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947.289h669.74a134.36 134.36 0 00133.94-133.938V277.595a134.314 134.314 0 00-133.94-133.938zm33.473 267.877H147.126a33.145 33.145 0 01-33.473-33.473c0-18.752 14.72-33.473 33.473-33.473h736.687c18.752 0 33.472 14.72 33.472 33.473a33.145 33.145 0 01-33.472 33.473z"></path></svg><span><!----></span><meta property="datePublished" content="2023-10-25T10:37:38.000Z"></span><!----><span class="page-reading-time-info" aria-label="阅读时间"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon"><path d="M799.387 122.15c4.402-2.978 7.38-7.897 7.38-13.463v-1.165c0-8.933-7.38-16.312-16.312-16.312H256.33c-8.933 0-16.311 7.38-16.311 16.312v1.165c0 5.825 2.977 10.874 7.637 13.592 4.143 194.44 97.22 354.963 220.201 392.763-122.204 37.542-214.893 196.511-220.2 389.397-4.661 5.049-7.638 11.651-7.638 19.03v5.825h566.49v-5.825c0-7.379-2.849-13.981-7.509-18.9-5.049-193.016-97.867-351.985-220.2-389.527 123.24-37.67 216.446-198.453 220.588-392.892zM531.16 450.445v352.632c117.674 1.553 211.787 40.778 211.787 88.676H304.097c0-48.286 95.149-87.382 213.728-88.676V450.445c-93.077-3.107-167.901-81.297-167.901-177.093 0-8.803 6.99-15.793 15.793-15.793 8.803 0 15.794 6.99 15.794 15.793 0 80.261 63.69 145.635 142.01 145.635s142.011-65.374 142.011-145.635c0-8.803 6.99-15.793 15.794-15.793s15.793 6.99 15.793 15.793c0 95.019-73.789 172.82-165.96 177.093z"></path></svg><span>大约 28 分钟</span><meta property="timeRequired" content="PT28M"></span><!----><!----></div><hr></div><div class="toc-place-holder"><aside id="toc"><!--[--><!----><!--]--><div class="toc-header">此页内容<button type="button" class="print-button" title="打印"><svg xmlns="http://www.w3.org/2000/svg" class="icon print-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="print icon"><path d="M819.2 364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button></div><div class="toc-wrapper"><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#元数据操作">元数据操作</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_1、数据库管理">1、数据库管理</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_2、时间序列管理">2、时间序列管理</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_3、时间序列路径管理">3、时间序列路径管理</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_4、设备模板管理">4、设备模板管理</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_5、数据存活时间管理">5、数据存活时间管理</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#写入数据">写入数据</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_1、写入单列数据">1、写入单列数据</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_2、写入多列数据">2、写入多列数据</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_3、使用服务器时间戳">3、使用服务器时间戳</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_4、写入对齐时间序列数据">4、写入对齐时间序列数据</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_5、加载-tsfile-文件数据">5、加载 TsFile 文件数据</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#删除数据">删除数据</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_1、删除单列数据">1、删除单列数据</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_2、删除多列数据">2、删除多列数据</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#数据查询">数据查询</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_1、基础查询">1、基础查询</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_2、选择表达式">2、选择表达式</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_3、查询过滤条件">3、查询过滤条件</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_4、分段分组聚合">4、分段分组聚合</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_5、聚合结果过滤">5、聚合结果过滤</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_6、结果集补空值">6、结果集补空值</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_7、查询结果分页">7、查询结果分页</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_8、排序">8、排序</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_9、查询对齐模式">9、查询对齐模式</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_10、查询写回-select-into">10、查询写回（SELECT INTO）</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#运算符-1">运算符</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#算数运算符">算数运算符</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#比较运算符">比较运算符</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#逻辑运算符">逻辑运算符</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#内置函数">内置函数</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#aggregate-functions">Aggregate Functions</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#算数函数">算数函数</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#比较函数">比较函数</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#字符串处理函数">字符串处理函数</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#数据类型转换函数">数据类型转换函数</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#常序列生成函数">常序列生成函数</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#选择函数">选择函数</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#区间查询函数">区间查询函数</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#趋势计算函数">趋势计算函数</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#采样函数">采样函数</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#时间序列处理函数">时间序列处理函数</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#数据质量函数库">数据质量函数库</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#数据质量">数据质量</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#数据画像">数据画像</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#异常检测">异常检测</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#频域分析">频域分析</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#数据匹配">数据匹配</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#数据修复">数据修复</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#序列发现">序列发现</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#机器学习">机器学习</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#lambda-表达式">Lambda 表达式</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#条件表达式">条件表达式</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#触发器">触发器</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#使用-sql-语句注册该触发器">使用 SQL 语句注册该触发器</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#卸载触发器">卸载触发器</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#查询触发器">查询触发器</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#连续查询-continuous-query-cq">连续查询（Continuous Query, CQ）</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#语法">语法</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#连续查询的管理">连续查询的管理</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#用户自定义函数">用户自定义函数</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#udfparameters">UDFParameters</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#udf-注册">UDF 注册</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#udf-卸载">UDF 卸载</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#udf-查询">UDF 查询</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#查看所有注册的-udf">查看所有注册的 UDF</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level2" href="/#权限管理">权限管理</a></li><li><ul class="toc-list"><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_1、创建用户">1、创建用户</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_2、展示用户">2、展示用户</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_3、赋予用户权限">3、赋予用户权限</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_4、撤销用户权限">4、撤销用户权限</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_5、sql-语句">5、SQL 语句</a></li><!----><!--]--><!--[--><li class="toc-item"><a class="vp-link toc-link level3" href="/#_6、非root用户限制进行的操作">6、非root用户限制进行的操作</a></li><!----><!--]--></ul></li><!--]--></ul><div class="toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!----><div class="theme-hope-content"><h1 id="sql手册" tabindex="-1"><a class="header-anchor" href="#sql手册" aria-hidden="true">#</a> SQL手册</h1><h2 id="元数据操作" tabindex="-1"><a class="header-anchor" href="#元数据操作" aria-hidden="true">#</a> 元数据操作</h2><h3 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</h3><h4 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</h4><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><h4 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</h4><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><h4 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</h4><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><h4 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</h4><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><h3 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</h3><h4 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</h4><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><h4 id="创建对齐时间序列" tabindex="-1"><a class="header-anchor" href="#创建对齐时间序列" aria-hidden="true">#</a> 创建对齐时间序列</h4><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><h4 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</h4><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><h4 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</h4><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><h4 id="统计时间序列数量" tabindex="-1"><a class="header-anchor" href="#统计时间序列数量" aria-hidden="true">#</a> 统计时间序列数量</h4><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><h4 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</h4><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><h3 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</h3><h4 id="查看路径的所有子路径" tabindex="-1"><a class="header-anchor" href="#查看路径的所有子路径" aria-hidden="true">#</a> 查看路径的所有子路径</h4><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><h4 id="查看路径的所有子节点" tabindex="-1"><a class="header-anchor" href="#查看路径的所有子节点" aria-hidden="true">#</a> 查看路径的所有子节点</h4><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><h4 id="查看设备" tabindex="-1"><a class="header-anchor" href="#查看设备" aria-hidden="true">#</a> 查看设备</h4><p>IoTDB> show devices</p><p>IoTDB> show devices root.ln.**</p><h5 id="查看设备及其-database-信息" tabindex="-1"><a class="header-anchor" href="#查看设备及其-database-信息" aria-hidden="true">#</a> 查看设备及其 database 信息</h5><p>IoTDB> show devices with database</p><p>IoTDB> show devices root.ln.** with database</p><h4 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</h4><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><h4 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</h4><p>IoTDB> show devices</p><p>IoTDB> count devices</p><p>IoTDB> count devices root.ln.**</p><h3 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</h3><figure><img src="https://alioss.timecho.com/docs/img/模板.png" alt="img" tabindex="0" loading="lazy"><figcaption>img</figcaption></figure><p>Create template(s1 int, s2 float) on <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></p><p>Create device root.sg.d1</p><figure><img src="https://alioss.timecho.com/docs/img/模板流程.png" alt="img" tabindex="0" loading="lazy"><figcaption>img</figcaption></figure><h4 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</h4><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><h4 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</h4><p>IoTDB> set SCHEMA TEMPLATE t1 to root.sg1</p><h4 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</h4><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><h4 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</h4><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><h4 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</h4><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><h4 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</h4><p>IoTDB> unset schema template t1 from root.sg1.d1</p><h4 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</h4><p>IoTDB> drop schema template t1</p><h3 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</h3><h4 id="设置-ttl" tabindex="-1"><a class="header-anchor" href="#设置-ttl" aria-hidden="true">#</a> 设置 TTL</h4><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><h4 id="取消-ttl" tabindex="-1"><a class="header-anchor" href="#取消-ttl" aria-hidden="true">#</a> 取消 TTL</h4><p>IoTDB> unset ttl to root.ln</p><p>IoTDB> unset ttl to root.sgcc.**</p><p>IoTDB> unset ttl to root.**</p><h4 id="显示-ttl" tabindex="-1"><a class="header-anchor" href="#显示-ttl" aria-hidden="true">#</a> 显示 TTL</h4><p>IoTDB> SHOW ALL TTL</p><p>IoTDB> SHOW TTL ON StorageGroupNames</p><h2 id="写入数据" tabindex="-1"><a class="header-anchor" href="#写入数据" aria-hidden="true">#</a> 写入数据</h2><h3 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</h3><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><h3 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</h3><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><h3 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</h3><p>IoTDB > insert into root.ln.wf02.wt02(status, hardware) values (false, 'v2')</p><h3 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</h3><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><h3 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</h3><p>load '<path/dir>' [sglevel=int][verify=true/false][onSuccess=delete/none]</p><h4 id="通过指定文件路径-绝对路径-加载单-tsfile-文件" tabindex="-1"><a class="header-anchor" href="#通过指定文件路径-绝对路径-加载单-tsfile-文件" aria-hidden="true">#</a> 通过指定文件路径(绝对路径)加载单 tsfile 文件</h4><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><h4 id="通过指定文件夹路径-绝对路径-批量加载文件" tabindex="-1"><a class="header-anchor" href="#通过指定文件夹路径-绝对路径-批量加载文件" aria-hidden="true">#</a> 通过指定文件夹路径(绝对路径)批量加载文件</h4><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><h2 id="删除数据" tabindex="-1"><a class="header-anchor" href="#删除数据" aria-hidden="true">#</a> 删除数据</h2><h3 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</h3><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><h3 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</h3><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><h2 id="数据查询" tabindex="-1"><a class="header-anchor" href="#数据查询" aria-hidden="true">#</a> 数据查询</h2><h3 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</h3><h4 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</h4><p>select temperature from root.ln.wf01.wt01 where time < 2017-11-01T00:08:00.000</p><h4 id="根据一个时间区间选择多列数据" tabindex="-1"><a class="header-anchor" href="#根据一个时间区间选择多列数据" aria-hidden="true">#</a> 根据一个时间区间选择多列数据</h4><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><h4 id="按照多个时间区间选择同一设备的多列数据" tabindex="-1"><a class="header-anchor" href="#按照多个时间区间选择同一设备的多列数据" aria-hidden="true">#</a> 按照多个时间区间选择同一设备的多列数据</h4><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><h4 id="按照多个时间区间选择不同设备的多列数据" tabindex="-1"><a class="header-anchor" href="#按照多个时间区间选择不同设备的多列数据" aria-hidden="true">#</a> 按照多个时间区间选择不同设备的多列数据</h4><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><h4 id="根据时间降序返回结果集" tabindex="-1"><a class="header-anchor" href="#根据时间降序返回结果集" aria-hidden="true">#</a> 根据时间降序返回结果集</h4><p>select * from root.ln.** where time > 1 order by time desc limit 10;</p><h3 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</h3><h4 id="使用别名" tabindex="-1"><a class="header-anchor" href="#使用别名" aria-hidden="true">#</a> 使用别名</h4><p>select s1 as temperature, s2 as speed from root.ln.wf01.wt01;</p><h4 id="运算符" tabindex="-1"><a class="header-anchor" href="#运算符" aria-hidden="true">#</a> 运算符</h4><h4 id="函数" tabindex="-1"><a class="header-anchor" href="#函数" aria-hidden="true">#</a> 函数</h4><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><h5 id="时间序列查询嵌套表达式" tabindex="-1"><a class="header-anchor" href="#时间序列查询嵌套表达式" aria-hidden="true">#</a> 时间序列查询嵌套表达式</h5><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><p>select (a + b) * 2 + sin(a) from <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></p><p>示例 3：</p><p>select (a + *) / 2 from root.sg1</p><p>示例 4：</p><p>select (a + b) * 3 from <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>, root.ln</p><h5 id="聚合查询嵌套表达式" tabindex="-1"><a class="header-anchor" href="#聚合查询嵌套表达式" aria-hidden="true">#</a> 聚合查询嵌套表达式</h5><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><h4 id="最新点查询" tabindex="-1"><a class="header-anchor" href="#最新点查询" aria-hidden="true">#</a> 最新点查询</h4><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><h3 id="_3、查询过滤条件" tabindex="-1"><a class="header-anchor" href="#_3、查询过滤条件" aria-hidden="true">#</a> 3、查询过滤条件</h3><h4 id="时间过滤条件" tabindex="-1"><a class="header-anchor" href="#时间过滤条件" aria-hidden="true">#</a> 时间过滤条件</h4><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><h4 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</h4><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><h4 id="模糊查询" tabindex="-1"><a class="header-anchor" href="#模糊查询" aria-hidden="true">#</a> 模糊查询</h4><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><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> select * from root.sg.d1 where value regexp '^[A-Za-z]+$' |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>查询 root.sg.d1 下 value 值为26个小写英文字符组成的字符串且时间大于100的</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>IoTDB> select * from root.sg.d1 where value regexp '^[a-z]+$' and time > 100 |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="_4、分段分组聚合" tabindex="-1"><a class="header-anchor" href="#_4、分段分组聚合" aria-hidden="true">#</a> 4、分段分组聚合</h3><h4 id="未指定滑动步长的时间区间分组聚合查询" tabindex="-1"><a class="header-anchor" href="#未指定滑动步长的时间区间分组聚合查询" 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><h4 id="路径层级分组聚合" tabindex="-1"><a class="header-anchor" href="#路径层级分组聚合" aria-hidden="true">#</a> 路径层级分组聚合</h4><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><h4 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</h4><h5 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</h5><p>SELECT AVG(temperature) FROM root.factory1.** GROUP BY TAGS(city);</p><h5 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</h5><p>SELECT avg(temperature) FROM root.factory1.** GROUP BY TAGS(city, workshop);</p><h5 id="基于时间区间的标签聚合查询" tabindex="-1"><a class="header-anchor" href="#基于时间区间的标签聚合查询" aria-hidden="true">#</a> 基于时间区间的标签聚合查询</h5><p>SELECT AVG(temperature) FROM root.factory1.** GROUP BY ([1000, 10000), 5s), TAGS(city, workshop);</p><h4 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</h4><p>group by variation(controlExpression[,delta][,ignoreNull=true/false])</p><h5 id="delta-0时的等值事件分段" tabindex="-1"><a class="header-anchor" href="#delta-0时的等值事件分段" aria-hidden="true">#</a> delta=0时的等值事件分段</h5><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><h5 id="delta-0时的差值事件分段" tabindex="-1"><a class="header-anchor" href="#delta-0时的差值事件分段" aria-hidden="true">#</a> delta!=0时的差值事件分段</h5><p>select __endTime, avg(s1), count(s2), sum(s3) from root.sg.d group by variation(s6, 4)</p><h4 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</h4><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><h4 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</h4><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><h4 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</h4><p>group by count(controlExpression, size[,ignoreNull=true/false])</p><p>select count(charging_stauts), first_value(soc) from <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a> group by count(charging_status,5)</p><p>当使用ignoreNull将null值也考虑进来</p><p>select count(charging_stauts), first_value(soc) from <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a> group by count(charging_status,5,ignoreNull=false)</p><h3 id="_5、聚合结果过滤" tabindex="-1"><a class="header-anchor" href="#_5、聚合结果过滤" aria-hidden="true">#</a> 5、聚合结果过滤</h3><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><h3 id="_6、结果集补空值" tabindex="-1"><a class="header-anchor" href="#_6、结果集补空值" aria-hidden="true">#</a> 6、结果集补空值</h3><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><h3 id="_7、查询结果分页" tabindex="-1"><a class="header-anchor" href="#_7、查询结果分页" aria-hidden="true">#</a> 7、查询结果分页</h3><h4 id="按行分页" tabindex="-1"><a class="header-anchor" href="#按行分页" aria-hidden="true">#</a> 按行分页</h4><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><h4 id="按列分页" tabindex="-1"><a class="header-anchor" href="#按列分页" aria-hidden="true">#</a> 按列分页</h4><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><h3 id="_8、排序" tabindex="-1"><a class="header-anchor" href="#_8、排序" aria-hidden="true">#</a> 8、排序</h3><p>时间对齐模式下的排序</p><p>select * from root.ln.** where time <= 2017-11-01T00:01:00 order by time desc;</p><p>设备对齐模式下的排序</p><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><h3 id="_9、查询对齐模式" tabindex="-1"><a class="header-anchor" href="#_9、查询对齐模式" aria-hidden="true">#</a> 9、查询对齐模式</h3><h4 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</h4><p>select * from root.ln.** where time <= 2017-11-01T00:01:00 align by device;</p><h3 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）</h3><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><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code> |
| select s1, s2 |
| |
| into root.sg_copy.d1(::), root.sg_copy.d2(s1), root.sg_copy.d1(${3}), root.sg_copy.d2(::) |
| |
| from root.sg.d1, root.sg.d2; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>该语句等价于：</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code> |
| select s1, s2 |
| |
| into root.sg_copy.d1(s1), root.sg_copy.d2(s1), root.sg_copy.d1(s2), root.sg_copy.d2(s2) |
| |
| from root.sg.d1, root.sg.d2; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h6 id="_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符" tabindex="-1"><a class="header-anchor" href="#_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符" aria-hidden="true">#</a> （2）目标设备使用变量占位符 & 目标物理量列表不使用变量占位符</h6><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>select d1.s1, d1.s2, d2.s3, d3.s4 |
| |
| into ::(s1_1, s2_2), root.sg.d2_2(s3_3), root.${2}_copy.::(s4) |
| |
| from root.sg; |
| </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></div><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 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">#</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><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>select * into root.sg_bk.::(::) from root.sg.**; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h5 id="按设备对齐-使用-align-by-device" tabindex="-1"><a class="header-anchor" href="#按设备对齐-使用-align-by-device" 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><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code> |
| select s1, s2, s3, s4 |
| |
| into root.backup_sg.d1(s1, s2, s3, s4), root.backup_sg.d2(::), root.sg.d3(backup_${4}) |
| |
| from root.sg.d1, root.sg.d2, root.sg.d3 |
| |
| align by device; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h6 id="_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符-1" tabindex="-1"><a class="header-anchor" href="#_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符-1" aria-hidden="true">#</a> （2）目标设备使用变量占位符 & 目标物理量列表不使用变量占位符</h6><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code> |
| select avg(s1), sum(s2) + sum(s3), count(s4) |
| |
| into root.agg_${2}.::(avg_s1, sum_s2_add_s3, count_s4) |
| |
| from root.** |
| |
| align by device; |
| </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><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><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code> |
| select * into ::(backup_${4}) from root.sg.** align by device; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="指定目标序列为对齐序列" tabindex="-1"><a class="header-anchor" href="#指定目标序列为对齐序列" aria-hidden="true">#</a> 指定目标序列为对齐序列</h4><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code> |
| 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; |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="运算符-1" tabindex="-1"><a class="header-anchor" href="#运算符-1" aria-hidden="true">#</a> 运算符</h2><p>更多见文档<a href="/zh/UserGuide/Master/User-Manual/Operator-and-Expression.html" class="">Operator-and-Expression</a></p><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>更多见文档 <a href="/zh/UserGuide/Master/Operators-Functions/Mathematical.html" class="">Arithmetic Operators and Functions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> s1<span class="token punctuation">,</span> <span class="token operator">-</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> <span class="token operator">+</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">+</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">-</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">*</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">/</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">%</span> s2 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="比较运算符" tabindex="-1"><a class="header-anchor" href="#比较运算符" aria-hidden="true">#</a> 比较运算符</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Comparison.html" class="">Comparison Operators and Functions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token comment"># Basic comparison operators</span> |
| <span class="token keyword">select</span> a<span class="token punctuation">,</span> b<span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span><span class="token punctuation">,</span> a <span class="token operator"><=</span> b<span class="token punctuation">,</span> <span class="token operator">!</span><span class="token punctuation">(</span>a <span class="token operator"><=</span> b<span class="token punctuation">)</span><span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span> <span class="token operator">&&</span> a <span class="token operator">></span> b <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span> |
| |
| <span class="token comment"># `BETWEEN ... AND ...` operator</span> |
| <span class="token keyword">select</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">between</span> <span class="token number">36.5</span> <span class="token operator">and</span> <span class="token number">40</span><span class="token punctuation">;</span> |
| <span class="token keyword">select</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">not</span> <span class="token operator">between</span> <span class="token number">36.5</span> <span class="token operator">and</span> <span class="token number">40</span><span class="token punctuation">;</span> |
| |
| <span class="token comment"># Fuzzy matching operator: Use `Like` for fuzzy matching</span> |
| <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">like</span> <span class="token string">'%cc%'</span> |
| <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>device <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">like</span> <span class="token string">'_b_'</span> |
| |
| <span class="token comment"># Fuzzy matching operator: Use `Regexp` for fuzzy matching</span> |
| <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">regexp</span> <span class="token string">'^[A-Za-z]+$'</span> |
| <span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">regexp</span> <span class="token string">'^[a-z]+$'</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">100</span> |
| <span class="token keyword">select</span> b<span class="token punctuation">,</span> b <span class="token operator">like</span> <span class="token string">'1%'</span><span class="token punctuation">,</span> b <span class="token operator">regexp</span> <span class="token string">'[0-2]'</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span> |
| |
| <span class="token comment"># `IS NULL` operator</span> |
| <span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">is</span> <span class="token boolean">null</span><span class="token punctuation">;</span> |
| <span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">is</span> <span class="token operator">not</span> <span class="token boolean">null</span><span class="token punctuation">;</span> |
| |
| <span class="token comment"># `IN` operator</span> |
| <span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> code <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token string">'200'</span><span class="token punctuation">,</span> <span class="token string">'300'</span><span class="token punctuation">,</span> <span class="token string">'400'</span><span class="token punctuation">,</span> <span class="token string">'500'</span><span class="token punctuation">)</span><span class="token punctuation">;</span> |
| <span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> code <span class="token operator">not</span> <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token string">'200'</span><span class="token punctuation">,</span> <span class="token string">'300'</span><span class="token punctuation">,</span> <span class="token string">'400'</span><span class="token punctuation">,</span> <span class="token string">'500'</span><span class="token punctuation">)</span><span class="token punctuation">;</span> |
| <span class="token keyword">select</span> a<span class="token punctuation">,</span> a <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span> |
| </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 class="line-number"></div><div class="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="逻辑运算符" tabindex="-1"><a class="header-anchor" href="#逻辑运算符" aria-hidden="true">#</a> 逻辑运算符</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Logical.html" class="">Logical Operators</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> a<span class="token punctuation">,</span> b<span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span><span class="token punctuation">,</span> a <span class="token operator"><=</span> b<span class="token punctuation">,</span> <span class="token operator">!</span><span class="token punctuation">(</span>a <span class="token operator"><=</span> b<span class="token punctuation">)</span><span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span> <span class="token operator">&&</span> a <span class="token operator">></span> b <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h2 id="内置函数" tabindex="-1"><a class="header-anchor" href="#内置函数" aria-hidden="true">#</a> 内置函数</h2><p>更多见文档<a href="/zh/UserGuide/Master/User-Manual/Operator-and-Expression.html" class="">Operator-and-Expression</a></p><h3 id="aggregate-functions" tabindex="-1"><a class="header-anchor" href="#aggregate-functions" aria-hidden="true">#</a> Aggregate Functions</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Aggregation.html" class="">Aggregate Functions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span> |
| |
| <span class="token keyword">select</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">0</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">,</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">1</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>db<span class="token punctuation">.</span>d1<span class="token punctuation">;</span> |
| <span class="token keyword">select</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">0</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">1</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>db<span class="token punctuation">.</span>d1<span class="token punctuation">;</span> |
| |
| <span class="token keyword">select</span> time_duration<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>db<span class="token punctuation">.</span>d1<span class="token punctuation">;</span> |
| </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><h3 id="算数函数" tabindex="-1"><a class="header-anchor" href="#算数函数" aria-hidden="true">#</a> 算数函数</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Mathematical.html" class="">Arithmetic Operators and Functions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> s1<span class="token punctuation">,</span> sin<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> cos<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> tan<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">limit</span> <span class="token number">5</span> <span class="token keyword">offset</span> <span class="token number">1000</span><span class="token punctuation">;</span> |
| <span class="token keyword">select</span> s4<span class="token punctuation">,</span><span class="token function">round</span><span class="token punctuation">(</span>s4<span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token function">round</span><span class="token punctuation">(</span>s4<span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token function">round</span><span class="token punctuation">(</span>s4<span class="token punctuation">,</span><span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1<span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="比较函数" tabindex="-1"><a class="header-anchor" href="#比较函数" aria-hidden="true">#</a> 比较函数</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Comparison.html" class="">Comparison Operators and Functions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> ts<span class="token punctuation">,</span> on_off<span class="token punctuation">(</span>ts<span class="token punctuation">,</span> <span class="token string">'threshold'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span> |
| <span class="token keyword">select</span> ts<span class="token punctuation">,</span> in_range<span class="token punctuation">(</span>ts<span class="token punctuation">,</span> <span class="token string">'lower'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">,</span> <span class="token string">'upper'</span><span class="token operator">=</span><span class="token string">'3.1'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="字符串处理函数" tabindex="-1"><a class="header-anchor" href="#字符串处理函数" aria-hidden="true">#</a> 字符串处理函数</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/String.html" class="">String Processing</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> s1<span class="token punctuation">,</span> string_contains<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'s'</span><span class="token operator">=</span><span class="token string">'warn'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d4<span class="token punctuation">;</span> |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> string_matches<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'regex'</span><span class="token operator">=</span><span class="token string">'[^\\s]+37229'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d4<span class="token punctuation">;</span> |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> length<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> locate<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> locate<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span> <span class="token string">"reverse"</span><span class="token operator">=</span><span class="token string">"true"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> startswith<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> endswith<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> concat<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> <span class="token string">"target1"</span><span class="token operator">=</span><span class="token string">"IoT"</span><span class="token punctuation">,</span> <span class="token string">"target2"</span><span class="token operator">=</span><span class="token string">"DB"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> concat<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> <span class="token string">"target1"</span><span class="token operator">=</span><span class="token string">"IoT"</span><span class="token punctuation">,</span> <span class="token string">"target2"</span><span class="token operator">=</span><span class="token string">"DB"</span><span class="token punctuation">,</span> <span class="token string">"series_behind"</span><span class="token operator">=</span><span class="token string">"true"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> substring<span class="token punctuation">(</span>s1 <span class="token keyword">from</span> <span class="token number">1</span> <span class="token keyword">for</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> <span class="token keyword">replace</span><span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'es'</span><span class="token punctuation">,</span> <span class="token string">'tt'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> upper<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> lower<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s3<span class="token punctuation">,</span> trim<span class="token punctuation">(</span>s3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> strcmp<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> strreplace<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"replace"</span><span class="token operator">=</span><span class="token string">"/"</span><span class="token punctuation">,</span> <span class="token string">"limit"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> strreplace<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"replace"</span><span class="token operator">=</span><span class="token string">"/"</span><span class="token punctuation">,</span> <span class="token string">"limit"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span> <span class="token string">"offset"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span> <span class="token string">"reverse"</span><span class="token operator">=</span><span class="token string">"true"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> regexmatch<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">"\d+\.\d+\.\d+\.\d+"</span><span class="token punctuation">,</span> <span class="token string">"group"</span><span class="token operator">=</span><span class="token string">"0"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> regexreplace<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">"192\.168\.0\.(\d+)"</span><span class="token punctuation">,</span> <span class="token string">"replace"</span><span class="token operator">=</span><span class="token string">"cluster-$1"</span><span class="token punctuation">,</span> <span class="token string">"limit"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> regexsplit<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"index"</span><span class="token operator">=</span><span class="token string">"-1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> regexsplit<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"index"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| </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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="数据类型转换函数" tabindex="-1"><a class="header-anchor" href="#数据类型转换函数" aria-hidden="true">#</a> 数据类型转换函数</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Conversion.html" class="">Data Type Conversion Function</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">SELECT</span> cast<span class="token punctuation">(</span>s1 <span class="token keyword">as</span> INT32<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="常序列生成函数" tabindex="-1"><a class="header-anchor" href="#常序列生成函数" aria-hidden="true">#</a> 常序列生成函数</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Constant.html" class="">Constant Timeseries Generating Functions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> const<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'value'</span><span class="token operator">=</span><span class="token string">'1024'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'INT64'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> pi<span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> e<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1<span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="选择函数" tabindex="-1"><a class="header-anchor" href="#选择函数" aria-hidden="true">#</a> 选择函数</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Selection.html" class="">Selector Functions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> s1<span class="token punctuation">,</span> top_k<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> bottom_k<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d2 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">12</span><span class="token operator">-</span><span class="token number">10</span>T20:<span class="token number">36</span>:<span class="token number">15.530</span><span class="token operator">+</span><span class="token number">08</span>:<span class="token number">00</span><span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="区间查询函数" tabindex="-1"><a class="header-anchor" href="#区间查询函数" aria-hidden="true">#</a> 区间查询函数</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Continuous-Interval.html" class="">Continuous Interval Functions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> s1<span class="token punctuation">,</span> zero_count<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> non_zero_count<span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> zero_duration<span class="token punctuation">(</span>s3<span class="token punctuation">)</span><span class="token punctuation">,</span> non_zero_duration<span class="token punctuation">(</span>s4<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d2<span class="token punctuation">;</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h3 id="趋势计算函数" tabindex="-1"><a class="header-anchor" href="#趋势计算函数" aria-hidden="true">#</a> 趋势计算函数</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Variation-Trend.html" class="">Variation Trend Calculation Functions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> s1<span class="token punctuation">,</span> time_difference<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> difference<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> non_negative_difference<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> derivative<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> non_negative_derivative<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">limit</span> <span class="token number">5</span> <span class="token keyword">offset</span> <span class="token number">1000</span><span class="token punctuation">;</span> |
| |
| <span class="token keyword">SELECT</span> DIFF<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> DIFF<span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span> |
| <span class="token keyword">SELECT</span> DIFF<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> DIFF<span class="token punctuation">(</span>s2<span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span> |
| </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="采样函数" tabindex="-1"><a class="header-anchor" href="#采样函数" aria-hidden="true">#</a> 采样函数</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Sample.html" class="">Sample Functions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> equal_size_bucket_random_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> random_sample <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span> |
| <span class="token keyword">select</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'avg'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_avg<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'max'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_max<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span><span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'min'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_min<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'sum'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_sum<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'extreme'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_extreme<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'variance'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_variance <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span> |
| <span class="token keyword">select</span> equal_size_bucket_m4_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> M4_sample <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span> |
| <span class="token keyword">select</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'avg'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_avg_sample<span class="token punctuation">,</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'stendis'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_stendis_sample<span class="token punctuation">,</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'cos'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_cos_sample<span class="token punctuation">,</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'prenextdis'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_prenextdis_sample <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span> |
| |
| <span class="token keyword">select</span> M4<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'timeInterval'</span><span class="token operator">=</span><span class="token string">'25'</span><span class="token punctuation">,</span><span class="token string">'displayWindowBegin'</span><span class="token operator">=</span><span class="token string">'0'</span><span class="token punctuation">,</span><span class="token string">'displayWindowEnd'</span><span class="token operator">=</span><span class="token string">'100'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>vehicle<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> M4<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'windowSize'</span><span class="token operator">=</span><span class="token string">'10'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>vehicle<span class="token punctuation">.</span>d1 |
| </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></div><h3 id="时间序列处理函数" tabindex="-1"><a class="header-anchor" href="#时间序列处理函数" aria-hidden="true">#</a> 时间序列处理函数</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Time-Series.html" class="">Time-Series</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> change_points<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s3<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s4<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s5<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s6<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>testChangePoints<span class="token punctuation">.</span>d1 |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h2 id="数据质量函数库" tabindex="-1"><a class="header-anchor" href="#数据质量函数库" aria-hidden="true">#</a> 数据质量函数库</h2><p>更多见文档<a href="/zh/UserGuide/Master/User-Manual/Operator-and-Expression.html" class="">Operator-and-Expression</a></p><h3 id="数据质量" tabindex="-1"><a class="header-anchor" href="#数据质量" aria-hidden="true">#</a> 数据质量</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Data-Quality.html" class="">Data-Quality</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token comment"># Completeness</span> |
| <span class="token keyword">select</span> completeness<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span> |
| <span class="token keyword">select</span> completeness<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span> |
| |
| <span class="token comment"># Consistency</span> |
| <span class="token keyword">select</span> consistency<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span> |
| <span class="token keyword">select</span> consistency<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span> |
| |
| <span class="token comment"># Timeliness</span> |
| <span class="token keyword">select</span> timeliness<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span> |
| <span class="token keyword">select</span> timeliness<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span> |
| |
| <span class="token comment"># Validity</span> |
| <span class="token keyword">select</span> Validity<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span> |
| <span class="token keyword">select</span> Validity<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span> |
| |
| <span class="token comment"># Accuracy</span> |
| <span class="token keyword">select</span> Accuracy<span class="token punctuation">(</span>t1<span class="token punctuation">,</span>t2<span class="token punctuation">,</span>t3<span class="token punctuation">,</span>m1<span class="token punctuation">,</span>m2<span class="token punctuation">,</span>m3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| </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><h3 id="数据画像" tabindex="-1"><a class="header-anchor" href="#数据画像" aria-hidden="true">#</a> 数据画像</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Data-Profiling.html" class="">Data-Profiling</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token comment"># ACF</span> |
| <span class="token keyword">select</span> acf<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">05</span> |
| |
| <span class="token comment"># Distinct</span> |
| <span class="token keyword">select</span> <span class="token keyword">distinct</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># Histogram</span> |
| <span class="token keyword">select</span> histogram<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"min"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span><span class="token string">"max"</span><span class="token operator">=</span><span class="token string">"20"</span><span class="token punctuation">,</span><span class="token string">"count"</span><span class="token operator">=</span><span class="token string">"10"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># Integral</span> |
| <span class="token keyword">select</span> integral<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">10</span> |
| <span class="token keyword">select</span> integral<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"unit"</span><span class="token operator">=</span><span class="token string">"1m"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">10</span> |
| |
| <span class="token comment"># IntegralAvg</span> |
| <span class="token keyword">select</span> integralavg<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">10</span> |
| |
| <span class="token comment"># Mad</span> |
| <span class="token keyword">select</span> mad<span class="token punctuation">(</span>s0<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| <span class="token keyword">select</span> mad<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.01"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># Median</span> |
| <span class="token keyword">select</span> median<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.01"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># MinMax</span> |
| <span class="token keyword">select</span> minmax<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># Mode</span> |
| <span class="token keyword">select</span> <span class="token keyword">mode</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># MvAvg</span> |
| <span class="token keyword">select</span> mvavg<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># PACF</span> |
| <span class="token keyword">select</span> pacf<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"lag"</span><span class="token operator">=</span><span class="token string">"5"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># Percentile</span> |
| <span class="token keyword">select</span> percentile<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"rank"</span><span class="token operator">=</span><span class="token string">"0.2"</span><span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.01"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># Quantile</span> |
| <span class="token keyword">select</span> quantile<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"rank"</span><span class="token operator">=</span><span class="token string">"0.2"</span><span class="token punctuation">,</span> <span class="token string">"K"</span><span class="token operator">=</span><span class="token string">"800"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># Period</span> |
| <span class="token keyword">select</span> period<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d3 |
| |
| <span class="token comment"># QLB</span> |
| <span class="token keyword">select</span> QLB<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># Resample</span> |
| <span class="token keyword">select</span> resample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'every'</span><span class="token operator">=</span><span class="token string">'5m'</span><span class="token punctuation">,</span><span class="token string">'interp'</span><span class="token operator">=</span><span class="token string">'linear'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> resample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'every'</span><span class="token operator">=</span><span class="token string">'30m'</span><span class="token punctuation">,</span><span class="token string">'aggr'</span><span class="token operator">=</span><span class="token string">'first'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> resample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'every'</span><span class="token operator">=</span><span class="token string">'30m'</span><span class="token punctuation">,</span><span class="token string">'start'</span><span class="token operator">=</span><span class="token string">'2021-03-06 15:00:00'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># Sample</span> |
| <span class="token keyword">select</span> sample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'reservoir'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> sample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'isometric'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># Segment</span> |
| <span class="token keyword">select</span> segment<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># Skew</span> |
| <span class="token keyword">select</span> skew<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># Spline</span> |
| <span class="token keyword">select</span> spline<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"points"</span><span class="token operator">=</span><span class="token string">"151"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># Spread</span> |
| <span class="token keyword">select</span> spread<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span> |
| |
| <span class="token comment"># Stddev</span> |
| <span class="token keyword">select</span> stddev<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># ZScore</span> |
| <span class="token keyword">select</span> zscore<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| </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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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="异常检测" tabindex="-1"><a class="header-anchor" href="#异常检测" aria-hidden="true">#</a> 异常检测</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Anomaly-Detection.html" class="">Anomaly-Detection</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token comment"># IQR</span> |
| <span class="token keyword">select</span> iqr<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># KSigma</span> |
| <span class="token keyword">select</span> ksigma<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"k"</span><span class="token operator">=</span><span class="token string">"1.0"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span> |
| |
| <span class="token comment"># LOF</span> |
| <span class="token keyword">select</span> lof<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span><span class="token operator"><</span><span class="token number">1000</span> |
| <span class="token keyword">select</span> lof<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"method"</span><span class="token operator">=</span><span class="token string">"series"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span><span class="token operator"><</span><span class="token number">1000</span> |
| |
| <span class="token comment"># MissDetect</span> |
| <span class="token keyword">select</span> missdetect<span class="token punctuation">(</span>s2<span class="token punctuation">,</span><span class="token string">'minlen'</span><span class="token operator">=</span><span class="token string">'10'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># Range</span> |
| <span class="token keyword">select</span> range<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"lower_bound"</span><span class="token operator">=</span><span class="token string">"101.0"</span><span class="token punctuation">,</span><span class="token string">"upper_bound"</span><span class="token operator">=</span><span class="token string">"125.0"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span> |
| |
| <span class="token comment"># TwoSidedFilter</span> |
| <span class="token keyword">select</span> TwoSidedFilter<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">'len'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">,</span> <span class="token string">'threshold'</span><span class="token operator">=</span><span class="token string">'0.3'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># Outlier</span> |
| <span class="token keyword">select</span> outlier<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"r"</span><span class="token operator">=</span><span class="token string">"5.0"</span><span class="token punctuation">,</span><span class="token string">"k"</span><span class="token operator">=</span><span class="token string">"4"</span><span class="token punctuation">,</span><span class="token string">"w"</span><span class="token operator">=</span><span class="token string">"10"</span><span class="token punctuation">,</span><span class="token string">"s"</span><span class="token operator">=</span><span class="token string">"5"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># MasterTrain</span> |
| <span class="token keyword">select</span> MasterTrain<span class="token punctuation">(</span>lo<span class="token punctuation">,</span>la<span class="token punctuation">,</span>m_lo<span class="token punctuation">,</span>m_la<span class="token punctuation">,</span><span class="token string">'p'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'eta'</span><span class="token operator">=</span><span class="token string">'1.0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># MasterDetect</span> |
| <span class="token keyword">select</span> MasterDetect<span class="token punctuation">(</span>lo<span class="token punctuation">,</span>la<span class="token punctuation">,</span>m_lo<span class="token punctuation">,</span>m_la<span class="token punctuation">,</span>model<span class="token punctuation">,</span><span class="token string">'output_type'</span><span class="token operator">=</span><span class="token string">'repair'</span><span class="token punctuation">,</span><span class="token string">'p'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'eta'</span><span class="token operator">=</span><span class="token string">'1.0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| <span class="token keyword">select</span> MasterDetect<span class="token punctuation">(</span>lo<span class="token punctuation">,</span>la<span class="token punctuation">,</span>m_lo<span class="token punctuation">,</span>m_la<span class="token punctuation">,</span>model<span class="token punctuation">,</span><span class="token string">'output_type'</span><span class="token operator">=</span><span class="token string">'anomaly'</span><span class="token punctuation">,</span><span class="token string">'p'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'eta'</span><span class="token operator">=</span><span class="token string">'1.0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| </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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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="频域分析" tabindex="-1"><a class="header-anchor" href="#频域分析" aria-hidden="true">#</a> 频域分析</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Frequency-Domain.html" class="">Frequency-Domain</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token comment"># Conv</span> |
| <span class="token keyword">select</span> conv<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># Deconv</span> |
| <span class="token keyword">select</span> deconv<span class="token punctuation">(</span>s3<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| <span class="token keyword">select</span> deconv<span class="token punctuation">(</span>s3<span class="token punctuation">,</span>s2<span class="token punctuation">,</span><span class="token string">'result'</span><span class="token operator">=</span><span class="token string">'remainder'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># DWT</span> |
| <span class="token keyword">select</span> dwt<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"method"</span><span class="token operator">=</span><span class="token string">"haar"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># FFT</span> |
| <span class="token keyword">select</span> fft<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> fft<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'result'</span><span class="token operator">=</span><span class="token string">'real'</span><span class="token punctuation">,</span> <span class="token string">'compress'</span><span class="token operator">=</span><span class="token string">'0.99'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> fft<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'result'</span><span class="token operator">=</span><span class="token string">'imag'</span><span class="token punctuation">,</span><span class="token string">'compress'</span><span class="token operator">=</span><span class="token string">'0.99'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># HighPass</span> |
| <span class="token keyword">select</span> highpass<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'wpass'</span><span class="token operator">=</span><span class="token string">'0.45'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># IFFT</span> |
| <span class="token keyword">select</span> ifft<span class="token punctuation">(</span>re<span class="token punctuation">,</span> im<span class="token punctuation">,</span> <span class="token string">'interval'</span><span class="token operator">=</span><span class="token string">'1m'</span><span class="token punctuation">,</span> <span class="token string">'start'</span><span class="token operator">=</span><span class="token string">'2021-01-01 00:00:00'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># LowPass</span> |
| <span class="token keyword">select</span> lowpass<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'wpass'</span><span class="token operator">=</span><span class="token string">'0.45'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| </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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="数据匹配" tabindex="-1"><a class="header-anchor" href="#数据匹配" aria-hidden="true">#</a> 数据匹配</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Data-Matching.html" class="">Data-Matching</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token comment"># Cov</span> |
| <span class="token keyword">select</span> cov<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># DTW</span> |
| <span class="token keyword">select</span> dtw<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># Pearson</span> |
| <span class="token keyword">select</span> pearson<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># PtnSym</span> |
| <span class="token keyword">select</span> ptnsym<span class="token punctuation">(</span>s4<span class="token punctuation">,</span> <span class="token string">'window'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">,</span> <span class="token string">'threshold'</span><span class="token operator">=</span><span class="token string">'0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># XCorr</span> |
| <span class="token keyword">select</span> xcorr<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">05</span> |
| </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></div><h3 id="数据修复" tabindex="-1"><a class="header-anchor" href="#数据修复" aria-hidden="true">#</a> 数据修复</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Data-Repairing.html" class="">Data-Repairing</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token comment"># TimestampRepair</span> |
| <span class="token keyword">select</span> timestamprepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'interval'</span><span class="token operator">=</span><span class="token string">'10000'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| <span class="token keyword">select</span> timestamprepair<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># ValueFill</span> |
| <span class="token keyword">select</span> valuefill<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| <span class="token keyword">select</span> valuefill<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"method"</span><span class="token operator">=</span><span class="token string">"previous"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># ValueRepair</span> |
| <span class="token keyword">select</span> valuerepair<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| <span class="token keyword">select</span> valuerepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'LsGreedy'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| |
| <span class="token comment"># MasterRepair</span> |
| <span class="token keyword">select</span> MasterRepair<span class="token punctuation">(</span>t1<span class="token punctuation">,</span>t2<span class="token punctuation">,</span>t3<span class="token punctuation">,</span>m1<span class="token punctuation">,</span>m2<span class="token punctuation">,</span>m3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test |
| |
| <span class="token comment"># SeasonalRepair</span> |
| <span class="token keyword">select</span> seasonalrepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'period'</span><span class="token operator">=</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token number">2</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| <span class="token keyword">select</span> seasonalrepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'improved'</span><span class="token punctuation">,</span><span class="token string">'period'</span><span class="token operator">=</span><span class="token number">3</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2 |
| </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><h3 id="序列发现" tabindex="-1"><a class="header-anchor" href="#序列发现" aria-hidden="true">#</a> 序列发现</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Series-Discovery.html" class="">Series-Discovery</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token comment"># ConsecutiveSequences</span> |
| <span class="token keyword">select</span> consecutivesequences<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">,</span><span class="token string">'gap'</span><span class="token operator">=</span><span class="token string">'5m'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| <span class="token keyword">select</span> consecutivesequences<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| |
| <span class="token comment"># ConsecutiveWindows</span> |
| <span class="token keyword">select</span> consecutivewindows<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">,</span><span class="token string">'length'</span><span class="token operator">=</span><span class="token string">'10m'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 |
| </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><h3 id="机器学习" tabindex="-1"><a class="header-anchor" href="#机器学习" aria-hidden="true">#</a> 机器学习</h3><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Machine-Learning.html" class="">Machine-Learning</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token comment"># AR</span> |
| <span class="token keyword">select</span> ar<span class="token punctuation">(</span>s0<span class="token punctuation">,</span><span class="token string">"p"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d0 |
| |
| <span class="token comment"># Representation</span> |
| <span class="token keyword">select</span> representation<span class="token punctuation">(</span>s0<span class="token punctuation">,</span><span class="token string">"tb"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">,</span><span class="token string">"vb"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d0 |
| |
| <span class="token comment"># RM</span> |
| <span class="token keyword">select</span> rm<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> s1<span class="token punctuation">,</span><span class="token string">"tb"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">,</span><span class="token string">"vb"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d0 |
| </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><h2 id="lambda-表达式" tabindex="-1"><a class="header-anchor" href="#lambda-表达式" aria-hidden="true">#</a> Lambda 表达式</h2><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Lambda.html" class="">Lambda</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {x + x}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl1<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {x * 3}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl2<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {x * x}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl3<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {multiply(x, 100)}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl4<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> st<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'(x, y) -> {x + y}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl5<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> st<span class="token punctuation">,</span> str<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'(x, y, z) -> {x + y + z}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl6 <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span><span class="token identifier"><span class="token punctuation">`</span><span class="token punctuation">`</span></span><span class="token punctuation">`</span> |
| </code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h2 id="条件表达式" tabindex="-1"><a class="header-anchor" href="#条件表达式" aria-hidden="true">#</a> 条件表达式</h2><p>更多见文档<a href="/zh/UserGuide/Master/Operators-Functions/Conditional.html" class="">Conditional Expressions</a></p><div class="language-sql line-numbers-mode" data-ext="sql"><pre class="language-sql"><code><span class="token keyword">select</span> T<span class="token punctuation">,</span> P<span class="token punctuation">,</span> <span class="token keyword">case</span> |
| <span class="token keyword">when</span> <span class="token number">1000</span><span class="token operator"><</span>T <span class="token operator">and</span> T<span class="token operator"><</span><span class="token number">1050</span> <span class="token operator">and</span> <span class="token number">1000000</span><span class="token operator"><</span>P <span class="token operator">and</span> P<span class="token operator"><</span><span class="token number">1100000</span> <span class="token keyword">then</span> <span class="token string">"good!"</span> |
| <span class="token keyword">when</span> T<span class="token operator"><=</span><span class="token number">1000</span> <span class="token operator">or</span> T<span class="token operator">>=</span><span class="token number">1050</span> <span class="token keyword">then</span> <span class="token string">"bad temperature"</span> |
| <span class="token keyword">when</span> P<span class="token operator"><=</span><span class="token number">1000000</span> <span class="token operator">or</span> P<span class="token operator">>=</span><span class="token number">1100000</span> <span class="token keyword">then</span> <span class="token string">"bad pressure"</span> |
| <span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>result<span class="token punctuation">`</span></span> |
| <span class="token keyword">from</span> root<span class="token punctuation">.</span>test1 |
| |
| <span class="token keyword">select</span> str<span class="token punctuation">,</span> <span class="token keyword">case</span> |
| <span class="token keyword">when</span> str <span class="token operator">like</span> <span class="token string">"%cc%"</span> <span class="token keyword">then</span> <span class="token string">"has cc"</span> |
| <span class="token keyword">when</span> str <span class="token operator">like</span> <span class="token string">"%dd%"</span> <span class="token keyword">then</span> <span class="token string">"has dd"</span> |
| <span class="token keyword">else</span> <span class="token string">"no cc and dd"</span> <span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>result<span class="token punctuation">`</span></span> |
| <span class="token keyword">from</span> root<span class="token punctuation">.</span>test2 |
| |
| <span class="token keyword">select</span> |
| <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> x<span class="token operator"><=</span><span class="token number">1</span> <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>(-∞,1]<span class="token punctuation">`</span></span><span class="token punctuation">,</span> |
| <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> <span class="token number">1</span><span class="token operator"><</span>x <span class="token operator">and</span> x<span class="token operator"><=</span><span class="token number">3</span> <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>(1,3]<span class="token punctuation">`</span></span><span class="token punctuation">,</span> |
| <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> <span class="token number">3</span><span class="token operator"><</span>x <span class="token operator">and</span> x<span class="token operator"><=</span><span class="token number">7</span> <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>(3,7]<span class="token punctuation">`</span></span><span class="token punctuation">,</span> |
| <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> <span class="token number">7</span><span class="token operator"><</span>x <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>(7,+∞)<span class="token punctuation">`</span></span> |
| <span class="token keyword">from</span> root<span class="token punctuation">.</span>test3 |
| |
| <span class="token keyword">select</span> x<span class="token punctuation">,</span> <span class="token keyword">case</span> x <span class="token keyword">when</span> <span class="token number">1</span> <span class="token keyword">then</span> <span class="token string">"one"</span> <span class="token keyword">when</span> <span class="token number">2</span> <span class="token keyword">then</span> <span class="token string">"two"</span> <span class="token keyword">else</span> <span class="token string">"other"</span> <span class="token keyword">end</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test4 |
| |
| <span class="token keyword">select</span> x<span class="token punctuation">,</span> <span class="token keyword">case</span> x <span class="token keyword">when</span> <span class="token number">1</span> <span class="token keyword">then</span> <span class="token boolean">true</span> <span class="token keyword">when</span> <span class="token number">2</span> <span class="token keyword">then</span> <span class="token boolean">false</span> <span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>result<span class="token punctuation">`</span></span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test4 |
| |
| <span class="token keyword">select</span> x<span class="token punctuation">,</span> <span class="token keyword">case</span> x |
| <span class="token keyword">when</span> <span class="token number">1</span> <span class="token keyword">then</span> <span class="token number">1</span> |
| <span class="token keyword">when</span> <span class="token number">2</span> <span class="token keyword">then</span> <span class="token number">222222222222222</span> |
| <span class="token keyword">when</span> <span class="token number">3</span> <span class="token keyword">then</span> <span class="token number">3.3</span> |
| <span class="token keyword">when</span> <span class="token number">4</span> <span class="token keyword">then</span> <span class="token number">4.4444444444444</span> |
| <span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>result<span class="token punctuation">`</span></span> |
| <span class="token keyword">from</span> root<span class="token punctuation">.</span>test4 |
| </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 class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="触发器" tabindex="-1"><a class="header-anchor" href="#触发器" aria-hidden="true">#</a> 触发器</h2><h3 id="使用-sql-语句注册该触发器" tabindex="-1"><a class="header-anchor" href="#使用-sql-语句注册该触发器" aria-hidden="true">#</a> 使用 SQL 语句注册该触发器</h3><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><h4 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</h4><p>CREATE STATELESS TRIGGER triggerTest</p><p>BEFORE INSERT</p><p>ON <a href="http://root.sg" target="_blank" rel="noopener noreferrer">root.sg<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>.**</p><p>AS 'org.apache.iotdb.trigger.ClusterAlertingExample'</p><p>USING URI '<a href="http://jar/ClusterAlertingExample.jar" target="_blank" rel="noopener noreferrer">http://jar/ClusterAlertingExample.jar<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>'</p><p>WITH (</p><p> "name" = "trigger",</p><p> "limit" = "100"</p><p>)</p><h3 id="卸载触发器" tabindex="-1"><a class="header-anchor" href="#卸载触发器" aria-hidden="true">#</a> 卸载触发器</h3><h4 id="卸载触发器的-sql-语法如下" tabindex="-1"><a class="header-anchor" href="#卸载触发器的-sql-语法如下" aria-hidden="true">#</a> 卸载触发器的 SQL 语法如下：</h4><p>// Drop Trigger</p><p>dropTrigger</p><p>: DROP TRIGGER triggerName=identifier</p><p>;</p><h4 id="示例语句" tabindex="-1"><a class="header-anchor" href="#示例语句" aria-hidden="true">#</a> 示例语句</h4><p>DROP TRIGGER triggerTest1</p><h3 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</h3><p>SHOW TRIGGERS</p><h2 id="连续查询-continuous-query-cq" tabindex="-1"><a class="header-anchor" href="#连续查询-continuous-query-cq" aria-hidden="true">#</a> 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><h2 id="用户自定义函数" tabindex="-1"><a class="header-anchor" href="#用户自定义函数" aria-hidden="true">#</a> 用户自定义函数</h2><h3 id="udfparameters" tabindex="-1"><a class="header-anchor" href="#udfparameters" aria-hidden="true">#</a> UDFParameters</h3><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><h4 id="不指定uri" tabindex="-1"><a class="header-anchor" href="#不指定uri" aria-hidden="true">#</a> 不指定URI</h4><p>CREATE FUNCTION example AS 'org.apache.iotdb.udf.UDTFExample'</p><h4 id="指定uri" tabindex="-1"><a class="header-anchor" href="#指定uri" aria-hidden="true">#</a> 指定URI</h4><p>CREATE FUNCTION example AS 'org.apache.iotdb.udf.UDTFExample' USING URI '<a href="http://jar/example.jar" target="_blank" rel="noopener noreferrer">http://jar/example.jar<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a>'</p><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="权限管理" tabindex="-1"><a class="header-anchor" href="#权限管理" aria-hidden="true">#</a> 权限管理</h2><h3 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</h3><p>CREATE USER <code>ln_write_user</code> 'write_pwd'</p><p>CREATE USER <code>sgcc_write_user</code> 'write_pwd'</p><h3 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</h3><p>LIST USER</p><h3 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</h3><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><h3 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</h3><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><h4 id="tsfile管理" tabindex="-1"><a class="header-anchor" href="#tsfile管理" aria-hidden="true">#</a> TsFile管理</h4><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><h4 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）</h4><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><h4 id="连续查询" tabindex="-1"><a class="header-anchor" href="#连续查询" aria-hidden="true">#</a> 连续查询</h4><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><h4 id="运维命令" tabindex="-1"><a class="header-anchor" href="#运维命令" aria-hidden="true">#</a> 运维命令</h4><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>查询终止</li></ul><p>Eg: IoTDB > KILL QUERY 1</p><h4 id="水印工具" tabindex="-1"><a class="header-anchor" href="#水印工具" aria-hidden="true">#</a> 水印工具</h4><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></div><!----><footer class="page-meta"><div class="meta-item edit-link"><a href="https://github.com/apache/iotdb-docs/edit/main/src/zh/UserGuide/Master/SQL-Manual/SQL-Manual.md" rel="noopener noreferrer" target="_blank" aria-label="发现错误？在 GitHub 上编辑此页" class="nav-link label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->发现错误？在 GitHub 上编辑此页<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="meta-item git-info"><div class="update-time"><span class="label">上次编辑于: </span><!----></div><div class="contributors"><span class="label">贡献者: </span><!--[--><!--[--><span class="contributor" title="email: 105700158+wanghui42@users.noreply.github.com">wanghui42</span><!--]--><!--]--></div></div></footer><!----><!----><!----><!--]--></main><!--]--><footer style="padding-bottom:2rem;"><span id="doc-version" style="display:none;">master</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2023 The Apache Software Foundation.<br> Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>Have a question?</strong> Connect with us on QQ, WeChat, or Slack. <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> now.</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"> We use <a href="https://analytics.google.com">Google Analytics</a> to collect anonymous, aggregated usage information. </p></footer></div><!--]--><!--]--><!----><!--]--></div> |
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