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15.793c0 95.019-73.789 172.82-165.96 177.093z"></path></svg><span>About 23 min</span><meta property="timeRequired" content="PT23M"></span><!----><!----></div><hr></div><div class="vp-toc-placeholder"><aside id="toc" vp-toc><!----><!--[--><div class="vp-toc-header">On This Page<button type="button" class="print-button" title="Print"><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="#database-management">DATABASE MANAGEMENT</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#create-database">Create Database</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#show-databases">Show Databases</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#delete-database">Delete Database</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#count-databases">Count Databases</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#setting-up-heterogeneous-databases-advanced-operations">Setting up heterogeneous databases (Advanced operations)</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#ttl">TTL</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#device-template">DEVICE TEMPLATE</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#create-device-template">Create Device Template</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#set-device-template">Set Device Template</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#activate-device-template">Activate Device Template</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#show-device-template">Show Device Template</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#deactivate-device-template">Deactivate Device Template</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#unset-device-template">Unset Device Template</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#drop-device-template">Drop Device Template</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#alter-device-template">Alter Device Template</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#timeseries-management">TIMESERIES MANAGEMENT</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#create-timeseries">Create Timeseries</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#create-aligned-timeseries">Create Aligned Timeseries</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#delete-timeseries">Delete Timeseries</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#show-timeseries">Show Timeseries</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#count-timeseries">Count Timeseries</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#tag-and-attribute-management">Tag and Attribute Management</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#node-management">NODE MANAGEMENT</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#show-child-paths">Show Child Paths</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#show-child-nodes">Show Child Nodes</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#count-nodes">Count Nodes</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#show-devices">Show Devices</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#count-devices">Count Devices</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#insert-load-data">INSERT & LOAD DATA</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#insert-data">Insert Data</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#load-external-tsfile-tool">Load External TsFile Tool</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#delete-data">DELETE DATA</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#delete-single-timeseries">Delete Single Timeseries</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#delete-multiple-timeseries">Delete Multiple Timeseries</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#delete-time-partition-experimental">Delete Time Partition (experimental)</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#query-data">QUERY DATA</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#basic-examples">Basic Examples</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#select-clause">SELECT CLAUSE</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#where-clause">WHERE CLAUSE</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#group-by-clause">GROUP BY CLAUSE</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#having-clause">HAVING CLAUSE</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#fill-clause">FILL CLAUSE</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#limit-and-slimit-clauses-pagination">LIMIT and SLIMIT CLAUSES (PAGINATION)</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#order-by-clause">ORDER BY CLAUSE</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#align-by-clause">ALIGN BY CLAUSE</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#into-clause-query-write-back">INTO CLAUSE (QUERY WRITE-BACK)</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#maintennance">Maintennance</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#operator">OPERATOR</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#arithmetic-operators">Arithmetic Operators</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#comparison-operators">Comparison Operators</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#logical-operators">Logical Operators</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#built-in-functions">BUILT-IN FUNCTIONS</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="#arithmetic-functions">Arithmetic Functions</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#comparison-functions">Comparison Functions</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#string-processing-functions">String Processing Functions</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#data-type-conversion-function">Data Type Conversion Function</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#constant-timeseries-generating-functions">Constant Timeseries Generating Functions</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#selector-functions">Selector Functions</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#continuous-interval-functions">Continuous Interval Functions</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#variation-trend-calculation-functions">Variation Trend Calculation Functions</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#sample-functions">Sample Functions</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#change-points-function">Change Points Function</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#data-quality-function-library">DATA QUALITY FUNCTION LIBRARY</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#data-quality">Data Quality</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#data-profiling">Data Profiling</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#anomaly-detection">Anomaly Detection</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#frequency-domain">Frequency Domain</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#data-matching">Data Matching</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#data-repairing">Data Repairing</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#series-discovery">Series Discovery</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#machine-learning">Machine Learning</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#lambda-expression">LAMBDA EXPRESSION</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#conditional-expression">CONDITIONAL EXPRESSION</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#trigger">TRIGGER</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#create-trigger">Create Trigger</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#drop-trigger">Drop Trigger</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#show-trigger">Show Trigger</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#continuous-query-cq">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="#configuring-execution-intervals">Configuring execution intervals</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#configuring-time-range-for-resampling">Configuring time range for resampling</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#configuring-execution-intervals-and-cq-time-ranges">Configuring execution intervals and CQ time ranges</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#configuring-end-time-offset-for-cq-time-range">Configuring end_time_offset for CQ time range</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#cq-without-group-by-clause">CQ without group by clause</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#cq-management">CQ Management</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#user-defined-function-udf">USER-DEFINED FUNCTION (UDF)</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#udf-registration">UDF Registration</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#udf-deregistration">UDF Deregistration</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#udf-queries">UDF Queries</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#show-all-registered-udfs">Show All Registered UDFs</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#administration-management">ADMINISTRATION MANAGEMENT</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#sql-statements">SQL Statements</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#authorization-and-deauthorization">Authorization and Deauthorization</a></li><!----><!--]--></ul></li><!--]--></ul><div class="vp-toc-marker" style="top:-1.7rem;"></div></div><!--]--><!----></aside></div><!----><div class="theme-hope-content" vp-content><h1 id="sql-manual" tabindex="-1"><a class="header-anchor" href="#sql-manual"><span>SQL Manual</span></a></h1><h2 id="database-management" tabindex="-1"><a class="header-anchor" href="#database-management"><span>DATABASE MANAGEMENT</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/Basic-Concept/Operate-Metadata.html">Operate-Metadata</a>.</p><h3 id="create-database" tabindex="-1"><a class="header-anchor" href="#create-database"><span>Create Database</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#C678DD;"> database</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#C678DD;"> database</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-databases" tabindex="-1"><a class="header-anchor" href="#show-databases"><span>Show Databases</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> SHOW DATABASES</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> SHOW DATABASES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.**</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="delete-database" tabindex="-1"><a class="header-anchor" href="#delete-database"><span>Delete Database</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> DELETE</span><span style="color:#C678DD;"> DATABASE</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> DELETE</span><span style="color:#C678DD;"> DATABASE</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span></span> |
| <span class="line"><span style="color:#ABB2BF;">// </span><span style="color:#C678DD;">delete</span><span style="color:#ABB2BF;"> all </span><span style="color:#C678DD;">data</span><span style="color:#ABB2BF;">, all timeseries </span><span style="color:#C678DD;">and</span><span style="color:#ABB2BF;"> all databases</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> DELETE</span><span style="color:#C678DD;"> DATABASE</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.**</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="count-databases" tabindex="-1"><a class="header-anchor" href="#count-databases"><span>Count Databases</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> count databases</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> count databases </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.*</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> count databases </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.*</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> count databases </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="setting-up-heterogeneous-databases-advanced-operations" tabindex="-1"><a class="header-anchor" href="#setting-up-heterogeneous-databases-advanced-operations"><span>Setting up heterogeneous databases (Advanced operations)</span></a></h3><h4 id="set-heterogeneous-parameters-when-creating-a-database" tabindex="-1"><a class="header-anchor" href="#set-heterogeneous-parameters-when-creating-a-database"><span>Set heterogeneous parameters when creating a Database</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#C678DD;"> DATABASE</span><span style="color:#61AFEF;"> root</span><span style="color:#ABB2BF;">.db </span><span style="color:#C678DD;">WITH</span><span style="color:#ABB2BF;"> SCHEMA_REPLICATION_FACTOR</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, DATA_REPLICATION_FACTOR</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, SCHEMA_REGION_GROUP_NUM</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, DATA_REGION_GROUP_NUM</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="adjust-heterogeneous-parameters-at-run-time" tabindex="-1"><a class="header-anchor" href="#adjust-heterogeneous-parameters-at-run-time"><span>Adjust heterogeneous parameters at run time</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#C678DD;"> DATABASE</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">db</span><span style="color:#C678DD;"> WITH</span><span style="color:#ABB2BF;"> SCHEMA_REGION_GROUP_NUM</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, DATA_REGION_GROUP_NUM</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="show-heterogeneous-databases" tabindex="-1"><a class="header-anchor" href="#show-heterogeneous-databases"><span>Show heterogeneous databases</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">SHOW DATABASES DETAILS</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="ttl" tabindex="-1"><a class="header-anchor" href="#ttl"><span>TTL</span></a></h3><h4 id="set-ttl" tabindex="-1"><a class="header-anchor" href="#set-ttl"><span>Set TTL</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> set</span><span style="color:#ABB2BF;"> ttl </span><span style="color:#C678DD;">to</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#D19A66;"> 3600000</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> set</span><span style="color:#ABB2BF;"> ttl </span><span style="color:#C678DD;">to</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.** </span><span style="color:#D19A66;">3600000</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> set</span><span style="color:#ABB2BF;"> ttl </span><span style="color:#C678DD;">to</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#D19A66;">3600000</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="unset-ttl" tabindex="-1"><a class="header-anchor" href="#unset-ttl"><span>Unset TTL</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> unset ttl </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> unset ttl </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.**</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> unset ttl </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.**</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="show-ttl" tabindex="-1"><a class="header-anchor" href="#show-ttl"><span>Show TTL</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> SHOW ALL TTL</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> SHOW TTL </span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> StorageGroupNames</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> SHOW DEVICES</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="device-template" tabindex="-1"><a class="header-anchor" href="#device-template"><span>DEVICE TEMPLATE</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/Basic-Concept/Operate-Metadata.html">Operate-Metadata</a>.</p><figure><img src="/img/%E6%A8%A1%E6%9D%BF.png" alt="img" tabindex="0" loading="lazy"><figcaption>img</figcaption></figure><figure><img src="/img/templateEN.jpg" alt="img" tabindex="0" loading="lazy"><figcaption>img</figcaption></figure><h3 id="create-device-template" tabindex="-1"><a class="header-anchor" href="#create-device-template"><span>Create Device Template</span></a></h3><p><strong>Example 1:</strong> Create a template containing two non-aligned timeseires</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" data-title="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#61AFEF;">IoTDB</span><span style="color:#ABB2BF;">> </span><span style="color:#98C379;">create</span><span style="color:#98C379;"> device</span><span style="color:#98C379;"> template</span><span style="color:#98C379;"> t1</span><span style="color:#ABB2BF;"> (temperature </span><span style="color:#98C379;">FLOAT</span><span style="color:#98C379;"> encoding=RLE,</span><span style="color:#98C379;"> status</span><span style="color:#98C379;"> BOOLEAN</span><span style="color:#98C379;"> encoding=PLAIN</span><span style="color:#98C379;"> compression=SNAPPY</span><span style="color:#ABB2BF;">)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p><strong>Example 2:</strong> Create a template containing a group of aligned timeseires</p><div class="language-shell line-numbers-mode" data-highlighter="shiki" data-ext="shell" data-title="shell" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#61AFEF;">IoTDB</span><span style="color:#ABB2BF;">> </span><span style="color:#98C379;">create</span><span style="color:#98C379;"> device</span><span style="color:#98C379;"> template</span><span style="color:#98C379;"> t2</span><span style="color:#98C379;"> aligned</span><span style="color:#ABB2BF;"> (lat </span><span style="color:#98C379;">FLOAT</span><span style="color:#98C379;"> encoding=Gorilla,</span><span style="color:#98C379;"> lon</span><span style="color:#98C379;"> FLOAT</span><span style="color:#98C379;"> encoding=Gorilla</span><span style="color:#ABB2BF;">)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>The<code> lat</code> and <code>lon</code> measurements are aligned.</p><h3 id="set-device-template" tabindex="-1"><a class="header-anchor" href="#set-device-template"><span>Set Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> set</span><span style="color:#ABB2BF;"> device template t1 </span><span style="color:#C678DD;">to</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="activate-device-template" tabindex="-1"><a class="header-anchor" href="#activate-device-template"><span>Activate Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> set</span><span style="color:#ABB2BF;"> device template t1 </span><span style="color:#C678DD;">to</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> set</span><span style="color:#ABB2BF;"> device template t2 </span><span style="color:#C678DD;">to</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#C678DD;">using</span><span style="color:#ABB2BF;"> device template </span><span style="color:#C678DD;">on</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#C678DD;">using</span><span style="color:#ABB2BF;"> device template </span><span style="color:#C678DD;">on</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d2</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-device-template" tabindex="-1"><a class="header-anchor" href="#show-device-template"><span>Show Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show device templates</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show nodes </span><span style="color:#C678DD;">in</span><span style="color:#ABB2BF;"> device template t1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show paths </span><span style="color:#C678DD;">set</span><span style="color:#ABB2BF;"> device template t1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show paths </span><span style="color:#C678DD;">using</span><span style="color:#ABB2BF;"> device template t1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="deactivate-device-template" tabindex="-1"><a class="header-anchor" href="#deactivate-device-template"><span>Deactivate Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#ABB2BF;"> timeseries of device template t1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> deactivate device template t1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#ABB2BF;"> timeseries of device template t1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.*, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg2</span><span style="color:#ABB2BF;">.*</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> deactivate device template t1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.*, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg2</span><span style="color:#ABB2BF;">.*</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="unset-device-template" tabindex="-1"><a class="header-anchor" href="#unset-device-template"><span>Unset Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> unset device template t1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="drop-device-template" tabindex="-1"><a class="header-anchor" href="#drop-device-template"><span>Drop Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> drop</span><span style="color:#ABB2BF;"> device template t1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="alter-device-template" tabindex="-1"><a class="header-anchor" href="#alter-device-template"><span>Alter Device Template</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> alter</span><span style="color:#ABB2BF;"> device template t1 </span><span style="color:#C678DD;">add</span><span style="color:#ABB2BF;"> (speed </span><span style="color:#C678DD;">FLOAT</span><span style="color:#C678DD;"> encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">RLE, </span><span style="color:#C678DD;">FLOAT</span><span style="color:#C678DD;"> TEXT</span><span style="color:#C678DD;"> encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN </span><span style="color:#C678DD;">compression</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">SNAPPY)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="timeseries-management" tabindex="-1"><a class="header-anchor" href="#timeseries-management"><span>TIMESERIES MANAGEMENT</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/Basic-Concept/Operate-Metadata.html">Operate-Metadata</a>.</p><h3 id="create-timeseries" tabindex="-1"><a class="header-anchor" href="#create-timeseries"><span>Create Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.temperature </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">RLE</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.hardware </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">TEXT</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.temperature </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">RLE</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>From v0.13, you can use a simplified version of the SQL statements to create timeseries:</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.temperature </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">RLE</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.hardware </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">TEXT</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.temperature </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">RLE</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Notice that when in the CREATE TIMESERIES statement the encoding method conflicts with the data type, the system gives the corresponding error prompt as shown below:</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> WITH</span><span style="color:#ABB2BF;"> DATATYPE</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">BOOLEAN</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">ENCODING</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">TS_2DIFF</span></span> |
| <span class="line"><span style="color:#ABB2BF;">error: </span><span style="color:#C678DD;">encoding</span><span style="color:#ABB2BF;"> TS_2DIFF does </span><span style="color:#C678DD;">not</span><span style="color:#ABB2BF;"> support </span><span style="color:#C678DD;">BOOLEAN</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="create-aligned-timeseries" tabindex="-1"><a class="header-anchor" href="#create-aligned-timeseries"><span>Create Aligned Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> CREATE</span><span style="color:#ABB2BF;"> ALIGNED TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">GPS</span><span style="color:#ABB2BF;">(latitude </span><span style="color:#C678DD;">FLOAT</span><span style="color:#C678DD;"> encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN compressor</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">SNAPPY, longitude </span><span style="color:#C678DD;">FLOAT</span><span style="color:#C678DD;"> encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">PLAIN compressor</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">SNAPPY)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="delete-timeseries" tabindex="-1"><a class="header-anchor" href="#delete-timeseries"><span>Delete Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.temperature, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.hardware</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.wf02.*</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> drop</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.wf02.*</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-timeseries" tabindex="-1"><a class="header-anchor" href="#show-timeseries"><span>Show Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show timeseries </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.**</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.**</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">limit</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">10</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> timeseries contains </span><span style="color:#98C379;">'wf01.wt'</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> dataType</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">FLOAT</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="count-timeseries" tabindex="-1"><a class="header-anchor" href="#count-timeseries"><span>Count Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.**</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.**</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*.</span><span style="color:#C678DD;">status</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> TIMESERIES contains </span><span style="color:#98C379;">'sgcc'</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> DATATYPE </span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;"> INT64</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> TAGS(unit) contains </span><span style="color:#98C379;">'c'</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> TAGS(unit) </span><span style="color:#56B6C2;">=</span><span style="color:#98C379;"> 'c'</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">WHERE</span><span style="color:#ABB2BF;"> TIMESERIES contains </span><span style="color:#98C379;">'sgcc'</span><span style="color:#C678DD;"> group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#C678DD;"> LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#C678DD;"> LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT TIMESERIES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.wf01.* </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#C678DD;"> LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span></span></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><h3 id="tag-and-attribute-management" tabindex="-1"><a class="header-anchor" href="#tag-and-attribute-management"><span>Tag and Attribute Management</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;">(temprature) </span><span style="color:#C678DD;">with</span><span style="color:#ABB2BF;"> datatype</span><span style="color:#56B6C2;">=</span><span style="color:#C678DD;">FLOAT</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">encoding</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">RLE, </span><span style="color:#C678DD;">compression</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">SNAPPY tags(tag1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v1, tag2</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v2) attributes(attr1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v1, attr2</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v2)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Rename the tag/attribute key</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;"> RENAME tag1 </span><span style="color:#C678DD;">TO</span><span style="color:#ABB2BF;"> newTag1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Reset the tag/attribute value</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#C678DD;"> SET</span><span style="color:#ABB2BF;"> newTag1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">newV1, attr1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">newV1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Delete the existing tag/attribute</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#C678DD;"> DROP</span><span style="color:#ABB2BF;"> tag1, tag2</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Add new tags</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#C678DD;"> ADD</span><span style="color:#ABB2BF;"> TAGS tag3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, tag4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Add new attributes</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#C678DD;"> ADD</span><span style="color:#ABB2BF;"> ATTRIBUTES attr3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, attr4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Upsert alias, tags and attributes</li></ul><blockquote><p>add alias or a new key-value if the alias or key doesn't exist, otherwise, update the old one with new value.</p></blockquote><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">turbine</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;"> UPSERT ALIAS</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">newAlias TAGS(tag3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, tag4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4) ATTRIBUTES(attr3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, attr4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Show timeseries using tags. Use TAGS(tagKey) to identify the tags used as filter key</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">SHOW TIMESERIES (</span><span style="color:#56B6C2;"><</span><span style="color:#98C379;">`PathPattern`</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">)? timeseriesWhereClause</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>returns all the timeseries information that satisfy the where condition and match the pathPattern. SQL statements are as follows:</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.hardware </span><span style="color:#C678DD;">ADD</span><span style="color:#ABB2BF;"> TAGS unit</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">c</span></span> |
| <span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> ADD</span><span style="color:#ABB2BF;"> TAGS </span><span style="color:#C678DD;">description</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">test1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> TAGS(unit)</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'c'</span></span> |
| <span class="line"><span style="color:#ABB2BF;">show timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> TAGS(</span><span style="color:#C678DD;">description</span><span style="color:#ABB2BF;">) contains </span><span style="color:#98C379;">'test1'</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>count timeseries using tags</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES (</span><span style="color:#56B6C2;"><</span><span style="color:#98C379;">`PathPattern`</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">)? timeseriesWhereClause</span></span> |
| <span class="line"><span style="color:#ABB2BF;">COUNT TIMESERIES (</span><span style="color:#56B6C2;"><</span><span style="color:#98C379;">`PathPattern`</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">)? timeseriesWhereClause </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#C678DD;"> LEVEL</span><span style="color:#56B6C2;">=<</span><span style="color:#C678DD;">INTEGER</span><span style="color:#56B6C2;">></span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><p>returns all the number of timeseries that satisfy the where condition and match the pathPattern. SQL statements are as follows:</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">count timeseries</span></span> |
| <span class="line"><span style="color:#ABB2BF;">count timeseries </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> TAGS(unit)</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'c'</span></span> |
| <span class="line"><span style="color:#ABB2BF;">count timeseries </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> TAGS(unit)</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'c'</span><span style="color:#C678DD;"> group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 2</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>create aligned timeseries</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">create</span><span style="color:#ABB2BF;"> aligned timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1(s1 INT32 tags(tag1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v1, tag2</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v2) attributes(attr1</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v1, attr2</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v2), s2 DOUBLE tags(tag3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, tag4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4) attributes(attr3</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v3, attr4</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">v4))</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>The execution result is as follows:</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show timeseries</span></span> |
| <span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span></span> |
| <span class="line"><span style="color:#ABB2BF;">| timeseries|alias| </span><span style="color:#C678DD;">database</span><span style="color:#ABB2BF;">|dataType|</span><span style="color:#C678DD;">encoding</span><span style="color:#ABB2BF;">|</span><span style="color:#C678DD;">compression</span><span style="color:#ABB2BF;">| tags| attributes|deadband|deadband parameters|</span></span> |
| <span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span></span> |
| <span class="line"><span style="color:#ABB2BF;">|</span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">| INT32| RLE| SNAPPY|{</span><span style="color:#98C379;">"tag1"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v1"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"tag2"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v2"</span><span style="color:#ABB2BF;">}|{</span><span style="color:#98C379;">"attr2"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v2"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"attr1"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v1"</span><span style="color:#ABB2BF;">}| </span><span style="color:#C678DD;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">null</span><span style="color:#ABB2BF;">|</span></span> |
| <span class="line"><span style="color:#ABB2BF;">|</span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s2</span><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">| DOUBLE| GORILLA| SNAPPY|{</span><span style="color:#98C379;">"tag4"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v4"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"tag3"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v3"</span><span style="color:#ABB2BF;">}|{</span><span style="color:#98C379;">"attr4"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v4"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"attr3"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v3"</span><span style="color:#ABB2BF;">}| </span><span style="color:#C678DD;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">null</span><span style="color:#ABB2BF;">|</span></span> |
| <span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>Support query：</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show timeseries </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> TAGS(tag1)</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'v1'</span></span> |
| <span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span></span> |
| <span class="line"><span style="color:#ABB2BF;">| timeseries|alias| </span><span style="color:#C678DD;">database</span><span style="color:#ABB2BF;">|dataType|</span><span style="color:#C678DD;">encoding</span><span style="color:#ABB2BF;">|</span><span style="color:#C678DD;">compression</span><span style="color:#ABB2BF;">| tags| attributes|deadband|deadband parameters|</span></span> |
| <span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span></span> |
| <span class="line"><span style="color:#ABB2BF;">|</span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">| INT32| RLE| SNAPPY|{</span><span style="color:#98C379;">"tag1"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v1"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"tag2"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v2"</span><span style="color:#ABB2BF;">}|{</span><span style="color:#98C379;">"attr2"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v2"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"attr1"</span><span style="color:#ABB2BF;">:</span><span style="color:#98C379;">"v1"</span><span style="color:#ABB2BF;">}| </span><span style="color:#C678DD;">null</span><span style="color:#ABB2BF;">| </span><span style="color:#C678DD;">null</span><span style="color:#ABB2BF;">|</span></span> |
| <span class="line"><span style="color:#ABB2BF;">+</span><span style="color:#7F848E;font-style:italic;">--------------+-----+-------------+--------+--------+-----------+-------------------------+---------------------------+--------+-------------------+</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>The above operations are supported for timeseries tag, attribute updates, etc.</p><h2 id="node-management" tabindex="-1"><a class="header-anchor" href="#node-management"><span>NODE MANAGEMENT</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/Basic-Concept/Operate-Metadata.html">Operate-Metadata</a>.</p><h3 id="show-child-paths" tabindex="-1"><a class="header-anchor" href="#show-child-paths"><span>Show Child Paths</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">SHOW CHILD PATHS pathPattern</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="show-child-nodes" tabindex="-1"><a class="header-anchor" href="#show-child-nodes"><span>Show Child Nodes</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">SHOW CHILD NODES pathPattern</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="count-nodes" tabindex="-1"><a class="header-anchor" href="#count-nodes"><span>Count Nodes</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT NODES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT NODES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT NODES </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.wf01.** </span><span style="color:#C678DD;">LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">3</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> COUNT NODES </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.**.temperature </span><span style="color:#C678DD;">LEVEL</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">3</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-devices" tabindex="-1"><a class="header-anchor" href="#show-devices"><span>Show Devices</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show devices</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show devices </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.**</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show devices </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> device contains </span><span style="color:#98C379;">'t'</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show devices </span><span style="color:#C678DD;">with</span><span style="color:#C678DD;"> database</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show devices </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">with</span><span style="color:#C678DD;"> database</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="count-devices" tabindex="-1"><a class="header-anchor" href="#count-devices"><span>Count Devices</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> show devices</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> count devices</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> count devices </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.**</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="insert-load-data" tabindex="-1"><a class="header-anchor" href="#insert-load-data"><span>INSERT & LOAD DATA</span></a></h2><h3 id="insert-data" tabindex="-1"><a class="header-anchor" href="#insert-data"><span>Insert Data</span></a></h3><p>For more details, see document <a href="../Basic-Concept/Write-Data">Write-Data</a>.</p><h4 id="use-of-insert-statements" tabindex="-1"><a class="header-anchor" href="#use-of-insert-statements"><span>Use of INSERT Statements</span></a></h4><ul><li>Insert Single Timeseries</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">timestamp</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,true)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">timestamp</span><span style="color:#ABB2BF;">,hardware) </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'v1'</span><span style="color:#ABB2BF;">)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Insert Multiple Timeseries</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">timestamp</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">, hardware) </span><span style="color:#C678DD;">VALUES</span><span style="color:#ABB2BF;"> (</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">, false, </span><span style="color:#98C379;">'v2'</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">timestamp</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">, hardware) </span><span style="color:#C678DD;">VALUES</span><span style="color:#ABB2BF;"> (</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, false, </span><span style="color:#98C379;">'v3'</span><span style="color:#ABB2BF;">),(</span><span style="color:#D19A66;">4</span><span style="color:#ABB2BF;">, true, </span><span style="color:#98C379;">'v4'</span><span style="color:#ABB2BF;">)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Use the Current System Timestamp as the Timestamp of the Data Point</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">, hardware) </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;"> (false, </span><span style="color:#98C379;">'v2'</span><span style="color:#ABB2BF;">)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="insert-data-into-aligned-timeseries" tabindex="-1"><a class="header-anchor" href="#insert-data-into-aligned-timeseries"><span>Insert Data Into Aligned Timeseries</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> create</span><span style="color:#ABB2BF;"> aligned timeseries </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1(s1 INT32, s2 DOUBLE)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1(</span><span style="color:#C678DD;">time</span><span style="color:#ABB2BF;">, s1, s2) aligned </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> insert into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1(</span><span style="color:#C678DD;">time</span><span style="color:#ABB2BF;">, s1, s2) aligned </span><span style="color:#C678DD;">values</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">), (</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="load-external-tsfile-tool" tabindex="-1"><a class="header-anchor" href="#load-external-tsfile-tool"><span>Load External TsFile Tool</span></a></h3><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/Tools-System/Data-Import-Tool.html">Data Import</a>.</p><h4 id="load-with-sql" tabindex="-1"><a class="header-anchor" href="#load-with-sql"><span>Load with SQL</span></a></h4><ol><li>Load a single tsfile by specifying a file path (absolute path).</li></ol><ul><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile'</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' sglevel=1</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' onSuccess=delete</code></li><li><code>load '/Users/Desktop/data/1575028885956-101-0.tsfile' sglevel=1 onSuccess=delete</code></li></ul><ol start="2"><li>Load a batch of files by specifying a folder path (absolute path).</li></ol><ul><li><code>load '/Users/Desktop/data'</code></li><li><code>load '/Users/Desktop/data' sglevel=1</code></li><li><code>load '/Users/Desktop/data' onSuccess=delete</code></li><li><code>load '/Users/Desktop/data' sglevel=1 onSuccess=delete</code></li></ul><h4 id="load-with-script" tabindex="-1"><a class="header-anchor" href="#load-with-script"><span>Load with Script</span></a></h4><div class="language- line-numbers-mode" data-highlighter="shiki" data-ext="" data-title="" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span>./load-rewrite.bat -f D:\IoTDB\data -h 192.168.0.101 -p 6667 -u root -pw root</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="delete-data" tabindex="-1"><a class="header-anchor" href="#delete-data"><span>DELETE DATA</span></a></h2><p>For more details, see document <a href="../Basic-Concept/Write-Data">Write-Delete-Data</a>.</p><h3 id="delete-single-timeseries" tabindex="-1"><a class="header-anchor" href="#delete-single-timeseries"><span>Delete Single Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 10</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 10</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 20</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 10</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 20</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 10</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 20</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 20</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 20</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 4</span><span style="color:#C678DD;"> or</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 0</span></span> |
| <span class="line"><span style="color:#ABB2BF;">Msg: </span><span style="color:#D19A66;">303</span><span style="color:#ABB2BF;">: </span><span style="color:#C678DD;">Check</span><span style="color:#ABB2BF;"> metadata error: </span><span style="color:#C678DD;">For</span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> statement</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> clause can only contain </span><span style="color:#C678DD;">atomic</span></span> |
| <span class="line"><span style="color:#ABB2BF;">expressions </span><span style="color:#C678DD;">like</span><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> ></span><span style="color:#ABB2BF;"> XXX, </span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> <=</span><span style="color:#ABB2BF;"> XXX, </span><span style="color:#C678DD;">or</span><span style="color:#ABB2BF;"> two </span><span style="color:#C678DD;">atomic</span><span style="color:#ABB2BF;"> expressions connected </span><span style="color:#C678DD;">by</span><span style="color:#98C379;"> 'AND'</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="delete-multiple-timeseries" tabindex="-1"><a class="header-anchor" href="#delete-multiple-timeseries"><span>Delete Multiple Timeseries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.* </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">26</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> delete</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#C678DD;"> now</span><span style="color:#ABB2BF;">()</span></span> |
| <span class="line"><span style="color:#ABB2BF;">Msg: The </span><span style="color:#C678DD;">statement</span><span style="color:#C678DD;"> is</span><span style="color:#ABB2BF;"> executed successfully.</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="delete-time-partition-experimental" tabindex="-1"><a class="header-anchor" href="#delete-time-partition-experimental"><span>Delete Time Partition (experimental)</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> DELETE</span><span style="color:#C678DD;"> PARTITION</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#D19A66;"> 0</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">2</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="query-data" tabindex="-1"><a class="header-anchor" href="#query-data"><span>QUERY DATA</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/Basic-Concept/Query-Data.html">Query-Data</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#E06C75;"> [LAST]</span><span style="color:#ABB2BF;"> selectExpr </span><span style="color:#E06C75;">[, selectExpr]</span><span style="color:#ABB2BF;"> ...</span></span> |
| <span class="line"><span style="color:#E06C75;"> [INTO intoItem [, intoItem]</span><span style="color:#ABB2BF;"> ...]</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#ABB2BF;"> prefixPath </span><span style="color:#E06C75;">[, prefixPath]</span><span style="color:#ABB2BF;"> ...</span></span> |
| <span class="line"><span style="color:#E06C75;"> [WHERE whereCondition]</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> [</span><span style="color:#C678DD;">GROUP BY</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> (</span><span style="color:#E06C75;">[startTime, endTime), interval [, slidingStep]</span><span style="color:#ABB2BF;">) |</span></span> |
| <span class="line"><span style="color:#C678DD;"> LEVEL</span><span style="color:#56B6C2;"> =</span><span style="color:#ABB2BF;"> levelNum </span><span style="color:#E06C75;">[, levelNum]</span><span style="color:#ABB2BF;"> ... |</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> TAGS(tagKey </span><span style="color:#E06C75;">[, tagKey]</span><span style="color:#ABB2BF;"> ... ) |</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> VARIATION(expression</span><span style="color:#E06C75;">[,delta][,ignoreNull=true/false]</span><span style="color:#ABB2BF;">) |</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> CONDITION(expression,</span><span style="color:#E06C75;">[keep>/>=/=/</<=]</span><span style="color:#ABB2BF;">threshold</span><span style="color:#E06C75;">[,ignoreNull=true/false]</span><span style="color:#ABB2BF;">) |</span></span> |
| <span class="line"><span style="color:#C678DD;"> SESSION</span><span style="color:#ABB2BF;">(timeInterval) |</span></span> |
| <span class="line"><span style="color:#56B6C2;"> COUNT</span><span style="color:#ABB2BF;">(expression, </span><span style="color:#C678DD;">size</span><span style="color:#E06C75;">[,ignoreNull=true/false]</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> }]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [HAVING havingCondition]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [ORDER BY sortKey {ASC | DESC}]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [FILL ({PREVIOUS | LINEAR | constant} (, interval=DURATION_LITERAL)?)]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [SLIMIT seriesLimit]</span><span style="color:#E06C75;"> [SOFFSET seriesOffset]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [LIMIT rowLimit]</span><span style="color:#E06C75;"> [OFFSET rowOffset]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [ALIGN BY {TIME | DEVICE}]</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="basic-examples" tabindex="-1"><a class="header-anchor" href="#basic-examples"><span>Basic Examples</span></a></h3><h4 id="select-a-column-of-data-based-on-a-time-interval" tabindex="-1"><a class="header-anchor" href="#select-a-column-of-data-based-on-a-time-interval"><span>Select a Column of Data Based on a Time Interval</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="select-multiple-columns-of-data-based-on-a-time-interval" tabindex="-1"><a class="header-anchor" href="#select-multiple-columns-of-data-based-on-a-time-interval"><span>Select Multiple Columns of Data Based on a Time Interval</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">, temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="select-multiple-columns-of-data-for-the-same-device-according-to-multiple-time-intervals" tabindex="-1"><a class="header-anchor" href="#select-multiple-columns-of-data-for-the-same-device-according-to-multiple-time-intervals"><span>Select Multiple Columns of Data for the Same Device According to Multiple Time Intervals</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">,temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">or</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">35</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="choose-multiple-columns-of-data-for-different-devices-according-to-multiple-time-intervals" tabindex="-1"><a class="header-anchor" href="#choose-multiple-columns-of-data-for-different-devices-according-to-multiple-time-intervals"><span>Choose Multiple Columns of Data for Different Devices According to Multiple Time Intervals</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#D19A66;"> wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">.hardware </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#C678DD;"> where</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">or</span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">35</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="order-by-time-query" tabindex="-1"><a class="header-anchor" href="#order-by-time-query"><span>Order By Time Query</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> order by</span><span style="color:#C678DD;"> time</span><span style="color:#C678DD;"> desc</span><span style="color:#C678DD;"> limit</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="select-clause" tabindex="-1"><a class="header-anchor" href="#select-clause"><span><code>SELECT</code> CLAUSE</span></a></h3><h4 id="use-alias" tabindex="-1"><a class="header-anchor" href="#use-alias"><span>Use Alias</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> s1 </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> temperature, s2 </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> speed </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="nested-expressions" tabindex="-1"><a class="header-anchor" href="#nested-expressions"><span>Nested Expressions</span></a></h4><h5 id="nested-expressions-with-time-series-query" tabindex="-1"><a class="header-anchor" href="#nested-expressions-with-time-series-query"><span>Nested Expressions with Time Series Query</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> a,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> b,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ((a + </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">) * </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;"> - </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">) % </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;"> + </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#56B6C2;"> sin</span><span style="color:#ABB2BF;">(a + </span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(a + </span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(b))),</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> -(a + b) * (</span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(a + b) * </span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(a + b) + </span><span style="color:#56B6C2;">cos</span><span style="color:#ABB2BF;">(a + b) * </span><span style="color:#56B6C2;">cos</span><span style="color:#ABB2BF;">(a + b)) + </span><span style="color:#D19A66;">1</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> (a + b) * </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;"> + </span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(a) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> (a + *) / </span><span style="color:#D19A66;">2</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> (a + b) * </span><span style="color:#D19A66;">3</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h5 id="nested-expressions-query-with-aggregations" tabindex="-1"><a class="header-anchor" href="#nested-expressions-query-with-aggregations"><span>Nested Expressions query with aggregations</span></a></h5><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> sin</span><span style="color:#ABB2BF;">(</span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(temperature)),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) + </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> -</span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(hardware),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) + </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(hardware)</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(*), </span></span> |
| <span class="line"><span style="color:#ABB2BF;"> (</span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(*) + </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">) * </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;"> / </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;"> -</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> sin</span><span style="color:#ABB2BF;">(</span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(temperature)),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) + </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> -</span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(hardware),</span></span> |
| <span class="line"><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) + </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(hardware) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> custom_sum</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span></span> |
| <span class="line"><span style="color:#C678DD;">GROUP BY</span><span style="color:#ABB2BF;">([</span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">90</span><span style="color:#ABB2BF;">), 10ms);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="last-query" tabindex="-1"><a class="header-anchor" href="#last-query"><span>Last Query</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#C678DD;"> last</span><span style="color:#C678DD;"> status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#C678DD;"> last</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">, temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">50</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#C678DD;"> last</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> order by</span><span style="color:#ABB2BF;"> timeseries </span><span style="color:#C678DD;">desc</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#C678DD;"> last</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> order by</span><span style="color:#ABB2BF;"> dataType </span><span style="color:#C678DD;">desc</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="where-clause" tabindex="-1"><a class="header-anchor" href="#where-clause"><span><code>WHERE</code> CLAUSE</span></a></h3><h4 id="time-filter" tabindex="-1"><a class="header-anchor" href="#time-filter"><span>Time Filter</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> s1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2022</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> s1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 2022</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> s1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2022</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="value-filter" tabindex="-1"><a class="header-anchor" href="#value-filter"><span>Value Filter</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 36</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#C678DD;"> status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> status</span><span style="color:#56B6C2;"> =</span><span style="color:#ABB2BF;"> true;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">between</span><span style="color:#D19A66;"> 36</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#C678DD;"> and</span><span style="color:#D19A66;"> 40</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">not</span><span style="color:#C678DD;"> between</span><span style="color:#D19A66;"> 36</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#C678DD;"> and</span><span style="color:#D19A66;"> 40</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">in</span><span style="color:#ABB2BF;"> (</span><span style="color:#98C379;">'200'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'300'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'400'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'500'</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">not</span><span style="color:#C678DD;"> in</span><span style="color:#ABB2BF;"> (</span><span style="color:#98C379;">'200'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'300'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'400'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'500'</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">is</span><span style="color:#C678DD;"> null</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">is not null</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="fuzzy-query" tabindex="-1"><a class="header-anchor" href="#fuzzy-query"><span>Fuzzy Query</span></a></h4><ul><li>Fuzzy matching using <code>Like</code></li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#C678DD;"> like</span><span style="color:#98C379;"> '%cc%'</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.device </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#C678DD;"> like</span><span style="color:#98C379;"> '_b_'</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Fuzzy matching using <code>Regexp</code></li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#ABB2BF;"> regexp </span><span style="color:#98C379;">'^[A-Za-z]+$'</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#ABB2BF;"> regexp </span><span style="color:#98C379;">'^[a-z]+$'</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 100</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="group-by-clause" tabindex="-1"><a class="header-anchor" href="#group-by-clause"><span><code>GROUP BY</code> CLAUSE</span></a></h3><ul><li>Aggregate By Time without Specifying the Sliding Step Length</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">), max_value(temperature) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">),1d);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Aggregate By Time Specifying the Sliding Step Length</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">), max_value(temperature) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">07</span><span style="color:#D19A66;"> 23</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">), 3h, 1d);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Aggregate by Natural Month</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;">([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2019</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">), 1mo, 2mo);</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;">([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">-31T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2019</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">), 1mo, 2mo);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Left Open And Right Close Range</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ((</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">],1d);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Aggregation By Variation</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> __endTime, </span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s2), </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> variation(s6)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> __endTime, </span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s2), </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> variation(s6, ignoreNull</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">false)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> __endTime, </span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s2), </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> variation(s6, </span><span style="color:#D19A66;">4</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> __endTime, </span><span style="color:#56B6C2;">avg</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s2), </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> variation(s6+s5, </span><span style="color:#D19A66;">10</span><span style="color:#ABB2BF;">)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregation By Condition</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> max_time(charging_status),</span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(vehicle_status),</span><span style="color:#56B6C2;">last_value</span><span style="color:#ABB2BF;">(soc) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> condition(charging_status</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">KEEP</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">,ignoringNull</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">true)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> max_time(charging_status),</span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(vehicle_status),</span><span style="color:#56B6C2;">last_value</span><span style="color:#ABB2BF;">(soc) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> condition(charging_status</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">KEEP</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">,ignoringNull</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">false)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregation By Session</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> __endTime,</span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(*) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> session</span><span style="color:#ABB2BF;">(1d)</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> __endTime,</span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(hardware) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#C678DD;"> session</span><span style="color:#ABB2BF;">(50s) </span><span style="color:#C678DD;">having</span><span style="color:#56B6C2;"> sum</span><span style="color:#ABB2BF;">(hardware)</span><span style="color:#56B6C2;">></span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregation By Count</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(charging_stauts), </span><span style="color:#56B6C2;">first_value</span><span style="color:#ABB2BF;">(soc) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#C678DD;"> group by</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(charging_status,</span><span style="color:#D19A66;">5</span><span style="color:#ABB2BF;">) </span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(charging_stauts), </span><span style="color:#56B6C2;">first_value</span><span style="color:#ABB2BF;">(soc) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#C678DD;"> group by</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(charging_status,</span><span style="color:#D19A66;">5</span><span style="color:#ABB2BF;">,ignoreNull</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">false)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregation By Level</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 3</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> max_value(temperature) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 0</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(*) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#C678DD;"> level</span><span style="color:#56B6C2;"> =</span><span style="color:#D19A66;"> 2</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregate By Time with Level Clause</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ((</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">],1d), </span><span style="color:#C678DD;">level</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">07</span><span style="color:#D19A66;"> 23</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">), 3h, 1d), </span><span style="color:#C678DD;">level</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Aggregation query by one single tag</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> SELECT</span><span style="color:#56B6C2;"> AVG</span><span style="color:#ABB2BF;">(temperature) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">factory1</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#ABB2BF;"> TAGS(city);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Aggregation query by multiple tags</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> SELECT</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">factory1</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#ABB2BF;"> TAGS(city, workshop);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Downsampling Aggregation by tags based on Time Window</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> SELECT</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(temperature) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">factory1</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">GROUP BY</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1000</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">10000</span><span style="color:#ABB2BF;">), 5s), TAGS(city, workshop);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="having-clause" tabindex="-1"><a class="header-anchor" href="#having-clause"><span><code>HAVING</code> CLAUSE</span></a></h3><p>Correct:</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">),2ms), </span><span style="color:#C678DD;">level</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#C678DD;"> having</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">),2ms) </span><span style="color:#C678DD;">having</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 1</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><p>Incorrect:</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">),1ms) </span><span style="color:#C678DD;">having</span><span style="color:#56B6C2;"> sum</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> s1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">),1ms) </span><span style="color:#C678DD;">having</span><span style="color:#ABB2BF;"> s1 </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">),1ms), </span><span style="color:#C678DD;">level</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#C678DD;"> having</span><span style="color:#56B6C2;"> sum</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;">) </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">),1ms), </span><span style="color:#C678DD;">level</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#C678DD;"> having</span><span style="color:#56B6C2;"> sum</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="fill-clause" tabindex="-1"><a class="header-anchor" href="#fill-clause"><span><code>FILL</code> CLAUSE</span></a></h3><h4 id="previous-fill" tabindex="-1"><a class="header-anchor" href="#previous-fill"><span><code>PREVIOUS</code> Fill</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> temperature, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">40</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> fill(previous);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="previous-fill-and-specify-the-fill-timeout-threshold" tabindex="-1"><a class="header-anchor" href="#previous-fill-and-specify-the-fill-timeout-threshold"><span><code>PREVIOUS</code> FILL and specify the fill timeout threshold</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">40</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> fill(previous, 2m);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="linear-fill" tabindex="-1"><a class="header-anchor" href="#linear-fill"><span><code>LINEAR</code> Fill</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> temperature, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">40</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> fill(linear);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="constant-fill" tabindex="-1"><a class="header-anchor" href="#constant-fill"><span>Constant Fill</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> temperature, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">40</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> fill(</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> temperature, </span><span style="color:#C678DD;">status</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sgcc</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf03</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> >=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">37</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T16:</span><span style="color:#D19A66;">40</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> fill(true);</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="limit-and-slimit-clauses-pagination" tabindex="-1"><a class="header-anchor" href="#limit-and-slimit-clauses-pagination"><span><code>LIMIT</code> and <code>SLIMIT</code> CLAUSES (PAGINATION)</span></a></h3><h4 id="row-control-over-query-results" tabindex="-1"><a class="header-anchor" href="#row-control-over-query-results"><span>Row Control over Query Results</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">, temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> limit</span><span style="color:#D19A66;"> 10</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">, temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> limit</span><span style="color:#D19A66;"> 5</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">3</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#C678DD;"> status</span><span style="color:#ABB2BF;">,temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> limit</span><span style="color:#D19A66;"> 2</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">3</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">), max_value(temperature) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">),1d) </span><span style="color:#C678DD;">limit</span><span style="color:#D19A66;"> 5</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">3</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="column-control-over-query-results" tabindex="-1"><a class="header-anchor" href="#column-control-over-query-results"><span>Column Control over Query Results</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> slimit </span><span style="color:#D19A66;">1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">05</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;"> slimit </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;"> soffset </span><span style="color:#D19A66;">1</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> max_value(*) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-07T23:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">),1d) slimit </span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;"> soffset </span><span style="color:#D19A66;">1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="row-and-column-control-over-query-results" tabindex="-1"><a class="header-anchor" href="#row-and-column-control-over-query-results"><span>Row and Column Control over Query Results</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#C678DD;"> limit</span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">100</span><span style="color:#ABB2BF;"> slimit </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;"> soffset </span><span style="color:#D19A66;">0</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="order-by-clause" tabindex="-1"><a class="header-anchor" href="#order-by-clause"><span><code>ORDER BY</code> CLAUSE</span></a></h3><h4 id="order-by-in-align-by-time-mode" tabindex="-1"><a class="header-anchor" href="#order-by-in-align-by-time-mode"><span>Order by in ALIGN BY TIME mode</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> order by</span><span style="color:#C678DD;"> time</span><span style="color:#C678DD;"> desc</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="order-by-in-align-by-device-mode" tabindex="-1"><a class="header-anchor" href="#order-by-in-align-by-device-mode"><span>Order by in ALIGN BY DEVICE mode</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> order by</span><span style="color:#ABB2BF;"> device </span><span style="color:#C678DD;">desc</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">time</span><span style="color:#C678DD;"> asc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#C678DD;"> order by</span><span style="color:#C678DD;"> time</span><span style="color:#C678DD;"> asc</span><span style="color:#ABB2BF;">,device </span><span style="color:#C678DD;">desc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(*) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ((</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">+</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">,</span><span style="color:#D19A66;">2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">03</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">000</span><span style="color:#ABB2BF;">+</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">],1m) </span><span style="color:#C678DD;">order by</span><span style="color:#ABB2BF;"> device </span><span style="color:#C678DD;">asc</span><span style="color:#ABB2BF;">,</span><span style="color:#C678DD;">time</span><span style="color:#C678DD;"> asc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="order-by-arbitrary-expressions" tabindex="-1"><a class="header-anchor" href="#order-by-arbitrary-expressions"><span>Order by arbitrary expressions</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> score </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">order by</span><span style="color:#ABB2BF;"> score </span><span style="color:#C678DD;">desc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> score,total </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">one</span><span style="color:#C678DD;"> order by</span><span style="color:#ABB2BF;"> base+score+bonus </span><span style="color:#C678DD;">desc</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> score,total </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">one</span><span style="color:#C678DD;"> order by</span><span style="color:#ABB2BF;"> total </span><span style="color:#C678DD;">desc</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> base, score, bonus, total </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">order by</span><span style="color:#ABB2BF;"> total </span><span style="color:#C678DD;">desc</span><span style="color:#C678DD;"> NULLS</span><span style="color:#C678DD;"> Last</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> score </span><span style="color:#C678DD;">desc</span><span style="color:#C678DD;"> NULLS</span><span style="color:#C678DD;"> Last</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> bonus </span><span style="color:#C678DD;">desc</span><span style="color:#C678DD;"> NULLS</span><span style="color:#C678DD;"> Last</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#C678DD;"> time</span><span style="color:#C678DD;"> desc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> min_value(total) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">order by</span><span style="color:#ABB2BF;"> min_value(total) </span><span style="color:#C678DD;">asc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> min_value(total),max_value(base) </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">order by</span><span style="color:#ABB2BF;"> max_value(total) </span><span style="color:#C678DD;">desc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> score </span><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">order by</span><span style="color:#ABB2BF;"> device </span><span style="color:#C678DD;">asc</span><span style="color:#ABB2BF;">, score </span><span style="color:#C678DD;">desc</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">time</span><span style="color:#C678DD;"> asc</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="align-by-clause" tabindex="-1"><a class="header-anchor" href="#align-by-clause"><span><code>ALIGN BY</code> CLAUSE</span></a></h3><h4 id="align-by-device" tabindex="-1"><a class="header-anchor" href="#align-by-device"><span>Align by Device</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2017</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">11</span><span style="color:#ABB2BF;">-01T00:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="into-clause-query-write-back" tabindex="-1"><a class="header-anchor" href="#into-clause-query-write-back"><span><code>INTO</code> CLAUSE (QUERY WRITE-BACK)</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> s1, s2 </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(t1), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(t1, t2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(t2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(s1 + s2), </span><span style="color:#56B6C2;">last_value</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">agg</span><span style="color:#ABB2BF;">.</span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s1_add_s2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">agg</span><span style="color:#ABB2BF;">.</span><span style="color:#56B6C2;">last_value</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">group by</span><span style="color:#ABB2BF;"> ([</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">100</span><span style="color:#ABB2BF;">), 10ms);</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> s1, s2 </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(t1, t2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(t1, t2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2 align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> s1 + s2 </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">expr</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">add</span><span style="color:#ABB2BF;">(d1s1_d1s2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">expr</span><span style="color:#ABB2BF;">.</span><span style="color:#C678DD;">add</span><span style="color:#ABB2BF;">(d2s1_d2s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2 align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Using variable placeholders:</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> s1, s2</span></span> |
| <span class="line"><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(::), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(s1), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(${</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">}), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(::)</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#D19A66;"> d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s1</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">d1</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s2</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">d2</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s3</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">d3</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">s4</span></span> |
| <span class="line"><span style="color:#C678DD;">into</span><span style="color:#ABB2BF;"> ::(s1_1, s2_2), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2_2(s3_3), </span><span style="color:#C678DD;">root</span><span style="color:#ABB2BF;">.${</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">}_copy.::(s4)</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_bk</span><span style="color:#ABB2BF;">.::(::) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.**;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> s1, s2, s3, s4</span></span> |
| <span class="line"><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">backup_sg</span><span style="color:#ABB2BF;">.d1(s1, s2, s3, s4), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">backup_sg</span><span style="color:#ABB2BF;">.d2(::), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d3(backup_${</span><span style="color:#D19A66;">4</span><span style="color:#ABB2BF;">})</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d3</span></span> |
| <span class="line"><span style="color:#ABB2BF;">align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#56B6C2;"> avg</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s2) + </span><span style="color:#56B6C2;">sum</span><span style="color:#ABB2BF;">(s3), </span><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(s4)</span></span> |
| <span class="line"><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">agg_</span><span style="color:#ABB2BF;">${</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">}.::(avg_s1, sum_s2_add_s3, count_s4)</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.**</span></span> |
| <span class="line"><span style="color:#ABB2BF;">align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">into</span><span style="color:#ABB2BF;"> ::(backup_${</span><span style="color:#D19A66;">4</span><span style="color:#ABB2BF;">}) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.** align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> select</span><span style="color:#ABB2BF;"> s1, s2 </span><span style="color:#C678DD;">into</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d1(t1, t2), aligned </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg_copy</span><span style="color:#ABB2BF;">.d2(t1, t2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2 align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="maintennance" tabindex="-1"><a class="header-anchor" href="#maintennance"><span>Maintennance</span></a></h2><p>Generate the corresponding query plan:</p><div class="language- line-numbers-mode" data-highlighter="shiki" data-ext="" data-title="" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span>explain select s1,s2 from root.sg.d1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>Execute the corresponding SQL, analyze the execution and output:</p><div class="language- line-numbers-mode" data-highlighter="shiki" data-ext="" data-title="" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span>explain analyze select s1,s2 from root.sg.d1 order by s1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="operator" tabindex="-1"><a class="header-anchor" href="#operator"><span>OPERATOR</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html">Operator-and-Expression</a>.</p><h3 id="arithmetic-operators" tabindex="-1"><a class="header-anchor" href="#arithmetic-operators"><span>Arithmetic Operators</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#arithmetic-operators">Arithmetic Operators and Functions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, - s1, s2, + s2, s1 + s2, s1 - s2, s1 * s2, s1 / s2, s1 % s2 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="comparison-operators" tabindex="-1"><a class="header-anchor" href="#comparison-operators"><span>Comparison Operators</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#comparison-operators">Comparison Operators and Functions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Basic</span><span style="color:#ABB2BF;"> comparison operators</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> a, b, a </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">, a </span><span style="color:#56B6C2;"><=</span><span style="color:#ABB2BF;"> b, !(a </span><span style="color:#56B6C2;"><=</span><span style="color:#ABB2BF;"> b), a </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;"> && a </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> b </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#98C379;">`BETWEEN ... AND ...`</span><span style="color:#ABB2BF;"> operator</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">between</span><span style="color:#D19A66;"> 36</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#C678DD;"> and</span><span style="color:#D19A66;"> 40</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">not</span><span style="color:#C678DD;"> between</span><span style="color:#D19A66;"> 36</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">5</span><span style="color:#C678DD;"> and</span><span style="color:#D19A66;"> 40</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Fuzzy matching operator: </span><span style="color:#C678DD;">Use</span><span style="color:#98C379;"> `Like`</span><span style="color:#C678DD;"> for</span><span style="color:#ABB2BF;"> fuzzy matching</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#C678DD;"> like</span><span style="color:#98C379;"> '%cc%'</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.device </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#C678DD;"> like</span><span style="color:#98C379;"> '_b_'</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Fuzzy matching operator: </span><span style="color:#C678DD;">Use</span><span style="color:#98C379;"> `Regexp`</span><span style="color:#C678DD;"> for</span><span style="color:#ABB2BF;"> fuzzy matching</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#ABB2BF;"> regexp </span><span style="color:#98C379;">'^[A-Za-z]+$'</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> * </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> value</span><span style="color:#ABB2BF;"> regexp </span><span style="color:#98C379;">'^[a-z]+$'</span><span style="color:#C678DD;"> and</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 100</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> b, b </span><span style="color:#C678DD;">like</span><span style="color:#98C379;"> '1%'</span><span style="color:#ABB2BF;">, b regexp </span><span style="color:#98C379;">'[0-2]'</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#98C379;">`IS NULL`</span><span style="color:#ABB2BF;"> operator</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">is</span><span style="color:#C678DD;"> null</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> temperature </span><span style="color:#C678DD;">is not null</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#98C379;">`IN`</span><span style="color:#ABB2BF;"> operator</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">in</span><span style="color:#ABB2BF;"> (</span><span style="color:#98C379;">'200'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'300'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'400'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'500'</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#ABB2BF;"> code </span><span style="color:#C678DD;">not</span><span style="color:#C678DD;"> in</span><span style="color:#ABB2BF;"> (</span><span style="color:#98C379;">'200'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'300'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'400'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'500'</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> a, a </span><span style="color:#C678DD;">in</span><span style="color:#ABB2BF;"> (</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="logical-operators" tabindex="-1"><a class="header-anchor" href="#logical-operators"><span>Logical Operators</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#logical-operators">Logical Operators</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> a, b, a </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;">, a </span><span style="color:#56B6C2;"><=</span><span style="color:#ABB2BF;"> b, !(a </span><span style="color:#56B6C2;"><=</span><span style="color:#ABB2BF;"> b), a </span><span style="color:#56B6C2;">></span><span style="color:#D19A66;"> 10</span><span style="color:#ABB2BF;"> && a </span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> b </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="built-in-functions" tabindex="-1"><a class="header-anchor" href="#built-in-functions"><span>BUILT-IN FUNCTIONS</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#built-in-functions">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>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#aggregate-functions">Aggregate Functions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#56B6C2;"> count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">status</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> count_if(s1</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;"> & s2</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">), count_if(s1</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;"> & s2</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">db</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> count_if(s1</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;"> & s2</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'ignoreNull'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'false'</span><span style="color:#ABB2BF;">), count_if(s1</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;"> & s2</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">, </span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'ignoreNull'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'false'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">db</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> time_duration(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">db</span><span style="color:#ABB2BF;">.d1;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="arithmetic-functions" tabindex="-1"><a class="header-anchor" href="#arithmetic-functions"><span>Arithmetic Functions</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#arithmetic-functions">Arithmetic Operators and Functions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">sin</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">cos</span><span style="color:#ABB2BF;">(s1), </span><span style="color:#56B6C2;">tan</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">limit</span><span style="color:#D19A66;"> 5</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">1000</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s4,</span><span style="color:#56B6C2;">round</span><span style="color:#ABB2BF;">(s4),</span><span style="color:#56B6C2;">round</span><span style="color:#ABB2BF;">(s4,</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">),</span><span style="color:#56B6C2;">round</span><span style="color:#ABB2BF;">(s4,-</span><span style="color:#D19A66;">1</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="comparison-functions" tabindex="-1"><a class="header-anchor" href="#comparison-functions"><span>Comparison Functions</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#comparison-functions">Comparison Operators and Functions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ts, on_off(ts, </span><span style="color:#98C379;">'threshold'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ts, in_range(ts, </span><span style="color:#98C379;">'lower'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'upper'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="string-processing-functions" tabindex="-1"><a class="header-anchor" href="#string-processing-functions"><span>String Processing Functions</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#string-processing-functions">String Processing</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, string_contains(s1, </span><span style="color:#98C379;">'s'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'warn'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d4;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, string_matches(s1, </span><span style="color:#98C379;">'regex'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'[^\\s]+37229'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d4;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#C678DD;">length</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#C678DD;">locate</span><span style="color:#ABB2BF;">(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#C678DD;">locate</span><span style="color:#ABB2BF;">(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"reverse"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"true"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, startswith(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, endswith(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2, </span><span style="color:#56B6C2;">concat</span><span style="color:#ABB2BF;">(s1, s2, </span><span style="color:#98C379;">"target1"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"IoT"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"target2"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"DB"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2, </span><span style="color:#56B6C2;">concat</span><span style="color:#ABB2BF;">(s1, s2, </span><span style="color:#98C379;">"target1"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"IoT"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"target2"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"DB"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"series_behind"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"true"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">substring</span><span style="color:#ABB2BF;">(s1 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> for</span><span style="color:#D19A66;"> 2</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">replace</span><span style="color:#ABB2BF;">(s1, </span><span style="color:#98C379;">'es'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'tt'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">upper</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, </span><span style="color:#56B6C2;">lower</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s3, </span><span style="color:#56B6C2;">trim</span><span style="color:#ABB2BF;">(s3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2, strcmp(s1, s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> strreplace(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">","</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"replace"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"/"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"limit"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"2"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> strreplace(s1, </span><span style="color:#98C379;">"target"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">","</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"replace"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"/"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"limit"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"offset"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"reverse"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"true"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> regexmatch(s1, </span><span style="color:#98C379;">"regex"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"\d+\.\d+\.\d+\.\d+"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"group"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> regexreplace(s1, </span><span style="color:#98C379;">"regex"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"192\.168\.0\.(\d+)"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"replace"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"cluster-$1"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"limit"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> regexsplit(s1, </span><span style="color:#98C379;">"regex"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">","</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"index"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"-1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> regexsplit(s1, </span><span style="color:#98C379;">"regex"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">","</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"index"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"3"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="data-type-conversion-function" tabindex="-1"><a class="header-anchor" href="#data-type-conversion-function"><span>Data Type Conversion Function</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#data-type-conversion-function">Data Type Conversion Function</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#56B6C2;"> cast</span><span style="color:#ABB2BF;">(s1 </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> INT32) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="constant-timeseries-generating-functions" tabindex="-1"><a class="header-anchor" href="#constant-timeseries-generating-functions"><span>Constant Timeseries Generating Functions</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#constant-timeseries-generating-functions">Constant Timeseries Generating Functions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, s2, const(s1, </span><span style="color:#98C379;">'value'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'1024'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'INT64'</span><span style="color:#ABB2BF;">), </span><span style="color:#56B6C2;">pi</span><span style="color:#ABB2BF;">(s2), e(s1, s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="selector-functions" tabindex="-1"><a class="header-anchor" href="#selector-functions"><span>Selector Functions</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#selector-functions">Selector Functions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, top_k(s1, </span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">), bottom_k(s1, </span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d2 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> ></span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">12</span><span style="color:#ABB2BF;">-10T20:</span><span style="color:#D19A66;">36</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">15</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">530</span><span style="color:#ABB2BF;">+</span><span style="color:#D19A66;">08</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="continuous-interval-functions" tabindex="-1"><a class="header-anchor" href="#continuous-interval-functions"><span>Continuous Interval Functions</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#continuous-interval-functions">Continuous Interval Functions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, zero_count(s1), non_zero_count(s2), zero_duration(s3), non_zero_duration(s4) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d2;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="variation-trend-calculation-functions" tabindex="-1"><a class="header-anchor" href="#variation-trend-calculation-functions"><span>Variation Trend Calculation Functions</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#variation-trend-calculation-functions">Variation Trend Calculation Functions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> s1, time_difference(s1), </span><span style="color:#56B6C2;">difference</span><span style="color:#ABB2BF;">(s1), non_negative_difference(s1), derivative(s1), non_negative_derivative(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg1</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">limit</span><span style="color:#D19A66;"> 5</span><span style="color:#ABB2BF;"> offset </span><span style="color:#D19A66;">1000</span><span style="color:#ABB2BF;">; </span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> DIFF(s1), DIFF(s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> DIFF(s1, </span><span style="color:#98C379;">'ignoreNull'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'false'</span><span style="color:#ABB2BF;">), DIFF(s2, </span><span style="color:#98C379;">'ignoreNull'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'false'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="sample-functions" tabindex="-1"><a class="header-anchor" href="#sample-functions"><span>Sample Functions</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#sample-functions">Sample Functions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> equal_size_bucket_random_sample(temperature,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> random_sample </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> equal_size_bucket_agg_sample(temperature, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'avg'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_avg, equal_size_bucket_agg_sample(temperature, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'max'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_max, equal_size_bucket_agg_sample(temperature,</span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'min'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_min, equal_size_bucket_agg_sample(temperature, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'sum'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_sum, equal_size_bucket_agg_sample(temperature, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'extreme'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_extreme, equal_size_bucket_agg_sample(temperature, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'variance'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> agg_variance </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> equal_size_bucket_m4_sample(temperature, </span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> M4_sample </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> equal_size_bucket_outlier_sample(temperature, </span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'avg'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'number'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> outlier_avg_sample, equal_size_bucket_outlier_sample(temperature, </span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'stendis'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'number'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> outlier_stendis_sample, equal_size_bucket_outlier_sample(temperature, </span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'cos'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'number'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> outlier_cos_sample, equal_size_bucket_outlier_sample(temperature, </span><span style="color:#98C379;">'proportion'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'prenextdis'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'number'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> outlier_prenextdis_sample </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> M4(s1,</span><span style="color:#98C379;">'timeInterval'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'25'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'displayWindowBegin'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'displayWindowEnd'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'100'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">vehicle</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> M4(s1,</span><span style="color:#98C379;">'windowSize'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'10'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">vehicle</span><span style="color:#ABB2BF;">.d1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="change-points-function" tabindex="-1"><a class="header-anchor" href="#change-points-function"><span>Change Points Function</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html#change-points-function">Time-Series</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> change_points(s1), change_points(s2), change_points(s3), change_points(s4), change_points(s5), change_points(s6) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">testChangePoints</span><span style="color:#ABB2BF;">.d1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="data-quality-function-library" tabindex="-1"><a class="header-anchor" href="#data-quality-function-library"><span>DATA QUALITY FUNCTION LIBRARY</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html">Operator-and-Expression</a>.</p><h3 id="data-quality" tabindex="-1"><a class="header-anchor" href="#data-quality"><span>Data Quality</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html#data-quality">Data-Quality</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;"># Completeness</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> completeness(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> completeness(s1,</span><span style="color:#98C379;">"window"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"15"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Consistency</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> consistency(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> consistency(s1,</span><span style="color:#98C379;">"window"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"15"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Timeliness</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> timeliness(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> timeliness(s1,</span><span style="color:#98C379;">"window"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"15"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Validity</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> Validity(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> Validity(s1,</span><span style="color:#98C379;">"window"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"15"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Accuracy</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> Accuracy(t1,t2,t3,m1,m2,m3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="data-profiling" tabindex="-1"><a class="header-anchor" href="#data-profiling"><span>Data Profiling</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html#data-profiling">Data-Profiling</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;"># ACF</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> acf(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">05</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Distinct</span></span> |
| <span class="line"><span style="color:#C678DD;">select distinct</span><span style="color:#ABB2BF;">(s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Histogram</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> histogram</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">"min"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"max"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"20"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"count"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"10"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Integral</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> integral(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">10</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> integral(s1, </span><span style="color:#98C379;">"unit"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1m"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">10</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># IntegralAvg</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> integralavg(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">10</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Mad</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> mad(s0) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> mad(s0, </span><span style="color:#98C379;">"error"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.01"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Median</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> median(s0, </span><span style="color:#98C379;">"error"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.01"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MinMax</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> minmax(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Mode</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> mode(s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MvAvg</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> mvavg(s1, </span><span style="color:#98C379;">"window"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"3"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># PACF</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> pacf(s1, </span><span style="color:#98C379;">"lag"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"5"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Percentile</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> percentile(s0, </span><span style="color:#98C379;">"rank"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.2"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"error"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.01"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Quantile</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> quantile(s0, </span><span style="color:#98C379;">"rank"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.2"</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">"K"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"800"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Period</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> period</span><span style="color:#ABB2BF;">(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d3</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># QLB</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> QLB(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Resample</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> resample</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">'every'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5m'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'interp'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'linear'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> resample</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">'every'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'30m'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'aggr'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'first'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> resample</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">'every'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'30m'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'start'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2021-03-06 15:00:00'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Sample</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> sample</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">'method'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'reservoir'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> sample</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">'method'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'isometric'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Segment</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> segment(s1, </span><span style="color:#98C379;">"error"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"0.1"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Skew</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> skew(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Spline</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> spline(s1, </span><span style="color:#98C379;">"points"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"151"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Spread</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> spread(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Stddev</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> stddev(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># ZScore</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> zscore(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="anomaly-detection" tabindex="-1"><a class="header-anchor" href="#anomaly-detection"><span>Anomaly Detection</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html#anomaly-detection">Anomaly-Detection</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;"># IQR</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> iqr(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># KSigma</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ksigma(s1,</span><span style="color:#98C379;">"k"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"1.0"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># LOF</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> lof(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><</span><span style="color:#D19A66;">1000</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> lof(s1, </span><span style="color:#98C379;">"method"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"series"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"><</span><span style="color:#D19A66;">1000</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MissDetect</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> missdetect(s2,</span><span style="color:#98C379;">'minlen'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'10'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># </span><span style="color:#C678DD;">Range</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#C678DD;"> range</span><span style="color:#ABB2BF;">(s1,</span><span style="color:#98C379;">"lower_bound"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"101.0"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"upper_bound"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"125.0"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">30</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># TwoSidedFilter</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> TwoSidedFilter(s0, </span><span style="color:#98C379;">'len'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'threshold'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.3'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Outlier</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> outlier(s1,</span><span style="color:#98C379;">"r"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"5.0"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"k"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"4"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"w"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"10"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"s"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"5"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MasterTrain</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> MasterTrain(lo,la,m_lo,m_la,</span><span style="color:#98C379;">'p'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'eta'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'1.0'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MasterDetect</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> MasterDetect(lo,la,m_lo,m_la,model,</span><span style="color:#98C379;">'output_type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'repair'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'p'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'eta'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'1.0'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> MasterDetect(lo,la,m_lo,m_la,model,</span><span style="color:#98C379;">'output_type'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'anomaly'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'p'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'3'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'eta'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'1.0'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="frequency-domain" tabindex="-1"><a class="header-anchor" href="#frequency-domain"><span>Frequency Domain</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html#frequency-domain-analysis">Frequency-Domain</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;"># Conv</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> conv(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Deconv</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> deconv(s3,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> deconv(s3,s2,</span><span style="color:#98C379;">'result'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'remainder'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># DWT</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> dwt(s1,</span><span style="color:#98C379;">"method"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"haar"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># FFT</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> fft(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> fft(s1, </span><span style="color:#98C379;">'result'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'real'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'compress'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.99'</span><span style="color:#ABB2BF;">), fft(s1, </span><span style="color:#98C379;">'result'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'imag'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'compress'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.99'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># HighPass</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> highpass(s1,</span><span style="color:#98C379;">'wpass'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.45'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># IFFT</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ifft(re, im, </span><span style="color:#98C379;">'interval'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'1m'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'start'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'2021-01-01 00:00:00'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># LowPass</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> lowpass(s1,</span><span style="color:#98C379;">'wpass'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0.45'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Envelope</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> envelope(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="data-matching" tabindex="-1"><a class="header-anchor" href="#data-matching"><span>Data Matching</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html#data-matching">Data-Matching</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;"># Cov</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> cov(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># DTW</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> dtw(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Pearson</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> pearson(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># PtnSym</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ptnsym(s4, </span><span style="color:#98C379;">'window'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'threshold'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'0'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># XCorr</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> xcorr(s1, s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">where</span><span style="color:#C678DD;"> time</span><span style="color:#56B6C2;"> <=</span><span style="color:#D19A66;"> 2020</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#ABB2BF;">-</span><span style="color:#D19A66;">01</span><span style="color:#D19A66;"> 00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">00</span><span style="color:#ABB2BF;">:</span><span style="color:#D19A66;">05</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="data-repairing" tabindex="-1"><a class="header-anchor" href="#data-repairing"><span>Data Repairing</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html#data-repairing">Data-Repairing</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;"># TimestampRepair</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> timestamprepair(s1,</span><span style="color:#98C379;">'interval'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'10000'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> timestamprepair(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># ValueFill</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> valuefill(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> valuefill(s1,</span><span style="color:#98C379;">"method"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"previous"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># ValueRepair</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> valuerepair(s1) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> valuerepair(s1,</span><span style="color:#98C379;">'method'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'LsGreedy'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># MasterRepair</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> MasterRepair(t1,t2,t3,m1,m2,m3) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># SeasonalRepair</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> seasonalrepair(s1,</span><span style="color:#98C379;">'period'</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'k'</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">2</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> seasonalrepair(s1,</span><span style="color:#98C379;">'method'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'improved'</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">'period'</span><span style="color:#56B6C2;">=</span><span style="color:#D19A66;">3</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d2</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="series-discovery" tabindex="-1"><a class="header-anchor" href="#series-discovery"><span>Series Discovery</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html#series-discovery">Series-Discovery</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;"># ConsecutiveSequences</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> consecutivesequences(s1,s2,</span><span style="color:#98C379;">'gap'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'5m'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> consecutivesequences(s1,s2) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># ConsecutiveWindows</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> consecutivewindows(s1,s2,</span><span style="color:#98C379;">'length'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'10m'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="machine-learning" tabindex="-1"><a class="header-anchor" href="#machine-learning"><span>Machine Learning</span></a></h3><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html#machine-learning">Machine-Learning</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;"># AR</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> ar(s0,</span><span style="color:#98C379;">"p"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"2"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d0</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># Representation</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> representation(s0,</span><span style="color:#98C379;">"tb"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"3"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"vb"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"2"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d0</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;"># RM</span></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> rm(s0, s1,</span><span style="color:#98C379;">"tb"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"3"</span><span style="color:#ABB2BF;">,</span><span style="color:#98C379;">"vb"</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">"2"</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test</span><span style="color:#ABB2BF;">.d0</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="lambda-expression" tabindex="-1"><a class="header-anchor" href="#lambda-expression"><span>LAMBDA EXPRESSION</span></a></h2><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html#lambda-expression">Lambda</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> jexl(temperature, </span><span style="color:#98C379;">'expr'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'x -> {x + x}'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> jexl1, jexl(temperature, </span><span style="color:#98C379;">'expr'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'x -> {x * 3}'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> jexl2, jexl(temperature, </span><span style="color:#98C379;">'expr'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'x -> {x * x}'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> jexl3, jexl(temperature, </span><span style="color:#98C379;">'expr'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'x -> {multiply(x, 100)}'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> jexl4, jexl(temperature, st, </span><span style="color:#98C379;">'expr'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'(x, y) -> {x + y}'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> jexl5, jexl(temperature, st, str, </span><span style="color:#98C379;">'expr'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'(x, y, z) -> {x + y + z}'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#ABB2BF;"> jexl6 </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">;</span><span style="color:#98C379;">```</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="conditional-expression" tabindex="-1"><a class="header-anchor" href="#conditional-expression"><span>CONDITIONAL EXPRESSION</span></a></h2><p>For details and examples, see the document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html#conditional-expressions">Conditional Expressions</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> T, P, </span><span style="color:#C678DD;">case</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 1000</span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">T </span><span style="color:#C678DD;">and</span><span style="color:#ABB2BF;"> T</span><span style="color:#56B6C2;"><</span><span style="color:#D19A66;">1050</span><span style="color:#C678DD;"> and</span><span style="color:#D19A66;"> 1000000</span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">P </span><span style="color:#C678DD;">and</span><span style="color:#ABB2BF;"> P</span><span style="color:#56B6C2;"><</span><span style="color:#D19A66;">1100000</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "good!"</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#ABB2BF;"> T</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">1000</span><span style="color:#C678DD;"> or</span><span style="color:#ABB2BF;"> T</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">1050</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "bad temperature"</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#ABB2BF;"> P</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">1000000</span><span style="color:#C678DD;"> or</span><span style="color:#ABB2BF;"> P</span><span style="color:#56B6C2;">>=</span><span style="color:#D19A66;">1100000</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "bad pressure"</span></span> |
| <span class="line"><span style="color:#C678DD;">end</span><span style="color:#C678DD;"> as</span><span style="color:#98C379;"> `result`</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> str, </span><span style="color:#C678DD;">case</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#ABB2BF;"> str </span><span style="color:#C678DD;">like</span><span style="color:#98C379;"> "%cc%"</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "has cc"</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#ABB2BF;"> str </span><span style="color:#C678DD;">like</span><span style="color:#98C379;"> "%dd%"</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "has dd"</span></span> |
| <span class="line"><span style="color:#C678DD;">else</span><span style="color:#98C379;"> "no cc and dd"</span><span style="color:#C678DD;"> end</span><span style="color:#C678DD;"> as</span><span style="color:#98C379;"> `result`</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test2</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span></span> |
| <span class="line"><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">case</span><span style="color:#C678DD;"> when</span><span style="color:#ABB2BF;"> x</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">1</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> end</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#98C379;"> `(-∞,1]`</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">case</span><span style="color:#C678DD;"> when</span><span style="color:#D19A66;"> 1</span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">x </span><span style="color:#C678DD;">and</span><span style="color:#ABB2BF;"> x</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">3</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> end</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#98C379;"> `(1,3]`</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">case</span><span style="color:#C678DD;"> when</span><span style="color:#D19A66;"> 3</span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">x </span><span style="color:#C678DD;">and</span><span style="color:#ABB2BF;"> x</span><span style="color:#56B6C2;"><=</span><span style="color:#D19A66;">7</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> end</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#98C379;"> `(3,7]`</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#56B6C2;">count</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">case</span><span style="color:#C678DD;"> when</span><span style="color:#D19A66;"> 7</span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">x </span><span style="color:#C678DD;">then</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> end</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">as</span><span style="color:#98C379;"> `(7,+∞)`</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test3</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> x, </span><span style="color:#C678DD;">case</span><span style="color:#ABB2BF;"> x </span><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "one"</span><span style="color:#C678DD;"> when</span><span style="color:#D19A66;"> 2</span><span style="color:#C678DD;"> then</span><span style="color:#98C379;"> "two"</span><span style="color:#C678DD;"> else</span><span style="color:#98C379;"> "other"</span><span style="color:#C678DD;"> end</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test4</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> x, </span><span style="color:#C678DD;">case</span><span style="color:#ABB2BF;"> x </span><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> then</span><span style="color:#ABB2BF;"> true </span><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 2</span><span style="color:#C678DD;"> then</span><span style="color:#ABB2BF;"> false </span><span style="color:#C678DD;">end</span><span style="color:#C678DD;"> as</span><span style="color:#98C379;"> `result`</span><span style="color:#C678DD;"> from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test4</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">select</span><span style="color:#ABB2BF;"> x, </span><span style="color:#C678DD;">case</span><span style="color:#ABB2BF;"> x</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 1</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 1</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 2</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 222222222222222</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 3</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 3</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">3</span></span> |
| <span class="line"><span style="color:#C678DD;">when</span><span style="color:#D19A66;"> 4</span><span style="color:#C678DD;"> then</span><span style="color:#D19A66;"> 4</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">4444444444444</span></span> |
| <span class="line"><span style="color:#C678DD;">end</span><span style="color:#C678DD;"> as</span><span style="color:#98C379;"> `result`</span></span> |
| <span class="line"><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">test4</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="trigger" tabindex="-1"><a class="header-anchor" href="#trigger"><span>TRIGGER</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/User-Manual/Database-Programming.html">Database-Programming</a>.</p><h3 id="create-trigger" tabindex="-1"><a class="header-anchor" href="#create-trigger"><span>Create Trigger</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">// </span><span style="color:#C678DD;">Create</span><span style="color:#ABB2BF;"> Trigger</span></span> |
| <span class="line"><span style="color:#ABB2BF;">createTrigger</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> triggerType TRIGGER triggerName</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">identifier triggerEventClause </span><span style="color:#C678DD;">ON</span><span style="color:#ABB2BF;"> pathPattern </span><span style="color:#C678DD;">AS</span><span style="color:#ABB2BF;"> className</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">STRING_LITERAL uriClause? triggerAttributeClause?</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">triggerType</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : STATELESS | STATEFUL</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">triggerEventClause</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : (</span><span style="color:#C678DD;">BEFORE</span><span style="color:#ABB2BF;"> | </span><span style="color:#C678DD;">AFTER</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">INSERT</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#ABB2BF;">uriClause</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">USING</span><span style="color:#ABB2BF;"> URI uri</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">uri</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : STRING_LITERAL</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#ABB2BF;">triggerAttributeClause</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">WITH</span><span style="color:#ABB2BF;"> LR_BRACKET triggerAttribute (COMMA triggerAttribute)* RR_BRACKET</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#ABB2BF;">triggerAttribute</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">key</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">attributeKey operator_eq </span><span style="color:#C678DD;">value</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">attributeValue</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> ;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="drop-trigger" tabindex="-1"><a class="header-anchor" href="#drop-trigger"><span>Drop Trigger</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">// </span><span style="color:#C678DD;">Drop</span><span style="color:#ABB2BF;"> Trigger</span></span> |
| <span class="line"><span style="color:#ABB2BF;">dropTrigger</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> : </span><span style="color:#C678DD;">DROP</span><span style="color:#ABB2BF;"> TRIGGER triggerName</span><span style="color:#56B6C2;">=</span><span style="color:#ABB2BF;">identifier</span></span> |
| <span class="line"><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-trigger" tabindex="-1"><a class="header-anchor" href="#show-trigger"><span>Show Trigger</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">SHOW TRIGGERS</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="continuous-query-cq" tabindex="-1"><a class="header-anchor" href="#continuous-query-cq"><span>CONTINUOUS QUERY (CQ)</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html">Operator-and-Expression</a>.</p><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> (CONTINUOUS QUERY | CQ) </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">cq_id</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#ABB2BF;">[</span><span style="color:#C678DD;">RESAMPLE</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#E06C75;"> [EVERY <every_interval>]</span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#E06C75;"> [BOUNDARY <execution_boundary_time>]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [RANGE <start_time_offset>[, end_time_offset]</span><span style="color:#ABB2BF;">] </span></span> |
| <span class="line"><span style="color:#ABB2BF;">]</span></span> |
| <span class="line"><span style="color:#E06C75;">[TIMEOUT POLICY BLOCKED|DISCARD]</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> CLAUSE</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#ABB2BF;"> CLAUSE</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#ABB2BF;"> CLAUSE</span></span> |
| <span class="line"><span style="color:#E06C75;"> [WHERE CLAUSE]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [GROUP BY(<group_by_interval>[, <sliding_step>]</span><span style="color:#ABB2BF;">) </span><span style="color:#E06C75;">[, level = <level>]</span><span style="color:#ABB2BF;">]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [HAVING CLAUSE]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [FILL ({PREVIOUS | LINEAR | constant} (, interval=DURATION_LITERAL)?)]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [LIMIT rowLimit OFFSET rowOffset]</span></span> |
| <span class="line"><span style="color:#E06C75;"> [ALIGN BY DEVICE]</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="configuring-execution-intervals" tabindex="-1"><a class="header-anchor" href="#configuring-execution-intervals"><span>Configuring execution intervals</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY cq1</span></span> |
| <span class="line"><span style="color:#C678DD;">RESAMPLE</span><span style="color:#ABB2BF;"> EVERY 20s</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> max_value(temperature)</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max)</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*</span></span> |
| <span class="line"><span style="color:#C678DD;"> GROUP BY</span><span style="color:#ABB2BF;">(10s)</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="configuring-time-range-for-resampling" tabindex="-1"><a class="header-anchor" href="#configuring-time-range-for-resampling"><span>Configuring time range for resampling</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY cq2</span></span> |
| <span class="line"><span style="color:#C678DD;">RESAMPLE</span><span style="color:#C678DD;"> RANGE</span><span style="color:#ABB2BF;"> 40s</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> max_value(temperature)</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max)</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*</span></span> |
| <span class="line"><span style="color:#C678DD;"> GROUP BY</span><span style="color:#ABB2BF;">(10s)</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="configuring-execution-intervals-and-cq-time-ranges" tabindex="-1"><a class="header-anchor" href="#configuring-execution-intervals-and-cq-time-ranges"><span>Configuring execution intervals and CQ time ranges</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY cq3</span></span> |
| <span class="line"><span style="color:#C678DD;">RESAMPLE</span><span style="color:#ABB2BF;"> EVERY 20s </span><span style="color:#C678DD;">RANGE</span><span style="color:#ABB2BF;"> 40s</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> max_value(temperature)</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max)</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*</span></span> |
| <span class="line"><span style="color:#C678DD;"> GROUP BY</span><span style="color:#ABB2BF;">(10s)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> FILL(</span><span style="color:#D19A66;">100</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="configuring-end-time-offset-for-cq-time-range" tabindex="-1"><a class="header-anchor" href="#configuring-end-time-offset-for-cq-time-range"><span>Configuring end_time_offset for CQ time range</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY cq4</span></span> |
| <span class="line"><span style="color:#C678DD;">RESAMPLE</span><span style="color:#ABB2BF;"> EVERY 20s </span><span style="color:#C678DD;">RANGE</span><span style="color:#ABB2BF;"> 40s, 20s</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> max_value(temperature)</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf02</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt02</span><span style="color:#ABB2BF;">(temperature_max), </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wf01</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">wt01</span><span style="color:#ABB2BF;">(temperature_max)</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*</span></span> |
| <span class="line"><span style="color:#C678DD;"> GROUP BY</span><span style="color:#ABB2BF;">(10s)</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> FILL(</span><span style="color:#D19A66;">100</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">0</span><span style="color:#ABB2BF;">)</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="cq-without-group-by-clause" tabindex="-1"><a class="header-anchor" href="#cq-without-group-by-clause"><span>CQ without group by clause</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> CONTINUOUS QUERY cq5</span></span> |
| <span class="line"><span style="color:#C678DD;">RESAMPLE</span><span style="color:#ABB2BF;"> EVERY 20s</span></span> |
| <span class="line"><span style="color:#C678DD;">BEGIN</span></span> |
| <span class="line"><span style="color:#C678DD;"> SELECT</span><span style="color:#ABB2BF;"> temperature + </span><span style="color:#D19A66;">1</span></span> |
| <span class="line"><span style="color:#C678DD;"> INTO</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">precalculated_sg</span><span style="color:#ABB2BF;">.::(temperature)</span></span> |
| <span class="line"><span style="color:#C678DD;"> FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">ln</span><span style="color:#ABB2BF;">.*.*</span></span> |
| <span class="line"><span style="color:#ABB2BF;"> align </span><span style="color:#C678DD;">by</span><span style="color:#ABB2BF;"> device</span></span> |
| <span class="line"><span style="color:#C678DD;">END</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="cq-management" tabindex="-1"><a class="header-anchor" href="#cq-management"><span>CQ Management</span></a></h3><h4 id="listing-continuous-queries" tabindex="-1"><a class="header-anchor" href="#listing-continuous-queries"><span>Listing continuous queries</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">SHOW (CONTINUOUS QUERIES | CQS)</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="dropping-continuous-queries" tabindex="-1"><a class="header-anchor" href="#dropping-continuous-queries"><span>Dropping continuous queries</span></a></h4><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#ABB2BF;"> (CONTINUOUS QUERY | CQ) </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">cq_id</span><span style="color:#56B6C2;">></span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="altering-continuous-queries" tabindex="-1"><a class="header-anchor" href="#altering-continuous-queries"><span>Altering continuous queries</span></a></h4><p>CQs can't be altered once they're created. To change a CQ, you must <code>DROP</code> and re<code>CREATE</code> it with the updated settings.</p><h2 id="user-defined-function-udf" tabindex="-1"><a class="header-anchor" href="#user-defined-function-udf"><span>USER-DEFINED FUNCTION (UDF)</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/UDF-Libraries.html">Operator-and-Expression</a>.</p><h3 id="udf-registration" tabindex="-1"><a class="header-anchor" href="#udf-registration"><span>UDF Registration</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#C678DD;"> FUNCTION</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">UDF-</span><span style="color:#C678DD;">NAME</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> AS</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">UDF-CLASS-FULL-PATHNAME</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> (</span><span style="color:#C678DD;">USING</span><span style="color:#ABB2BF;"> URI URI-STRING)?</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="udf-deregistration" tabindex="-1"><a class="header-anchor" href="#udf-deregistration"><span>UDF Deregistration</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#C678DD;"> FUNCTION</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">UDF-</span><span style="color:#C678DD;">NAME</span><span style="color:#56B6C2;">></span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="udf-queries" tabindex="-1"><a class="header-anchor" href="#udf-queries"><span>UDF Queries</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> example(*) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> example(s1, *) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> example(*, *) </span><span style="color:#C678DD;">from</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> example(s1, </span><span style="color:#98C379;">'key1'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'value1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'key2'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'value2'</span><span style="color:#ABB2BF;">), example(*, </span><span style="color:#98C379;">'key3'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'value3'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> example(s1, s2, </span><span style="color:#98C379;">'key1'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'value1'</span><span style="color:#ABB2BF;">, </span><span style="color:#98C379;">'key2'</span><span style="color:#56B6C2;">=</span><span style="color:#98C379;">'value2'</span><span style="color:#ABB2BF;">) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> s1, s2, example(s1, s2) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> *, example(*) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1 </span><span style="color:#C678DD;">DISABLE</span><span style="color:#ABB2BF;"> ALIGN;</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> s1 * example(* / s1 + s2) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span> |
| <span class="line"><span style="color:#C678DD;">SELECT</span><span style="color:#ABB2BF;"> s1, s2, s1 + example(s1, s2), s1 - example(s1 + example(s1, s2) / s2) </span><span style="color:#C678DD;">FROM</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">sg</span><span style="color:#ABB2BF;">.d1;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="show-all-registered-udfs" tabindex="-1"><a class="header-anchor" href="#show-all-registered-udfs"><span>Show All Registered UDFs</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">SHOW FUNCTIONS</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h2 id="administration-management" tabindex="-1"><a class="header-anchor" href="#administration-management"><span>ADMINISTRATION MANAGEMENT</span></a></h2><p>For more details, see document <a class="route-link" href="/UserGuide/V1.3.x/SQL-Manual/Operator-and-Expression.html">Operator-and-Expression</a>.</p><h3 id="sql-statements" tabindex="-1"><a class="header-anchor" href="#sql-statements"><span>SQL Statements</span></a></h3><ul><li>Create user (Requires MANAGE_USER permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> USER </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">userName</span><span style="color:#56B6C2;">></span><span style="color:#56B6C2;"> <</span><span style="color:#C678DD;">password</span><span style="color:#56B6C2;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">CREATE</span><span style="color:#ABB2BF;"> USER user1 </span><span style="color:#98C379;">'passwd'</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Delete user (Requires MANAGE_USER permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#C678DD;"> USER</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">userName</span><span style="color:#56B6C2;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">DROP</span><span style="color:#ABB2BF;"> USER user1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Create role (Requires MANAGE_ROLE permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">CREATE</span><span style="color:#C678DD;"> ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">roleName</span><span style="color:#56B6C2;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">CREATE</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;"> role1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Delete role (Requires MANAGE_ROLE permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">DROP</span><span style="color:#C678DD;"> ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">roleName</span><span style="color:#56B6C2;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">DROP</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;"> role1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Grant role to user (Requires MANAGE_ROLE permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">GRANT</span><span style="color:#C678DD;"> ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">ROLENAME</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> TO</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">USERNAME</span><span style="color:#56B6C2;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#C678DD;"> ROLE</span><span style="color:#C678DD;"> admin</span><span style="color:#C678DD;"> TO</span><span style="color:#ABB2BF;"> user1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Revoke role from user(Requires MANAGE_ROLE permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">REVOKE</span><span style="color:#C678DD;"> ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">ROLENAME</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> FROM</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">USER</span><span style="color:#56B6C2;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#C678DD;"> ROLE</span><span style="color:#C678DD;"> admin</span><span style="color:#C678DD;"> FROM</span><span style="color:#ABB2BF;"> user1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>List all user (Requires MANAGE_USER permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">LIST USER</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>List all role (Requires MANAGE_ROLE permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">LIST </span><span style="color:#C678DD;">ROLE</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>List all users granted specific role.（Requires MANAGE_USER permission)</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">LIST USER OF </span><span style="color:#C678DD;">ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">roleName</span><span style="color:#56B6C2;">></span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: LIST USER OF </span><span style="color:#C678DD;">ROLE</span><span style="color:#ABB2BF;"> roleuser</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>List all role granted to specific user.</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">LIST </span><span style="color:#C678DD;">ROLE</span><span style="color:#ABB2BF;"> OF USER </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">username</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;"> </span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: LIST </span><span style="color:#C678DD;">ROLE</span><span style="color:#ABB2BF;"> OF USER tempuser</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>List all privileges of user</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">LIST PRIVILEGES OF USER </span><span style="color:#56B6C2;"><</span><span style="color:#ABB2BF;">username</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: LIST PRIVILEGES OF USER tempuser;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>List all privileges of role</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">LIST PRIVILEGES OF </span><span style="color:#C678DD;">ROLE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">roleName</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: LIST PRIVILEGES OF </span><span style="color:#C678DD;">ROLE</span><span style="color:#ABB2BF;"> actor;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Update password</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">ALTER</span><span style="color:#C678DD;"> USER</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">username</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> SET</span><span style="color:#C678DD;"> PASSWORD</span><span style="color:#56B6C2;"> <</span><span style="color:#C678DD;">password</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">ALTER</span><span style="color:#ABB2BF;"> USER tempuser </span><span style="color:#C678DD;">SET</span><span style="color:#C678DD;"> PASSWORD</span><span style="color:#98C379;"> 'newpwd'</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="authorization-and-deauthorization" tabindex="-1"><a class="header-anchor" href="#authorization-and-deauthorization"><span>Authorization and Deauthorization</span></a></h3><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">GRANT</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">PRIVILEGES</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> ON</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">PATHS</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> TO</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;">/USER </span><span style="color:#56B6C2;"><</span><span style="color:#C678DD;">NAME</span><span style="color:#56B6C2;">></span><span style="color:#E06C75;"> [WITH GRANT OPTION]</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#C678DD;"> READ</span><span style="color:#C678DD;"> ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">TO</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;"> role1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#ABB2BF;"> READ_DATA, WRITE_DATA </span><span style="color:#C678DD;">ON</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t1</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">TO</span><span style="color:#ABB2BF;"> USER user1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#ABB2BF;"> READ_DATA, WRITE_DATA </span><span style="color:#C678DD;">ON</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t1</span><span style="color:#ABB2BF;">.**,</span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t2</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">TO</span><span style="color:#ABB2BF;"> USER user1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#ABB2BF;"> MANAGE_ROLE </span><span style="color:#C678DD;">ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">TO</span><span style="color:#ABB2BF;"> USER user1 </span><span style="color:#C678DD;">WITH</span><span style="color:#C678DD;"> GRANT</span><span style="color:#C678DD;"> OPTION</span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">GRANT</span><span style="color:#ABB2BF;"> ALL </span><span style="color:#C678DD;">ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">TO</span><span style="color:#ABB2BF;"> USER user1 </span><span style="color:#C678DD;">WITH</span><span style="color:#C678DD;"> GRANT</span><span style="color:#C678DD;"> OPTION</span><span style="color:#ABB2BF;">;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">REVOKE</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">PRIVILEGES</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> ON</span><span style="color:#56B6C2;"> <</span><span style="color:#ABB2BF;">PATHS</span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> FROM</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;">/USER </span><span style="color:#56B6C2;"><</span><span style="color:#C678DD;">NAME</span><span style="color:#56B6C2;">></span><span style="color:#ABB2BF;">;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#C678DD;"> READ</span><span style="color:#C678DD;"> ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">FROM</span><span style="color:#C678DD;"> ROLE</span><span style="color:#ABB2BF;"> role1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#ABB2BF;"> READ_DATA, WRITE_DATA </span><span style="color:#C678DD;">ON</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t1</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">FROM</span><span style="color:#ABB2BF;"> USER user1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#ABB2BF;"> READ_DATA, WRITE_DATA </span><span style="color:#C678DD;">ON</span><span style="color:#D19A66;"> root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t1</span><span style="color:#ABB2BF;">.**, </span><span style="color:#D19A66;">root</span><span style="color:#ABB2BF;">.</span><span style="color:#D19A66;">t2</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">FROM</span><span style="color:#ABB2BF;"> USER user1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#ABB2BF;"> MANAGE_ROLE </span><span style="color:#C678DD;">ON</span><span style="color:#C678DD;"> root</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">FROM</span><span style="color:#ABB2BF;"> USER user1;</span></span> |
| <span class="line"><span style="color:#ABB2BF;">eg: </span><span style="color:#C678DD;">REVOKE</span><span style="color:#ABB2BF;"> ALL </span><span style="color:#C678DD;">ON</span><span style="color:#C678DD;"> ROOT</span><span style="color:#ABB2BF;">.** </span><span style="color:#C678DD;">FROM</span><span style="color:#ABB2BF;"> USER user1;</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="delete-time-partition-experimental-1" tabindex="-1"><a class="header-anchor" href="#delete-time-partition-experimental-1"><span>Delete Time Partition (experimental)</span></a></h4><div class="language- line-numbers-mode" data-highlighter="shiki" data-ext="" data-title="" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span>Eg: IoTDB > DELETE PARTITION root.ln 0,1,2</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="continuous-query-cq-1" tabindex="-1"><a class="header-anchor" href="#continuous-query-cq-1"><span>Continuous Query,CQ</span></a></h4><div class="language- line-numbers-mode" data-highlighter="shiki" data-ext="" data-title="" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span>Eg: IoTDB > CREATE CONTINUOUS QUERY cq1 BEGIN SELECT max_value(temperature) INTO temperature_max FROM root.ln.*.* GROUP BY time(10s) END</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h4 id="maintenance-command" tabindex="-1"><a class="header-anchor" href="#maintenance-command"><span>Maintenance Command</span></a></h4><ul><li>FLUSH</li></ul><div class="language- line-numbers-mode" data-highlighter="shiki" data-ext="" data-title="" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span>Eg: IoTDB > flush</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>MERGE</li></ul><div class="language- line-numbers-mode" data-highlighter="shiki" data-ext="" data-title="" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span>Eg: IoTDB > MERGE</span></span> |
| <span class="line"><span>Eg: IoTDB > FULL MERGE</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>CLEAR CACHE</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">Eg: IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> CLEAR</span><span style="color:#ABB2BF;"> CACHE</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>START REPAIR DATA</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">Eg: IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> START</span><span style="color:#ABB2BF;"> REPAIR </span><span style="color:#C678DD;">DATA</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>STOP REPAIR DATA</li></ul><div class="language-sql line-numbers-mode" data-highlighter="shiki" data-ext="sql" data-title="sql" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#ABB2BF;">Eg: IoTDB </span><span style="color:#56B6C2;">></span><span style="color:#C678DD;"> STOP</span><span style="color:#ABB2BF;"> REPAIR </span><span style="color:#C678DD;">DATA</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>SET SYSTEM TO READONLY / WRITABLE</li></ul><div class="language- line-numbers-mode" data-highlighter="shiki" data-ext="" data-title="" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span>Eg: IoTDB > SET SYSTEM TO READONLY / WRITABLE</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><ul><li>Query abort</li></ul><div class="language- line-numbers-mode" data-highlighter="shiki" data-ext="" data-title="" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span>Eg: IoTDB > KILL QUERY 1</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div></div><!----><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/UserGuide/V1.3.x/SQL-Manual/SQL-Manual.md" aria-label="Found Error? Edit this page on GitHub" rel="noopener noreferrer" target="_blank" iconsizing="both"><!--[--><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><!--]-->Found Error? Edit this page on GitHub<!----></a></div><div class="vp-meta-item git-info"><div class="update-time"><span class="vp-meta-label">Last update: </span><span class="vp-meta-info" data-allow-mismatch="text">3/6/2025, 10:20:12 AM</span></div><!----></div></footer><!----><!----><!----><!--]--></main><!--]--><footer class="site-footer"><span id="doc-version" style="display:none;">V1.3.x</span><p class="copyright-text">Copyright © 2025 The Apache Software Foundation. |
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