| import{_ as r,r as o,o as i,c as d,d as a,e,b as t,f as n}from"./app-1758c693.js";const p={},l=n(`<h1 id="一、元数据操作" tabindex="-1"><a class="header-anchor" href="#一、元数据操作" aria-hidden="true">#</a> 一、元数据操作</h1><h2 id="_1、数据库管理" tabindex="-1"><a class="header-anchor" href="#_1、数据库管理" aria-hidden="true">#</a> 1、数据库管理</h2><h3 id="创建数据库" tabindex="-1"><a class="header-anchor" href="#创建数据库" aria-hidden="true">#</a> 创建数据库</h3><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">CREATE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>ln |
| |
| <span class="token keyword">CREATE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01 |
| <span class="token operator">></span> Msg: <span class="token number">300</span>: root<span class="token punctuation">.</span>ln has already been created <span class="token keyword">as</span> <span class="token keyword">database</span><span class="token punctuation">.</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="查看数据库" tabindex="-1"><a class="header-anchor" href="#查看数据库" aria-hidden="true">#</a> 查看数据库</h3><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">show</span> <span class="token keyword">databases</span> |
| <span class="token keyword">show</span> <span class="token keyword">databases</span> root<span class="token punctuation">.</span><span class="token operator">*</span> |
| <span class="token keyword">show</span> <span class="token keyword">databases</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="删除数据库" tabindex="-1"><a class="header-anchor" href="#删除数据库" aria-hidden="true">#</a> 删除数据库</h3><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">DELETE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>ln |
| <span class="token keyword">DELETE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>sgcc |
| <span class="token keyword">DELETE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="统计数据库数量" tabindex="-1"><a class="header-anchor" href="#统计数据库数量" aria-hidden="true">#</a> 统计数据库数量</h3><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code>count <span class="token keyword">databases</span> |
| count <span class="token keyword">databases</span> root<span class="token punctuation">.</span><span class="token operator">*</span> |
| count <span class="token keyword">databases</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span><span class="token operator">*</span> |
| count <span class="token keyword">databases</span> root<span class="token punctuation">.</span>sgcc |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="_2、时间序列管理" tabindex="-1"><a class="header-anchor" href="#_2、时间序列管理" aria-hidden="true">#</a> 2、时间序列管理</h2><h3 id="创建时间序列" tabindex="-1"><a class="header-anchor" href="#创建时间序列" aria-hidden="true">#</a> 创建时间序列</h3><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN |
| <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>RLE |
| <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span>hardware <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">TEXT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN |
| <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN |
| <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN |
| <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>RLE |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>简化版</li></ul><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">BOOLEAN</span> encoding<span class="token operator">=</span>PLAIN |
| <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature <span class="token keyword">FLOAT</span> encoding<span class="token operator">=</span>RLE |
| <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span>hardware <span class="token keyword">TEXT</span> encoding<span class="token operator">=</span>PLAIN |
| <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">BOOLEAN</span> encoding<span class="token operator">=</span>PLAIN |
| <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">BOOLEAN</span> encoding<span class="token operator">=</span>PLAIN |
| <span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature <span class="token keyword">FLOAT</span> encoding<span class="token operator">=</span>RLE |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>错误提示</li></ul><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">WITH</span> DATATYPE<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span> ENCODING<span class="token operator">=</span>TS_2DIFF |
| <span class="token operator">></span> error: encoding TS_2DIFF does <span class="token operator">not</span> support <span class="token keyword">BOOLEAN</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="创建对齐时间序列" tabindex="-1"><a class="header-anchor" href="#创建对齐时间序列" aria-hidden="true">#</a> 创建对齐时间序列</h3><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">CREATE</span> ALIGNED TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>GPS<span class="token punctuation">(</span>latitude <span class="token keyword">FLOAT</span> encoding<span class="token operator">=</span>PLAIN compressor<span class="token operator">=</span>SNAPPY<span class="token punctuation">,</span> longitude <span class="token keyword">FLOAT</span> encoding<span class="token operator">=</span>PLAIN compressor<span class="token operator">=</span>SNAPPY<span class="token punctuation">)</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="删除时间序列" tabindex="-1"><a class="header-anchor" href="#删除时间序列" aria-hidden="true">#</a> 删除时间序列</h3><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">delete</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> |
| <span class="token keyword">delete</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature<span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span>hardware |
| <span class="token keyword">delete</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span><span class="token operator">*</span> |
| <span class="token keyword">drop</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span><span class="token operator">*</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="查看时间序列" tabindex="-1"><a class="header-anchor" href="#查看时间序列" aria-hidden="true">#</a> 查看时间序列</h3><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">SHOW</span> TIMESERIES |
| <span class="token keyword">SHOW</span> TIMESERIES <span class="token operator"><</span>Path<span class="token operator">></span> |
| <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> |
| <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> |
| <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">limit</span> <span class="token number">10</span> <span class="token keyword">offset</span> <span class="token number">10</span> |
| <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> timeseries <span class="token keyword">contains</span> <span class="token string">'wf01.wt'</span> |
| <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> dataType<span class="token operator">=</span><span class="token keyword">FLOAT</span> |
| <span class="token keyword">SHOW</span> LATEST TIMESERIES |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="统计时间序列数量" tabindex="-1"><a class="header-anchor" href="#统计时间序列数量" aria-hidden="true">#</a> 统计时间序列数量</h3><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code>COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> |
| COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> |
| COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token keyword">status</span> |
| COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> |
| COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TIMESERIES <span class="token keyword">contains</span> <span class="token string">'sgcc'</span> |
| COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> DATATYPE <span class="token operator">=</span> INT64 |
| COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TAGS<span class="token punctuation">(</span>unit<span class="token punctuation">)</span> <span class="token keyword">contains</span> <span class="token string">'c'</span> |
| COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TAGS<span class="token punctuation">(</span>unit<span class="token punctuation">)</span> <span class="token operator">=</span> <span class="token string">'c'</span> |
| COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TIMESERIES <span class="token keyword">contains</span> <span class="token string">'sgcc'</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">level</span> <span class="token operator">=</span> <span class="token number">1</span> |
| COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">1</span> |
| COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">2</span> |
| COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">2</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="标签点管理" tabindex="-1"><a class="header-anchor" href="#标签点管理" aria-hidden="true">#</a> 标签点管理</h3><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1<span class="token punctuation">(</span>temprature<span class="token punctuation">)</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span> encoding<span class="token operator">=</span>RLE<span class="token punctuation">,</span> compression<span class="token operator">=</span>SNAPPY tags<span class="token punctuation">(</span>tag1<span class="token operator">=</span>v1<span class="token punctuation">,</span> tag2<span class="token operator">=</span>v2<span class="token punctuation">)</span> attributes<span class="token punctuation">(</span>attr1<span class="token operator">=</span>v1<span class="token punctuation">,</span> attr2<span class="token operator">=</span>v2<span class="token punctuation">)</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><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-ext="sql"><pre class="language-sql"><code><span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">RENAME</span> tag1 <span class="token keyword">TO</span> newTag1 |
| </code></pre><div class="line-numbers" aria-hidden="true"><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-ext="sql"><pre class="language-sql"><code><span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">SET</span> newTag1<span class="token operator">=</span>newV1<span class="token punctuation">,</span> attr1<span class="token operator">=</span>newV1 |
| </code></pre><div class="line-numbers" aria-hidden="true"><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-ext="sql"><pre class="language-sql"><code><span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">DROP</span> tag1<span class="token punctuation">,</span> tag2 |
| </code></pre><div class="line-numbers" aria-hidden="true"><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-ext="sql"><pre class="language-sql"><code><span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">ADD</span> TAGS tag3<span class="token operator">=</span>v3<span class="token punctuation">,</span> tag4<span class="token operator">=</span>v4 |
| </code></pre><div class="line-numbers" aria-hidden="true"><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-ext="sql"><pre class="language-sql"><code><span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">ADD</span> ATTRIBUTES attr3<span class="token operator">=</span>v3<span class="token punctuation">,</span> attr4<span class="token operator">=</span>v4 |
| </code></pre><div class="line-numbers" aria-hidden="true"><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-ext="sql"><pre class="language-sql"><code><span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 UPSERT ALIAS<span class="token operator">=</span>newAlias TAGS<span class="token punctuation">(</span>tag2<span class="token operator">=</span>newV2<span class="token punctuation">,</span> tag3<span class="token operator">=</span>v3<span class="token punctuation">)</span> ATTRIBUTES<span class="token punctuation">(</span>attr3<span class="token operator">=</span>v3<span class="token punctuation">,</span> attr4<span class="token operator">=</span>v4<span class="token punctuation">)</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><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-ext="sql"><pre class="language-sql"><code><span class="token keyword">SHOW</span> TIMESERIES <span class="token punctuation">(</span><span class="token operator"><</span><span class="token identifier"><span class="token punctuation">\`</span>PathPattern<span class="token punctuation">\`</span></span><span class="token operator">></span><span class="token punctuation">)</span>? timeseriesWhereClause |
| </code></pre><div class="line-numbers" aria-hidden="true"><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-ext="sql"><pre class="language-sql"><code><span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span>hardware <span class="token keyword">ADD</span> TAGS unit<span class="token operator">=</span>c |
| <span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">ADD</span> TAGS description<span class="token operator">=</span>test1 |
| <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> TAGS<span class="token punctuation">(</span>unit<span class="token punctuation">)</span><span class="token operator">=</span><span class="token string">'c'</span> |
| <span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> TAGS<span class="token punctuation">(</span>description<span class="token punctuation">)</span> <span class="token keyword">contains</span> <span class="token string">'test1'</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></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-ext="sql"><pre class="language-sql"><code>COUNT TIMESERIES <span class="token punctuation">(</span><span class="token operator"><</span><span class="token identifier"><span class="token punctuation">\`</span>PathPattern<span class="token punctuation">\`</span></span><span class="token operator">></span><span class="token punctuation">)</span>? timeseriesWhereClause |
| COUNT TIMESERIES <span class="token punctuation">(</span><span class="token operator"><</span><span class="token identifier"><span class="token punctuation">\`</span>PathPattern<span class="token punctuation">\`</span></span><span class="token operator">></span><span class="token punctuation">)</span>? timeseriesWhereClause <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token operator"><</span><span class="token keyword">INTEGER</span><span class="token operator">></span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><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-ext="sql"><pre class="language-sql"><code>count timeseries |
| count timeseries root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> TAGS<span class="token punctuation">(</span>unit<span class="token punctuation">)</span><span class="token operator">=</span><span class="token string">'c'</span> |
| count timeseries root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> TAGS<span class="token punctuation">(</span>unit<span class="token punctuation">)</span><span class="token operator">=</span><span class="token string">'c'</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">level</span> <span class="token operator">=</span> <span class="token number">2</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>创建对齐时间序列：</p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">create</span> aligned timeseries root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1<span class="token punctuation">(</span>s1 INT32 tags<span class="token punctuation">(</span>tag1<span class="token operator">=</span>v1<span class="token punctuation">,</span> tag2<span class="token operator">=</span>v2<span class="token punctuation">)</span> attributes<span class="token punctuation">(</span>attr1<span class="token operator">=</span>v1<span class="token punctuation">,</span> attr2<span class="token operator">=</span>v2<span class="token punctuation">)</span><span class="token punctuation">,</span> s2 <span class="token keyword">DOUBLE</span> tags<span class="token punctuation">(</span>tag3<span class="token operator">=</span>v3<span class="token punctuation">,</span> tag4<span class="token operator">=</span>v4<span class="token punctuation">)</span> attributes<span class="token punctuation">(</span>attr3<span class="token operator">=</span>v3<span class="token punctuation">,</span> attr4<span class="token operator">=</span>v4<span class="token punctuation">)</span><span class="token punctuation">)</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>支持查询：</p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">show</span> timeseries <span class="token keyword">where</span> TAGS<span class="token punctuation">(</span>tag1<span class="token punctuation">)</span><span class="token operator">=</span><span class="token string">'v1'</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h2 id="_3、时间序列路径管理" tabindex="-1"><a class="header-anchor" href="#_3、时间序列路径管理" aria-hidden="true">#</a> 3、时间序列路径管理</h2><h3 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" aria-hidden="true">#</a> 查看路径的所有子路径</h3><p>SHOW CHILD PATHS pathPattern</p><ul><li>查询 root.ln 的下一层：show child paths root.ln</li><li>查询形如 root.xx.xx.xx 的路径：show child paths root.<em>.</em></li></ul><h3 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" aria-hidden="true">#</a> 查看路径的所有子节点</h3><p>SHOW CHILD NODES pathPattern</p><ul><li>查询 root 的下一层：show child nodes root</li><li>查询 root.ln 的下一层 ：show child nodes root.ln</li></ul><h3 id="查看设备" tabindex="-1"><a class="header-anchor" href="#查看设备" aria-hidden="true">#</a> 查看设备</h3><p>IoTDB> show devices</p><p>IoTDB> show devices root.ln.**</p><h4 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" aria-hidden="true">#</a> 查看设备及其 database 信息</h4><p>IoTDB> show devices with database</p><p>IoTDB> show devices root.ln.** with database</p><h3 id="统计节点数" tabindex="-1"><a class="header-anchor" href="#统计节点数" aria-hidden="true">#</a> 统计节点数</h3><p>IoTDB > COUNT NODES root.** LEVEL=2</p><p>IoTDB > COUNT NODES root.ln.** LEVEL=2</p><p>IoTDB > COUNT NODES root.ln.wf01.* LEVEL=3</p><p>IoTDB > COUNT NODES root.**.temperature LEVEL=3</p><h3 id="统计设备数量" tabindex="-1"><a class="header-anchor" href="#统计设备数量" aria-hidden="true">#</a> 统计设备数量</h3><p>IoTDB> show devices</p><p>IoTDB> count devices</p><p>IoTDB> count devices root.ln.**</p><h2 id="_4、设备模板管理" tabindex="-1"><a class="header-anchor" href="#_4、设备模板管理" aria-hidden="true">#</a> 4、设备模板管理</h2><figure><img src="https://timechor.feishu.cn/space/api/box/stream/download/asynccode/?code=NzhkYzkzZDM0MjQxNDJlNmU5YWVhNWJkM2E3NzZmYWZfcllzQUZWYVpQMk1FRWVhSTlpQmRtblhYZmtQbnZqUGxfVG9rZW46VEJXbGJOWWJub0V5OWV4Sk1wZ2N6YmVXbkRlXzE2ODU0MzI4MDM6MTY4NTQzNjQwM19WNA" alt="img" tabindex="0" loading="lazy"><figcaption>img</figcaption></figure>`,75),c={href:"http://root.sg",target:"_blank",rel:"noopener noreferrer"},h=n(`<p>Create device root.sg.d1</p><figure><img src="https://timechor.feishu.cn/space/api/box/stream/download/asynccode/?code=Y2ZkMzUyMTAwMTJkZmZjOTdiODZmZmM4YjE1NzUzYWFfTGZ0T3lkOG1BSTJTY3ZMRWtsMElQcWdNYk01MVpBTDJfVG9rZW46Rllua2JBZDlDb3Y0RTJ4Nk14d2NITE9jbkNoXzE2ODU0MzI4MDM6MTY4NTQzNjQwM19WNA" alt="img" tabindex="0" loading="lazy"><figcaption>img</figcaption></figure><h3 id="创建元数据模板" tabindex="-1"><a class="header-anchor" href="#创建元数据模板" aria-hidden="true">#</a> 创建元数据模板</h3><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>CREATE SCHEMA TEMPLATE <templateName> ALIGNED? '(' <measurementId> <attributeClauses> [',' <measurementId> <attributeClauses>]+ ')' |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>创建包含两个非对齐序列的元数据模板</p><p>IoTDB> create schema template t1 (temperature FLOAT encoding=RLE, status BOOLEAN encoding=PLAIN compression=SNAPPY)</p><p>创建包含一组对齐序列的元数据模板</p><p>IoTDB> create schema template t2 aligned (lat FLOAT encoding=Gorilla, lon FLOAT encoding=Gorilla)</p><h3 id="挂载元数据模板" tabindex="-1"><a class="header-anchor" href="#挂载元数据模板" aria-hidden="true">#</a> 挂载元数据模板</h3><p>IoTDB> set SCHEMA TEMPLATE t1 to root.sg1</p><h3 id="激活元数据模板" tabindex="-1"><a class="header-anchor" href="#激活元数据模板" aria-hidden="true">#</a> 激活元数据模板</h3><p>IoTDB> create timeseries using SCHEMA TEMPLATE on root.sg1.d1</p><p>IoTDB> set SCHEMA TEMPLATE t1 to root.sg1.d1</p><p>IoTDB> set SCHEMA TEMPLATE t2 to root.sg1.d2</p><p>IoTDB> create timeseries using schema template on root.sg1.d1</p><p>IoTDB> create timeseries using schema template on root.sg1.d2</p><h3 id="查看元数据模板" tabindex="-1"><a class="header-anchor" href="#查看元数据模板" aria-hidden="true">#</a> 查看元数据模板</h3><p>IoTDB> show schema templates</p><ul><li>查看某个元数据模板下的物理量</li></ul><p>IoTDB> show nodes in schema template t1</p><ul><li>查看挂载了某个元数据模板的路径</li></ul><p>IoTDB> show paths set schema template t1</p><ul><li>查看使用了某个元数据模板的路径（即模板在该路径上已激活，序列已创建）</li></ul><p>IoTDB> show paths using schema template t1</p><p>IoTDB> show devices using schema template t1</p><h3 id="解除元数据模板" tabindex="-1"><a class="header-anchor" href="#解除元数据模板" aria-hidden="true">#</a> 解除元数据模板</h3><p>IoTDB> delete timeseries of schema template t1 from root.sg1.d1</p><p>IoTDB> deactivate schema template t1 from root.sg1.d1</p><p>批量处理</p><p>IoTDB> delete timeseries of schema template t1 from root.sg1.<em>, root.sg2.</em></p><p>IoTDB> deactivate schema template t1 from root.sg1.<em>, root.sg2.</em></p><h3 id="卸载元数据模板" tabindex="-1"><a class="header-anchor" href="#卸载元数据模板" aria-hidden="true">#</a> 卸载元数据模板</h3><p>IoTDB> unset schema template t1 from root.sg1.d1</p><h3 id="删除元数据模板" tabindex="-1"><a class="header-anchor" href="#删除元数据模板" aria-hidden="true">#</a> 删除元数据模板</h3><p>IoTDB> drop schema template t1</p><h2 id="_5、数据存活时间管理" tabindex="-1"><a class="header-anchor" href="#_5、数据存活时间管理" aria-hidden="true">#</a> 5、数据存活时间管理</h2><h3 id="设置-ttl" tabindex="-1"><a class="header-anchor" href="#设置-ttl" aria-hidden="true">#</a> 设置 TTL</h3><p>IoTDB> set ttl to root.ln 3600000</p><p>IoTDB> set ttl to root.sgcc.** 3600000</p><p>IoTDB> set ttl to root.** 3600000</p><h3 id="取消-ttl" tabindex="-1"><a class="header-anchor" href="#取消-ttl" aria-hidden="true">#</a> 取消 TTL</h3><p>IoTDB> unset ttl to root.ln</p><p>IoTDB> unset ttl to root.sgcc.**</p><p>IoTDB> unset ttl to root.**</p><h3 id="显示-ttl" tabindex="-1"><a class="header-anchor" href="#显示-ttl" aria-hidden="true">#</a> 显示 TTL</h3><p>IoTDB> SHOW ALL TTL</p><p>IoTDB> SHOW TTL ON StorageGroupNames</p><h1 id="写入数据" tabindex="-1"><a class="header-anchor" href="#写入数据" aria-hidden="true">#</a> 写入数据</h1><h2 id="_1、写入单列数据" tabindex="-1"><a class="header-anchor" href="#_1、写入单列数据" aria-hidden="true">#</a> 1、写入单列数据</h2><p>IoTDB > insert into root.ln.wf02.wt02(timestamp,status) values(1,true)</p><p>IoTDB > insert into root.ln.wf02.wt02(timestamp,hardware) values(1, 'v1'),(2, 'v1')</p><h2 id="_2、写入多列数据" tabindex="-1"><a class="header-anchor" href="#_2、写入多列数据" aria-hidden="true">#</a> 2、写入多列数据</h2><p>IoTDB > insert into root.ln.wf02.wt02(timestamp, status, hardware) values (2, false, 'v2')</p><p>IoTDB > insert into root.ln.wf02.wt02(timestamp, status, hardware) VALUES (3, false, 'v3'),(4, true, 'v4')</p><h2 id="_3、使用服务器时间戳" tabindex="-1"><a class="header-anchor" href="#_3、使用服务器时间戳" aria-hidden="true">#</a> 3、使用服务器时间戳</h2><p>IoTDB > insert into root.ln.wf02.wt02(status, hardware) values (false, 'v2')</p><h2 id="_4、写入对齐时间序列数据" tabindex="-1"><a class="header-anchor" href="#_4、写入对齐时间序列数据" aria-hidden="true">#</a> 4、写入对齐时间序列数据</h2><p>IoTDB > create aligned timeseries root.sg1.d1(s1 INT32, s2 DOUBLE)</p><p>IoTDB > insert into root.sg1.d1(timestamp, s1, s2) aligned values(1, 1, 1)</p><p>IoTDB > insert into root.sg1.d1(timestamp, s1, s2) aligned values(2, 2, 2), (3, 3, 3)</p><p>IoTDB > select * from root.sg1.d1</p><h2 id="_5、加载-tsfile-文件数据" tabindex="-1"><a class="header-anchor" href="#_5、加载-tsfile-文件数据" aria-hidden="true">#</a> 5、加载 TsFile 文件数据</h2><p>load '<path/dir>' [sglevel=int][verify=true/false][onSuccess=delete/none]</p><h3 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" aria-hidden="true">#</a> 通过指定文件路径(绝对路径)加载单 tsfile 文件</h3><ul><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile'</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=true</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=false</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' sglevel=1</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' onSuccess=delete</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=true sglevel=1</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=false sglevel=1</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=true onSuccess=none</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' verify=false sglevel=1 onSuccess=delete</code></li></ul><h3 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" aria-hidden="true">#</a> 通过指定文件夹路径(绝对路径)批量加载文件</h3><ul><li><code>load '/Users/Desktop/data'</code></li><li><code>load '/Users/Desktop/data' verify=false</code></li><li><code>load '/Users/Desktop/data' verify=true</code></li><li><code>load '/Users/Desktop/data' verify=true sglevel=1</code></li><li><code>load '/Users/Desktop/data' verify=false sglevel=1 onSuccess=delete</code></li></ul><h1 id="删除数据" tabindex="-1"><a class="header-anchor" href="#删除数据" aria-hidden="true">#</a> 删除数据</h1><h2 id="_1、删除单列数据" tabindex="-1"><a class="header-anchor" href="#_1、删除单列数据" aria-hidden="true">#</a> 1、删除单列数据</h2><p>delete from root.ln.wf02.wt02.status where time<=2017-11-01T16:26:00;</p><p>delete from root.ln.wf02.wt02.status where time>=2017-01-01T00:00:00 and time<=2017-11-01T16:26:00;</p><p>delete from root.ln.wf02.wt02.status where time < 10</p><p>delete from root.ln.wf02.wt02.status where time <= 10</p><p>delete from root.ln.wf02.wt02.status where time < 20 and time > 10</p><p>delete from root.ln.wf02.wt02.status where time <= 20 and time >= 10</p><p>delete from root.ln.wf02.wt02.status where time > 20</p><p>delete from root.ln.wf02.wt02.status where time >= 20</p><p>delete from root.ln.wf02.wt02.status where time = 20</p><p>出错：</p><p>delete from root.ln.wf02.wt02.status where time > 4 or time < 0</p><p>Msg: 303: Check metadata error: For delete statement, where clause can only contain atomic</p><p>expressions like : time > XXX, time <= XXX, or two atomic expressions connected by 'AND'</p><p>删除时间序列中的所有数据：</p><p>delete from root.ln.wf02.wt02.status</p><h2 id="_2、删除多列数据" tabindex="-1"><a class="header-anchor" href="#_2、删除多列数据" aria-hidden="true">#</a> 2、删除多列数据</h2><p>delete from root.ln.wf02.wt02.* where time <= 2017-11-01T16:26:00;</p><p>声明式的编程方式：</p><p>IoTDB> delete from root.ln.wf03.wt02.status where time < now()</p><p>Msg: The statement is executed successfully.</p><h1 id="数据查询" tabindex="-1"><a class="header-anchor" href="#数据查询" aria-hidden="true">#</a> 数据查询</h1><h2 id="_1、基础查询" tabindex="-1"><a class="header-anchor" href="#_1、基础查询" aria-hidden="true">#</a> 1、基础查询</h2><h3 id="时间过滤查询" tabindex="-1"><a class="header-anchor" href="#时间过滤查询" aria-hidden="true">#</a> 时间过滤查询</h3><p>select temperature from root.ln.wf01.wt01 where time < 2017-11-01T00:08:00.000</p><h3 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" aria-hidden="true">#</a> 根据一个时间区间选择多列数据</h3><p>select status, temperature from root.ln.wf01.wt01 where time > 2017-11-01T00:05:00.000 and time < 2017-11-01T00:12:00.000;</p><h3 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" aria-hidden="true">#</a> 按照多个时间区间选择同一设备的多列数据</h3><p>select status, temperature from root.ln.wf01.wt01 where (time > 2017-11-01T00:05:00.000 and time < 2017-11-01T00:12:00.000) or (time >= 2017-11-01T16:35:00.000 and time <= 2017-11-01T16:37:00.000);</p><h3 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" aria-hidden="true">#</a> 按照多个时间区间选择不同设备的多列数据</h3><p>select wf01.wt01.status, wf02.wt02.hardware from root.ln where (time > 2017-11-01T00:05:00.000 and time < 2017-11-01T00:12:00.000) or (time >= 2017-11-01T16:35:00.000 and time <= 2017-11-01T16:37:00.000);</p><h3 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" aria-hidden="true">#</a> 根据时间降序返回结果集</h3><p>select * from root.ln.** where time > 1 order by time desc limit 10;</p><h2 id="_2、选择表达式" tabindex="-1"><a class="header-anchor" href="#_2、选择表达式" aria-hidden="true">#</a> 2、选择表达式</h2><h3 id="使用别名" tabindex="-1"><a class="header-anchor" href="#使用别名" aria-hidden="true">#</a> 使用别名</h3><p>select s1 as temperature, s2 as speed from root.ln.wf01.wt01;</p><h3 id="运算符" tabindex="-1"><a class="header-anchor" href="#运算符" aria-hidden="true">#</a> 运算符</h3><h3 id="函数" tabindex="-1"><a class="header-anchor" href="#函数" aria-hidden="true">#</a> 函数</h3><p>不支持：</p><p>select s1, count(s1) from root.sg.d1;</p><p>select sin(s1), count(s1) from root.sg.d1;</p><p>select s1, count(s1) from root.sg.d1 group by ([10,100),10ms);</p><h4 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" aria-hidden="true">#</a> 时间序列查询嵌套表达式</h4><p>示例 1：</p><p>select a,</p><p> b,</p><p> ((a + 1) * 2 - 1) % 2 + 1.5,</p><p> sin(a + sin(a + sin(b))),</p><p> -(a + b) * (sin(a + b) * sin(a + b) + cos(a + b) * cos(a + b)) + 1</p><p>from root.sg1;</p><p>示例 2：</p>`,119),u={href:"http://root.sg",target:"_blank",rel:"noopener noreferrer"},m=a("p",null,"示例 3：",-1),g=a("p",null,"select (a + *) / 2 from root.sg1",-1),f=a("p",null,"示例 4：",-1),E={href:"http://root.sg",target:"_blank",rel:"noopener noreferrer"},b=n(`<h4 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" aria-hidden="true">#</a> 聚合查询嵌套表达式</h4><p>示例 1：</p><p>select avg(temperature),</p><p> sin(avg(temperature)),</p><p> avg(temperature) + 1,</p><p> -sum(hardware),</p><p> avg(temperature) + sum(hardware)</p><p>from root.ln.wf01.wt01;</p><p>示例 2：</p><p>select avg(*),</p><p> (avg(*) + 1) * 3 / 2 -1</p><p>from root.sg1</p><p>示例 3：</p><p>select avg(temperature),</p><p> sin(avg(temperature)),</p><p> avg(temperature) + 1,</p><p> -sum(hardware),</p><p> avg(temperature) + sum(hardware) as custom_sum</p><p>from root.ln.wf01.wt01</p><p>GROUP BY([10, 90), 10ms);</p><h2 id="_3、最新点查询" tabindex="-1"><a class="header-anchor" href="#_3、最新点查询" aria-hidden="true">#</a> 3、最新点查询</h2><p>SQL 语法：</p><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>select last <Path> [COMMA <Path>]* from < PrefixPath > [COMMA < PrefixPath >]* <whereClause> [ORDER BY TIMESERIES (DESC | ASC)?] |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>查询 root.ln.wf01.wt01.status 的最新数据点</p><p>IoTDB> select last status from root.ln.wf01.wt01</p><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><p>IoTDB> select last status, temperature from root.ln.wf01.wt01 where time >= 2017-11-07T23:50:00</p><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><p>IoTDB> select last * from root.ln.wf01.wt01 order by timeseries desc;</p><h2 id="_4、查询对齐模式" tabindex="-1"><a class="header-anchor" href="#_4、查询对齐模式" aria-hidden="true">#</a> 4、查询对齐模式</h2><h3 id="按设备对齐" tabindex="-1"><a class="header-anchor" href="#按设备对齐" aria-hidden="true">#</a> 按设备对齐</h3><p>select * from root.ln.** where time <= 2017-11-01T00:01:00 align by device;</p><h3 id="设备对齐模式下的排序" tabindex="-1"><a class="header-anchor" href="#设备对齐模式下的排序" aria-hidden="true">#</a> 设备对齐模式下的排序</h3><h4 id="时间对齐模式下的排序" tabindex="-1"><a class="header-anchor" href="#时间对齐模式下的排序" aria-hidden="true">#</a> 时间对齐模式下的排序</h4><p>select * from root.ln.** where time <= 2017-11-01T00:01:00 order by time desc;</p><h4 id="设备对齐模式下的排序-1" tabindex="-1"><a class="header-anchor" href="#设备对齐模式下的排序-1" aria-hidden="true">#</a> 设备对齐模式下的排序</h4><p>select * from root.ln.** where time <= 2017-11-01T00:01:00 order by device desc,time asc align by device;</p><p>在时间戳相等时按照设备名排序</p><p>select * from root.ln.** where time <= 2017-11-01T00:01:00 order by time asc,device desc align by device;</p><p>没有显式指定时</p><p>select * from root.ln.** where time <= 2017-11-01T00:01:00 align by device;</p><p>对聚合后的结果进行排序</p><p>select count(*) from root.ln.** group by ((2017-11-01T00:00:00.000+08:00,2017-11-01T00:03:00.000+08:00],1m) order by device asc,time asc align by device</p><h2 id="_5、查询过滤条件" tabindex="-1"><a class="header-anchor" href="#_5、查询过滤条件" aria-hidden="true">#</a> 5、查询过滤条件</h2><p>选择时间戳大于 2022-01-01T00:05:00.000 的数据：</p><p>select s1 from root.sg1.d1 where time > 2022-01-01T00:05:00.000;</p><p>选择时间戳等于 2022-01-01T00:05:00.000 的数据：</p><p>select s1 from root.sg1.d1 where time = 2022-01-01T00:05:00.000;</p><p>选择时间区间 [2017-11-01T00:05:00.000, 2017-11-01T00:12:00.000) 内的数据：</p><p>select s1 from root.sg1.d1 where time >= 2022-01-01T00:05:00.000 and time < 2017-11-01T00:12:00.000;</p><h3 id="值过滤条件" tabindex="-1"><a class="header-anchor" href="#值过滤条件" aria-hidden="true">#</a> 值过滤条件</h3><p>选择值大于 36.5 的数据：</p><p>select temperature from root.sg1.d1 where temperature > 36.5;</p><p>选择值等于 true 的数据：</p><p>select status from root.sg1.d1 where status = true;</p><p>选择区间 [36.5,40] 内或之外的数据：</p><p>select temperature from root.sg1.d1 where temperature between 36.5 and 40;</p><p>select temperature from root.sg1.d1 where temperature not between 36.5 and 40;</p><p>选择值在特定范围内的数据：</p><p>select code from root.sg1.d1 where code in ('200', '300', '400', '500');</p><p>选择值在特定范围外的数据：</p><p>select code from root.sg1.d1 where code not in ('200', '300', '400', '500');</p><p>选择值为空的数据:</p><p>select code from root.sg1.d1 where temperature is null;</p><p>选择值为非空的数据:</p><p>select code from root.sg1.d1 where temperature is not null;</p><h3 id="模糊查询" tabindex="-1"><a class="header-anchor" href="#模糊查询" aria-hidden="true">#</a> 模糊查询</h3><p>查询 <code>root.sg.d1</code> 下 <code>value</code> 含有<code>'cc'</code>的数据</p><p>IoTDB> select * from root.sg.d1 where value like '%cc%'</p><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><p>IoTDB> select * from root.sg.device where value like '<em>b</em>'</p><p>查询 root.sg.d1 下 value 值为26个英文字符组成的字符串</p><p>IoTDB> select * from root.sg.d1 where value regexp '<sup class="footnote-ref"><a href="#footnote1">[1]</a><a class="footnote-anchor" id="footnote-ref1"></a></sup>+$'</p><p>查询 root.sg.d1 下 value 值为26个小写英文字符组成的字符串且时间大于100的</p><p>IoTDB> select * from root.sg.d1 where value regexp '<sup class="footnote-ref"><a href="#footnote2">[2]</a><a class="footnote-anchor" id="footnote-ref2"></a></sup>+$' and time > 100</p><h2 id="_6、分段分组聚合" tabindex="-1"><a class="header-anchor" href="#_6、分段分组聚合" aria-hidden="true">#</a> 6、分段分组聚合</h2><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" aria-hidden="true">#</a> 未指定滑动步长的时间区间分组聚合查询</h4><p>select count(status), max_value(temperature) from root.ln.wf01.wt01 group by ([2017-11-01T00:00:00, 2017-11-07T23:00:00),1d);</p><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" aria-hidden="true">#</a> 指定滑动步长的时间区间分组聚合查询</h4><p>select count(status), max_value(temperature) from root.ln.wf01.wt01 group by ([2017-11-01 00:00:00, 2017-11-07 23:00:00), 3h, 1d);</p><p>滑动步长可以小于聚合窗口</p><p>select count(status), max_value(temperature) from root.ln.wf01.wt01 group by ([2017-11-01 00:00:00, 2017-11-01 10:00:00), 4h, 2h);</p><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" aria-hidden="true">#</a> 按照自然月份的时间区间分组聚合查询</h4><p>select count(status) from root.ln.wf01.wt01 where time > 2017-11-01T01:00:00 group by([2017-11-01T00:00:00, 2019-11-07T23:00:00), 1mo, 2mo);</p><p>每个时间间隔窗口内都有数据</p><p>select count(status) from root.ln.wf01.wt01 group by([2017-10-31T00:00:00, 2019-11-07T23:00:00), 1mo, 2mo);</p><h4 id="左开右闭区间" tabindex="-1"><a class="header-anchor" href="#左开右闭区间" aria-hidden="true">#</a> 左开右闭区间</h4><p>select count(status) from root.ln.wf01.wt01 group by ((2017-11-01T00:00:00, 2017-11-07T23:00:00],1d);</p><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" aria-hidden="true">#</a> 与分组聚合混合使用</h4><p>统计降采样后的数据点个数</p><p>select count(status) from root.ln.wf01.wt01 group by ((2017-11-01T00:00:00, 2017-11-07T23:00:00],1d), level=1;</p><p>加上滑动 Step 的降采样后的结果也可以汇总</p><p>select count(status) from root.ln.wf01.wt01 group by ([2017-11-01 00:00:00, 2017-11-07 23:00:00), 3h, 1d), level=1;</p><h3 id="路径层级分组聚合" tabindex="-1"><a class="header-anchor" href="#路径层级分组聚合" aria-hidden="true">#</a> 路径层级分组聚合</h3><p>统计不同 database 下 status 序列的数据点个数</p><p>select count(status) from root.** group by level = 1</p><p>统计不同设备下 status 序列的数据点个数</p><p>select count(status) from root.** group by level = 3</p><p>统计不同 database 下的不同设备中 status 序列的数据点个数</p><p>select count(status) from root.** group by level = 1, 3</p><p>查询所有序列下温度传感器 temperature 的最大值</p><p>select max_value(temperature) from root.** group by level = 0</p><p>查询某一层级下所有传感器拥有的总数据点数</p><p>select count(*) from root.ln.** group by level = 2</p><h3 id="标签分组聚合" tabindex="-1"><a class="header-anchor" href="#标签分组聚合" aria-hidden="true">#</a> 标签分组聚合</h3><h4 id="单标签聚合查询" tabindex="-1"><a class="header-anchor" href="#单标签聚合查询" aria-hidden="true">#</a> 单标签聚合查询</h4><p>SELECT AVG(temperature) FROM root.factory1.** GROUP BY TAGS(city);</p><h4 id="多标签聚合查询" tabindex="-1"><a class="header-anchor" href="#多标签聚合查询" aria-hidden="true">#</a> 多标签聚合查询</h4><p>SELECT avg(temperature) FROM root.factory1.** GROUP BY TAGS(city, workshop);</p><h4 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" aria-hidden="true">#</a> 基于时间区间的标签聚合查询</h4><p>SELECT AVG(temperature) FROM root.factory1.** GROUP BY ([1000, 10000), 5s), TAGS(city, workshop);</p><h3 id="差值分段聚合" tabindex="-1"><a class="header-anchor" href="#差值分段聚合" aria-hidden="true">#</a> 差值分段聚合</h3><p>group by variation(controlExpression[,delta][,ignoreNull=true/false])</p><h4 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" aria-hidden="true">#</a> delta=0时的等值事件分段</h4><p>select __endTime, avg(s1), count(s2), sum(s3) from root.sg.d group by variation(s6)</p><p>指定ignoreNull为false</p><p>select __endTime, avg(s1), count(s2), sum(s3) from root.sg.d group by variation(s6, ignoreNull=false)</p><h4 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" aria-hidden="true">#</a> delta!=0时的差值事件分段</h4><p>select __endTime, avg(s1), count(s2), sum(s3) from root.sg.d group by variation(s6, 4)</p><h3 id="条件分段聚合" tabindex="-1"><a class="header-anchor" href="#条件分段聚合" aria-hidden="true">#</a> 条件分段聚合</h3><p>group by condition(predict,[keep>/>=/=/<=/<]threshold,[,ignoreNull=true/false])</p><p>查询至少连续两行以上的charging_status=1的数据</p><p>select max_time(charging_status),count(vehicle_status),last_value(soc) from root.** group by condition(charging_status=1,KEEP>=2,ignoreNull=true)</p><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><p>select max_time(charging_status),count(vehicle_status),last_value(soc) from root.** group by condition(charging_status=1,KEEP>=2,ignoreNull=false)</p><h3 id="会话分段聚合" tabindex="-1"><a class="header-anchor" href="#会话分段聚合" aria-hidden="true">#</a> 会话分段聚合</h3><p>group by session(timeInterval)</p><p>按照不同的时间单位设定时间间隔</p><p>select __endTime,count(*) from root.** group by session(1d)</p><p>和<code>HAVING</code>、<code>ALIGN BY DEVICE</code>共同使用</p><p>select __endTime,sum(hardware) from root.ln.wf02.wt01 group by session(50s) having sum(hardware)>0 align by device</p><h2 id="点数分段聚合" tabindex="-1"><a class="header-anchor" href="#点数分段聚合" aria-hidden="true">#</a> 点数分段聚合</h2><p>group by count(controlExpression, size[,ignoreNull=true/false])</p>`,133),k={href:"http://root.sg",target:"_blank",rel:"noopener noreferrer"},v=a("p",null,"当使用ignoreNull将null值也考虑进来",-1),T={href:"http://root.sg",target:"_blank",rel:"noopener noreferrer"},w=n('<h2 id="_7、聚合结果过滤" tabindex="-1"><a class="header-anchor" href="#_7、聚合结果过滤" aria-hidden="true">#</a> 7、聚合结果过滤</h2><p>不正确的：</p><p>select count(s1) from root.** group by ([1,3),1ms) having sum(s1) > s1</p><p>select count(s1) from root.** group by ([1,3),1ms) having s1 > 1</p><p>select count(s1) from root.** group by ([1,3),1ms), level=1 having sum(d1.s1) > 1</p><p>select count(d1.s1) from root.** group by ([1,3),1ms), level=1 having sum(s1) > 1</p><p>SQL 示例：</p><p>select count(s1) from root.** group by ([1,11),2ms), level=1 having count(s2) > 2;</p><p>select count(s1), count(s2) from root.** group by ([1,11),2ms) having count(s2) > 1 align by device;</p><h2 id="_8、结果集补空值" tabindex="-1"><a class="header-anchor" href="#_8、结果集补空值" aria-hidden="true">#</a> 8、结果集补空值</h2><p>FILL '(' PREVIOUS | LINEAR | constant ')'</p><h4 id="previous-填充" tabindex="-1"><a class="header-anchor" href="#previous-填充" aria-hidden="true">#</a> <code>PREVIOUS</code> 填充</h4><p>select temperature, status from root.sgcc.wf03.wt01 where time >= 2017-11-01T16:37:00.000 and time <= 2017-11-01T16:40:00.000 fill(previous);</p><h4 id="linear-填充" tabindex="-1"><a class="header-anchor" href="#linear-填充" aria-hidden="true">#</a> <code>LINEAR</code> 填充</h4><p>select temperature, status from root.sgcc.wf03.wt01 where time >= 2017-11-01T16:37:00.000 and time <= 2017-11-01T16:40:00.000 fill(linear);</p><h4 id="常量填充" tabindex="-1"><a class="header-anchor" href="#常量填充" aria-hidden="true">#</a> 常量填充</h4><p>select temperature, status from root.sgcc.wf03.wt01 where time >= 2017-11-01T16:37:00.000 and time <= 2017-11-01T16:40:00.000 fill(2.0);</p><p>使用 <code>BOOLEAN</code> 类型的常量填充</p><p>select temperature, status from root.sgcc.wf03.wt01 where time >= 2017-11-01T16:37:00.000 and time <= 2017-11-01T16:40:00.000 fill(true);</p><h2 id="_9、查询结果分页" tabindex="-1"><a class="header-anchor" href="#_9、查询结果分页" aria-hidden="true">#</a> 9、查询结果分页</h2><h3 id="按行分页" tabindex="-1"><a class="header-anchor" href="#按行分页" aria-hidden="true">#</a> 按行分页</h3><p>基本的 <code>LIMIT</code> 子句</p><p>select status, temperature from root.ln.wf01.wt01 limit 10</p><p>带 <code>OFFSET</code> 的 <code>LIMIT</code> 子句</p><p>select status, temperature from root.ln.wf01.wt01 limit 5 offset 3</p><p><code>LIMIT</code> 子句与 <code>WHERE</code> 子句结合</p><p>select status,temperature from root.ln.wf01.wt01 where time > 2017-11-01T00:05:00.000 and time< 2017-11-01T00:12:00.000 limit 5 offset 3</p><p><code>LIMIT</code> 子句与 <code>GROUP BY</code> 子句组合</p><p>select count(status), max_value(temperature) from root.ln.wf01.wt01 group by ([2017-11-01T00:00:00, 2017-11-07T23:00:00),1d) limit 4 offset 3</p><h3 id="按列分页" tabindex="-1"><a class="header-anchor" href="#按列分页" aria-hidden="true">#</a> 按列分页</h3><p>基本的 <code>SLIMIT</code> 子句</p><p>select * from root.ln.wf01.wt01 where time > 2017-11-01T00:05:00.000 and time < 2017-11-01T00:12:00.000 slimit 1</p><p>带 <code>SOFFSET</code> 的 <code>SLIMIT</code> 子句</p><p>select * from root.ln.wf01.wt01 where time > 2017-11-01T00:05:00.000 and time < 2017-11-01T00:12:00.000 slimit 1 soffset 1</p><p><code>SLIMIT</code> 子句与 <code>GROUP BY</code> 子句结合</p><p>select max_value(*) from root.ln.wf01.wt01 group by ([2017-11-01T00:00:00, 2017-11-07T23:00:00),1d) slimit 1 soffset 1</p><p><code>SLIMIT</code> 子句与 <code>LIMIT</code> 子句结合</p><p>select * from root.ln.wf01.wt01 limit 10 offset 100 slimit 2 soffset 0</p><h2 id="_10、查询写回-select-into" tabindex="-1"><a class="header-anchor" href="#_10、查询写回-select-into" aria-hidden="true">#</a> 10、查询写回（SELECT INTO）</h2><h4 id="整体描述" tabindex="-1"><a class="header-anchor" href="#整体描述" aria-hidden="true">#</a> 整体描述</h4><p>selectIntoStatement</p><p> : SELECT</p><p> resultColumn [, resultColumn] ...</p><p> INTO intoItem [, intoItem] ...</p><p> FROM prefixPath [, prefixPath] ...</p><p> [WHERE whereCondition]</p><p> [GROUP BY groupByTimeClause, groupByLevelClause]</p><p> [FILL {PREVIOUS | LINEAR | constant}]</p><p> [LIMIT rowLimit OFFSET rowOffset]</p><p> [ALIGN BY DEVICE]</p><p> ;</p><p>intoItem</p><p> : [ALIGNED] intoDevicePath '(' intoMeasurementName [',' intoMeasurementName]* ')'</p><p> ;</p><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><p>IoTDB> select s1, s2 into root.sg_copy.d1(t1), root.sg_copy.d2(t1, t2), root.sg_copy.d1(t2) from root.sg.d1, root.sg.d2;</p><p>按时间对齐，将聚合查询的结果存储到指定序列中</p><p>IoTDB> select count(s1 + s2), last_value(s2) into root.agg.count(s1_add_s2), root.agg.last_value(s2) from root.sg.d1 group by ([0, 100), 10ms);</p><p>按设备对齐</p><p>IoTDB> select s1, s2 into root.sg_copy.d1(t1, t2), root.sg_copy.d2(t1, t2) from root.sg.d1, root.sg.d2 align by device;</p><p>按设备对齐，将表达式计算的结果存储到指定序列中</p><p>IoTDB> select s1 + s2 into root.expr.add(d1s1_d1s2), root.expr.add(d2s1_d2s2) from root.sg.d1, root.sg.d2 align by device;</p><h4 id="使用变量占位符" tabindex="-1"><a class="header-anchor" href="#使用变量占位符" aria-hidden="true">#</a> 使用变量占位符</h4><h5 id="按时间对齐-默认" tabindex="-1"><a class="header-anchor" href="#按时间对齐-默认" aria-hidden="true">#</a> 按时间对齐（默认）</h5><h6 id="_1-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="#_1-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" aria-hidden="true">#</a> （1）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</h6><p>select s1, s2</p><p>into root.sg_copy.d1(:😃, root.sg_copy.d2(s1), root.sg_copy.d1(${3}), root.sg_copy.d2(:😃</p><p>from root.sg.d1, root.sg.d2;</p><p>该语句等价于：</p><p>select s1, s2</p><p>into root.sg_copy.d1(s1), root.sg_copy.d2(s1), root.sg_copy.d1(s2), root.sg_copy.d2(s2)</p><p>from root.sg.d1, root.sg.d2;</p><h6 id="_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符" tabindex="-1"><a class="header-anchor" href="#_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符" aria-hidden="true">#</a> （2）目标设备使用变量占位符 & 目标物理量列表不使用变量占位符</h6><p>select d1.s1, d1.s2, d2.s3, d3.s4</p><p>into ::(s1_1, s2_2), root.sg.d2_2(s3_3), root.${2}_copy.::(s4)</p>',75),x={href:"http://root.sg",target:"_blank",rel:"noopener noreferrer"},I=a("h6",{id:"_3-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("a",{class:"header-anchor",href:"#_3-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","aria-hidden":"true"},"#"),e(" （3）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),_={href:"http://root.sg",target:"_blank",rel:"noopener noreferrer"},S=n('<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" aria-hidden="true">#</a> 按设备对齐（使用 <code>ALIGN BY DEVICE</code>）</h5><h6 id="_1-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="#_1-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" aria-hidden="true">#</a> （1）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</h6><p>select s1, s2, s3, s4</p><p>into root.backup_sg.d1(s1, s2, s3, s4), root.backup_sg.d2(:😃, root.sg.d3(backup_${4})</p><p>from root.sg.d1, root.sg.d2, root.sg.d3</p><p>align by device;</p><h6 id="_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符-1" tabindex="-1"><a class="header-anchor" href="#_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符-1" aria-hidden="true">#</a> （2）目标设备使用变量占位符 & 目标物理量列表不使用变量占位符</h6><p>select avg(s1), sum(s2) + sum(s3), count(s4)</p><p>into root.agg_${2}.::(avg_s1, sum_s2_add_s3, count_s4)</p><p>from root.**</p><p>align by device;</p><h6 id="_3-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="#_3-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" aria-hidden="true">#</a> （3）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</h6>',12),R={href:"http://root.sg",target:"_blank",rel:"noopener noreferrer"},q=n(`<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" aria-hidden="true">#</a> 指定目标序列为对齐序列</h4><p>select s1, s2 into root.sg_copy.d1(t1, t2), aligned root.sg_copy.d2(t1, t2) from root.sg.d1, root.sg.d2 align by device;</p><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" aria-hidden="true">#</a> 11、连续查询（Continuous Query, CQ）</h2><h3 id="语法" tabindex="-1"><a class="header-anchor" href="#语法" aria-hidden="true">#</a> 语法</h3><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>CREATE (CONTINUOUS QUERY | CQ) <cq_id> |
| [RESAMPLE |
| [EVERY <every_interval>] |
| [BOUNDARY <execution_boundary_time>] |
| [RANGE <start_time_offset>[, end_time_offset]] |
| ] |
| [TIMEOUT POLICY BLOCKED|DISCARD] |
| BEGIN |
| SELECT CLAUSE |
| INTO CLAUSE |
| FROM CLAUSE |
| [WHERE CLAUSE] |
| [GROUP BY(<group_by_interval>[, <sliding_step>]) [, level = <level>]] |
| [HAVING CLAUSE] |
| [FILL {PREVIOUS | LINEAR | constant}] |
| [LIMIT rowLimit OFFSET rowOffset] |
| [ALIGN BY DEVICE] |
| END |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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" aria-hidden="true">#</a> 配置连续查询执行的周期性间隔</h4><p>CREATE CONTINUOUS QUERY cq1</p><p>RESAMPLE EVERY 20s</p><p>BEGIN</p><p>SELECT max_value(temperature)</p><p>INTO root.ln.wf02.wt02(temperature_max), root.ln.wf02.wt01(temperature_max), root.ln.wf01.wt02(temperature_max), root.ln.wf01.wt01(temperature_max)</p><p>FROM root.ln.<em>.</em></p><p>GROUP BY(10s)</p><p>END</p><p>> SELECT temperature_max from root.ln.<em>.</em>;</p><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" aria-hidden="true">#</a> 配置连续查询的时间窗口大小</h4><p>CREATE CONTINUOUS QUERY cq2</p><p>RESAMPLE RANGE 40s</p><p>BEGIN</p><p>SELECT max_value(temperature)</p><p>INTO root.ln.wf02.wt02(temperature_max), root.ln.wf02.wt01(temperature_max), root.ln.wf01.wt02(temperature_max), root.ln.wf01.wt01(temperature_max)</p><p>FROM root.ln.<em>.</em></p><p>GROUP BY(10s)</p><p>END</p><p>> SELECT temperature_max from root.ln.<em>.</em>;</p><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" aria-hidden="true">#</a> 同时配置连续查询执行的周期性间隔和时间窗口大小</h4><p>CREATE CONTINUOUS QUERY cq3</p><p>RESAMPLE EVERY 20s RANGE 40s</p><p>BEGIN</p><p>SELECT max_value(temperature)</p><p>INTO root.ln.wf02.wt02(temperature_max), root.ln.wf02.wt01(temperature_max), root.ln.wf01.wt02(temperature_max), root.ln.wf01.wt01(temperature_max)</p><p>FROM root.ln.<em>.</em></p><p>GROUP BY(10s)</p><p>FILL(100.0)</p><p>END</p><p>> SELECT temperature_max from root.ln.<em>.</em>;</p><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" aria-hidden="true">#</a> 配置连续查询每次查询执行时间窗口的结束时间</h4><p>CREATE CONTINUOUS QUERY cq4</p><p>RESAMPLE EVERY 20s RANGE 40s, 20s</p><p>BEGIN</p><p>SELECT max_value(temperature)</p><p>INTO root.ln.wf02.wt02(temperature_max), root.ln.wf02.wt01(temperature_max), root.ln.wf01.wt02(temperature_max), root.ln.wf01.wt01(temperature_max)</p><p>FROM root.ln.<em>.</em></p><p>GROUP BY(10s)</p><p>FILL(100.0)</p><p>END</p><p>> SELECT temperature_max from root.ln.<em>.</em>;</p><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" aria-hidden="true">#</a> 没有GROUP BY TIME子句的连续查询</h4><p>CREATE CONTINUOUS QUERY cq5</p><p>RESAMPLE EVERY 20s</p><p>BEGIN</p><p>SELECT temperature + 1</p><p>INTO root.precalculated_sg.::(temperature)</p><p>FROM root.ln.<em>.</em></p><p>align by device</p><p>END</p><p>> SELECT temperature from root.precalculated_sg.<em>.</em> align by device;</p><h3 id="连续查询的管理" tabindex="-1"><a class="header-anchor" href="#连续查询的管理" aria-hidden="true">#</a> 连续查询的管理</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" aria-hidden="true">#</a> 查询系统已有的连续查询</h4><p>展示集群中所有的已注册的连续查询</p><p>SHOW (CONTINUOUS QUERIES | CQS)</p><p>SHOW CONTINUOUS QUERIES;</p><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" aria-hidden="true">#</a> 删除已有的连续查询</h4><p>删除指定的名为cq_id的连续查询：</p><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>DROP (CONTINUOUS QUERY | CQ) <cq_id> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>DROP CONTINUOUS QUERY s1_count_cq;</p><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" aria-hidden="true">#</a> 作为子查询的替代品</h4><p>\\1. 创建一个连续查询</p><p>CREATE CQ s1_count_cq</p><p>BEGIN</p><p> SELECT count(s1)</p><p> INTO root.sg_count.d.count_s1</p><p> FROM root.sg.d</p><p> GROUP BY(30m)</p><p>END</p><ol><li>查询连续查询的结果</li></ol><p>SELECT avg(count_s1) from root.sg_count.d;</p><h1 id="运算符和函数" tabindex="-1"><a class="header-anchor" href="#运算符和函数" aria-hidden="true">#</a> 运算符和函数</h1><h2 id="_1、用户自定义函数" tabindex="-1"><a class="header-anchor" href="#_1、用户自定义函数" aria-hidden="true">#</a> 1、用户自定义函数</h2><h5 id="udfparameters" tabindex="-1"><a class="header-anchor" href="#udfparameters" aria-hidden="true">#</a> UDFParameters</h5><p>SELECT UDF(s1, s2, 'key1'='iotdb', 'key2'='123.45') FROM root.sg.d;</p><h3 id="udf-注册" tabindex="-1"><a class="header-anchor" href="#udf-注册" aria-hidden="true">#</a> UDF 注册</h3><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>CREATE FUNCTION <UDF-NAME> AS <UDF-CLASS-FULL-PATHNAME> (USING URI URI-STRING)? |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h5 id="不指定uri" tabindex="-1"><a class="header-anchor" href="#不指定uri" aria-hidden="true">#</a> 不指定URI</h5><p>CREATE FUNCTION example AS 'org.apache.iotdb.udf.UDTFExample'</p><h5 id="指定uri" tabindex="-1"><a class="header-anchor" href="#指定uri" aria-hidden="true">#</a> 指定URI</h5>`,86),L={href:"http://jar/example.jar",target:"_blank",rel:"noopener noreferrer"},y=n(`<h3 id="udf-卸载" tabindex="-1"><a class="header-anchor" href="#udf-卸载" aria-hidden="true">#</a> UDF 卸载</h3><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>DROP FUNCTION <UDF-NAME> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>DROP FUNCTION example</p><h3 id="udf-查询" tabindex="-1"><a class="header-anchor" href="#udf-查询" aria-hidden="true">#</a> UDF 查询</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" aria-hidden="true">#</a> 带自定义输入参数的查询</h4><p>SELECT example(s1, 'key1'='value1', 'key2'='value2'), example(*, 'key3'='value3') FROM root.sg.d1;</p><p>SELECT example(s1, s2, 'key1'='value1', 'key2'='value2') FROM root.sg.d1;</p><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" aria-hidden="true">#</a> 与其他查询的嵌套查询</h4><p>SELECT s1, s2, example(s1, s2) FROM root.sg.d1;</p><p>SELECT <em>, example(</em>) FROM root.sg.d1 DISABLE ALIGN;</p><p>SELECT s1 * example(* / s1 + s2) FROM root.sg.d1;</p><p>SELECT s1, s2, s1 + example(s1, s2), s1 - example(s1 + example(s1, s2) / s2) FROM root.sg.d1;</p><h3 id="查看所有注册的-udf" tabindex="-1"><a class="header-anchor" href="#查看所有注册的-udf" aria-hidden="true">#</a> 查看所有注册的 UDF</h3><p>SHOW FUNCTIONS</p><h2 id="_2、聚合函数" tabindex="-1"><a class="header-anchor" href="#_2、聚合函数" aria-hidden="true">#</a> 2、聚合函数</h2><h3 id="count-if" tabindex="-1"><a class="header-anchor" href="#count-if" aria-hidden="true">#</a> COUNT_IF</h3><p>语法</p><p>count_if(predicate, [keep >=/>/=/!=/</<=]threshold[, 'ignoreNull'='true/false'])</p><h5 id="不使用ignorenull参数-忽略null" tabindex="-1"><a class="header-anchor" href="#不使用ignorenull参数-忽略null" aria-hidden="true">#</a> 不使用ignoreNull参数(忽略null)</h5><p>select count_if(s1=0 & s2=0, 3), count_if(s1=1 & s2=0, 3) from root.db.d1</p><h5 id="使用ignorenull参数" tabindex="-1"><a class="header-anchor" href="#使用ignorenull参数" aria-hidden="true">#</a> 使用ignoreNull参数</h5><p>select count_if(s1=0 & s2=0, 3, 'ignoreNull'='false'), count_if(s1=1 & s2=0, 3, 'ignoreNull'='false') from root.db.d1</p><h2 id="time-duration" tabindex="-1"><a class="header-anchor" href="#time-duration" aria-hidden="true">#</a> TIME_DURATION</h2><p>语法</p><p> time_duration(Path)</p><p>示例</p><p>select time_duration(s1) from root.db.d1</p><h2 id="_3、算数运算符和函数" tabindex="-1"><a class="header-anchor" href="#_3、算数运算符和函数" aria-hidden="true">#</a> 3、算数运算符和函数</h2><h3 id="算数运算符" tabindex="-1"><a class="header-anchor" href="#算数运算符" aria-hidden="true">#</a> 算数运算符</h3><p>select s1, - s1, s2, + s2, s1 + s2, s1 - s2, s1 * s2, s1 / s2, s1 % s2 from root.sg.d1</p><h3 id="数学函数" tabindex="-1"><a class="header-anchor" href="#数学函数" aria-hidden="true">#</a> 数学函数</h3><p>select s1, sin(s1), cos(s1), tan(s1) from root.sg1.d1 limit 5 offset 1000;</p><h4 id="round" tabindex="-1"><a class="header-anchor" href="#round" aria-hidden="true">#</a> ROUND</h4><p>select s4,round(s4),round(s4,2),round(s4,-1) from root.sg1.d1</p><h2 id="_4、比较运算符和函数" tabindex="-1"><a class="header-anchor" href="#_4、比较运算符和函数" aria-hidden="true">#</a> 4、比较运算符和函数</h2><h3 id="基本比较运算符" tabindex="-1"><a class="header-anchor" href="#基本比较运算符" aria-hidden="true">#</a> 基本比较运算符</h3><p>select a, b, a > 10, a <= b, !(a <= b), a > 10 && a > b from root.test;</p><h3 id="between-and-运算符" tabindex="-1"><a class="header-anchor" href="#between-and-运算符" aria-hidden="true">#</a> <code>BETWEEN ... AND ...</code> 运算符</h3><p>select temperature from root.sg1.d1 where temperature between 36.5 and 40;</p><p>select temperature from root.sg1.d1 where temperature not between 36.5 and 40;</p><h3 id="模糊匹配运算符" tabindex="-1"><a class="header-anchor" href="#模糊匹配运算符" aria-hidden="true">#</a> 模糊匹配运算符</h3><p>查询 <code>root.sg.d1</code> 下 <code>value</code> 含有<code>'cc'</code>的数据</p><p>select * from root.sg.d1 where value like '%cc%'</p><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><p>select * from root.sg.device where value like '<em>b</em>'</p><h4 id="使用-regexp-进行模糊匹配" tabindex="-1"><a class="header-anchor" href="#使用-regexp-进行模糊匹配" aria-hidden="true">#</a> 使用 <code>Regexp</code> 进行模糊匹配</h4><p>查询 root.sg.d1 下 value 值为26个英文字符组成的字符串</p><p>select * from root.sg.d1 where value regexp '<sup class="footnote-ref"><a href="#footnote3">[3]</a><a class="footnote-anchor" id="footnote-ref3"></a></sup>+$'</p><p>查询 root.sg.d1 下 value 值为26个小写英文字符组成的字符串且时间大于100的</p><p>select * from root.sg.d1 where value regexp '<sup class="footnote-ref"><a href="#footnote4">[4]</a><a class="footnote-anchor" id="footnote-ref4"></a></sup>+$' and time > 100</p><p>select b, b like '1%', b regexp '[0-2]' from root.test</p><p><code>IS NULL</code> 运算符</p><p>选择值为空的数据:</p><p>select code from root.sg1.d1 where temperature is null;</p><p>选择值为非空的数据:</p><p>select code from root.sg1.d1 where temperature is not null;</p><p><code>IN</code> 运算符</p><p>选择值在特定范围内的数据：</p><p>select code from root.sg1.d1 where code in ('200', '300', '400', '500');</p><p>选择值在特定范围外的数据：</p><p>select code from root.sg1.d1 where code not in ('200', '300', '400', '500');</p><p>select a, a in (1, 2) from root.test;</p><h3 id="条件函数" tabindex="-1"><a class="header-anchor" href="#条件函数" aria-hidden="true">#</a> 条件函数</h3><p>select ts, on_off(ts, 'threshold'='2') from root.test;</p><p>select ts, in_range(ts, 'lower'='2', 'upper'='3.1') from root.test;</p><h2 id="_5、逻辑运算符" tabindex="-1"><a class="header-anchor" href="#_5、逻辑运算符" aria-hidden="true">#</a> 5、逻辑运算符</h2><p>select a, b, a > 10, a <= b, !(a <= b), a > 10 && a > b from root.test;</p><h2 id="_6、字符串处理" tabindex="-1"><a class="header-anchor" href="#_6、字符串处理" aria-hidden="true">#</a> 6、字符串处理</h2><h3 id="string-contains" tabindex="-1"><a class="header-anchor" href="#string-contains" aria-hidden="true">#</a> STRING_CONTAINS</h3><p>select s1, string_contains(s1, 's'='warn') from root.sg1.d4;</p><h3 id="string-matches" tabindex="-1"><a class="header-anchor" href="#string-matches" aria-hidden="true">#</a> STRING_MATCHES</h3><p>select s1, string_matches(s1, 'regex'='[^\\s]+37229') from root.sg1.d4;</p><h3 id="length" tabindex="-1"><a class="header-anchor" href="#length" aria-hidden="true">#</a> Length</h3><p>select s1, length(s1) from root.sg1.d1</p><h3 id="locate" tabindex="-1"><a class="header-anchor" href="#locate" aria-hidden="true">#</a> Locate</h3><p>select s1, locate(s1, "target"="1") from root.sg1.d1</p><p>select s1, locate(s1, "target"="1", "reverse"="true") from root.sg1.d1</p><h3 id="startswith" tabindex="-1"><a class="header-anchor" href="#startswith" aria-hidden="true">#</a> StartsWith</h3><p>select s1, startswith(s1, "target"="1") from root.sg1.d1</p><h3 id="endswith" tabindex="-1"><a class="header-anchor" href="#endswith" aria-hidden="true">#</a> EndsWith</h3><p>select s1, endswith(s1, "target"="1") from root.sg1.d1</p><h3 id="concat" tabindex="-1"><a class="header-anchor" href="#concat" aria-hidden="true">#</a> Concat</h3><p>select s1, s2, concat(s1, s2, "target1"="IoT", "target2"="DB") from root.sg1.d1</p><p>select s1, s2, concat(s1, s2, "target1"="IoT", "target2"="DB", "series_behind"="true") from root.sg1.d1</p><h3 id="substring" tabindex="-1"><a class="header-anchor" href="#substring" aria-hidden="true">#</a> Substring</h3><p>select s1, substring(s1 from 1 for 2) from root.sg1.d1</p><h3 id="replace" tabindex="-1"><a class="header-anchor" href="#replace" aria-hidden="true">#</a> Replace</h3><p>select s1, replace(s1, 'es', 'tt') from root.sg1.d1</p><h3 id="upper" tabindex="-1"><a class="header-anchor" href="#upper" aria-hidden="true">#</a> Upper</h3><p>select s1, upper(s1) from root.sg1.d1</p><h3 id="lower" tabindex="-1"><a class="header-anchor" href="#lower" aria-hidden="true">#</a> Lower</h3><p>select s1, lower(s1) from root.sg1.d1</p><h3 id="trim" tabindex="-1"><a class="header-anchor" href="#trim" aria-hidden="true">#</a> Trim</h3><p>select s3, trim(s3) from root.sg1.d1</p><h3 id="strcmp" tabindex="-1"><a class="header-anchor" href="#strcmp" aria-hidden="true">#</a> StrCmp</h3><p>select s1, s2, strcmp(s1, s2) from root.sg1.d1</p><h3 id="strreplace" tabindex="-1"><a class="header-anchor" href="#strreplace" aria-hidden="true">#</a> StrReplace</h3><p>select strreplace(s1, "target"=",", "replace"="/", "limit"="2") from root.test.d1</p><p>select strreplace(s1, "target"=",", "replace"="/", "limit"="1", "offset"="1", "reverse"="true") from root.test.d1</p><h3 id="regexmatch" tabindex="-1"><a class="header-anchor" href="#regexmatch" aria-hidden="true">#</a> RegexMatch</h3><p>select regexmatch(s1, "regex"="\\d+.\\d+.\\d+.\\d+", "group"="0") from root.test.d1</p><h3 id="regexreplace" tabindex="-1"><a class="header-anchor" href="#regexreplace" aria-hidden="true">#</a> RegexReplace</h3><p>select regexreplace(s1, "regex"="192.168.0.(\\d+)", "replace"="cluster-$1", "limit"="1") from root.test.d1</p><h3 id="regexsplit" tabindex="-1"><a class="header-anchor" href="#regexsplit" aria-hidden="true">#</a> RegexSplit</h3><p>select regexsplit(s1, "regex"=",", "index"="-1") from root.test.d1</p><p>select regexsplit(s1, "regex"=",", "index"="3") from root.test.d1</p><h2 id="_7、数据类型转换" tabindex="-1"><a class="header-anchor" href="#_7、数据类型转换" aria-hidden="true">#</a> 7、数据类型转换</h2><h3 id="cast" tabindex="-1"><a class="header-anchor" href="#cast" aria-hidden="true">#</a> CAST</h3>`,108),N={href:"http://root.sg",target:"_blank",rel:"noopener noreferrer"},O=n('<h4 id="使用示例" tabindex="-1"><a class="header-anchor" href="#使用示例" aria-hidden="true">#</a> 使用示例</h4><p>cast BOOLEAN to other types</p><p>select cast(s5 as INT32), cast(s5 as INT64),cast(s5 as FLOAT),cast(s5 as DOUBLE), cast(s5 as TEXT) from root.sg.d1</p><p>cast TEXT to numeric types</p><p>select cast(s6 as INT32), cast(s6 as INT64), cast(s6 as FLOAT), cast(s6 as DOUBLE) from root.sg.d1 where time < 2</p><p>cast TEXT to BOOLEAN</p><p>select cast(s6 as BOOLEAN) from root.sg.d1 where time >= 2</p><h2 id="_8、常序列生成函数" tabindex="-1"><a class="header-anchor" href="#_8、常序列生成函数" aria-hidden="true">#</a> 8、常序列生成函数</h2><p>select s1, s2, const(s1, 'value'='1024', 'type'='INT64'), pi(s2), e(s1, s2) from root.sg1.d1;</p><h2 id="_9、选择函数" tabindex="-1"><a class="header-anchor" href="#_9、选择函数" aria-hidden="true">#</a> 9、选择函数</h2><p>select s1, top_k(s1, 'k'='2'), bottom_k(s1, 'k'='2') from root.sg1.d2 where time > 2020-12-10T20:36:15.530+08:00;</p><h2 id="_10、区间查询函数" tabindex="-1"><a class="header-anchor" href="#_10、区间查询函数" aria-hidden="true">#</a> 10、区间查询函数</h2><p>select s1, zero_count(s1), non_zero_count(s2), zero_duration(s3), non_zero_duration(s4) from root.sg.d2;</p><h2 id="_11、趋势计算函数" tabindex="-1"><a class="header-anchor" href="#_11、趋势计算函数" aria-hidden="true">#</a> 11、趋势计算函数</h2><p>select s1, time_difference(s1), difference(s1), non_negative_difference(s1), derivative(s1), non_negative_derivative(s1) from root.sg1.d1 limit 5 offset 1000;</p><h5 id="不使用ignorenull参数-忽略null-1" tabindex="-1"><a class="header-anchor" href="#不使用ignorenull参数-忽略null-1" aria-hidden="true">#</a> 不使用ignoreNull参数(忽略null)</h5><p>SELECT DIFF(s1), DIFF(s2) from root.test;</p><h5 id="使用ignorenull参数-1" tabindex="-1"><a class="header-anchor" href="#使用ignorenull参数-1" aria-hidden="true">#</a> 使用ignoreNull参数</h5><p>SELECT DIFF(s1, 'ignoreNull'='false'), DIFF(s2, 'ignoreNull'='false') from root.test;</p><h2 id="_12、采样函数" tabindex="-1"><a class="header-anchor" href="#_12、采样函数" aria-hidden="true">#</a> 12、采样函数</h2><h3 id="等数量分桶随机采样" tabindex="-1"><a class="header-anchor" href="#等数量分桶随机采样" aria-hidden="true">#</a> 等数量分桶随机采样</h3><p>select equal_size_bucket_random_sample(temperature,'proportion'='0.1') as random_sample from root.ln.wf01.wt01;</p><h3 id="等数量分桶聚合采样" tabindex="-1"><a class="header-anchor" href="#等数量分桶聚合采样" aria-hidden="true">#</a> 等数量分桶聚合采样</h3><p>select equal_size_bucket_agg_sample(temperature, 'type'='avg','proportion'='0.1') as agg_avg, equal_size_bucket_agg_sample(temperature, 'type'='max','proportion'='0.1') as agg_max, equal_size_bucket_agg_sample(temperature,'type'='min','proportion'='0.1') as agg_min, equal_size_bucket_agg_sample(temperature, 'type'='sum','proportion'='0.1') as agg_sum, equal_size_bucket_agg_sample(temperature, 'type'='extreme','proportion'='0.1') as agg_extreme, equal_size_bucket_agg_sample(temperature, 'type'='variance','proportion'='0.1') as agg_variance from root.ln.wf01.wt01;</p><h3 id="等数量分桶-m4-采样" tabindex="-1"><a class="header-anchor" href="#等数量分桶-m4-采样" aria-hidden="true">#</a> 等数量分桶 M4 采样</h3><p>select equal_size_bucket_m4_sample(temperature, 'proportion'='0.1') as M4_sample from root.ln.wf01.wt01;</p><h3 id="等数量分桶离群值采样" tabindex="-1"><a class="header-anchor" href="#等数量分桶离群值采样" aria-hidden="true">#</a> 等数量分桶离群值采样</h3><p>select equal_size_bucket_outlier_sample(temperature, 'proportion'='0.1', 'type'='avg', 'number'='2') as outlier_avg_sample, equal_size_bucket_outlier_sample(temperature, 'proportion'='0.1', 'type'='stendis', 'number'='2') as outlier_stendis_sample, equal_size_bucket_outlier_sample(temperature, 'proportion'='0.1', 'type'='cos', 'number'='2') as outlier_cos_sample, equal_size_bucket_outlier_sample(temperature, 'proportion'='0.1', 'type'='prenextdis', 'number'='2') as outlier_prenextdis_sample from root.ln.wf01.wt01;</p><h2 id="m4函数" tabindex="-1"><a class="header-anchor" href="#m4函数" aria-hidden="true">#</a> M4函数</h2><p>查询语句1：</p><p>select M4(s1,'timeInterval'='25','displayWindowBegin'='0','displayWindowEnd'='100') from root.vehicle.d1</p><p>查询语句2：</p><p>select M4(s1,'windowSize'='10') from root.vehicle.d1</p>',33),A={href:"https://grafana.com/docs/grafana/latest/dashboards/variables/add-template-variables/#global-variables",target:"_blank",rel:"noopener noreferrer"},D=n('<p>select M4(s1,'timeInterval'='$__interval_ms') from root.sg1.d1</p><h2 id="_13、时间序列处理" tabindex="-1"><a class="header-anchor" href="#_13、时间序列处理" aria-hidden="true">#</a> 13、时间序列处理</h2><h3 id="change-points" tabindex="-1"><a class="header-anchor" href="#change-points" aria-hidden="true">#</a> CHANGE_POINTS</h3><p>select change_points(s1), change_points(s2), change_points(s3), change_points(s4), change_points(s5), change_points(s6) from root.testChangePoints.d1</p><h2 id="_14、lambda-表达式" tabindex="-1"><a class="header-anchor" href="#_14、lambda-表达式" aria-hidden="true">#</a> 14、Lambda 表达式</h2><h3 id="jexl-自定义函数" tabindex="-1"><a class="header-anchor" href="#jexl-自定义函数" aria-hidden="true">#</a> JEXL 自定义函数</h3><p>select jexl(temperature, 'expr'='x -> {x + x}') as jexl1, jexl(temperature, 'expr'='x -> {x * 3}') as jexl2, jexl(temperature, 'expr'='x -> {x * x}') as jexl3, jexl(temperature, 'expr'='x -> {multiply(x, 100)}') as jexl4, jexl(temperature, st, 'expr'='(x, y) -> {x + y}') as jexl5, jexl(temperature, st, str, 'expr'='(x, y, z) -> {x + y + z}') as jexl6 from root.ln.wf01.wt01;</p><h2 id="_15、条件表达式" tabindex="-1"><a class="header-anchor" href="#_15、条件表达式" aria-hidden="true">#</a> 15、条件表达式</h2><h3 id="case" tabindex="-1"><a class="header-anchor" href="#case" aria-hidden="true">#</a> CASE</h3><h4 id="语法示例" tabindex="-1"><a class="header-anchor" href="#语法示例" aria-hidden="true">#</a> 语法示例</h4><ul><li><p>格式1：</p><p>CASE</p></li></ul><p> WHEN condition1 THEN expression1</p><p> [WHEN condition2 THEN expression2] ...</p><p> [ELSE expression_end]</p><p>END</p><ul><li><p>格式2：</p><p>CASE caseValue</p></li></ul><p> WHEN whenValue1 THEN expression1</p><p> [WHEN whenValue2 THEN expression2] ...</p><p> [ELSE expression_end]</p><p>END</p><h5 id="示例1" tabindex="-1"><a class="header-anchor" href="#示例1" aria-hidden="true">#</a> 示例1</h5><p>select T, P, case</p><p>when 1000<T and T<1050 and 1000000<P and P<1100000 then "good!"</p><p>when T<=1000 or T>=1050 then "bad temperature"</p><p>when P<=1000000 or P>=1100000 then "bad pressure"</p><p>end as <code>result</code></p><p>from root.test1</p><h5 id="示例2" tabindex="-1"><a class="header-anchor" href="#示例2" aria-hidden="true">#</a> 示例2</h5><p>select str, case</p><p>when str like "%cc%" then "has cc"</p><p>when str like "%dd%" then "has dd"</p><p>else "no cc and dd" end as <code>result</code></p><p>from root.test2</p><h5 id="示例3-搭配聚合函数" tabindex="-1"><a class="header-anchor" href="#示例3-搭配聚合函数" aria-hidden="true">#</a> 示例3：搭配聚合函数</h5><p>select</p><p>count(case when x<=1 then 1 end) as <code>(-∞,1]</code>,</p><p>count(case when 1<x and x<=3 then 1 end) as <code>(1,3]</code>,</p><p>count(case when 3<x and x<=7 then 1 end) as <code>(3,7]</code>,</p><p>count(case when 7<x then 1 end) as <code>(7,+∞)</code></p><p>from root.test3</p><h6 id="非法-case表达式←聚合函数" tabindex="-1"><a class="header-anchor" href="#非法-case表达式←聚合函数" aria-hidden="true">#</a> 非法：CASE表达式←聚合函数</h6><p>select case when x<=1 then avg(x) else sum(x) end from root.test3</p><h5 id="示例4-格式2" tabindex="-1"><a class="header-anchor" href="#示例4-格式2" aria-hidden="true">#</a> 示例4：格式2</h5><p>select x, case x when 1 then "one" when 2 then "two" else "other" end from root.test4</p><h5 id="示例5-结果子句类型" tabindex="-1"><a class="header-anchor" href="#示例5-结果子句类型" aria-hidden="true">#</a> 示例5：结果子句类型</h5><h6 id="非法-boolean与其它类型共存" tabindex="-1"><a class="header-anchor" href="#非法-boolean与其它类型共存" aria-hidden="true">#</a> 非法：BOOLEAN与其它类型共存</h6><p>select x, case x when 1 then true when 2 then 2 end from root.test4</p><h6 id="合法-只存在boolean类型" tabindex="-1"><a class="header-anchor" href="#合法-只存在boolean类型" aria-hidden="true">#</a> 合法：只存在BOOLEAN类型</h6><p>select x, case x when 1 then true when 2 then false end as <code>result</code> from root.test4</p><h6 id="非法-text与其它类型共存" tabindex="-1"><a class="header-anchor" href="#非法-text与其它类型共存" aria-hidden="true">#</a> 非法：TEXT与其它类型共存</h6><p>select x, case x when 1 then 1 when 2 then "str" end from root.test4</p><h6 id="合法-数值类型共存" tabindex="-1"><a class="header-anchor" href="#合法-数值类型共存" aria-hidden="true">#</a> 合法：数值类型共存</h6><p>select x, case x</p><p>when 1 then 1</p><p>when 2 then 222222222222222</p><p>when 3 then 3.3</p><p>when 4 then 4.4444444444444</p><p>end as <code>result</code></p><p>from root.test4</p><h2 id="_16、数据画像" tabindex="-1"><a class="header-anchor" href="#_16、数据画像" aria-hidden="true">#</a> 16、数据画像</h2><h3 id="acf" tabindex="-1"><a class="header-anchor" href="#acf" aria-hidden="true">#</a> ACF</h3><p>select acf(s1) from root.test.d1 where time <= 2020-01-01 00:00:05</p><h3 id="distinct" tabindex="-1"><a class="header-anchor" href="#distinct" aria-hidden="true">#</a> Distinct</h3><p>select distinct(s2) from root.test.d2</p><h3 id="histogram" tabindex="-1"><a class="header-anchor" href="#histogram" aria-hidden="true">#</a> Histogram</h3><p>select histogram(s1,"min"="1","max"="20","count"="10") from root.test.d1</p><h3 id="integral" tabindex="-1"><a class="header-anchor" href="#integral" aria-hidden="true">#</a> Integral</h3><p>select integral(s1) from root.test.d1 where time <= 2020-01-01 00:00:10</p><h4 id="指定时间单位" tabindex="-1"><a class="header-anchor" href="#指定时间单位" aria-hidden="true">#</a> 指定时间单位</h4><p>select integral(s1, "unit"="1m") from root.test.d1 where time <= 2020-01-01 00:00:10</p><h3 id="integralavg" tabindex="-1"><a class="header-anchor" href="#integralavg" aria-hidden="true">#</a> IntegralAvg</h3><p>select integralavg(s1) from root.test.d1 where time <= 2020-01-01 00:00:10</p><h3 id="mad" tabindex="-1"><a class="header-anchor" href="#mad" aria-hidden="true">#</a> Mad</h3><p>select mad(s0) from root.test</p><h5 id="近似查询" tabindex="-1"><a class="header-anchor" href="#近似查询" aria-hidden="true">#</a> 近似查询</h5><p>select mad(s0, "error"="0.01") from root.test</p><h3 id="median" tabindex="-1"><a class="header-anchor" href="#median" aria-hidden="true">#</a> Median</h3><p>select median(s0, "error"="0.01") from root.test</p><h3 id="minmax" tabindex="-1"><a class="header-anchor" href="#minmax" aria-hidden="true">#</a> MinMax</h3><p>select minmax(s1) from root.test</p><h3 id="mode" tabindex="-1"><a class="header-anchor" href="#mode" aria-hidden="true">#</a> Mode</h3><p>select mode(s2) from root.test.d2</p><h3 id="mvavg" tabindex="-1"><a class="header-anchor" href="#mvavg" aria-hidden="true">#</a> MvAvg</h3><p>select mvavg(s1, "window"="3") from root.test</p><h3 id="pacf" tabindex="-1"><a class="header-anchor" href="#pacf" aria-hidden="true">#</a> PACF</h3><p>select pacf(s1, "lag"="5") from root.test</p><h3 id="percentile" tabindex="-1"><a class="header-anchor" href="#percentile" aria-hidden="true">#</a> Percentile</h3><p>select percentile(s0, "rank"="0.2", "error"="0.01") from root.test</p><h3 id="quantile" tabindex="-1"><a class="header-anchor" href="#quantile" aria-hidden="true">#</a> Quantile</h3><p>select quantile(s0, "rank"="0.2", "K"="800") from root.test</p><h3 id="period" tabindex="-1"><a class="header-anchor" href="#period" aria-hidden="true">#</a> Period</h3><p>select period(s1) from root.test.d3</p><h3 id="qlb" tabindex="-1"><a class="header-anchor" href="#qlb" aria-hidden="true">#</a> QLB</h3><p>select QLB(s1) from root.test.d1</p><h3 id="resample" tabindex="-1"><a class="header-anchor" href="#resample" aria-hidden="true">#</a> Resample</h3><h5 id="上采样" tabindex="-1"><a class="header-anchor" href="#上采样" aria-hidden="true">#</a> 上采样</h5><p>select resample(s1,'every'='5m','interp'='linear') from root.test.d1</p><h5 id="下采样" tabindex="-1"><a class="header-anchor" href="#下采样" aria-hidden="true">#</a> 下采样</h5><p>select resample(s1,'every'='30m','aggr'='first') from root.test.d1</p><h5 id="指定重采样时间段" tabindex="-1"><a class="header-anchor" href="#指定重采样时间段" aria-hidden="true">#</a> 指定重采样时间段</h5><p>select resample(s1,'every'='30m','start'='2021-03-06 15:00:00') from root.test.d1</p><h3 id="sample" tabindex="-1"><a class="header-anchor" href="#sample" aria-hidden="true">#</a> Sample</h3><h5 id="蓄水池采样" tabindex="-1"><a class="header-anchor" href="#蓄水池采样" aria-hidden="true">#</a> 蓄水池采样</h5><p>select sample(s1,'method'='reservoir','k'='5') from root.test.d1</p><h5 id="等距采样" tabindex="-1"><a class="header-anchor" href="#等距采样" aria-hidden="true">#</a> 等距采样</h5><p>select sample(s1,'method'='isometric','k'='5') from root.test.d1</p><h3 id="segment" tabindex="-1"><a class="header-anchor" href="#segment" aria-hidden="true">#</a> Segment</h3><p>select segment(s1,"error"="0.1") from root.test</p><h3 id="skew" tabindex="-1"><a class="header-anchor" href="#skew" aria-hidden="true">#</a> Skew</h3><p>select skew(s1) from root.test.d1</p><h3 id="spline" tabindex="-1"><a class="header-anchor" href="#spline" aria-hidden="true">#</a> Spline</h3><p>select spline(s1, "points"="151") from root.test</p><h3 id="spread" tabindex="-1"><a class="header-anchor" href="#spread" aria-hidden="true">#</a> Spread</h3><p>select spread(s1) from root.test.d1 where time <= 2020-01-01 00:00:30</p><h3 id="stddev" tabindex="-1"><a class="header-anchor" href="#stddev" aria-hidden="true">#</a> Stddev</h3><p>select stddev(s1) from root.test.d1</p><h3 id="zscore" tabindex="-1"><a class="header-anchor" href="#zscore" aria-hidden="true">#</a> ZScore</h3><p>select zscore(s1) from root.test</p><h2 id="_17、异常检测" tabindex="-1"><a class="header-anchor" href="#_17、异常检测" aria-hidden="true">#</a> 17、异常检测</h2><h3 id="iqr" tabindex="-1"><a class="header-anchor" href="#iqr" aria-hidden="true">#</a> IQR</h3><p>select iqr(s1) from root.test</p><h3 id="ksigma" tabindex="-1"><a class="header-anchor" href="#ksigma" aria-hidden="true">#</a> KSigma</h3><p>select ksigma(s1,"k"="1.0") from root.test.d1 where time <= 2020-01-01 00:00:30</p><h3 id="lof" tabindex="-1"><a class="header-anchor" href="#lof" aria-hidden="true">#</a> LOF</h3><p>select lof(s1,s2) from root.test.d1 where time<1000</p><h5 id="诊断一维时间序列" tabindex="-1"><a class="header-anchor" href="#诊断一维时间序列" aria-hidden="true">#</a> 诊断一维时间序列</h5><p>select lof(s1, "method"="series") from root.test.d1 where time<1000</p><h3 id="missdetect" tabindex="-1"><a class="header-anchor" href="#missdetect" aria-hidden="true">#</a> MissDetect</h3><p>select missdetect(s2,'minlen'='10') from root.test.d2</p><h3 id="range" tabindex="-1"><a class="header-anchor" href="#range" aria-hidden="true">#</a> Range</h3><p>select range(s1,"lower_bound"="101.0","upper_bound"="125.0") from root.test.d1 where time <= 2020-01-01 00:00:30</p><h3 id="twosidedfilter" tabindex="-1"><a class="header-anchor" href="#twosidedfilter" aria-hidden="true">#</a> TwoSidedFilter</h3><p>select TwoSidedFilter(s0, 'len'='5', 'threshold'='0.3') from root.test</p><h3 id="outlier" tabindex="-1"><a class="header-anchor" href="#outlier" aria-hidden="true">#</a> Outlier</h3><p>select outlier(s1,"r"="5.0","k"="4","w"="10","s"="5") from root.test</p><h2 id="_18、数据匹配" tabindex="-1"><a class="header-anchor" href="#_18、数据匹配" aria-hidden="true">#</a> 18、数据匹配</h2><h3 id="cov" tabindex="-1"><a class="header-anchor" href="#cov" aria-hidden="true">#</a> Cov</h3><p>select cov(s1,s2) from root.test.d2</p><h3 id="dtw" tabindex="-1"><a class="header-anchor" href="#dtw" aria-hidden="true">#</a> Dtw</h3><p>select dtw(s1,s2) from root.test.d2</p><h3 id="pearson" tabindex="-1"><a class="header-anchor" href="#pearson" aria-hidden="true">#</a> Pearson</h3><p>select pearson(s1,s2) from root.test.d2</p><h3 id="ptnsym" tabindex="-1"><a class="header-anchor" href="#ptnsym" aria-hidden="true">#</a> PtnSym</h3><p>select ptnsym(s4, 'window'='5', 'threshold'='0') from root.test.d1</p><h3 id="xcorr" tabindex="-1"><a class="header-anchor" href="#xcorr" aria-hidden="true">#</a> XCorr</h3><p>select xcorr(s1, s2) from root.test.d1 where time <= 2020-01-01 00:00:05</p><h2 id="_19、频域分析" tabindex="-1"><a class="header-anchor" href="#_19、频域分析" aria-hidden="true">#</a> 19、频域分析</h2><h3 id="conv" tabindex="-1"><a class="header-anchor" href="#conv" aria-hidden="true">#</a> Conv</h3><p>select conv(s1,s2) from root.test.d2</p><h3 id="deconv" tabindex="-1"><a class="header-anchor" href="#deconv" aria-hidden="true">#</a> Deconv</h3><h5 id="计算去卷积的商" tabindex="-1"><a class="header-anchor" href="#计算去卷积的商" aria-hidden="true">#</a> 计算去卷积的商</h5><p>select deconv(s3,s2) from root.test.d2</p><h5 id="计算去卷积的余数" tabindex="-1"><a class="header-anchor" href="#计算去卷积的余数" aria-hidden="true">#</a> 计算去卷积的余数</h5><p>select deconv(s3,s2,'result'='remainder') from root.test.d2</p><h3 id="dwt" tabindex="-1"><a class="header-anchor" href="#dwt" aria-hidden="true">#</a> DWT</h3><p>select dwt(s1,"method"="haar") from root.test.d1</p><h3 id="fft" tabindex="-1"><a class="header-anchor" href="#fft" aria-hidden="true">#</a> FFT</h3><h5 id="等距傅里叶变换" tabindex="-1"><a class="header-anchor" href="#等距傅里叶变换" aria-hidden="true">#</a> 等距傅里叶变换</h5><p>select fft(s1) from root.test.d1</p><h5 id="等距傅里叶变换并压缩" tabindex="-1"><a class="header-anchor" href="#等距傅里叶变换并压缩" aria-hidden="true">#</a> 等距傅里叶变换并压缩</h5><p>select fft(s1, 'result'='real', 'compress'='0.99'), fft(s1, 'result'='imag','compress'='0.99') from root.test.d1</p><h3 id="highpass" tabindex="-1"><a class="header-anchor" href="#highpass" aria-hidden="true">#</a> HighPass</h3><p>select highpass(s1,'wpass'='0.45') from root.test.d1</p><h3 id="ifft" tabindex="-1"><a class="header-anchor" href="#ifft" aria-hidden="true">#</a> IFFT</h3><p>select ifft(re, im, 'interval'='1m', 'start'='2021-01-01 00:00:00') from root.test.d1</p><h3 id="lowpass" tabindex="-1"><a class="header-anchor" href="#lowpass" aria-hidden="true">#</a> LowPass</h3><p>select lowpass(s1,'wpass'='0.45') from root.test.d1</p><h2 id="_20、数据质量" tabindex="-1"><a class="header-anchor" href="#_20、数据质量" aria-hidden="true">#</a> 20、数据质量</h2><h3 id="completeness" tabindex="-1"><a class="header-anchor" href="#completeness" aria-hidden="true">#</a> Completeness</h3><h6 id="参数缺省" tabindex="-1"><a class="header-anchor" href="#参数缺省" aria-hidden="true">#</a> 参数缺省</h6><p>select completeness(s1) from root.test.d1 where time <= 2020-01-01 00:00:30</p><h6 id="指定窗口大小" tabindex="-1"><a class="header-anchor" href="#指定窗口大小" aria-hidden="true">#</a> 指定窗口大小</h6><p>select completeness(s1,"window"="15") from root.test.d1 where time <= 2020-01-01 00:01:00</p><h3 id="consistency" tabindex="-1"><a class="header-anchor" href="#consistency" aria-hidden="true">#</a> Consistency</h3><h6 id="参数缺省-1" tabindex="-1"><a class="header-anchor" href="#参数缺省-1" aria-hidden="true">#</a> 参数缺省</h6><p>select consistency(s1) from root.test.d1 where time <= 2020-01-01 00:00:30</p><h6 id="指定窗口大小-1" tabindex="-1"><a class="header-anchor" href="#指定窗口大小-1" aria-hidden="true">#</a> 指定窗口大小</h6><p>select consistency(s1,"window"="15") from root.test.d1 where time <= 2020-01-01 00:01:00</p><h3 id="timeliness" tabindex="-1"><a class="header-anchor" href="#timeliness" aria-hidden="true">#</a> Timeliness</h3><h6 id="参数缺省-2" tabindex="-1"><a class="header-anchor" href="#参数缺省-2" aria-hidden="true">#</a> 参数缺省</h6><p>select timeliness(s1) from root.test.d1 where time <= 2020-01-01 00:00:30</p><h6 id="指定窗口大小-2" tabindex="-1"><a class="header-anchor" href="#指定窗口大小-2" aria-hidden="true">#</a> 指定窗口大小</h6><p>select timeliness(s1,"window"="15") from root.test.d1 where time <= 2020-01-01 00:01:00</p><h3 id="validity" tabindex="-1"><a class="header-anchor" href="#validity" aria-hidden="true">#</a> Validity</h3><h6 id="参数缺省-3" tabindex="-1"><a class="header-anchor" href="#参数缺省-3" aria-hidden="true">#</a> 参数缺省</h6><p>select validity(s1) from root.test.d1 where time <= 2020-01-01 00:00:30</p><h6 id="指定窗口大小-3" tabindex="-1"><a class="header-anchor" href="#指定窗口大小-3" aria-hidden="true">#</a> 指定窗口大小</h6><p>select validity(s1,"window"="15") from root.test.d1 where time <= 2020-01-01 00:01:00</p><h3 id="accuracy" tabindex="-1"><a class="header-anchor" href="#accuracy" aria-hidden="true">#</a> Accuracy</h3><p>select Accuracy(t1,t2,t3,m1,m2,m3) from root.test</p><h2 id="_21、数据修复" tabindex="-1"><a class="header-anchor" href="#_21、数据修复" aria-hidden="true">#</a> 21、数据修复</h2><h3 id="timestamprepair" tabindex="-1"><a class="header-anchor" href="#timestamprepair" aria-hidden="true">#</a> TimestampRepair</h3><h5 id="指定标准时间间隔" tabindex="-1"><a class="header-anchor" href="#指定标准时间间隔" aria-hidden="true">#</a> 指定标准时间间隔</h5><p>select timestamprepair(s1,'interval'='10000') from root.test.d2</p><h5 id="自动推算标准时间间隔" tabindex="-1"><a class="header-anchor" href="#自动推算标准时间间隔" aria-hidden="true">#</a> 自动推算标准时间间隔</h5><p>select timestamprepair(s1) from root.test.d2</p><h3 id="valuefill" tabindex="-1"><a class="header-anchor" href="#valuefill" aria-hidden="true">#</a> ValueFill</h3><h5 id="使用-linear-方法进行填补" tabindex="-1"><a class="header-anchor" href="#使用-linear-方法进行填补" aria-hidden="true">#</a> 使用 linear 方法进行填补</h5><p>select valuefill(s1) from root.test.d2</p><h5 id="使用-previous-方法进行填补" tabindex="-1"><a class="header-anchor" href="#使用-previous-方法进行填补" aria-hidden="true">#</a> 使用 previous 方法进行填补</h5><p>select valuefill(s1,"method"="previous") from root.test.d2</p><h3 id="valuerepair" tabindex="-1"><a class="header-anchor" href="#valuerepair" aria-hidden="true">#</a> ValueRepair</h3><h5 id="使用-screen-方法进行修复" tabindex="-1"><a class="header-anchor" href="#使用-screen-方法进行修复" aria-hidden="true">#</a> 使用 Screen 方法进行修复</h5><p>select valuerepair(s1) from root.test.d2</p><h5 id="使用-lsgreedy-方法进行修复" tabindex="-1"><a class="header-anchor" href="#使用-lsgreedy-方法进行修复" aria-hidden="true">#</a> 使用 LsGreedy 方法进行修复</h5><p>select valuerepair(s1,'method'='LsGreedy') from root.test.d2</p><h3 id="masterrepair" tabindex="-1"><a class="header-anchor" href="#masterrepair" aria-hidden="true">#</a> MasterRepair</h3><p>select MasterRepair(t1,t2,t3,m1,m2,m3) from root.test</p><h3 id="seasonalrepair" tabindex="-1"><a class="header-anchor" href="#seasonalrepair" aria-hidden="true">#</a> SeasonalRepair</h3><h5 id="使用经典分解方法进行修复" tabindex="-1"><a class="header-anchor" href="#使用经典分解方法进行修复" aria-hidden="true">#</a> 使用经典分解方法进行修复</h5><p>select seasonalrepair(s1,'period'=3,'k'=2) from root.test.d2</p><h5 id="使用改进的分解方法进行修复" tabindex="-1"><a class="header-anchor" href="#使用改进的分解方法进行修复" aria-hidden="true">#</a> 使用改进的分解方法进行修复</h5><p>select seasonalrepair(s1,'method'='improved','period'=3) from root.test.d2</p><h2 id="_22、序列发现" tabindex="-1"><a class="header-anchor" href="#_22、序列发现" aria-hidden="true">#</a> 22、序列发现</h2><h3 id="consecutivesequences" tabindex="-1"><a class="header-anchor" href="#consecutivesequences" aria-hidden="true">#</a> ConsecutiveSequences</h3><h5 id="手动指定标准时间间隔" tabindex="-1"><a class="header-anchor" href="#手动指定标准时间间隔" aria-hidden="true">#</a> 手动指定标准时间间隔</h5><p>select consecutivesequences(s1,s2,'gap'='5m') from root.test.d1</p><h5 id="自动估计标准时间间隔" tabindex="-1"><a class="header-anchor" href="#自动估计标准时间间隔" aria-hidden="true">#</a> 自动估计标准时间间隔</h5><p>select consecutivesequences(s1,s2) from root.test.d1</p><h3 id="consecutivewindows" tabindex="-1"><a class="header-anchor" href="#consecutivewindows" aria-hidden="true">#</a> ConsecutiveWindows</h3><p>select consecutivewindows(s1,s2,'length'='10m') from root.test.d1</p><h2 id="_23、机器学习" tabindex="-1"><a class="header-anchor" href="#_23、机器学习" aria-hidden="true">#</a> 23、机器学习</h2><h3 id="ar" tabindex="-1"><a class="header-anchor" href="#ar" aria-hidden="true">#</a> AR</h3><p>select ar(s0,"p"="2") from root.test.d0</p><h3 id="representation" tabindex="-1"><a class="header-anchor" href="#representation" aria-hidden="true">#</a> Representation</h3><p>select representation(s0,"tb"="3","vb"="2") from root.test.d0</p><h3 id="rm" tabindex="-1"><a class="header-anchor" href="#rm" aria-hidden="true">#</a> RM</h3><p>select rm(s0, s1,"tb"="3","vb"="2") from root.test.d0</p><h1 id="管理触发器" tabindex="-1"><a class="header-anchor" href="#管理触发器" aria-hidden="true">#</a> 管理触发器</h1><h2 id="_1、使用-sql-语句注册该触发器" tabindex="-1"><a class="header-anchor" href="#_1、使用-sql-语句注册该触发器" aria-hidden="true">#</a> 1、使用 SQL 语句注册该触发器</h2><p>// Create Trigger</p><p>createTrigger</p><p> : CREATE triggerType TRIGGER triggerName=identifier triggerEventClause ON pathPattern AS className=STRING_LITERAL uriClause? triggerAttributeClause?</p><p> ;</p><p>triggerType</p><p> : STATELESS | STATEFUL</p><p> ;</p><p>triggerEventClause</p><p> : (BEFORE | AFTER) INSERT</p><p> ;</p><p>uriClause</p><p> : USING URI uri</p><p> ;</p><p>uri</p><p> : STRING_LITERAL</p><p> ;</p><p>triggerAttributeClause</p><p> : WITH LR_BRACKET triggerAttribute (COMMA triggerAttribute)* RR_BRACKET</p><p> ;</p><p>triggerAttribute</p><p> : key=attributeKey operator_eq value=attributeValue</p><p> ;</p><h3 id="sql-语句示例" tabindex="-1"><a class="header-anchor" href="#sql-语句示例" aria-hidden="true">#</a> SQL 语句示例：</h3><p>CREATE STATELESS TRIGGER triggerTest</p><p>BEFORE INSERT</p>',255),G={href:"http://root.sg",target:"_blank",rel:"noopener noreferrer"},P=a("p",null,"AS 'org.apache.iotdb.trigger.ClusterAlertingExample'",-1),B={href:"http://jar/ClusterAlertingExample.jar",target:"_blank",rel:"noopener noreferrer"},C=n(`<p>WITH (</p><p> "name" = "trigger",</p><p> "limit" = "100"</p><p>)</p><h2 id="_2、卸载触发器" tabindex="-1"><a class="header-anchor" href="#_2、卸载触发器" aria-hidden="true">#</a> 2、卸载触发器</h2><h3 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" aria-hidden="true">#</a> 卸载触发器的 SQL 语法如下：</h3><p>// Drop Trigger</p><p>dropTrigger</p><p>: DROP TRIGGER triggerName=identifier</p><p>;</p><h3 id="示例语句" tabindex="-1"><a class="header-anchor" href="#示例语句" aria-hidden="true">#</a> 示例语句：</h3><p>DROP TRIGGER triggerTest1</p><h2 id="查询触发器" tabindex="-1"><a class="header-anchor" href="#查询触发器" aria-hidden="true">#</a> 查询触发器</h2><p>SHOW TRIGGERS</p><h1 id="权限管理" tabindex="-1"><a class="header-anchor" href="#权限管理" aria-hidden="true">#</a> 权限管理</h1><h2 id="_1、创建用户" tabindex="-1"><a class="header-anchor" href="#_1、创建用户" aria-hidden="true">#</a> 1、创建用户</h2><p>CREATE USER <code>ln_write_user</code> 'write_pwd'</p><p>CREATE USER <code>sgcc_write_user</code> 'write_pwd'</p><h2 id="_2、展示用户" tabindex="-1"><a class="header-anchor" href="#_2、展示用户" aria-hidden="true">#</a> 2、展示用户</h2><p>LIST USER</p><h2 id="_3、赋予用户权限" tabindex="-1"><a class="header-anchor" href="#_3、赋予用户权限" aria-hidden="true">#</a> 3、赋予用户权限</h2><p>INSERT INTO root.ln.wf01.wt01(timestamp,status) values(1509465600000,true)</p><p>系统不允许用户进行此操作，会提示错误：</p><p>IoTDB> INSERT INTO root.ln.wf01.wt01(timestamp,status) values(1509465600000,true)</p><p>Msg: 602: No permissions for this operation, please add privilege INSERT_TIMESERIES.</p><p>用root用户分别赋予他们向对应 database 数据的写入权限</p><p>GRANT USER <code>ln_write_user</code> PRIVILEGES INSERT_TIMESERIES on root.ln.**</p><p>GRANT USER <code>sgcc_write_user</code> PRIVILEGES INSERT_TIMESERIES on root.sgcc1.<strong>, root.sgcc2.</strong></p><p>GRANT USER <code>ln_write_user</code> PRIVILEGES CREATE_USER</p><p>使用ln_write_user再尝试写入数据</p><p>IoTDB> INSERT INTO root.ln.wf01.wt01(timestamp, status) values(1509465600000, true)</p><p>Msg: The statement is executed successfully.</p><h2 id="_4、撤销用户权限" tabindex="-1"><a class="header-anchor" href="#_4、撤销用户权限" aria-hidden="true">#</a> 4、撤销用户权限</h2><p>用root用户撤销ln_write_user和sgcc_write_user的权限：</p><p>REVOKE USER <code>ln_write_user</code> PRIVILEGES INSERT_TIMESERIES on root.ln.**</p><p>REVOKE USER <code>sgcc_write_user</code> PRIVILEGES INSERT_TIMESERIES on root.sgcc1.<strong>, root.sgcc2.</strong></p><p>REVOKE USER <code>ln_write_user</code> PRIVILEGES CREATE_USER</p><p>撤销权限后，ln_write_user就没有向root.ln.**写入数据的权限了</p><p>INSERT INTO root.ln.wf01.wt01(timestamp, status) values(1509465600000, true)</p><p>Msg: 602: No permissions for this operation, please add privilege INSERT_TIMESERIES.</p><h3 id="_5、sql-语句" tabindex="-1"><a class="header-anchor" href="#_5、sql-语句" aria-hidden="true">#</a> 5、SQL 语句</h3><ul><li>创建用户</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>CREATE USER <userName> <password>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > CREATE USER <code>thulab</code> 'passwd';</p><ul><li>删除用户</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>DROP USER <userName>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > DROP USER <code>xiaoming</code>;</p><ul><li>创建角色</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>CREATE ROLE <roleName>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > CREATE ROLE <code>admin</code>;</p><ul><li>删除角色</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>DROP USER <userName>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > DROP USER <code>xiaoming</code>;</p><ul><li>赋予用户权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>GRANT USER <userName> PRIVILEGES <privileges> ON <nodeNames>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > GRANT USER <code>tempuser</code> PRIVILEGES INSERT_TIMESERIES, DELETE_TIMESERIES on root.ln.<strong>, root.sgcc.</strong>;</p><p>Eg: IoTDB > GRANT USER <code>tempuser</code> PRIVILEGES CREATE_ROLE;</p><ul><li>赋予用户全部的权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>GRANT USER <userName> PRIVILEGES ALL; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > GRANT USER <code>tempuser</code> PRIVILEGES ALL;</p><ul><li>赋予角色权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>GRANT ROLE <roleName> PRIVILEGES <privileges> ON <nodeNames>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > GRANT ROLE <code>temprole</code> PRIVILEGES INSERT_TIMESERIES, DELETE_TIMESERIES ON root.sgcc.<strong>, root.ln.</strong>;</p><p>Eg: IoTDB > GRANT ROLE <code>temprole</code> PRIVILEGES CREATE_ROLE;</p><ul><li>赋予角色全部的权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>GRANT ROLE <roleName> PRIVILEGES ALL; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > GRANT ROLE <code>temprole</code> PRIVILEGES ALL;</p><ul><li>赋予用户角色</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>GRANT <roleName> TO <userName>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > GRANT <code>temprole</code> TO tempuser;</p><ul><li>撤销用户权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>REVOKE USER <userName> PRIVILEGES <privileges> ON <nodeNames>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > REVOKE USER <code>tempuser</code> PRIVILEGES DELETE_TIMESERIES on root.ln.**;</p><p>Eg: IoTDB > REVOKE USER <code>tempuser</code> PRIVILEGES CREATE_ROLE;</p><ul><li>移除用户所有权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>REVOKE USER <userName> PRIVILEGES ALL; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > REVOKE USER <code>tempuser</code> PRIVILEGES ALL;</p><ul><li>撤销角色权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>REVOKE ROLE <roleName> PRIVILEGES <privileges> ON <nodeNames>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > REVOKE ROLE <code>temprole</code> PRIVILEGES DELETE_TIMESERIES ON root.ln.**;</p><p>Eg: IoTDB > REVOKE ROLE <code>temprole</code> PRIVILEGES CREATE_ROLE;</p><ul><li>撤销角色全部的权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>REVOKE ROLE <roleName> PRIVILEGES ALL; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > REVOKE ROLE <code>temprole</code> PRIVILEGES ALL;</p><ul><li>撤销用户角色</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>REVOKE <roleName> FROM <userName>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > REVOKE <code>temprole</code> FROM tempuser;</p><ul><li>列出所有用户</li></ul><p>LIST USER</p><p>Eg: IoTDB > LIST USER</p><ul><li>列出指定角色下所有用户</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>LIST USER OF ROLE <roleName>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > LIST USER OF ROLE <code>roleuser</code>;</p><ul><li>列出所有角色</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>REVOKE <roleName> FROM <userName>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > REVOKE <code>temprole</code> FROM tempuser;</p><ul><li>列出指定用户下所有角色</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>LIST USER OF ROLE <roleName>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > LIST USER OF ROLE <code>roleuser</code>;</p><ul><li>列出用户所有权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>LIST PRIVILEGES USER <username>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > LIST PRIVILEGES USER <code>tempuser</code>;</p><ul><li>列出用户在具体路径上相关联的权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>LIST PRIVILEGES USER <username> ON <paths>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB> LIST PRIVILEGES USER <code>tempuser</code> ON root.ln.<strong>, root.ln.wf01.</strong>;</p><p>IoTDB> LIST PRIVILEGES USER <code>tempuser</code> ON root.ln.wf01.wt01.**;</p><ul><li>列出角色所有权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>LIST PRIVILEGES ROLE <roleName>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > LIST PRIVILEGES ROLE <code>actor</code>;</p><ul><li>列出角色在具体路径上相关联的权限</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>LIST PRIVILEGES ROLE <roleName> ON <paths>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB> LIST PRIVILEGES ROLE <code>temprole</code> ON root.ln.<strong>, root.ln.wf01.wt01.</strong>;</p><p>IoTDB> LIST PRIVILEGES ROLE <code>temprole</code> ON root.ln.wf01.wt01.**;</p><ul><li>更新密码</li></ul><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>ALTER USER <username> SET PASSWORD <password>; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Eg: IoTDB > ALTER USER <code>tempuser</code> SET PASSWORD 'newpwd';</p><h3 id="_6、非root用户限制进行的操作" tabindex="-1"><a class="header-anchor" href="#_6、非root用户限制进行的操作" aria-hidden="true">#</a> 6、非root用户限制进行的操作</h3><h6 id="tsfile管理" tabindex="-1"><a class="header-anchor" href="#tsfile管理" aria-hidden="true">#</a> TsFile管理</h6><ul><li>加载TsFile</li></ul><p>Eg: IoTDB > load '/Users/Desktop/data/1575028885956-101-0.tsfile'</p><ul><li>删除TsFile文件</li></ul><p>Eg: IoTDB > remove '/Users/Desktop/data/data/root.vehicle/0/0/1575028885956-101-0.tsfile'</p><ul><li>卸载TsFile文件到指定目录</li></ul><p>Eg: IoTDB > unload '/Users/Desktop/data/data/root.vehicle/0/0/1575028885956-101-0.tsfile' '/data/data/tmp'</p><h6 id="删除时间分区-实验性功能" tabindex="-1"><a class="header-anchor" href="#删除时间分区-实验性功能" aria-hidden="true">#</a> 删除时间分区（实验性功能）</h6><ul><li>删除时间分区（实验性功能）</li></ul><p>Eg: IoTDB > DELETE PARTITION root.ln 0,1,2</p><h6 id="连续查询" tabindex="-1"><a class="header-anchor" href="#连续查询" aria-hidden="true">#</a> 连续查询</h6><ul><li>连续查询(CQ)</li></ul><p>Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO temperature_max FROM root.ln.<em>.</em> GROUP BY time(10s) END</p><h6 id="运维命令" tabindex="-1"><a class="header-anchor" href="#运维命令" aria-hidden="true">#</a> 运维命令</h6><ul><li>FLUSH</li></ul><p>Eg: IoTDB > flush</p><ul><li>MERGE</li></ul><p>Eg: IoTDB > MERGE</p><p>Eg: IoTDB > FULL MERGE</p><ul><li>CLEAR CACHE</li></ul><p>Eg: IoTDB > CLEAR CACHE</p><ul><li>SET STSTEM TO READONLY / WRITABLE</li></ul><p>Eg: IoTDB > SET STSTEM TO READONLY / WRITABLE</p><ul><li>SCHEMA SNAPSHOT</li></ul><p>Eg: IoTDB > CREATE SNAPSHOT FOR SCHEMA</p><ul><li>查询终止</li></ul><p>Eg: IoTDB > KILL QUERY 1</p><h6 id="水印工具" tabindex="-1"><a class="header-anchor" href="#水印工具" aria-hidden="true">#</a> 水印工具</h6><ul><li>为新用户施加水印</li></ul><p>Eg: IoTDB > grant watermark_embedding to Alice</p><ul><li>撤销水印</li></ul><p>Eg: IoTDB > revoke watermark_embedding from Alice</p><h1 id="运维命令-1" tabindex="-1"><a class="header-anchor" href="#运维命令-1" aria-hidden="true">#</a> 运维命令</h1><h2 id="_1、flush" tabindex="-1"><a class="header-anchor" href="#_1、flush" aria-hidden="true">#</a> 1、FLUSH</h2><p>IoTDB> FLUSH</p><p>IoTDB> FLUSH ON LOCAL</p><p>IoTDB> FLUSH ON CLUSTER</p><p>IoTDB> FLUSH root.ln</p><p>IoTDB> FLUSH root.sg1,root.sg2 ON LOCAL</p><p>IoTDB> FLUSH root.sg1,root.sg2 ON CLUSTER</p><h2 id="_2、clear-cache" tabindex="-1"><a class="header-anchor" href="#_2、clear-cache" aria-hidden="true">#</a> 2、CLEAR CACHE</h2><p>IoTDB> CLEAR CACHE</p><p>IoTDB> CLEAR CACHE ON LOCAL</p><p>IoTDB> CLEAR CACHE ON CLUSTER</p><h2 id="_3、set-system-to-readonly-running" tabindex="-1"><a class="header-anchor" href="#_3、set-system-to-readonly-running" aria-hidden="true">#</a> 3、SET SYSTEM TO READONLY / RUNNING</h2><p>IoTDB> SET SYSTEM TO RUNNING</p><p>IoTDB> SET SYSTEM TO READONLY ON LOCAL</p><p>IoTDB> SET SYSTEM TO READONLY ON CLUSTER</p><h2 id="_4、终止查询" tabindex="-1"><a class="header-anchor" href="#_4、终止查询" aria-hidden="true">#</a> 4、终止查询</h2><h3 id="查询超时" tabindex="-1"><a class="header-anchor" href="#查询超时" aria-hidden="true">#</a> 查询超时</h3><p>IoTDB> select * from root.**;</p><p>Msg: 701 Current query is time out, please check your statement or modify timeout parameter.</p><h3 id="查询终止" tabindex="-1"><a class="header-anchor" href="#查询终止" aria-hidden="true">#</a> 查询终止</h3><h4 id="终止指定查询" tabindex="-1"><a class="header-anchor" href="#终止指定查询" aria-hidden="true">#</a> 终止指定查询</h4><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>KILL QUERY <queryId> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h5 id="示例" tabindex="-1"><a class="header-anchor" href="#示例" aria-hidden="true">#</a> 示例</h5><p>kill query '20221205_114444_00003_5'</p><h4 id="终止所有查询" tabindex="-1"><a class="header-anchor" href="#终止所有查询" aria-hidden="true">#</a> 终止所有查询</h4><p>KILL ALL QUERIES</p><h2 id="_5、show-queries" tabindex="-1"><a class="header-anchor" href="#_5、show-queries" aria-hidden="true">#</a> 5、SHOW QUERIES</h2><h3 id="语法-1" tabindex="-1"><a class="header-anchor" href="#语法-1" aria-hidden="true">#</a> 语法</h3><p>SHOW QUERIES | (QUERY PROCESSLIST)</p><p>[WHERE whereCondition]</p><p>[ORDER BY sortKey {ASC | DESC}]</p><p>[LIMIT rowLimit] [OFFSET rowOffset]</p><h3 id="sql示例" tabindex="-1"><a class="header-anchor" href="#sql示例" aria-hidden="true">#</a> SQL示例</h3><h4 id="示例1-获取当前所有执行时间大于30s的查询" tabindex="-1"><a class="header-anchor" href="#示例1-获取当前所有执行时间大于30s的查询" aria-hidden="true">#</a> 示例1：获取当前所有执行时间大于30s的查询</h4><p>SHOW QUERIES WHERE ElapsedTime > 30</p><h4 id="示例2-获取当前执行耗时top5的查询" tabindex="-1"><a class="header-anchor" href="#示例2-获取当前执行耗时top5的查询" aria-hidden="true">#</a> 示例2：获取当前执行耗时Top5的查询</h4><p>SHOW QUERIES limit 5</p><p>SHOW QUERIES ORDER BY ElapsedTime DESC limit 5</p><h1 id="tsfile-同步" tabindex="-1"><a class="header-anchor" href="#tsfile-同步" aria-hidden="true">#</a> TsFile 同步</h1><h2 id="快速上手" tabindex="-1"><a class="header-anchor" href="#快速上手" aria-hidden="true">#</a> 快速上手</h2><ul><li>创建接收端为 IoTDB 类型的 Pipe Sink</li></ul><p>IoTDB> CREATE PIPESINK my_iotdb AS IoTDB (ip='接收端IP', port='接收端端口')</p><ul><li>创建同步任务Pipe（请确保接收端 IoTDB 已经启动）</li></ul><p>IoTDB> CREATE PIPE my_pipe TO my_iotdb</p><ul><li>开始同步任务</li></ul><p>IoTDB> START PIPE my_pipe</p><ul><li>显示所有同步任务状态</li></ul><p>IoTDB> SHOW PIPES</p><ul><li>暂停任务</li></ul><p>IoTDB> STOP PIPE my_pipe</p><ul><li>继续被暂停的任务</li></ul><p>IoTDB> START PIPE my_pipe</p><ul><li>关闭任务（状态信息将被删除）</li></ul><p>IoTDB> DROP PIPE my_pipe</p><h2 id="sql" tabindex="-1"><a class="header-anchor" href="#sql" aria-hidden="true">#</a> SQL</h2><h3 id="show-pipesinktype" tabindex="-1"><a class="header-anchor" href="#show-pipesinktype" aria-hidden="true">#</a> SHOW PIPESINKTYPE</h3><p>IoTDB> SHOW PIPESINKTYPE</p><h3 id="create-pipesink" tabindex="-1"><a class="header-anchor" href="#create-pipesink" aria-hidden="true">#</a> CREATE PIPESINK</h3><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>IoTDB> CREATE PIPESINK <PipeSinkName> AS IoTDB [(ip='127.0.0.1',port=6667);] |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="drop-pipesink" tabindex="-1"><a class="header-anchor" href="#drop-pipesink" aria-hidden="true">#</a> DROP PIPESINK</h3><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>IoTDB> DROP PIPESINK <PipeSinkName> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="show-pipesink" tabindex="-1"><a class="header-anchor" href="#show-pipesink" aria-hidden="true">#</a> SHOW PIPESINK</h3><p>IoTDB> SHOW PIPESINKS IoTDB> SHOW PIPESINK [PipeSinkName]</p><h3 id="create-pipe" tabindex="-1"><a class="header-anchor" href="#create-pipe" aria-hidden="true">#</a> CREATE PIPE</h3><p>IoTDB> CREATE PIPE my_pipe TO my_iotdb [FROM (select ** from root WHERE time>=yyyy-mm-dd HH:MM:SS)]</p><h3 id="stop-pipe" tabindex="-1"><a class="header-anchor" href="#stop-pipe" aria-hidden="true">#</a> STOP PIPE</h3><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>IoTDB> STOP PIPE <PipeName> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="start-pipe" tabindex="-1"><a class="header-anchor" href="#start-pipe" aria-hidden="true">#</a> START PIPE</h3><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>IoTDB> START PIPE <PipeName> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="drop-pipe" tabindex="-1"><a class="header-anchor" href="#drop-pipe" aria-hidden="true">#</a> DROP PIPE</h3><div class="language-Go line-numbers-mode" data-ext="Go"><pre class="language-Go"><code>IoTDB> DROP PIPE <PipeName> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="show-pipe" tabindex="-1"><a class="header-anchor" href="#show-pipe" aria-hidden="true">#</a> SHOW PIPE</h3><p>IoTDB> SHOW PIPES</p><p>IoTDB> SHOW PIPE [PipeName]</p><hr class="footnotes-sep"><section class="footnotes"><ol class="footnotes-list"><li id="footnote1" class="footnote-item"><p>A-Za-z <a href="#footnote-ref1" class="footnote-backref">↩︎</a></p></li><li id="footnote2" class="footnote-item"><p>a-z <a href="#footnote-ref2" class="footnote-backref">↩︎</a></p></li><li id="footnote3" class="footnote-item"><p>A-Za-z <a href="#footnote-ref3" class="footnote-backref">↩︎</a></p></li><li id="footnote4" class="footnote-item"><p>a-z <a href="#footnote-ref4" class="footnote-backref">↩︎</a></p></li></ol></section>`,226);function U(M,F){const s=o("ExternalLinkIcon");return i(),d("div",null,[l,a("p",null,[e("Create template(s1 int, s2 float) on "),a("a",c,[e("root.sg"),t(s)])]),h,a("p",null,[e("select (a + b) * 2 + sin(a) from "),a("a",u,[e("root.sg"),t(s)])]),m,g,f,a("p",null,[e("select (a + b) * 3 from "),a("a",E,[e("root.sg"),t(s)]),e(", root.ln")]),b,a("p",null,[e("select count(charging_stauts), first_value(soc) from "),a("a",k,[e("root.sg"),t(s)]),e(" group by count(charging_status,5)")]),v,a("p",null,[e("select count(charging_stauts), first_value(soc) from "),a("a",T,[e("root.sg"),t(s)]),e(" group by count(charging_status,5,ignoreNull=false)")]),w,a("p",null,[e("from "),a("a",x,[e("root.sg"),t(s)]),e(";")]),I,a("p",null,[e("select * into root.sg_bk.:😦:😃 from "),a("a",_,[e("root.sg"),t(s)]),e(".**;")]),S,a("p",null,[e("select * into ::(backup_${4}) from "),a("a",R,[e("root.sg"),t(s)]),e(".** align by device;")]),q,a("p",null,[e("CREATE FUNCTION example AS 'org.apache.iotdb.udf.UDTFExample' USING URI '"),a("a",L,[e("http://jar/example.jar"),t(s)]),e("'")]),y,a("p",null,[e("SELECT cast(s1 as INT32) from "),a("a",N,[e("root.sg"),t(s)])]),O,a("p",null,[e("使用Grafana的"),a("a",A,[e("模板变量"),t(s)])]),D,a("p",null,[e("ON "),a("a",G,[e("root.sg"),t(s)]),e(".**")]),P,a("p",null,[e("USING URI '"),a("a",B,[e("http://jar/ClusterAlertingExample.jar"),t(s)]),e("'")]),C])}const H=r(p,[["render",U],["__file","SQL-Manual.html.vue"]]);export{H as default}; |
