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00180.6 947.289h669.74a134.36 134.36 0 00133.94-133.938V277.595a134.314 134.314 0 00-133.94-133.938zm33.473 267.877H147.126a33.145 33.145 0 01-33.473-33.473c0-18.752 14.72-33.473 33.473-33.473h736.687c18.752 0 33.472 14.72 33.472 33.473a33.145 33.145 0 01-33.472 33.473z"></path></svg><span><!----></span><meta property="datePublished" content="2023-07-10T03:11:17.000Z"></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" name="timer"><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="vp-toc-placeholder"><aside id="toc"><!----><div class="vp-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" name="print"><path d="M819.2 364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button><div class="arrow end"></div></div><div class="vp-toc-wrapper"><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#元数据操作">元数据操作</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_1、数据库管理">1、数据库管理</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_2、时间序列管理">2、时间序列管理</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-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="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_4、设备模板管理">4、设备模板管理</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-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="vp-toc-item"><a class="route-link vp-toc-link level2" href="#写入数据">写入数据</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_1、写入单列数据">1、写入单列数据</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_2、写入多列数据">2、写入多列数据</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-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="vp-toc-item"><a class="route-link vp-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="vp-toc-item"><a class="route-link vp-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="vp-toc-item"><a class="route-link vp-toc-link level2" href="#删除数据">删除数据</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_1、删除单列数据">1、删除单列数据</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_2、删除多列数据">2、删除多列数据</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#数据查询">数据查询</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_1、基础查询">1、基础查询</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_2、选择表达式">2、选择表达式</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_3、查询过滤条件">3、查询过滤条件</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_4、分段分组聚合">4、分段分组聚合</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_5、聚合结果过滤">5、聚合结果过滤</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_6、结果集补空值">6、结果集补空值</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_7、查询结果分页">7、查询结果分页</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_8、排序">8、排序</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_9、查询对齐模式">9、查询对齐模式</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_10、查询写回-select-into">10、查询写回（SELECT INTO）</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#运算符-1">运算符</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#算数运算符">算数运算符</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#比较运算符">比较运算符</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#逻辑运算符">逻辑运算符</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#内置函数">内置函数</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#aggregate-functions">Aggregate Functions</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#算数函数">算数函数</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#比较函数">比较函数</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#字符串处理函数">字符串处理函数</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#数据类型转换函数">数据类型转换函数</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#常序列生成函数">常序列生成函数</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#选择函数">选择函数</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#区间查询函数">区间查询函数</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#趋势计算函数">趋势计算函数</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#采样函数">采样函数</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-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="vp-toc-item"><a class="route-link vp-toc-link level2" href="#数据质量函数库">数据质量函数库</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#数据质量">数据质量</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#数据画像">数据画像</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#异常检测">异常检测</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#频域分析">频域分析</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#数据匹配">数据匹配</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#数据修复">数据修复</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#序列发现">序列发现</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#机器学习">机器学习</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#lambda-表达式">Lambda 表达式</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#条件表达式">条件表达式</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#触发器">触发器</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-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="vp-toc-item"><a class="route-link vp-toc-link level3" href="#卸载触发器">卸载触发器</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#查询触发器">查询触发器</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#连续查询-continuous-query-cq">连续查询（Continuous Query, CQ）</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#语法">语法</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#连续查询的管理">连续查询的管理</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#用户自定义函数">用户自定义函数</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#udfparameters">UDFParameters</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#udf-注册">UDF 注册</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#udf-卸载">UDF 卸载</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#udf-查询">UDF 查询</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-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="vp-toc-item"><a class="route-link vp-toc-link level2" href="#权限管理">权限管理</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_1、创建用户">1、创建用户</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_2、展示用户">2、展示用户</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_3、赋予用户权限">3、赋予用户权限</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_4、撤销用户权限">4、撤销用户权限</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#_5、sql-语句">5、SQL 语句</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-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="vp-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"><span>SQL手册</span></a></h1><h2 id="元数据操作" tabindex="-1"><a class="header-anchor" href="#元数据操作"><span>元数据操作</span></a></h2><h3 id="_1、数据库管理" tabindex="-1"><a class="header-anchor" href="#_1、数据库管理"><span>1、数据库管理</span></a></h3><h4 id="创建数据库" tabindex="-1"><a class="header-anchor" href="#创建数据库"><span>创建数据库</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>ln</span> |
| <span class="line"></span> |
| <span class="line"><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> |
| <span class="line"><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></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="查看数据库" tabindex="-1"><a class="header-anchor" href="#查看数据库"><span>查看数据库</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">show</span> <span class="token keyword">databases</span></span> |
| <span class="line"><span class="token keyword">show</span> <span class="token keyword">databases</span> root<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line"><span class="token keyword">show</span> <span class="token keyword">databases</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="删除数据库" tabindex="-1"><a class="header-anchor" href="#删除数据库"><span>删除数据库</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">DELETE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>ln</span> |
| <span class="line"><span class="token keyword">DELETE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span>sgcc</span> |
| <span class="line"><span class="token keyword">DELETE</span> <span class="token keyword">DATABASE</span> root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="统计数据库数量" tabindex="-1"><a class="header-anchor" href="#统计数据库数量"><span>统计数据库数量</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">count <span class="token keyword">databases</span></span> |
| <span class="line">count <span class="token keyword">databases</span> root<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line">count <span class="token keyword">databases</span> root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line">count <span class="token keyword">databases</span> root<span class="token punctuation">.</span>sgcc</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_2、时间序列管理" tabindex="-1"><a class="header-anchor" href="#_2、时间序列管理"><span>2、时间序列管理</span></a></h3><h4 id="创建时间序列" tabindex="-1"><a class="header-anchor" href="#创建时间序列"><span>创建时间序列</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line"><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>RLE</span> |
| <span class="line"><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span>hardware <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">TEXT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line"><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line"><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>PLAIN</span> |
| <span class="line"><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>sgcc<span class="token punctuation">.</span>wf03<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span>encoding<span class="token operator">=</span>RLE</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>简化版</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">create</span> 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> |
| <span class="line"><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> |
| <span class="line"><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> |
| <span class="line"><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> |
| <span class="line"><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> |
| <span class="line"><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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>错误提示</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span><span class="token keyword">status</span> <span class="token keyword">WITH</span> DATATYPE<span class="token operator">=</span><span class="token keyword">BOOLEAN</span><span class="token punctuation">,</span> ENCODING<span class="token operator">=</span>TS_2DIFF</span> |
| <span class="line"><span class="token operator">></span> error: encoding TS_2DIFF does <span class="token operator">not</span> support <span class="token keyword">BOOLEAN</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="创建对齐时间序列" tabindex="-1"><a class="header-anchor" href="#创建对齐时间序列"><span>创建对齐时间序列</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">CREATE</span> ALIGNED TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>GPS<span class="token punctuation">(</span>latitude <span class="token keyword">FLOAT</span> encoding<span class="token operator">=</span>PLAIN compressor<span class="token operator">=</span>SNAPPY<span class="token punctuation">,</span> longitude <span class="token keyword">FLOAT</span> encoding<span class="token operator">=</span>PLAIN compressor<span class="token operator">=</span>SNAPPY<span class="token punctuation">)</span> </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="删除时间序列" tabindex="-1"><a class="header-anchor" href="#删除时间序列"><span>删除时间序列</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">delete</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span></span> |
| <span class="line"><span class="token keyword">delete</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span>temperature<span class="token punctuation">,</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span>wt02<span class="token punctuation">.</span>hardware</span> |
| <span class="line"><span class="token keyword">delete</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line"><span class="token keyword">drop</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf02<span class="token punctuation">.</span><span class="token operator">*</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="查看时间序列" tabindex="-1"><a class="header-anchor" href="#查看时间序列"><span>查看时间序列</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">SHOW</span> TIMESERIES</span> |
| <span class="line"><span class="token keyword">SHOW</span> TIMESERIES <span class="token operator"><</span>Path<span class="token operator">></span></span> |
| <span class="line"><span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line"><span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line"><span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">limit</span> <span class="token number">10</span> <span class="token keyword">offset</span> <span class="token number">10</span></span> |
| <span class="line"><span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> timeseries <span class="token keyword">contains</span> <span class="token string">'wf01.wt'</span></span> |
| <span class="line"><span class="token keyword">show</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> dataType<span class="token operator">=</span><span class="token keyword">FLOAT</span></span> |
| <span class="line"><span class="token keyword">SHOW</span> LATEST TIMESERIES</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="统计时间序列数量" tabindex="-1"><a class="header-anchor" href="#统计时间序列数量"><span>统计时间序列数量</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token operator">*</span><span class="token punctuation">.</span><span class="token keyword">status</span></span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">.</span><span class="token keyword">status</span></span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TIMESERIES <span class="token keyword">contains</span> <span class="token string">'sgcc'</span> </span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> DATATYPE <span class="token operator">=</span> INT64</span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TAGS<span class="token punctuation">(</span>unit<span class="token punctuation">)</span> <span class="token keyword">contains</span> <span class="token string">'c'</span> </span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TAGS<span class="token punctuation">(</span>unit<span class="token punctuation">)</span> <span class="token operator">=</span> <span class="token string">'c'</span> </span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">WHERE</span> TIMESERIES <span class="token keyword">contains</span> <span class="token string">'sgcc'</span> <span class="token keyword">group</span> <span class="token keyword">by</span> <span class="token keyword">level</span> <span class="token operator">=</span> <span class="token number">1</span></span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">1</span></span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">2</span></span> |
| <span class="line">COUNT TIMESERIES root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span><span class="token operator">*</span> <span class="token keyword">GROUP</span> <span class="token keyword">BY</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">2</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="标签点管理" tabindex="-1"><a class="header-anchor" href="#标签点管理"><span>标签点管理</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">create</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1<span class="token punctuation">(</span>temprature<span class="token punctuation">)</span> <span class="token keyword">with</span> datatype<span class="token operator">=</span><span class="token keyword">FLOAT</span><span class="token punctuation">,</span> encoding<span class="token operator">=</span>RLE<span class="token punctuation">,</span> compression<span class="token operator">=</span>SNAPPY tags<span class="token punctuation">(</span>tag1<span class="token operator">=</span>v1<span class="token punctuation">,</span> tag2<span class="token operator">=</span>v2<span class="token punctuation">)</span> attributes<span class="token punctuation">(</span>attr1<span class="token operator">=</span>v1<span class="token punctuation">,</span> attr2<span class="token operator">=</span>v2<span class="token punctuation">)</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>重命名标签或属性</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">ALTER</span> 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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>重新设置标签或属性的值</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">ALTER</span> 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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>删除已经存在的标签或属性</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">ALTER</span> 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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>添加新的标签</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">ALTER</span> 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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>添加新的属性</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">ALTER</span> 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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>更新插入别名，标签和属性</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">ALTER</span> 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></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>使用标签作为过滤条件查询时间序列</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>返回给定路径下的所有满足条件的时间序列信息：</p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><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> |
| <span class="line"><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></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>使用标签作为过滤条件统计时间序列数量</li></ul><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">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> |
| <span class="line">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></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><p>返回给定路径下的所有满足条件的时间序列的数量：</p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">count timeseries</span> |
| <span class="line">count timeseries root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">where</span> TAGS<span class="token punctuation">(</span>unit<span class="token punctuation">)</span><span class="token operator">=</span><span class="token string">'c'</span></span> |
| <span class="line">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></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>创建对齐时间序列：</p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">create</span> 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></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>支持查询：</p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">show</span> 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></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_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"><span>3、时间序列路径管理</span></a></h3><h4 id="查看路径的所有子路径" tabindex="-1"><a class="header-anchor" href="#查看路径的所有子路径"><span>查看路径的所有子路径</span></a></h4><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"><span>查看路径的所有子节点</span></a></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"><span>查看设备</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> devices</span> |
| <span class="line"></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> devices root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h5 id="查看设备及其-database-信息" tabindex="-1"><a class="header-anchor" href="#查看设备及其-database-信息"><span>查看设备及其 database 信息</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> devices <span class="token keyword">with</span> <span class="token keyword">database</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> devices 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">with</span> <span class="token keyword">database</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="统计节点数" tabindex="-1"><a class="header-anchor" href="#统计节点数"><span>统计节点数</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT NODES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">2</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT NODES 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">LEVEL</span><span class="token operator">=</span><span class="token number">2</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT NODES 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">LEVEL</span><span class="token operator">=</span><span class="token number">3</span></span> |
| <span class="line"></span> |
| <span class="line">IoTDB <span class="token operator">></span> COUNT NODES root<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span><span class="token punctuation">.</span>temperature <span class="token keyword">LEVEL</span><span class="token operator">=</span><span class="token number">3</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="统计设备数量" tabindex="-1"><a class="header-anchor" href="#统计设备数量"><span>统计设备数量</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line">IoTDB<span class="token operator">></span> <span class="token keyword">show</span> devices</span> |
| <span class="line"></span> |
| <span class="line">IoTDB<span class="token operator">></span> count devices</span> |
| <span class="line"></span> |
| <span class="line">IoTDB<span class="token operator">></span> count devices root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_4、设备模板管理" tabindex="-1"><a class="header-anchor" href="#_4、设备模板管理"><span>4、设备模板管理</span></a></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</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"><span>创建元数据模板</span></a></h4><div class="language-Go line-numbers-mode" data-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">CREATE SCHEMA TEMPLATE <templateName> ALIGNED? '(' <measurementId> <attributeClauses> [',' <measurementId> <attributeClauses>]+ ')'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>创建包含两个非对齐序列的元数据模板</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line"></span> |
| <span class="line">IoTDB> create schema template t1 (temperature FLOAT encoding=RLE, status BOOLEAN encoding=PLAIN compression=SNAPPY)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><p>创建包含一组对齐序列的元数据模板</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> create schema template t2 aligned (lat FLOAT encoding=Gorilla, lon FLOAT encoding=Gorilla)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="挂载元数据模板" tabindex="-1"><a class="header-anchor" href="#挂载元数据模板"><span>挂载元数据模板</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> set SCHEMA TEMPLATE t1 to root.sg1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="激活元数据模板" tabindex="-1"><a class="header-anchor" href="#激活元数据模板"><span>激活元数据模板</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> create timeseries using SCHEMA TEMPLATE on root.sg1.d1</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> set SCHEMA TEMPLATE t1 to root.sg1.d1</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> set SCHEMA TEMPLATE t2 to root.sg1.d2</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> create timeseries using schema template on root.sg1.d1</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> create timeseries using schema template on root.sg1.d2</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="查看元数据模板" tabindex="-1"><a class="header-anchor" href="#查看元数据模板"><span>查看元数据模板</span></a></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"><span>解除元数据模板</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> delete timeseries of schema template t1 from root.sg1.d1</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> deactivate schema template t1 from root.sg1.d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>批量处理</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> delete timeseries of schema template t1 from root.sg1.*, root.sg2.*</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> deactivate schema template t1 from root.sg1.*, root.sg2.*</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="卸载元数据模板" tabindex="-1"><a class="header-anchor" href="#卸载元数据模板"><span>卸载元数据模板</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> unset schema template t1 from root.sg1.d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="删除元数据模板" tabindex="-1"><a class="header-anchor" href="#删除元数据模板"><span>删除元数据模板</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> drop schema template t1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_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"><span>5、数据存活时间管理</span></a></h3><h4 id="设置-ttl" tabindex="-1"><a class="header-anchor" href="#设置-ttl"><span>设置 TTL</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> set ttl to root.ln 3600000</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> set ttl to root.sgcc.** 3600000</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> set ttl to root.** 3600000</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="取消-ttl" tabindex="-1"><a class="header-anchor" href="#取消-ttl"><span>取消 TTL</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> unset ttl to root.ln</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> unset ttl to root.sgcc.**</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> unset ttl to root.**</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="显示-ttl" tabindex="-1"><a class="header-anchor" href="#显示-ttl"><span>显示 TTL</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> SHOW ALL TTL</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> SHOW TTL ON StorageGroupNames</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="写入数据" tabindex="-1"><a class="header-anchor" href="#写入数据"><span>写入数据</span></a></h2><h3 id="_1、写入单列数据" tabindex="-1"><a class="header-anchor" href="#_1、写入单列数据"><span>1、写入单列数据</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB > insert into root.ln.wf02.wt02(timestamp,status) values(1,true)</span> |
| <span class="line"></span> |
| <span class="line">IoTDB > insert into root.ln.wf02.wt02(timestamp,hardware) values(1, 'v1'),(2, 'v1')</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_2、写入多列数据" tabindex="-1"><a class="header-anchor" href="#_2、写入多列数据"><span>2、写入多列数据</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB > insert into root.ln.wf02.wt02(timestamp, status, hardware) values (2, false, 'v2')</span> |
| <span class="line"></span> |
| <span class="line">IoTDB > insert into root.ln.wf02.wt02(timestamp, status, hardware) VALUES (3, false, 'v3'),(4, true, 'v4')</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><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"><span>3、使用服务器时间戳</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB > insert into root.ln.wf02.wt02(status, hardware) values (false, 'v2')</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><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"><span>4、写入对齐时间序列数据</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB > create aligned timeseries root.sg1.d1(s1 INT32, s2 DOUBLE)</span> |
| <span class="line"></span> |
| <span class="line">IoTDB > insert into root.sg1.d1(timestamp, s1, s2) aligned values(1, 1, 1)</span> |
| <span class="line"></span> |
| <span class="line">IoTDB > insert into root.sg1.d1(timestamp, s1, s2) aligned values(2, 2, 2), (3, 3, 3)</span> |
| <span class="line"></span> |
| <span class="line">IoTDB > select * from root.sg1.d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><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"><span>5、加载 TsFile 文件数据</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">load '<path/dir>' [sglevel=int][verify=true/false][onSuccess=delete/none]</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="通过指定文件路径-绝对路径-加载单-tsfile-文件" tabindex="-1"><a class="header-anchor" href="#通过指定文件路径-绝对路径-加载单-tsfile-文件"><span>通过指定文件路径(绝对路径)加载单 tsfile 文件</span></a></h4><ul><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile'</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' 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"><span>通过指定文件夹路径(绝对路径)批量加载文件</span></a></h4><ul><li><code>load '/Users/Desktop/data'</code></li><li><code>load '/Users/Desktop/data' 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"><span>删除数据</span></a></h2><h3 id="_1、删除单列数据" tabindex="-1"><a class="header-anchor" href="#_1、删除单列数据"><span>1、删除单列数据</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">delete from root.ln.wf02.wt02.status where time<=2017-11-01T16:26:00;</span> |
| <span class="line"></span> |
| <span class="line">delete from root.ln.wf02.wt02.status where time>=2017-01-01T00:00:00 and time<=2017-11-01T16:26:00;</span> |
| <span class="line"></span> |
| <span class="line">delete from root.ln.wf02.wt02.status where time < 10</span> |
| <span class="line"></span> |
| <span class="line">delete from root.ln.wf02.wt02.status where time <= 10</span> |
| <span class="line"></span> |
| <span class="line">delete from root.ln.wf02.wt02.status where time < 20 and time > 10</span> |
| <span class="line"></span> |
| <span class="line">delete from root.ln.wf02.wt02.status where time <= 20 and time >= 10</span> |
| <span class="line"></span> |
| <span class="line">delete from root.ln.wf02.wt02.status where time > 20</span> |
| <span class="line"></span> |
| <span class="line">delete from root.ln.wf02.wt02.status where time >= 20</span> |
| <span class="line"></span> |
| <span class="line">delete from root.ln.wf02.wt02.status where time = 20</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>出错：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">delete from root.ln.wf02.wt02.status where time > 4 or time < 0</span> |
| <span class="line"></span> |
| <span class="line">Msg: 303: Check metadata error: For delete statement, where clause can only contain atomic</span> |
| <span class="line"></span> |
| <span class="line">expressions like : time > XXX, time <= XXX, or two atomic expressions connected by 'AND'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>删除时间序列中的所有数据：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">delete from root.ln.wf02.wt02.status</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_2、删除多列数据" tabindex="-1"><a class="header-anchor" href="#_2、删除多列数据"><span>2、删除多列数据</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">delete from root.ln.wf02.wt02.* where time <= 2017-11-01T16:26:00;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>声明式的编程方式：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> delete from root.ln.wf03.wt02.status where time < now()</span> |
| <span class="line"></span> |
| <span class="line">Msg: The statement is executed successfully.</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="数据查询" tabindex="-1"><a class="header-anchor" href="#数据查询"><span>数据查询</span></a></h2><h3 id="_1、基础查询" tabindex="-1"><a class="header-anchor" href="#_1、基础查询"><span>1、基础查询</span></a></h3><h4 id="时间过滤查询" tabindex="-1"><a class="header-anchor" href="#时间过滤查询"><span>时间过滤查询</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select temperature from root.ln.wf01.wt01 where time < 2017-11-01T00:08:00.000</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="根据一个时间区间选择多列数据" tabindex="-1"><a class="header-anchor" href="#根据一个时间区间选择多列数据"><span>根据一个时间区间选择多列数据</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select status, temperature from root.ln.wf01.wt01 where time > 2017-11-01T00:05:00.000 and time < 2017-11-01T00:12:00.000;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="按照多个时间区间选择同一设备的多列数据" tabindex="-1"><a class="header-anchor" href="#按照多个时间区间选择同一设备的多列数据"><span>按照多个时间区间选择同一设备的多列数据</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="按照多个时间区间选择不同设备的多列数据" tabindex="-1"><a class="header-anchor" href="#按照多个时间区间选择不同设备的多列数据"><span>按照多个时间区间选择不同设备的多列数据</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="根据时间降序返回结果集" tabindex="-1"><a class="header-anchor" href="#根据时间降序返回结果集"><span>根据时间降序返回结果集</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select * from root.ln.** where time > 1 order by time desc limit 10;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_2、选择表达式" tabindex="-1"><a class="header-anchor" href="#_2、选择表达式"><span>2、选择表达式</span></a></h3><h4 id="使用别名" tabindex="-1"><a class="header-anchor" href="#使用别名"><span>使用别名</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select s1 as temperature, s2 as speed from root.ln.wf01.wt01;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="运算符" tabindex="-1"><a class="header-anchor" href="#运算符"><span>运算符</span></a></h4><h4 id="函数" tabindex="-1"><a class="header-anchor" href="#函数"><span>函数</span></a></h4><p>不支持：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select s1, count(s1) from root.sg.d1;</span> |
| <span class="line"></span> |
| <span class="line">select sin(s1), count(s1) from root.sg.d1;</span> |
| <span class="line"></span> |
| <span class="line">select s1, count(s1) from root.sg.d1 group by ([10,100),10ms);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h5 id="时间序列查询嵌套表达式" tabindex="-1"><a class="header-anchor" href="#时间序列查询嵌套表达式"><span>时间序列查询嵌套表达式</span></a></h5><p>示例 1：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select a,</span> |
| <span class="line"></span> |
| <span class="line"> b,</span> |
| <span class="line"></span> |
| <span class="line"> ((a + 1) * 2 - 1) % 2 + 1.5,</span> |
| <span class="line"></span> |
| <span class="line"> sin(a + sin(a + sin(b))),</span> |
| <span class="line"></span> |
| <span class="line"> -(a + b) * (sin(a + b) * sin(a + b) + cos(a + b) * cos(a + b)) + 1</span> |
| <span class="line"></span> |
| <span class="line">from root.sg1;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>示例 2：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select (a + b) * 2 + sin(a) from root.sg</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>示例 3：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select (a + *) / 2 from root.sg1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>示例 4：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select (a + b) * 3 from root.sg, root.ln</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="聚合查询嵌套表达式" tabindex="-1"><a class="header-anchor" href="#聚合查询嵌套表达式"><span>聚合查询嵌套表达式</span></a></h5><p>示例 1：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select avg(temperature),</span> |
| <span class="line"></span> |
| <span class="line"> sin(avg(temperature)),</span> |
| <span class="line"></span> |
| <span class="line"> avg(temperature) + 1,</span> |
| <span class="line"></span> |
| <span class="line"> -sum(hardware),</span> |
| <span class="line"></span> |
| <span class="line"> avg(temperature) + sum(hardware)</span> |
| <span class="line"></span> |
| <span class="line">from root.ln.wf01.wt01;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>示例 2：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select avg(*), </span> |
| <span class="line"></span> |
| <span class="line"> (avg(*) + 1) * 3 / 2 -1 </span> |
| <span class="line"></span> |
| <span class="line">from root.sg1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>示例 3：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select avg(temperature),</span> |
| <span class="line"></span> |
| <span class="line"> sin(avg(temperature)),</span> |
| <span class="line"></span> |
| <span class="line"> avg(temperature) + 1,</span> |
| <span class="line"></span> |
| <span class="line"> -sum(hardware),</span> |
| <span class="line"></span> |
| <span class="line"> avg(temperature) + sum(hardware) as custom_sum</span> |
| <span class="line"></span> |
| <span class="line">from root.ln.wf01.wt01</span> |
| <span class="line"></span> |
| <span class="line">GROUP BY([10, 90), 10ms);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="最新点查询" tabindex="-1"><a class="header-anchor" href="#最新点查询"><span>最新点查询</span></a></h4><p>SQL 语法：</p><div class="language-Go line-numbers-mode" data-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">select last <Path> [COMMA <Path>]* from < PrefixPath > [COMMA < PrefixPath >]* <whereClause> [ORDER BY TIMESERIES (DESC | ASC)?]</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 root.ln.wf01.wt01.status 的最新数据点</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> select last status from root.ln.wf01.wt01</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 root.ln.wf01.wt01 下 status，temperature 时间戳大于等于 2017-11-07T23:50:00 的最新数据点</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> select last status, temperature from root.ln.wf01.wt01 where time >= 2017-11-07T23:50:00</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 root.ln.wf01.wt01 下所有序列的最新数据点，并按照序列名降序排列</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> select last * from root.ln.wf01.wt01 order by timeseries desc;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_3、查询过滤条件" tabindex="-1"><a class="header-anchor" href="#_3、查询过滤条件"><span>3、查询过滤条件</span></a></h3><h4 id="时间过滤条件" tabindex="-1"><a class="header-anchor" href="#时间过滤条件"><span>时间过滤条件</span></a></h4><p>选择时间戳大于 2022-01-01T00:05:00.000 的数据：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select s1 from root.sg1.d1 where time > 2022-01-01T00:05:00.000;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择时间戳等于 2022-01-01T00:05:00.000 的数据：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select s1 from root.sg1.d1 where time = 2022-01-01T00:05:00.000;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择时间区间 [2017-11-01T00:05:00.000, 2017-11-01T00:12:00.000) 内的数据：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select s1 from root.sg1.d1 where time >= 2022-01-01T00:05:00.000 and time < 2017-11-01T00:12:00.000;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="值过滤条件" tabindex="-1"><a class="header-anchor" href="#值过滤条件"><span>值过滤条件</span></a></h4><p>选择值大于 36.5 的数据：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select temperature from root.sg1.d1 where temperature > 36.5;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择值等于 true 的数据：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select status from root.sg1.d1 where status = true;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择区间 [36.5,40] 内或之外的数据：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select temperature from root.sg1.d1 where temperature between 36.5 and 40;</span> |
| <span class="line"></span> |
| <span class="line">select temperature from root.sg1.d1 where temperature not between 36.5 and 40;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>选择值在特定范围内的数据：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select code from root.sg1.d1 where code in ('200', '300', '400', '500');</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择值在特定范围外的数据：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select code from root.sg1.d1 where code not in ('200', '300', '400', '500');</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择值为空的数据:</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select code from root.sg1.d1 where temperature is null;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>选择值为非空的数据:</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select code from root.sg1.d1 where temperature is not null;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="模糊查询" tabindex="-1"><a class="header-anchor" href="#模糊查询"><span>模糊查询</span></a></h4><p>查询 <code>root.sg.d1</code> 下 <code>value</code> 含有<code>'cc'</code>的数据</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> select * from root.sg.d1 where value like '%cc%'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 <code>root.sg.d1</code> 下 <code>value</code> 中间为 <code>'b'</code>、前后为任意单个字符的数据</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> select * from root.sg.device where value like '_b_'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> select * from root.sg.d1 where value regexp '^[A-Za-z]+$'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询 root.sg.d1 下 value 值为26个小写英文字符组成的字符串且时间大于100的</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">IoTDB> select * from root.sg.d1 where value regexp '^[a-z]+$' and time > 100</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_4、分段分组聚合" tabindex="-1"><a class="header-anchor" href="#_4、分段分组聚合"><span>4、分段分组聚合</span></a></h3><h4 id="未指定滑动步长的时间区间分组聚合查询" tabindex="-1"><a class="header-anchor" href="#未指定滑动步长的时间区间分组聚合查询"><span>未指定滑动步长的时间区间分组聚合查询</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select count(status), max_value(temperature) from root.ln.wf01.wt01 group by ([2017-11-01T00:00:00, 2017-11-07T23:00:00),1d);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="指定滑动步长的时间区间分组聚合查询" tabindex="-1"><a class="header-anchor" href="#指定滑动步长的时间区间分组聚合查询"><span>指定滑动步长的时间区间分组聚合查询</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>滑动步长可以小于聚合窗口</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="按照自然月份的时间区间分组聚合查询" tabindex="-1"><a class="header-anchor" href="#按照自然月份的时间区间分组聚合查询"><span>按照自然月份的时间区间分组聚合查询</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>每个时间间隔窗口内都有数据</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select count(status) from root.ln.wf01.wt01 group by([2017-10-31T00:00:00, 2019-11-07T23:00:00), 1mo, 2mo);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="左开右闭区间" tabindex="-1"><a class="header-anchor" href="#左开右闭区间"><span>左开右闭区间</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select count(status) from root.ln.wf01.wt01 group by ((2017-11-01T00:00:00, 2017-11-07T23:00:00],1d);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="与分组聚合混合使用" tabindex="-1"><a class="header-anchor" href="#与分组聚合混合使用"><span>与分组聚合混合使用</span></a></h4><p>统计降采样后的数据点个数</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select count(status) from root.ln.wf01.wt01 group by ((2017-11-01T00:00:00, 2017-11-07T23:00:00],1d), level=1;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>加上滑动 Step 的降采样后的结果也可以汇总</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="路径层级分组聚合" tabindex="-1"><a class="header-anchor" href="#路径层级分组聚合"><span>路径层级分组聚合</span></a></h4><p>统计不同 database 下 status 序列的数据点个数</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select count(status) from root.** group by level = 1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>统计不同设备下 status 序列的数据点个数</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select count(status) from root.** group by level = 3</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>统计不同 database 下的不同设备中 status 序列的数据点个数</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select count(status) from root.** group by level = 1, 3</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询所有序列下温度传感器 temperature 的最大值</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select max_value(temperature) from root.** group by level = 0</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询某一层级下所有传感器拥有的总数据点数</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select count(*) from root.ln.** group by level = 2</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="标签分组聚合" tabindex="-1"><a class="header-anchor" href="#标签分组聚合"><span>标签分组聚合</span></a></h4><h5 id="单标签聚合查询" tabindex="-1"><a class="header-anchor" href="#单标签聚合查询"><span>单标签聚合查询</span></a></h5><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">SELECT AVG(temperature) FROM root.factory1.** GROUP BY TAGS(city);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="多标签聚合查询" tabindex="-1"><a class="header-anchor" href="#多标签聚合查询"><span>多标签聚合查询</span></a></h5><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">SELECT avg(temperature) FROM root.factory1.** GROUP BY TAGS(city, workshop);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="基于时间区间的标签聚合查询" tabindex="-1"><a class="header-anchor" href="#基于时间区间的标签聚合查询"><span>基于时间区间的标签聚合查询</span></a></h5><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">SELECT AVG(temperature) FROM root.factory1.** GROUP BY ([1000, 10000), 5s), TAGS(city, workshop);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="差值分段聚合" tabindex="-1"><a class="header-anchor" href="#差值分段聚合"><span>差值分段聚合</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">group by variation(controlExpression[,delta][,ignoreNull=true/false])</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="delta-0时的等值事件分段" tabindex="-1"><a class="header-anchor" href="#delta-0时的等值事件分段"><span>delta=0时的等值事件分段</span></a></h5><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select __endTime, avg(s1), count(s2), sum(s3) from root.sg.d group by variation(s6)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>指定ignoreNull为false</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select __endTime, avg(s1), count(s2), sum(s3) from root.sg.d group by variation(s6, ignoreNull=false)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="delta-0时的差值事件分段" tabindex="-1"><a class="header-anchor" href="#delta-0时的差值事件分段"><span>delta!=0时的差值事件分段</span></a></h5><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select __endTime, avg(s1), count(s2), sum(s3) from root.sg.d group by variation(s6, 4)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="条件分段聚合" tabindex="-1"><a class="header-anchor" href="#条件分段聚合"><span>条件分段聚合</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">group by condition(predict,[keep>/>=/=/<=/<]threshold,[,ignoreNull=true/false])</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>查询至少连续两行以上的charging_status=1的数据</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select max_time(charging_status),count(vehicle_status),last_value(soc) from root.** group by condition(charging_status=1,KEEP>=2,ignoreNull=true)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>当设置<code>ignoreNull</code>为false时，遇到null值为将其视为一个不满足条件的行，得到结果原先的分组被含null的行拆分</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select max_time(charging_status),count(vehicle_status),last_value(soc) from root.** group by condition(charging_status=1,KEEP>=2,ignoreNull=false)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="会话分段聚合" tabindex="-1"><a class="header-anchor" href="#会话分段聚合"><span>会话分段聚合</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">group by session(timeInterval)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>按照不同的时间单位设定时间间隔</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select __endTime,count(*) from root.** group by session(1d)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>和<code>HAVING</code>、<code>ALIGN BY DEVICE</code>共同使用</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select __endTime,sum(hardware) from root.ln.wf02.wt01 group by session(50s) having sum(hardware)>0 align by device</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="点数分段聚合" tabindex="-1"><a class="header-anchor" href="#点数分段聚合"><span>点数分段聚合</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">group by count(controlExpression, size[,ignoreNull=true/false])</span> |
| <span class="line"></span> |
| <span class="line">select count(charging_stauts), first_value(soc) from root.sg group by count(charging_status,5) </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>当使用ignoreNull将null值也考虑进来</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select count(charging_stauts), first_value(soc) from root.sg group by count(charging_status,5,ignoreNull=false) </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_5、聚合结果过滤" tabindex="-1"><a class="header-anchor" href="#_5、聚合结果过滤"><span>5、聚合结果过滤</span></a></h3><p>不正确的：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select count(s1) from root.** group by ([1,3),1ms) having sum(s1) > s1</span> |
| <span class="line"></span> |
| <span class="line">select count(s1) from root.** group by ([1,3),1ms) having s1 > 1</span> |
| <span class="line"></span> |
| <span class="line">select count(s1) from root.** group by ([1,3),1ms), level=1 having sum(d1.s1) > 1</span> |
| <span class="line"></span> |
| <span class="line">select count(d1.s1) from root.** group by ([1,3),1ms), level=1 having sum(s1) > 1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>SQL 示例：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line"> select count(s1) from root.** group by ([1,11),2ms), level=1 having count(s2) > 2;</span> |
| <span class="line"></span> |
| <span class="line"> select count(s1), count(s2) from root.** group by ([1,11),2ms) having count(s2) > 1 align by device;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_6、结果集补空值" tabindex="-1"><a class="header-anchor" href="#_6、结果集补空值"><span>6、结果集补空值</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">FILL '(' PREVIOUS | LINEAR | constant ')'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="previous-填充" tabindex="-1"><a class="header-anchor" href="#previous-填充"><span><code>PREVIOUS</code> 填充</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="linear-填充" tabindex="-1"><a class="header-anchor" href="#linear-填充"><span><code>LINEAR</code> 填充</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="常量填充" tabindex="-1"><a class="header-anchor" href="#常量填充"><span>常量填充</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>使用 <code>BOOLEAN</code> 类型的常量填充</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_7、查询结果分页" tabindex="-1"><a class="header-anchor" href="#_7、查询结果分页"><span>7、查询结果分页</span></a></h3><h4 id="按行分页" tabindex="-1"><a class="header-anchor" href="#按行分页"><span>按行分页</span></a></h4><p>基本的 <code>LIMIT</code> 子句</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select status, temperature from root.ln.wf01.wt01 limit 10</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>带 <code>OFFSET</code> 的 <code>LIMIT</code> 子句</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select status, temperature from root.ln.wf01.wt01 limit 5 offset 3</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p><code>LIMIT</code> 子句与 <code>WHERE</code> 子句结合</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p><code>LIMIT</code> 子句与 <code>GROUP BY</code> 子句组合</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="按列分页" tabindex="-1"><a class="header-anchor" href="#按列分页"><span>按列分页</span></a></h4><p>基本的 <code>SLIMIT</code> 子句</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select * from root.ln.wf01.wt01 where time > 2017-11-01T00:05:00.000 and time < 2017-11-01T00:12:00.000 slimit 1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>带 <code>SOFFSET</code> 的 <code>SLIMIT</code> 子句</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p><code>SLIMIT</code> 子句与 <code>GROUP BY</code> 子句结合</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p><code>SLIMIT</code> 子句与 <code>LIMIT</code> 子句结合</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select * from root.ln.wf01.wt01 limit 10 offset 100 slimit 2 soffset 0</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_8、排序" tabindex="-1"><a class="header-anchor" href="#_8、排序"><span>8、排序</span></a></h3><p>时间对齐模式下的排序</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select * from root.ln.** where time <= 2017-11-01T00:01:00 order by time desc;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>设备对齐模式下的排序</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select * from root.ln.** where time <= 2017-11-01T00:01:00 order by device desc,time asc align by device;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>在时间戳相等时按照设备名排序</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select * from root.ln.** where time <= 2017-11-01T00:01:00 order by time asc,device desc align by device;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>没有显式指定时</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select * from root.ln.** where time <= 2017-11-01T00:01:00 align by device;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>对聚合后的结果进行排序</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_9、查询对齐模式" tabindex="-1"><a class="header-anchor" href="#_9、查询对齐模式"><span>9、查询对齐模式</span></a></h3><h4 id="按设备对齐" tabindex="-1"><a class="header-anchor" href="#按设备对齐"><span>按设备对齐</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select * from root.ln.** where time <= 2017-11-01T00:01:00 align by device;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_10、查询写回-select-into" tabindex="-1"><a class="header-anchor" href="#_10、查询写回-select-into"><span>10、查询写回（SELECT INTO）</span></a></h3><h4 id="整体描述" tabindex="-1"><a class="header-anchor" href="#整体描述"><span>整体描述</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">selectIntoStatement</span> |
| <span class="line"></span> |
| <span class="line"> : SELECT</span> |
| <span class="line"></span> |
| <span class="line"> resultColumn [, resultColumn] ...</span> |
| <span class="line"></span> |
| <span class="line"> INTO intoItem [, intoItem] ...</span> |
| <span class="line"></span> |
| <span class="line"> FROM prefixPath [, prefixPath] ...</span> |
| <span class="line"></span> |
| <span class="line"> [WHERE whereCondition]</span> |
| <span class="line"></span> |
| <span class="line"> [GROUP BY groupByTimeClause, groupByLevelClause]</span> |
| <span class="line"></span> |
| <span class="line"> [FILL {PREVIOUS | LINEAR | constant}]</span> |
| <span class="line"></span> |
| <span class="line"> [LIMIT rowLimit OFFSET rowOffset]</span> |
| <span class="line"></span> |
| <span class="line"> [ALIGN BY DEVICE]</span> |
| <span class="line"></span> |
| <span class="line"> ;</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">intoItem</span> |
| <span class="line"></span> |
| <span class="line"> : [ALIGNED] intoDevicePath '(' intoMeasurementName [',' intoMeasurementName]* ')'</span> |
| <span class="line"></span> |
| <span class="line"> ;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>按时间对齐，将 <code>root.sg</code> database 下四条序列的查询结果写入到 <code>root.sg_copy</code> database 下指定的四条序列中</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>按时间对齐，将聚合查询的结果存储到指定序列中</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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);</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>按设备对齐</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>按设备对齐，将表达式计算的结果存储到指定序列中</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">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;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="使用变量占位符" tabindex="-1"><a class="header-anchor" href="#使用变量占位符"><span>使用变量占位符</span></a></h4><h5 id="按时间对齐-默认" tabindex="-1"><a class="header-anchor" href="#按时间对齐-默认"><span>按时间对齐（默认）</span></a></h5><h6 id="_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"><span>（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</span></a></h6><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line"></span> |
| <span class="line">select s1, s2</span> |
| <span class="line"></span> |
| <span class="line">into root.sg_copy.d1(::), root.sg_copy.d2(s1), root.sg_copy.d1(${3}), root.sg_copy.d2(::)</span> |
| <span class="line"></span> |
| <span class="line">from root.sg.d1, root.sg.d2;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>该语句等价于：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line"></span> |
| <span class="line">select s1, s2</span> |
| <span class="line"></span> |
| <span class="line">into root.sg_copy.d1(s1), root.sg_copy.d2(s1), root.sg_copy.d1(s2), root.sg_copy.d2(s2)</span> |
| <span class="line"></span> |
| <span class="line">from root.sg.d1, root.sg.d2;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h6 id="_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符" tabindex="-1"><a class="header-anchor" href="#_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符"><span>（2）目标设备使用变量占位符 & 目标物理量列表不使用变量占位符</span></a></h6><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select d1.s1, d1.s2, d2.s3, d3.s4 </span> |
| <span class="line"></span> |
| <span class="line">into ::(s1_1, s2_2), root.sg.d2_2(s3_3), root.${2}_copy.::(s4)</span> |
| <span class="line"></span> |
| <span class="line">from root.sg;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div 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"><span>（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</span></a></h6><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">select * into root.sg_bk.::(::) from root.sg.**;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h5 id="按设备对齐-使用-align-by-device" tabindex="-1"><a class="header-anchor" href="#按设备对齐-使用-align-by-device"><span>按设备对齐（使用 <code>ALIGN BY DEVICE</code>）</span></a></h5><h6 id="_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"><span>（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</span></a></h6><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line"></span> |
| <span class="line">select s1, s2, s3, s4</span> |
| <span class="line"></span> |
| <span class="line">into root.backup_sg.d1(s1, s2, s3, s4), root.backup_sg.d2(::), root.sg.d3(backup_${4})</span> |
| <span class="line"></span> |
| <span class="line">from root.sg.d1, root.sg.d2, root.sg.d3</span> |
| <span class="line"></span> |
| <span class="line">align by device;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h6 id="_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符-1" tabindex="-1"><a class="header-anchor" href="#_2-目标设备使用变量占位符-目标物理量列表不使用变量占位符-1"><span>（2）目标设备使用变量占位符 & 目标物理量列表不使用变量占位符</span></a></h6><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line"></span> |
| <span class="line">select avg(s1), sum(s2) + sum(s3), count(s4)</span> |
| <span class="line"></span> |
| <span class="line">into root.agg_${2}.::(avg_s1, sum_s2_add_s3, count_s4)</span> |
| <span class="line"></span> |
| <span class="line">from root.**</span> |
| <span class="line"></span> |
| <span class="line">align by device;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></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"><span>（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</span></a></h6><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line"></span> |
| <span class="line">select * into ::(backup_${4}) from root.sg.** align by device;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="指定目标序列为对齐序列" tabindex="-1"><a class="header-anchor" href="#指定目标序列为对齐序列"><span>指定目标序列为对齐序列</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line"></span> |
| <span class="line">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;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="运算符-1" tabindex="-1"><a class="header-anchor" href="#运算符-1"><span>运算符</span></a></h2><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Operator-and-Expression</a></p><h3 id="算数运算符" tabindex="-1"><a class="header-anchor" href="#算数运算符"><span>算数运算符</span></a></h3><p>更多见文档 <a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Arithmetic Operators and Functions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> <span class="token operator">-</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> <span class="token operator">+</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">+</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">-</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">*</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">/</span> s2<span class="token punctuation">,</span> s1 <span class="token operator">%</span> s2 <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="比较运算符" tabindex="-1"><a class="header-anchor" href="#比较运算符"><span>比较运算符</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Comparison Operators and Functions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># Basic comparison operators</span></span> |
| <span class="line"><span class="token keyword">select</span> a<span class="token punctuation">,</span> b<span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span><span class="token punctuation">,</span> a <span class="token operator"><=</span> b<span class="token punctuation">,</span> <span class="token operator">!</span><span class="token punctuation">(</span>a <span class="token operator"><=</span> b<span class="token punctuation">)</span><span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span> <span class="token operator">&&</span> a <span class="token operator">></span> b <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># `BETWEEN ... AND ...` operator</span></span> |
| <span class="line"><span class="token keyword">select</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">between</span> <span class="token number">36.5</span> <span class="token operator">and</span> <span class="token number">40</span><span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> temperature <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">not</span> <span class="token operator">between</span> <span class="token number">36.5</span> <span class="token operator">and</span> <span class="token number">40</span><span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Fuzzy matching operator: Use `Like` for fuzzy matching</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">like</span> <span class="token string">'%cc%'</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>device <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">like</span> <span class="token string">'_b_'</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Fuzzy matching operator: Use `Regexp` for fuzzy matching</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">regexp</span> <span class="token string">'^[A-Za-z]+$'</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token operator">*</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">value</span> <span class="token operator">regexp</span> <span class="token string">'^[a-z]+$'</span> <span class="token operator">and</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">100</span></span> |
| <span class="line"><span class="token keyword">select</span> b<span class="token punctuation">,</span> b <span class="token operator">like</span> <span class="token string">'1%'</span><span class="token punctuation">,</span> b <span class="token operator">regexp</span> <span class="token string">'[0-2]'</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># `IS NULL` operator</span></span> |
| <span class="line"><span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">is</span> <span class="token boolean">null</span><span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> temperature <span class="token operator">is</span> <span class="token operator">not</span> <span class="token boolean">null</span><span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># `IN` operator</span></span> |
| <span class="line"><span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> code <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token string">'200'</span><span class="token punctuation">,</span> <span class="token string">'300'</span><span class="token punctuation">,</span> <span class="token string">'400'</span><span class="token punctuation">,</span> <span class="token string">'500'</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> code <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> code <span class="token operator">not</span> <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token string">'200'</span><span class="token punctuation">,</span> <span class="token string">'300'</span><span class="token punctuation">,</span> <span class="token string">'400'</span><span class="token punctuation">,</span> <span class="token string">'500'</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> a<span class="token punctuation">,</span> a <span class="token operator">in</span> <span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="逻辑运算符" tabindex="-1"><a class="header-anchor" href="#逻辑运算符"><span>逻辑运算符</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Logical Operators</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> a<span class="token punctuation">,</span> b<span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span><span class="token punctuation">,</span> a <span class="token operator"><=</span> b<span class="token punctuation">,</span> <span class="token operator">!</span><span class="token punctuation">(</span>a <span class="token operator"><=</span> b<span class="token punctuation">)</span><span class="token punctuation">,</span> a <span class="token operator">></span> <span class="token number">10</span> <span class="token operator">&&</span> a <span class="token operator">></span> b <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="内置函数" tabindex="-1"><a class="header-anchor" href="#内置函数"><span>内置函数</span></a></h2><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Operator-and-Expression</a></p><h3 id="aggregate-functions" tabindex="-1"><a class="header-anchor" href="#aggregate-functions"><span>Aggregate Functions</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Aggregate Functions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> <span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">status</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">0</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">,</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">1</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>db<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">0</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> count_if<span class="token punctuation">(</span>s1<span class="token operator">=</span><span class="token number">1</span> <span class="token operator">&</span> s2<span class="token operator">=</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>db<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> time_duration<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>db<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="算数函数" tabindex="-1"><a class="header-anchor" href="#算数函数"><span>算数函数</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Arithmetic Operators and Functions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> sin<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> cos<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> tan<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">limit</span> <span class="token number">5</span> <span class="token keyword">offset</span> <span class="token number">1000</span><span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> s4<span class="token punctuation">,</span><span class="token function">round</span><span class="token punctuation">(</span>s4<span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token function">round</span><span class="token punctuation">(</span>s4<span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">,</span><span class="token function">round</span><span class="token punctuation">(</span>s4<span class="token punctuation">,</span><span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="比较函数" tabindex="-1"><a class="header-anchor" href="#比较函数"><span>比较函数</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Comparison Operators and Functions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> ts<span class="token punctuation">,</span> on_off<span class="token punctuation">(</span>ts<span class="token punctuation">,</span> <span class="token string">'threshold'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> ts<span class="token punctuation">,</span> in_range<span class="token punctuation">(</span>ts<span class="token punctuation">,</span> <span class="token string">'lower'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">,</span> <span class="token string">'upper'</span><span class="token operator">=</span><span class="token string">'3.1'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="字符串处理函数" tabindex="-1"><a class="header-anchor" href="#字符串处理函数"><span>字符串处理函数</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">String Processing</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> string_contains<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'s'</span><span class="token operator">=</span><span class="token string">'warn'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d4<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> string_matches<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'regex'</span><span class="token operator">=</span><span class="token string">'[^\\s]+37229'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d4<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> length<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> locate<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> locate<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span> <span class="token string">"reverse"</span><span class="token operator">=</span><span class="token string">"true"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> startswith<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> endswith<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> concat<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> <span class="token string">"target1"</span><span class="token operator">=</span><span class="token string">"IoT"</span><span class="token punctuation">,</span> <span class="token string">"target2"</span><span class="token operator">=</span><span class="token string">"DB"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> concat<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> <span class="token string">"target1"</span><span class="token operator">=</span><span class="token string">"IoT"</span><span class="token punctuation">,</span> <span class="token string">"target2"</span><span class="token operator">=</span><span class="token string">"DB"</span><span class="token punctuation">,</span> <span class="token string">"series_behind"</span><span class="token operator">=</span><span class="token string">"true"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> substring<span class="token punctuation">(</span>s1 <span class="token keyword">from</span> <span class="token number">1</span> <span class="token keyword">for</span> <span class="token number">2</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> <span class="token keyword">replace</span><span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'es'</span><span class="token punctuation">,</span> <span class="token string">'tt'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> upper<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> lower<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s3<span class="token punctuation">,</span> trim<span class="token punctuation">(</span>s3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> strcmp<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> strreplace<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"replace"</span><span class="token operator">=</span><span class="token string">"/"</span><span class="token punctuation">,</span> <span class="token string">"limit"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> strreplace<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"target"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"replace"</span><span class="token operator">=</span><span class="token string">"/"</span><span class="token punctuation">,</span> <span class="token string">"limit"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span> <span class="token string">"offset"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span> <span class="token string">"reverse"</span><span class="token operator">=</span><span class="token string">"true"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> regexmatch<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">"\d+\.\d+\.\d+\.\d+"</span><span class="token punctuation">,</span> <span class="token string">"group"</span><span class="token operator">=</span><span class="token string">"0"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> regexreplace<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">"192\.168\.0\.(\d+)"</span><span class="token punctuation">,</span> <span class="token string">"replace"</span><span class="token operator">=</span><span class="token string">"cluster-$1"</span><span class="token punctuation">,</span> <span class="token string">"limit"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> regexsplit<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"index"</span><span class="token operator">=</span><span class="token string">"-1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> regexsplit<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"regex"</span><span class="token operator">=</span><span class="token string">","</span><span class="token punctuation">,</span> <span class="token string">"index"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="数据类型转换函数" tabindex="-1"><a class="header-anchor" href="#数据类型转换函数"><span>数据类型转换函数</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Data Type Conversion Function</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">SELECT</span> cast<span class="token punctuation">(</span>s1 <span class="token keyword">as</span> INT32<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="常序列生成函数" tabindex="-1"><a class="header-anchor" href="#常序列生成函数"><span>常序列生成函数</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Constant Timeseries Generating Functions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> s2<span class="token punctuation">,</span> const<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'value'</span><span class="token operator">=</span><span class="token string">'1024'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'INT64'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> pi<span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> e<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1<span class="token punctuation">;</span> </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="选择函数" tabindex="-1"><a class="header-anchor" href="#选择函数"><span>选择函数</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Selector Functions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> top_k<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> bottom_k<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d2 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator">></span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">12</span><span class="token operator">-</span><span class="token number">10</span>T20:<span class="token number">36</span>:<span class="token number">15.530</span><span class="token operator">+</span><span class="token number">08</span>:<span class="token number">00</span><span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="区间查询函数" tabindex="-1"><a class="header-anchor" href="#区间查询函数"><span>区间查询函数</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Continuous Interval Functions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> zero_count<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> non_zero_count<span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> zero_duration<span class="token punctuation">(</span>s3<span class="token punctuation">)</span><span class="token punctuation">,</span> non_zero_duration<span class="token punctuation">(</span>s4<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg<span class="token punctuation">.</span>d2<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="趋势计算函数" tabindex="-1"><a class="header-anchor" href="#趋势计算函数"><span>趋势计算函数</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Variation Trend Calculation Functions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> s1<span class="token punctuation">,</span> time_difference<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> difference<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> non_negative_difference<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> derivative<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> non_negative_derivative<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>sg1<span class="token punctuation">.</span>d1 <span class="token keyword">limit</span> <span class="token number">5</span> <span class="token keyword">offset</span> <span class="token number">1000</span><span class="token punctuation">;</span> </span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">SELECT</span> DIFF<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> DIFF<span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">SELECT</span> DIFF<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> DIFF<span class="token punctuation">(</span>s2<span class="token punctuation">,</span> <span class="token string">'ignoreNull'</span><span class="token operator">=</span><span class="token string">'false'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">;</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="采样函数" tabindex="-1"><a class="header-anchor" href="#采样函数"><span>采样函数</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Sample Functions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> equal_size_bucket_random_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> random_sample <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'avg'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_avg<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'max'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_max<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span><span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'min'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_min<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'sum'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_sum<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'extreme'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_extreme<span class="token punctuation">,</span> equal_size_bucket_agg_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'variance'</span><span class="token punctuation">,</span><span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> agg_variance <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> equal_size_bucket_m4_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> M4_sample <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"><span class="token keyword">select</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'avg'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_avg_sample<span class="token punctuation">,</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'stendis'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_stendis_sample<span class="token punctuation">,</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'cos'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_cos_sample<span class="token punctuation">,</span> equal_size_bucket_outlier_sample<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'proportion'</span><span class="token operator">=</span><span class="token string">'0.1'</span><span class="token punctuation">,</span> <span class="token string">'type'</span><span class="token operator">=</span><span class="token string">'prenextdis'</span><span class="token punctuation">,</span> <span class="token string">'number'</span><span class="token operator">=</span><span class="token string">'2'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> outlier_prenextdis_sample <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> M4<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'timeInterval'</span><span class="token operator">=</span><span class="token string">'25'</span><span class="token punctuation">,</span><span class="token string">'displayWindowBegin'</span><span class="token operator">=</span><span class="token string">'0'</span><span class="token punctuation">,</span><span class="token string">'displayWindowEnd'</span><span class="token operator">=</span><span class="token string">'100'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>vehicle<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> M4<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'windowSize'</span><span class="token operator">=</span><span class="token string">'10'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>vehicle<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="时间序列处理函数" tabindex="-1"><a class="header-anchor" href="#时间序列处理函数"><span>时间序列处理函数</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Time-Series</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> change_points<span class="token punctuation">(</span>s1<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s2<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s3<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s4<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s5<span class="token punctuation">)</span><span class="token punctuation">,</span> change_points<span class="token punctuation">(</span>s6<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>testChangePoints<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="数据质量函数库" tabindex="-1"><a class="header-anchor" href="#数据质量函数库"><span>数据质量函数库</span></a></h2><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Operator-and-Expression</a></p><h3 id="数据质量" tabindex="-1"><a class="header-anchor" href="#数据质量"><span>数据质量</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Data-Quality</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># Completeness</span></span> |
| <span class="line"><span class="token keyword">select</span> completeness<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"><span class="token keyword">select</span> completeness<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Consistency</span></span> |
| <span class="line"><span class="token keyword">select</span> consistency<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"><span class="token keyword">select</span> consistency<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Timeliness</span></span> |
| <span class="line"><span class="token keyword">select</span> timeliness<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"><span class="token keyword">select</span> timeliness<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Validity</span></span> |
| <span class="line"><span class="token keyword">select</span> Validity<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"><span class="token keyword">select</span> Validity<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"15"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">01</span>:<span class="token number">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Accuracy</span></span> |
| <span class="line"><span class="token keyword">select</span> Accuracy<span class="token punctuation">(</span>t1<span class="token punctuation">,</span>t2<span class="token punctuation">,</span>t3<span class="token punctuation">,</span>m1<span class="token punctuation">,</span>m2<span class="token punctuation">,</span>m3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="数据画像" tabindex="-1"><a class="header-anchor" href="#数据画像"><span>数据画像</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Data-Profiling</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># ACF</span></span> |
| <span class="line"><span class="token keyword">select</span> acf<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">05</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Distinct</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token keyword">distinct</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Histogram</span></span> |
| <span class="line"><span class="token keyword">select</span> histogram<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"min"</span><span class="token operator">=</span><span class="token string">"1"</span><span class="token punctuation">,</span><span class="token string">"max"</span><span class="token operator">=</span><span class="token string">"20"</span><span class="token punctuation">,</span><span class="token string">"count"</span><span class="token operator">=</span><span class="token string">"10"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Integral</span></span> |
| <span class="line"><span class="token keyword">select</span> integral<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">10</span></span> |
| <span class="line"><span class="token keyword">select</span> integral<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"unit"</span><span class="token operator">=</span><span class="token string">"1m"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">10</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># IntegralAvg</span></span> |
| <span class="line"><span class="token keyword">select</span> integralavg<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">10</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Mad</span></span> |
| <span class="line"><span class="token keyword">select</span> mad<span class="token punctuation">(</span>s0<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"><span class="token keyword">select</span> mad<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.01"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Median</span></span> |
| <span class="line"><span class="token keyword">select</span> median<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.01"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MinMax</span></span> |
| <span class="line"><span class="token keyword">select</span> minmax<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Mode</span></span> |
| <span class="line"><span class="token keyword">select</span> <span class="token keyword">mode</span><span class="token punctuation">(</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MvAvg</span></span> |
| <span class="line"><span class="token keyword">select</span> mvavg<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"window"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># PACF</span></span> |
| <span class="line"><span class="token keyword">select</span> pacf<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"lag"</span><span class="token operator">=</span><span class="token string">"5"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Percentile</span></span> |
| <span class="line"><span class="token keyword">select</span> percentile<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"rank"</span><span class="token operator">=</span><span class="token string">"0.2"</span><span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.01"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Quantile</span></span> |
| <span class="line"><span class="token keyword">select</span> quantile<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">"rank"</span><span class="token operator">=</span><span class="token string">"0.2"</span><span class="token punctuation">,</span> <span class="token string">"K"</span><span class="token operator">=</span><span class="token string">"800"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Period</span></span> |
| <span class="line"><span class="token keyword">select</span> period<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d3</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># QLB</span></span> |
| <span class="line"><span class="token keyword">select</span> QLB<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Resample</span></span> |
| <span class="line"><span class="token keyword">select</span> resample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'every'</span><span class="token operator">=</span><span class="token string">'5m'</span><span class="token punctuation">,</span><span class="token string">'interp'</span><span class="token operator">=</span><span class="token string">'linear'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> resample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'every'</span><span class="token operator">=</span><span class="token string">'30m'</span><span class="token punctuation">,</span><span class="token string">'aggr'</span><span class="token operator">=</span><span class="token string">'first'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> resample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'every'</span><span class="token operator">=</span><span class="token string">'30m'</span><span class="token punctuation">,</span><span class="token string">'start'</span><span class="token operator">=</span><span class="token string">'2021-03-06 15:00:00'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Sample</span></span> |
| <span class="line"><span class="token keyword">select</span> sample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'reservoir'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> sample<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'isometric'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Segment</span></span> |
| <span class="line"><span class="token keyword">select</span> segment<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"error"</span><span class="token operator">=</span><span class="token string">"0.1"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Skew</span></span> |
| <span class="line"><span class="token keyword">select</span> skew<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Spline</span></span> |
| <span class="line"><span class="token keyword">select</span> spline<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"points"</span><span class="token operator">=</span><span class="token string">"151"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Spread</span></span> |
| <span class="line"><span class="token keyword">select</span> spread<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Stddev</span></span> |
| <span class="line"><span class="token keyword">select</span> stddev<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># ZScore</span></span> |
| <span class="line"><span class="token keyword">select</span> zscore<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="异常检测" tabindex="-1"><a class="header-anchor" href="#异常检测"><span>异常检测</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Anomaly-Detection</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># IQR</span></span> |
| <span class="line"><span class="token keyword">select</span> iqr<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># KSigma</span></span> |
| <span class="line"><span class="token keyword">select</span> ksigma<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"k"</span><span class="token operator">=</span><span class="token string">"1.0"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># LOF</span></span> |
| <span class="line"><span class="token keyword">select</span> lof<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span><span class="token operator"><</span><span class="token number">1000</span></span> |
| <span class="line"><span class="token keyword">select</span> lof<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">"method"</span><span class="token operator">=</span><span class="token string">"series"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span><span class="token operator"><</span><span class="token number">1000</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MissDetect</span></span> |
| <span class="line"><span class="token keyword">select</span> missdetect<span class="token punctuation">(</span>s2<span class="token punctuation">,</span><span class="token string">'minlen'</span><span class="token operator">=</span><span class="token string">'10'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Range</span></span> |
| <span class="line"><span class="token keyword">select</span> range<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"lower_bound"</span><span class="token operator">=</span><span class="token string">"101.0"</span><span class="token punctuation">,</span><span class="token string">"upper_bound"</span><span class="token operator">=</span><span class="token string">"125.0"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">30</span></span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># TwoSidedFilter</span></span> |
| <span class="line"><span class="token keyword">select</span> TwoSidedFilter<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> <span class="token string">'len'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">,</span> <span class="token string">'threshold'</span><span class="token operator">=</span><span class="token string">'0.3'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Outlier</span></span> |
| <span class="line"><span class="token keyword">select</span> outlier<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"r"</span><span class="token operator">=</span><span class="token string">"5.0"</span><span class="token punctuation">,</span><span class="token string">"k"</span><span class="token operator">=</span><span class="token string">"4"</span><span class="token punctuation">,</span><span class="token string">"w"</span><span class="token operator">=</span><span class="token string">"10"</span><span class="token punctuation">,</span><span class="token string">"s"</span><span class="token operator">=</span><span class="token string">"5"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MasterTrain</span></span> |
| <span class="line"><span class="token keyword">select</span> MasterTrain<span class="token punctuation">(</span>lo<span class="token punctuation">,</span>la<span class="token punctuation">,</span>m_lo<span class="token punctuation">,</span>m_la<span class="token punctuation">,</span><span class="token string">'p'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'eta'</span><span class="token operator">=</span><span class="token string">'1.0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MasterDetect</span></span> |
| <span class="line"><span class="token keyword">select</span> MasterDetect<span class="token punctuation">(</span>lo<span class="token punctuation">,</span>la<span class="token punctuation">,</span>m_lo<span class="token punctuation">,</span>m_la<span class="token punctuation">,</span>model<span class="token punctuation">,</span><span class="token string">'output_type'</span><span class="token operator">=</span><span class="token string">'repair'</span><span class="token punctuation">,</span><span class="token string">'p'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'eta'</span><span class="token operator">=</span><span class="token string">'1.0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"><span class="token keyword">select</span> MasterDetect<span class="token punctuation">(</span>lo<span class="token punctuation">,</span>la<span class="token punctuation">,</span>m_lo<span class="token punctuation">,</span>m_la<span class="token punctuation">,</span>model<span class="token punctuation">,</span><span class="token string">'output_type'</span><span class="token operator">=</span><span class="token string">'anomaly'</span><span class="token punctuation">,</span><span class="token string">'p'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token string">'3'</span><span class="token punctuation">,</span><span class="token string">'eta'</span><span class="token operator">=</span><span class="token string">'1.0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="频域分析" tabindex="-1"><a class="header-anchor" href="#频域分析"><span>频域分析</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Frequency-Domain</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># Conv</span></span> |
| <span class="line"><span class="token keyword">select</span> conv<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Deconv</span></span> |
| <span class="line"><span class="token keyword">select</span> deconv<span class="token punctuation">(</span>s3<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"><span class="token keyword">select</span> deconv<span class="token punctuation">(</span>s3<span class="token punctuation">,</span>s2<span class="token punctuation">,</span><span class="token string">'result'</span><span class="token operator">=</span><span class="token string">'remainder'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># DWT</span></span> |
| <span class="line"><span class="token keyword">select</span> dwt<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"method"</span><span class="token operator">=</span><span class="token string">"haar"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># FFT</span></span> |
| <span class="line"><span class="token keyword">select</span> fft<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> fft<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'result'</span><span class="token operator">=</span><span class="token string">'real'</span><span class="token punctuation">,</span> <span class="token string">'compress'</span><span class="token operator">=</span><span class="token string">'0.99'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> fft<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> <span class="token string">'result'</span><span class="token operator">=</span><span class="token string">'imag'</span><span class="token punctuation">,</span><span class="token string">'compress'</span><span class="token operator">=</span><span class="token string">'0.99'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># HighPass</span></span> |
| <span class="line"><span class="token keyword">select</span> highpass<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'wpass'</span><span class="token operator">=</span><span class="token string">'0.45'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># IFFT</span></span> |
| <span class="line"><span class="token keyword">select</span> ifft<span class="token punctuation">(</span>re<span class="token punctuation">,</span> im<span class="token punctuation">,</span> <span class="token string">'interval'</span><span class="token operator">=</span><span class="token string">'1m'</span><span class="token punctuation">,</span> <span class="token string">'start'</span><span class="token operator">=</span><span class="token string">'2021-01-01 00:00:00'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># LowPass</span></span> |
| <span class="line"><span class="token keyword">select</span> lowpass<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'wpass'</span><span class="token operator">=</span><span class="token string">'0.45'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="数据匹配" tabindex="-1"><a class="header-anchor" href="#数据匹配"><span>数据匹配</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Data-Matching</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># Cov</span></span> |
| <span class="line"><span class="token keyword">select</span> cov<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># DTW</span></span> |
| <span class="line"><span class="token keyword">select</span> dtw<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Pearson</span></span> |
| <span class="line"><span class="token keyword">select</span> pearson<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># PtnSym</span></span> |
| <span class="line"><span class="token keyword">select</span> ptnsym<span class="token punctuation">(</span>s4<span class="token punctuation">,</span> <span class="token string">'window'</span><span class="token operator">=</span><span class="token string">'5'</span><span class="token punctuation">,</span> <span class="token string">'threshold'</span><span class="token operator">=</span><span class="token string">'0'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># XCorr</span></span> |
| <span class="line"><span class="token keyword">select</span> xcorr<span class="token punctuation">(</span>s1<span class="token punctuation">,</span> s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1 <span class="token keyword">where</span> <span class="token keyword">time</span> <span class="token operator"><=</span> <span class="token number">2020</span><span class="token operator">-</span><span class="token number">01</span><span class="token operator">-</span><span class="token number">01</span> <span class="token number">00</span>:<span class="token number">00</span>:<span class="token number">05</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="数据修复" tabindex="-1"><a class="header-anchor" href="#数据修复"><span>数据修复</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Data-Repairing</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># TimestampRepair</span></span> |
| <span class="line"><span class="token keyword">select</span> timestamprepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'interval'</span><span class="token operator">=</span><span class="token string">'10000'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"><span class="token keyword">select</span> timestamprepair<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># ValueFill</span></span> |
| <span class="line"><span class="token keyword">select</span> valuefill<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"><span class="token keyword">select</span> valuefill<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">"method"</span><span class="token operator">=</span><span class="token string">"previous"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># ValueRepair</span></span> |
| <span class="line"><span class="token keyword">select</span> valuerepair<span class="token punctuation">(</span>s1<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"><span class="token keyword">select</span> valuerepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'LsGreedy'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># MasterRepair</span></span> |
| <span class="line"><span class="token keyword">select</span> MasterRepair<span class="token punctuation">(</span>t1<span class="token punctuation">,</span>t2<span class="token punctuation">,</span>t3<span class="token punctuation">,</span>m1<span class="token punctuation">,</span>m2<span class="token punctuation">,</span>m3<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># SeasonalRepair</span></span> |
| <span class="line"><span class="token keyword">select</span> seasonalrepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'period'</span><span class="token operator">=</span><span class="token number">3</span><span class="token punctuation">,</span><span class="token string">'k'</span><span class="token operator">=</span><span class="token number">2</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"><span class="token keyword">select</span> seasonalrepair<span class="token punctuation">(</span>s1<span class="token punctuation">,</span><span class="token string">'method'</span><span class="token operator">=</span><span class="token string">'improved'</span><span class="token punctuation">,</span><span class="token string">'period'</span><span class="token operator">=</span><span class="token number">3</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d2</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="序列发现" tabindex="-1"><a class="header-anchor" href="#序列发现"><span>序列发现</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Series-Discovery</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># ConsecutiveSequences</span></span> |
| <span class="line"><span class="token keyword">select</span> consecutivesequences<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">,</span><span class="token string">'gap'</span><span class="token operator">=</span><span class="token string">'5m'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"><span class="token keyword">select</span> consecutivesequences<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># ConsecutiveWindows</span></span> |
| <span class="line"><span class="token keyword">select</span> consecutivewindows<span class="token punctuation">(</span>s1<span class="token punctuation">,</span>s2<span class="token punctuation">,</span><span class="token string">'length'</span><span class="token operator">=</span><span class="token string">'10m'</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="机器学习" tabindex="-1"><a class="header-anchor" href="#机器学习"><span>机器学习</span></a></h3><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Machine-Learning</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token comment"># AR</span></span> |
| <span class="line"><span class="token keyword">select</span> ar<span class="token punctuation">(</span>s0<span class="token punctuation">,</span><span class="token string">"p"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d0</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># Representation</span></span> |
| <span class="line"><span class="token keyword">select</span> representation<span class="token punctuation">(</span>s0<span class="token punctuation">,</span><span class="token string">"tb"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">,</span><span class="token string">"vb"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d0</span> |
| <span class="line"></span> |
| <span class="line"><span class="token comment"># RM</span></span> |
| <span class="line"><span class="token keyword">select</span> rm<span class="token punctuation">(</span>s0<span class="token punctuation">,</span> s1<span class="token punctuation">,</span><span class="token string">"tb"</span><span class="token operator">=</span><span class="token string">"3"</span><span class="token punctuation">,</span><span class="token string">"vb"</span><span class="token operator">=</span><span class="token string">"2"</span><span class="token punctuation">)</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test<span class="token punctuation">.</span>d0</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="lambda-表达式" tabindex="-1"><a class="header-anchor" href="#lambda-表达式"><span>Lambda 表达式</span></a></h2><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Lambda</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {x + x}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl1<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {x * 3}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl2<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {x * x}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl3<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'x -> {multiply(x, 100)}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl4<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> st<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'(x, y) -> {x + y}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl5<span class="token punctuation">,</span> jexl<span class="token punctuation">(</span>temperature<span class="token punctuation">,</span> st<span class="token punctuation">,</span> str<span class="token punctuation">,</span> <span class="token string">'expr'</span><span class="token operator">=</span><span class="token string">'(x, y, z) -> {x + y + z}'</span><span class="token punctuation">)</span> <span class="token keyword">as</span> jexl6 <span class="token keyword">from</span> root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span>wf01<span class="token punctuation">.</span>wt01<span class="token punctuation">;</span><span class="token identifier"><span class="token punctuation">`</span><span class="token punctuation">`</span></span><span class="token punctuation">`</span></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="条件表达式" tabindex="-1"><a class="header-anchor" href="#条件表达式"><span>条件表达式</span></a></h2><p>更多见文档<a class="route-link" href="/zh/UserGuide/V1.2.x/User-Manual/Operator-and-Expression.html">Conditional Expressions</a></p><div class="language-sql line-numbers-mode" data-highlighter="prismjs" data-ext="sql" data-title="sql"><pre><code><span class="line"><span class="token keyword">select</span> T<span class="token punctuation">,</span> P<span class="token punctuation">,</span> <span class="token keyword">case</span></span> |
| <span class="line"><span class="token keyword">when</span> <span class="token number">1000</span><span class="token operator"><</span>T <span class="token operator">and</span> T<span class="token operator"><</span><span class="token number">1050</span> <span class="token operator">and</span> <span class="token number">1000000</span><span class="token operator"><</span>P <span class="token operator">and</span> P<span class="token operator"><</span><span class="token number">1100000</span> <span class="token keyword">then</span> <span class="token string">"good!"</span></span> |
| <span class="line"><span class="token keyword">when</span> T<span class="token operator"><=</span><span class="token number">1000</span> <span class="token operator">or</span> T<span class="token operator">>=</span><span class="token number">1050</span> <span class="token keyword">then</span> <span class="token string">"bad temperature"</span></span> |
| <span class="line"><span class="token keyword">when</span> P<span class="token operator"><=</span><span class="token number">1000000</span> <span class="token operator">or</span> P<span class="token operator">>=</span><span class="token number">1100000</span> <span class="token keyword">then</span> <span class="token string">"bad pressure"</span></span> |
| <span class="line"><span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>result<span class="token punctuation">`</span></span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>test1</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> str<span class="token punctuation">,</span> <span class="token keyword">case</span></span> |
| <span class="line"><span class="token keyword">when</span> str <span class="token operator">like</span> <span class="token string">"%cc%"</span> <span class="token keyword">then</span> <span class="token string">"has cc"</span></span> |
| <span class="line"><span class="token keyword">when</span> str <span class="token operator">like</span> <span class="token string">"%dd%"</span> <span class="token keyword">then</span> <span class="token string">"has dd"</span></span> |
| <span class="line"><span class="token keyword">else</span> <span class="token string">"no cc and dd"</span> <span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>result<span class="token punctuation">`</span></span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>test2</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span></span> |
| <span class="line"><span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> x<span class="token operator"><=</span><span class="token number">1</span> <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>(-∞,1]<span class="token punctuation">`</span></span><span class="token punctuation">,</span></span> |
| <span class="line"><span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> <span class="token number">1</span><span class="token operator"><</span>x <span class="token operator">and</span> x<span class="token operator"><=</span><span class="token number">3</span> <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>(1,3]<span class="token punctuation">`</span></span><span class="token punctuation">,</span></span> |
| <span class="line"><span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> <span class="token number">3</span><span class="token operator"><</span>x <span class="token operator">and</span> x<span class="token operator"><=</span><span class="token number">7</span> <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>(3,7]<span class="token punctuation">`</span></span><span class="token punctuation">,</span></span> |
| <span class="line"><span class="token function">count</span><span class="token punctuation">(</span><span class="token keyword">case</span> <span class="token keyword">when</span> <span class="token number">7</span><span class="token operator"><</span>x <span class="token keyword">then</span> <span class="token number">1</span> <span class="token keyword">end</span><span class="token punctuation">)</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>(7,+∞)<span class="token punctuation">`</span></span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>test3</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> x<span class="token punctuation">,</span> <span class="token keyword">case</span> x <span class="token keyword">when</span> <span class="token number">1</span> <span class="token keyword">then</span> <span class="token string">"one"</span> <span class="token keyword">when</span> <span class="token number">2</span> <span class="token keyword">then</span> <span class="token string">"two"</span> <span class="token keyword">else</span> <span class="token string">"other"</span> <span class="token keyword">end</span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test4</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> x<span class="token punctuation">,</span> <span class="token keyword">case</span> x <span class="token keyword">when</span> <span class="token number">1</span> <span class="token keyword">then</span> <span class="token boolean">true</span> <span class="token keyword">when</span> <span class="token number">2</span> <span class="token keyword">then</span> <span class="token boolean">false</span> <span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>result<span class="token punctuation">`</span></span> <span class="token keyword">from</span> root<span class="token punctuation">.</span>test4</span> |
| <span class="line"></span> |
| <span class="line"><span class="token keyword">select</span> x<span class="token punctuation">,</span> <span class="token keyword">case</span> x</span> |
| <span class="line"><span class="token keyword">when</span> <span class="token number">1</span> <span class="token keyword">then</span> <span class="token number">1</span></span> |
| <span class="line"><span class="token keyword">when</span> <span class="token number">2</span> <span class="token keyword">then</span> <span class="token number">222222222222222</span></span> |
| <span class="line"><span class="token keyword">when</span> <span class="token number">3</span> <span class="token keyword">then</span> <span class="token number">3.3</span></span> |
| <span class="line"><span class="token keyword">when</span> <span class="token number">4</span> <span class="token keyword">then</span> <span class="token number">4.4444444444444</span></span> |
| <span class="line"><span class="token keyword">end</span> <span class="token keyword">as</span> <span class="token identifier"><span class="token punctuation">`</span>result<span class="token punctuation">`</span></span></span> |
| <span class="line"><span class="token keyword">from</span> root<span class="token punctuation">.</span>test4</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="触发器" tabindex="-1"><a class="header-anchor" href="#触发器"><span>触发器</span></a></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"><span>使用 SQL 语句注册该触发器</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">// Create Trigger</span> |
| <span class="line"></span> |
| <span class="line">createTrigger</span> |
| <span class="line"></span> |
| <span class="line"> : CREATE triggerType TRIGGER triggerName=identifier triggerEventClause ON pathPattern AS className=STRING_LITERAL uriClause? triggerAttributeClause?</span> |
| <span class="line"></span> |
| <span class="line"> ;</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">triggerType</span> |
| <span class="line"></span> |
| <span class="line"> : STATELESS | STATEFUL</span> |
| <span class="line"></span> |
| <span class="line"> ;</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">triggerEventClause</span> |
| <span class="line"></span> |
| <span class="line"> : (BEFORE | AFTER) INSERT</span> |
| <span class="line"></span> |
| <span class="line"> ;</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">uriClause</span> |
| <span class="line"></span> |
| <span class="line"> : USING URI uri</span> |
| <span class="line"></span> |
| <span class="line"> ;</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">uri</span> |
| <span class="line"></span> |
| <span class="line"> : STRING_LITERAL</span> |
| <span class="line"></span> |
| <span class="line"> ;</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">triggerAttributeClause</span> |
| <span class="line"></span> |
| <span class="line"> : WITH LR_BRACKET triggerAttribute (COMMA triggerAttribute)* RR_BRACKET</span> |
| <span class="line"></span> |
| <span class="line"> ;</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">triggerAttribute</span> |
| <span class="line"></span> |
| <span class="line"> : key=attributeKey operator_eq value=attributeValue</span> |
| <span class="line"></span> |
| <span class="line"> ;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="sql-语句示例" tabindex="-1"><a class="header-anchor" href="#sql-语句示例"><span>SQL 语句示例</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE STATELESS TRIGGER triggerTest</span> |
| <span class="line"></span> |
| <span class="line">BEFORE INSERT</span> |
| <span class="line"></span> |
| <span class="line">ON root.sg.**</span> |
| <span class="line"></span> |
| <span class="line">AS 'org.apache.iotdb.trigger.ClusterAlertingExample'</span> |
| <span class="line"></span> |
| <span class="line">USING URI 'http://jar/ClusterAlertingExample.jar'</span> |
| <span class="line"></span> |
| <span class="line">WITH (</span> |
| <span class="line"></span> |
| <span class="line"> "name" = "trigger",</span> |
| <span class="line"></span> |
| <span class="line"> "limit" = "100"</span> |
| <span class="line"></span> |
| <span class="line">)</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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="卸载触发器" tabindex="-1"><a class="header-anchor" href="#卸载触发器"><span>卸载触发器</span></a></h3><h4 id="卸载触发器的-sql-语法如下" tabindex="-1"><a class="header-anchor" href="#卸载触发器的-sql-语法如下"><span>卸载触发器的 SQL 语法如下：</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">// Drop Trigger</span> |
| <span class="line"></span> |
| <span class="line">dropTrigger</span> |
| <span class="line"></span> |
| <span class="line"> : DROP TRIGGER triggerName=identifier</span> |
| <span class="line"></span> |
| <span class="line">;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="示例语句" tabindex="-1"><a class="header-anchor" href="#示例语句"><span>示例语句</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">DROP TRIGGER triggerTest1</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="查询触发器" tabindex="-1"><a class="header-anchor" href="#查询触发器"><span>查询触发器</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">SHOW TRIGGERS</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="连续查询-continuous-query-cq" tabindex="-1"><a class="header-anchor" href="#连续查询-continuous-query-cq"><span>连续查询（Continuous Query, CQ）</span></a></h2><h3 id="语法" tabindex="-1"><a class="header-anchor" href="#语法"><span>语法</span></a></h3><div class="language-Go line-numbers-mode" data-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">CREATE (CONTINUOUS QUERY | CQ) <cq_id> </span> |
| <span class="line">[RESAMPLE </span> |
| <span class="line"> [EVERY <every_interval>] </span> |
| <span class="line"> [BOUNDARY <execution_boundary_time>]</span> |
| <span class="line"> [RANGE <start_time_offset>[, end_time_offset]] </span> |
| <span class="line">]</span> |
| <span class="line">[TIMEOUT POLICY BLOCKED|DISCARD]</span> |
| <span class="line">BEGIN </span> |
| <span class="line"> SELECT CLAUSE</span> |
| <span class="line"> INTO CLAUSE</span> |
| <span class="line"> FROM CLAUSE</span> |
| <span class="line"> [WHERE CLAUSE]</span> |
| <span class="line"> [GROUP BY(<group_by_interval>[, <sliding_step>]) [, level = <level>]]</span> |
| <span class="line"> [HAVING CLAUSE]</span> |
| <span class="line"> [FILL {PREVIOUS | LINEAR | constant}]</span> |
| <span class="line"> [LIMIT rowLimit OFFSET rowOffset]</span> |
| <span class="line"> [ALIGN BY DEVICE]</span> |
| <span class="line">END</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="配置连续查询执行的周期性间隔" tabindex="-1"><a class="header-anchor" href="#配置连续查询执行的周期性间隔"><span>配置连续查询执行的周期性间隔</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE CONTINUOUS QUERY cq1</span> |
| <span class="line"></span> |
| <span class="line">RESAMPLE EVERY 20s</span> |
| <span class="line"></span> |
| <span class="line">BEGIN</span> |
| <span class="line"></span> |
| <span class="line"> SELECT max_value(temperature)</span> |
| <span class="line"></span> |
| <span class="line"> 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)</span> |
| <span class="line"></span> |
| <span class="line"> FROM root.ln.*.*</span> |
| <span class="line"></span> |
| <span class="line"> GROUP BY(10s)</span> |
| <span class="line"></span> |
| <span class="line">END</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">\> SELECT temperature_max from root.ln.*.*;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="配置连续查询的时间窗口大小" tabindex="-1"><a class="header-anchor" href="#配置连续查询的时间窗口大小"><span>配置连续查询的时间窗口大小</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE CONTINUOUS QUERY cq2</span> |
| <span class="line"></span> |
| <span class="line">RESAMPLE RANGE 40s</span> |
| <span class="line"></span> |
| <span class="line">BEGIN</span> |
| <span class="line"></span> |
| <span class="line"> SELECT max_value(temperature)</span> |
| <span class="line"></span> |
| <span class="line"> 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)</span> |
| <span class="line"></span> |
| <span class="line"> FROM root.ln.*.*</span> |
| <span class="line"></span> |
| <span class="line"> GROUP BY(10s)</span> |
| <span class="line"></span> |
| <span class="line">END</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">\> SELECT temperature_max from root.ln.*.*;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="同时配置连续查询执行的周期性间隔和时间窗口大小" tabindex="-1"><a class="header-anchor" href="#同时配置连续查询执行的周期性间隔和时间窗口大小"><span>同时配置连续查询执行的周期性间隔和时间窗口大小</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE CONTINUOUS QUERY cq3</span> |
| <span class="line"></span> |
| <span class="line">RESAMPLE EVERY 20s RANGE 40s</span> |
| <span class="line"></span> |
| <span class="line">BEGIN</span> |
| <span class="line"></span> |
| <span class="line"> SELECT max_value(temperature)</span> |
| <span class="line"></span> |
| <span class="line"> 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)</span> |
| <span class="line"></span> |
| <span class="line"> FROM root.ln.*.*</span> |
| <span class="line"></span> |
| <span class="line"> GROUP BY(10s)</span> |
| <span class="line"></span> |
| <span class="line"> FILL(100.0)</span> |
| <span class="line"></span> |
| <span class="line">END</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">\> SELECT temperature_max from root.ln.*.*;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="配置连续查询每次查询执行时间窗口的结束时间" tabindex="-1"><a class="header-anchor" href="#配置连续查询每次查询执行时间窗口的结束时间"><span>配置连续查询每次查询执行时间窗口的结束时间</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE CONTINUOUS QUERY cq4</span> |
| <span class="line"></span> |
| <span class="line">RESAMPLE EVERY 20s RANGE 40s, 20s</span> |
| <span class="line"></span> |
| <span class="line">BEGIN</span> |
| <span class="line"></span> |
| <span class="line"> SELECT max_value(temperature)</span> |
| <span class="line"></span> |
| <span class="line"> 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)</span> |
| <span class="line"></span> |
| <span class="line"> FROM root.ln.*.*</span> |
| <span class="line"></span> |
| <span class="line"> GROUP BY(10s)</span> |
| <span class="line"></span> |
| <span class="line"> FILL(100.0)</span> |
| <span class="line"></span> |
| <span class="line">END</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">\> SELECT temperature_max from root.ln.*.*;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="没有group-by-time子句的连续查询" tabindex="-1"><a class="header-anchor" href="#没有group-by-time子句的连续查询"><span>没有GROUP BY TIME子句的连续查询</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE CONTINUOUS QUERY cq5</span> |
| <span class="line"></span> |
| <span class="line">RESAMPLE EVERY 20s</span> |
| <span class="line"></span> |
| <span class="line">BEGIN</span> |
| <span class="line"></span> |
| <span class="line"> SELECT temperature + 1</span> |
| <span class="line"></span> |
| <span class="line"> INTO root.precalculated_sg.::(temperature)</span> |
| <span class="line"></span> |
| <span class="line"> FROM root.ln.*.*</span> |
| <span class="line"></span> |
| <span class="line"> align by device</span> |
| <span class="line"></span> |
| <span class="line">END</span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line"></span> |
| <span class="line">\> SELECT temperature from root.precalculated_sg.*.* align by device;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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="连续查询的管理" tabindex="-1"><a class="header-anchor" href="#连续查询的管理"><span>连续查询的管理</span></a></h3><h4 id="查询系统已有的连续查询" tabindex="-1"><a class="header-anchor" href="#查询系统已有的连续查询"><span>查询系统已有的连续查询</span></a></h4><p>展示集群中所有的已注册的连续查询</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">SHOW (CONTINUOUS QUERIES | CQS) </span> |
| <span class="line"></span> |
| <span class="line">SHOW CONTINUOUS QUERIES;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="删除已有的连续查询" tabindex="-1"><a class="header-anchor" href="#删除已有的连续查询"><span>删除已有的连续查询</span></a></h4><p>删除指定的名为cq_id的连续查询：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">DROP (CONTINUOUS QUERY | CQ) <cq_id></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">DROP CONTINUOUS QUERY s1_count_cq;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="作为子查询的替代品" tabindex="-1"><a class="header-anchor" href="#作为子查询的替代品"><span>作为子查询的替代品</span></a></h4><p>\1. 创建一个连续查询</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE CQ s1_count_cq </span> |
| <span class="line"></span> |
| <span class="line">BEGIN </span> |
| <span class="line"></span> |
| <span class="line"> SELECT count(s1) </span> |
| <span class="line"></span> |
| <span class="line"> INTO root.sg_count.d.count_s1</span> |
| <span class="line"></span> |
| <span class="line"> FROM root.sg.d</span> |
| <span class="line"></span> |
| <span class="line"> GROUP BY(30m)</span> |
| <span class="line"></span> |
| <span class="line">END</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ol><li>查询连续查询的结果</li></ol><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">SELECT avg(count_s1) from root.sg_count.d;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="用户自定义函数" tabindex="-1"><a class="header-anchor" href="#用户自定义函数"><span>用户自定义函数</span></a></h2><h3 id="udfparameters" tabindex="-1"><a class="header-anchor" href="#udfparameters"><span>UDFParameters</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">SELECT UDF(s1, s2, 'key1'='iotdb', 'key2'='123.45') FROM root.sg.d;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="udf-注册" tabindex="-1"><a class="header-anchor" href="#udf-注册"><span>UDF 注册</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE FUNCTION <UDF-NAME> AS <UDF-CLASS-FULL-PATHNAME> (USING URI URI-STRING)?</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="不指定uri" tabindex="-1"><a class="header-anchor" href="#不指定uri"><span>不指定URI</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE FUNCTION example AS 'org.apache.iotdb.udf.UDTFExample'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="指定uri" tabindex="-1"><a class="header-anchor" href="#指定uri"><span>指定URI</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE FUNCTION example AS 'org.apache.iotdb.udf.UDTFExample' USING URI 'http://jar/example.jar'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="udf-卸载" tabindex="-1"><a class="header-anchor" href="#udf-卸载"><span>UDF 卸载</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">DROP FUNCTION <UDF-NAME></span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">DROP FUNCTION example</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="udf-查询" tabindex="-1"><a class="header-anchor" href="#udf-查询"><span>UDF 查询</span></a></h3><h4 id="带自定义输入参数的查询" tabindex="-1"><a class="header-anchor" href="#带自定义输入参数的查询"><span>带自定义输入参数的查询</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">SELECT example(s1, 'key1'='value1', 'key2'='value2'), example(*, 'key3'='value3') FROM root.sg.d1;</span> |
| <span class="line"></span> |
| <span class="line">SELECT example(s1, s2, 'key1'='value1', 'key2'='value2') FROM root.sg.d1;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="与其他查询的嵌套查询" tabindex="-1"><a class="header-anchor" href="#与其他查询的嵌套查询"><span>与其他查询的嵌套查询</span></a></h4><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">SELECT s1, s2, example(s1, s2) FROM root.sg.d1;</span> |
| <span class="line"></span> |
| <span class="line">SELECT *, example(*) FROM root.sg.d1 DISABLE ALIGN;</span> |
| <span class="line"></span> |
| <span class="line">SELECT s1 * example(* / s1 + s2) FROM root.sg.d1;</span> |
| <span class="line"></span> |
| <span class="line">SELECT s1, s2, s1 + example(s1, s2), s1 - example(s1 + example(s1, s2) / s2) FROM root.sg.d1;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="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="查看所有注册的-udf" tabindex="-1"><a class="header-anchor" href="#查看所有注册的-udf"><span>查看所有注册的 UDF</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">SHOW FUNCTIONS</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="权限管理" tabindex="-1"><a class="header-anchor" href="#权限管理"><span>权限管理</span></a></h2><h3 id="_1、创建用户" tabindex="-1"><a class="header-anchor" href="#_1、创建用户"><span>1、创建用户</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">CREATE USER `ln_write_user` 'write_pwd'</span> |
| <span class="line"></span> |
| <span class="line">CREATE USER `sgcc_write_user` 'write_pwd'</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_2、展示用户" tabindex="-1"><a class="header-anchor" href="#_2、展示用户"><span>2、展示用户</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">LIST USER</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="_3、赋予用户权限" tabindex="-1"><a class="header-anchor" href="#_3、赋予用户权限"><span>3、赋予用户权限</span></a></h3><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">INSERT INTO root.ln.wf01.wt01(timestamp,status) values(1509465600000,true)</span> |
| <span class="line"></span> |
| <span class="line">系统不允许用户进行此操作，会提示错误：</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> INSERT INTO root.ln.wf01.wt01(timestamp,status) values(1509465600000,true)</span> |
| <span class="line"></span> |
| <span class="line">Msg: 602: No permissions for this operation, please add privilege INSERT_TIMESERIES.</span> |
| <span class="line"></span> |
| <span class="line">用root用户分别赋予他们向对应 database 数据的写入权限</span> |
| <span class="line"></span> |
| <span class="line">GRANT USER `ln_write_user` PRIVILEGES INSERT_TIMESERIES on root.ln.**</span> |
| <span class="line"></span> |
| <span class="line">GRANT USER `sgcc_write_user` PRIVILEGES INSERT_TIMESERIES on root.sgcc1.**, root.sgcc2.**</span> |
| <span class="line"></span> |
| <span class="line">GRANT USER `ln_write_user` PRIVILEGES CREATE_USER</span> |
| <span class="line"></span> |
| <span class="line">使用ln_write_user再尝试写入数据</span> |
| <span class="line"></span> |
| <span class="line">IoTDB> INSERT INTO root.ln.wf01.wt01(timestamp, status) values(1509465600000, true)</span> |
| <span class="line"></span> |
| <span class="line">Msg: The statement is executed successfully.</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_4、撤销用户权限" tabindex="-1"><a class="header-anchor" href="#_4、撤销用户权限"><span>4、撤销用户权限</span></a></h3><p>用root用户撤销ln_write_user和sgcc_write_user的权限：</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">REVOKE USER `ln_write_user` PRIVILEGES INSERT_TIMESERIES on root.ln.**</span> |
| <span class="line"></span> |
| <span class="line">REVOKE USER `sgcc_write_user` PRIVILEGES INSERT_TIMESERIES on root.sgcc1.**, root.sgcc2.**</span> |
| <span class="line"></span> |
| <span class="line">REVOKE USER `ln_write_user` PRIVILEGES CREATE_USER</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>撤销权限后，ln_write_user就没有向root.ln.**写入数据的权限了</p><div class="language-text line-numbers-mode" data-highlighter="prismjs" data-ext="text" data-title="text"><pre><code><span class="line">INSERT INTO root.ln.wf01.wt01(timestamp, status) values(1509465600000, true)</span> |
| <span class="line"></span> |
| <span class="line">Msg: 602: No permissions for this operation, please add privilege INSERT_TIMESERIES.</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="_5、sql-语句" tabindex="-1"><a class="header-anchor" href="#_5、sql-语句"><span>5、SQL 语句</span></a></h3><ul><li>创建用户</li></ul><div class="language-Go line-numbers-mode" data-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">CREATE USER <userName> <password>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">DROP USER <userName>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>Eg: IoTDB > DROP USER <code>xiaoming</code>;</p><ul><li>创建角色</li></ul><div class="language-Go line-numbers-mode" data-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">CREATE ROLE <roleName>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>Eg: IoTDB > CREATE ROLE <code>admin</code>;</p><ul><li>删除角色</li></ul><div class="language-Go line-numbers-mode" data-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">DROP USER <userName>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">GRANT USER <userName> PRIVILEGES <privileges> ON <nodeNames>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">GRANT USER <userName> PRIVILEGES ALL; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">GRANT ROLE <roleName> PRIVILEGES <privileges> ON <nodeNames>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">GRANT ROLE <roleName> PRIVILEGES ALL; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">GRANT <roleName> TO <userName>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">REVOKE USER <userName> PRIVILEGES <privileges> ON <nodeNames>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">REVOKE USER <userName> PRIVILEGES ALL; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">REVOKE ROLE <roleName> PRIVILEGES <privileges> ON <nodeNames>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">REVOKE ROLE <roleName> PRIVILEGES ALL; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">REVOKE <roleName> FROM <userName>;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">LIST USER OF ROLE <roleName>;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">REVOKE <roleName> FROM <userName>;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">LIST USER OF ROLE <roleName>;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">LIST PRIVILEGES USER <username>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">LIST PRIVILEGES USER <username> ON <paths>;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">LIST PRIVILEGES ROLE <roleName>;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">LIST PRIVILEGES ROLE <roleName> ON <paths>; </span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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-highlighter="prismjs" data-ext="Go" data-title="Go"><pre><code><span class="line">ALTER USER <username> SET PASSWORD <password>;</span> |
| <span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>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"><span>6、非root用户限制进行的操作</span></a></h3><h4 id="tsfile管理" tabindex="-1"><a class="header-anchor" href="#tsfile管理"><span>TsFile管理</span></a></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"><span>删除时间分区（实验性功能）</span></a></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"><span>连续查询</span></a></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"><span>运维命令</span></a></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 SYSTEM TO READONLY / WRITABLE</li></ul><p>Eg: IoTDB > SET SYSTEM 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"><span>水印工具</span></a></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="vp-page-meta"><div class="vp-meta-item edit-link"><a class="auto-link external-link vp-meta-label" href="https://github.com/apache/iotdb-docs/edit/main/src/zh/UserGuide/V1.2.x/SQL-Manual/SQL-Manual.md" aria-label="发现错误？在 GitHub 上编辑此页" rel="noopener noreferrer" target="_blank"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon" name="edit"><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<!----></a></div><div class="vp-meta-item git-info"><div class="update-time"><span class="vp-meta-label">上次编辑于: </span><!----></div><!----></div></footer><!----><!----><!----><!--]--></main><!--]--><!--]--><footer style="padding-bottom:2rem;"><span id="doc-version" style="display:none;">rel/1.2</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2024 The Apache Software Foundation.<br> Apache IoTDB, IoTDB, Apache, the Apache feather logo, and the Apache IoTDB project logo are either registered trademarks or trademarks of The Apache Software Foundation in all countries</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></footer></div><!--]--><!--]--><!--[--><!----><!--]--><!--]--></div> |
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