">LIST PRIVILEGES OF </span><span style="color:#C678DD;">ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">roleName</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: LIST PRIVILEGES OF </span><span style="color:#C678DD;">ROLE</span><span style="color:#ABB2BF;"> actor;</span></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>修改密码</li></ul><p>用户可以修改自己的密码，但修改其他用户密码需要具备MANAGE_USER 权限。</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#C678DD;"> USER</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">username</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> SET</span><span style="color:#C678DD;"> PASSWORD</span><span style="color:#56B6C2;"> <</span><span style="color:#C678DD;">password</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> USER tempuser </span><span style="color:#C678DD;">SET</span><span style="color:#C678DD;"> PASSWORD</span><span style="color:#98C379;"> 'newpwd'</span><span style="color:#ABB2BF;">;</span></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="_13-2-授权与取消授权" tabindex="-1"><a class="header-anchor" href="#_13-2-授权与取消授权"><span>13.2 授权与取消授权</span></a></h3><p>用户使用授权语句对赋予其他用户权限，语法如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">GRANT</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">PRIVILEGES</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> ON</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">PATHS</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> TO</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;">/USER </span><span style="color:#56B6C2;"><</span><span style="color:#C678DD;">NAME</span><span style="color:#56B6C2;">></span><span style="color:#E06C75;"> [WITH GRANT OPTION]</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#C678DD;"> READ</span><span style="color:#C678DD;"> ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">TO</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;"> role1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#ABB2BF;"> READ_DATA, WRITE_DATA </span><span style="color:#C678DD;">ON</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t1</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">TO</span><span style="color:#ABB2BF;"> USER user1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#ABB2BF;"> READ_DATA, WRITE_DATA </span><span style="color:#C678DD;">ON</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t1</span><span style="color:#ABB2BF;">.**,</span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t2</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">TO</span><span style="color:#ABB2BF;"> USER user1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#ABB2BF;"> MANAGE_ROLE </span><span style="color:#C678DD;">ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">TO</span><span style="color:#ABB2BF;"> USER user1 </span><span style="color:#C678DD;">WITH</span><span style="color:#C678DD;"> GRANT</span><span style="color:#C678DD;"> OPTION</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#ABB2BF;"> ALL </span><span style="color:#C678DD;">ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">TO</span><span style="color:#ABB2BF;"> USER user1 </span><span style="color:#C678DD;">WITH</span><span style="color:#C678DD;"> GRANT</span><span style="color:#C678DD;"> OPTION</span><span style="color:#ABB2BF;">;</span></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>用户使用取消授权语句可以将其他的权限取消，语法如下：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code class="language-sql"><span class="line"><span style="color:#C678DD;">REVOKE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">PRIVILEGES</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> ON</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">PATHS</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> FROM</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;">/USER </span><span style="color:#56B6C2;"><</span><span style="color:#C678DD;">NAME</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#C678DD;"> READ</span><span style="color:#C678DD;"> ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">FROM</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;"> role1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#ABB2BF;"> READ_DATA, WRITE_DATA </span><span style="color:#C678DD;">ON</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t1</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">FROM</span><span style="color:#ABB2BF;"> USER user1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#ABB2BF;"> READ_DATA, WRITE_DATA </span><span style="color:#C678DD;">ON</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t1</span><span style="color:#ABB2BF;">.**, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t2</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">FROM</span><span style="color:#ABB2BF;"> USER user1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#ABB2BF;"> MANAGE_ROLE </span><span style="color:#C678DD;">ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">FROM</span><span style="color:#ABB2BF;"> USER user1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#ABB2BF;"> ALL </span><span style="color:#C678DD;">ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">FROM</span><span style="color:#ABB2BF;"> USER user1;</span></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>`,97))])}const b=c(d,[["render",A]]),m=JSON.parse('{"path":"/zh/UserGuide/latest/SQL-Manual/SQL-Manual_apache.html","title":"SQL手册","lang":"zh-CN","frontmatter":{"description":"SQL手册 1. 元数据操作 1.1 数据库管理 创建数据库 查看数据库 删除数据库 统计数据库数量 1.2 时间序列管理 创建时间序列 简化版 错误提示 创建对齐时间序列 删除时间序列 查看时间序列 统计时间序列数量 标签点管理 重命名标签或属性 重新设置标签或属性的值 删除已经存在的标签或属性 添加新的标签 添加新的属性 更新插入别名，标签和属性 ...","head":[["script",{"type":"application/ld+json"},"{\\"@context\\":\\"https://schema.org\\",\\"@type\\":\\"Article\\",\\"headline\\":\\"SQL手册\\",\\"image\\":[\\"https://iotdb.apache.org/img/%E6%A8%A1%E6%9D%BF.png\\",\\"https://iotdb.apache.org/img/template.jpg\\"],\\"dateModified\\":\\"2026-03-20T01:47:29.000Z\\",\\"author\\":[]}"],["meta",{"property":"og:url","content":"https://iotdb.apache.org/zh/UserGuide/latest/SQL-Manual/SQL-Manual_apache.html"}],["meta",{"property":"og:site_name","content":"IoTDB Website"}],["meta",{"property":"og:title","content":"SQL手册"}],["meta",{"property":"og:description","content":"SQL手册 1. 元数据操作 1.1 数据库管理 创建数据库 查看数据库 删除数据库 统计数据库数量 1.2 时间序列管理 创建时间序列 简化版 错误提示 创建对齐时间序列 删除时间序列 查看时间序列 统计时间序列数量 标签点管理 重命名标签或属性 重新设置标签或属性的值 删除已经存在的标签或属性 添加新的标签 添加新的属性 更新插入别名，标签和属性 ..."}],["meta",{"property":"og:type","content":"article"}],["meta",{"property":"og:image","content":"https://iotdb.apache.org/img/%E6%A8%A1%E6%9D%BF.png"}],["meta",{"property":"og:locale","content":"zh-CN"}],["meta",{"property":"og:locale:alternate","content":"en-US"}],["meta",{"property":"og:updated_time","content":"2026-03-20T01:47:29.000Z"}],["meta",{"property":"article:modified_time","content":"2026-03-20T01:47:29.000Z"}],["link",{"rel":"alternate","hreflang":"en-us","href":"https://iotdb.apache.org/UserGuide/latest/SQL-Manual/SQL-Manual_apache.html"}]]},"git":{"createdTime":1688958677000,"updatedTime":1773971249000,"contributors":[{"name":"CritasWang","username":"CritasWang","email":"critas@outlook.com","commits":5,"url":"https://github.com/CritasWang"},{"name":"wanghui42","username":"wanghui42","email":"105700158+wanghui42@users.noreply.github.com","commits":8,"url":"https://github.com/wanghui42"},{"name":"Haonan","username":"Haonan","email":"hhaonan@outlook.com","commits":1,"url":"https://github.com/Haonan"},{"name":"LeiRui","username":"LeiRui","email":"33376433+LeiRui@users.noreply.github.com","commits":1,"url":"https://github.com/LeiRui"},{"name":"mal117","username":"mal117","email":"107627937+mal117@users.noreply.github.com","commits":2,"url":"https://github.com/mal117"},{"name":"Cpaulyz","username":"Cpaulyz","email":"43774645+Cpaulyz@users.noreply.github.com","commits":1,"url":"https://github.com/Cpaulyz"},{"name":"MiniSho","username":"MiniSho","email":"42286868+MiniSho@users.noreply.github.com","commits":1,"url":"https://github.com/MiniSho"},{"name":"YangCaiyin","username":"YangCaiyin","email":"ycycse@gmail.com","commits":2,"url":"https://github.com/YangCaiyin"},{"name":"Jackie Tien","username":"","email":"jackietien97@gmail.com","commits":1},{"name":"Zhijia Cao","username":"","email":"caozhijia@126.com","commits":1},{"name":"W1y1r","username":"W1y1r","email":"150988475+W1y1r@users.noreply.github.com","commits":4,"url":"https://github.com/W1y1r"},{"name":"shuwenwei","username":"shuwenwei","email":"55970239+shuwenwei@users.noreply.github.com","commits":1,"url":"https://github.com/shuwenwei"},{"name":"leto-b","username":"leto-b","email":"bingqian.bai@timecho.com","commits":9,"url":"https://github.com/leto-b"}]},"readingTime":{"minutes":27.17,"words":8152},"filePathRelative":"zh/UserGuide/latest/SQL-Manual/SQL-Manual_apache.md","autoDesc":true}');export{b as comp,m as data}; |
