import{_ as o,r as p,o as l,c,a as i,d as n,e as s,b as e,f as t}from"./app-1A4W01qe.js";const r={},u=t('<h1 id="c-native-api" tabindex="-1"><a class="header-anchor" href="#c-native-api" aria-hidden="true">#</a> C++ Native API</h1><h2 id="dependencies" tabindex="-1"><a class="header-anchor" href="#dependencies" aria-hidden="true">#</a> Dependencies</h2><ul><li>Java 8+</li><li>Maven 3.5+</li><li>Flex</li><li>Bison 2.7+</li><li>Boost 1.56+</li><li>OpenSSL 1.0+</li><li>GCC 5.5.0+</li></ul><h2 id="installation-from-source-code" tabindex="-1"><a class="header-anchor" href="#installation-from-source-code" aria-hidden="true">#</a> Installation From Source Code</h2><h3 id="install-cpp-dependencies" tabindex="-1"><a class="header-anchor" href="#install-cpp-dependencies" aria-hidden="true">#</a> Install CPP Dependencies</h3>',5),d=t(`<li><p><strong>MAC</strong></p><ol><li><p>Install Bison ：Bison 2.3 is preinstalled on OSX, but this version is outdated, and we need a newer version.</p><p>When building Thrift with Bison 2.3, the following error would be shown in the build output:<br><code>invalid directive: &#39;%code&#39;</code></p><p>In such a case, please update <code>Bison</code>:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code>brew <span class="token function">install</span> bison
brew <span class="token function">link</span> bison <span class="token parameter variable">--force</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><p>Then, you need to tell the OS where the new bison is.</p><p>For Bash users:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">echo</span> <span class="token string">&#39;export PATH=&quot;/usr/local/opt/bison/bin:$PATH&quot;&#39;</span> <span class="token operator">&gt;&gt;</span> ~/.bash_profile
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>For zsh users:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token builtin class-name">echo</span> <span class="token string">&#39;export PATH=&quot;/usr/local/opt/bison/bin:$PATH&quot;&#39;</span> <span class="token operator">&gt;&gt;</span> ~/.zshrc
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div></li><li><p>Install Boost ：Please make sure a relative new version of Boost is ready on your machine.<br> If no Boost available, install the latest version of Boost:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code>brew <span class="token function">install</span> boost
brew <span class="token function">link</span> boost
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div></li><li><p>OpenSSL ：Make sure the Openssl libraries has been installed on your Mac. The default Openssl include file search path is &quot;/usr/local/opt/openssl/include&quot;.</p><p>If Openssl header files can not be found when building Thrift, please add option<code>-Dopenssl.include.dir=&quot;&quot;</code>.</p></li></ol></li><li><p><strong>Ubuntu 20</strong></p><p>To install all dependencies, run:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token function">sudo</span> <span class="token function">apt-get</span> <span class="token function">install</span> gcc-9 g++-9 libstdc++-9-dev bison flex libboost-all-dev libssl-dev zlib1g-dev
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div></li><li><p><strong>CentOS 7.x</strong></p><p>Some packages can be installed using Yum:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token function">sudo</span> yum <span class="token function">install</span> bison flex openssl-devel
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>The version of gcc and boost installed by yum is too low, therefore you should compile or download these binary packages by yourself.</p></li>`,3),k=n("p",null,[n("strong",null,"Windows")],-1),m=n("p",null,"Building environment",-1),v=n("li",null,[s("Install "),n("code",null,"MS Visual Studio"),s("(recommend 2019 version): remember to install Visual Studio C/C++ IDE and compiler(supporting CMake, Clang, MinGW).")],-1),b={href:"https://cmake.org/download/",target:"_blank",rel:"noopener noreferrer"},g=n("p",null,[s("Download and install "),n("code",null,"Flex"),s(" & "),n("code",null,"Bison")],-1),h={href:"https://sourceforge.net/projects/winflexbison/",target:"_blank",rel:"noopener noreferrer"},y=n("li",null,[s("After downloading, please rename the executables to "),n("code",null,"flex.exe"),s(" and "),n("code",null,"bison.exe"),s(" and add the directory containing them to the "),n("code",null,"PATH"),s(" environment variable.")],-1),w=n("p",null,[s("Install "),n("code",null,"Boost")],-1),f={href:"https://www.boost.org/users/download/",target:"_blank",rel:"noopener noreferrer"},T=n("li",null,[s("Then build "),n("code",null,"Boost"),s(" by executing "),n("code",null,"bootstrap.bat"),s(" and "),n("code",null,"b2.exe"),s(".")],-1),x=n("p",null,[s("Install "),n("code",null,"OpenSSL")],-1),_={href:"http://slproweb.com/products/Win32OpenSSL.html",target:"_blank",rel:"noopener noreferrer"},S=n("h3",{id:"compile",tabindex:"-1"},[n("a",{class:"header-anchor",href:"#compile","aria-hidden":"true"},"#"),s(" Compile")],-1),D={href:"https://iotdb.apache.org/Download/",target:"_blank",rel:"noopener noreferrer"},I=t(`<div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token function">git</span> clone https://github.com/apache/iotdb.git
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>The default dev branch is the master branch, If you want to use a released version (e.g. <code>0.13.3</code> or <code>1.2.0</code>), be sure to check out the corresponding tag:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code><span class="token function">git</span> checkout v0.13.3
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>(Please note that we are using a <code>Go</code> compatible naming schema for our release tags, which prefixes the version by a <code>v</code>)</p><p>Under the root path of iotdb:</p><ul><li><p>Mac &amp; Linux:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code>mvn package <span class="token parameter variable">-P</span> compile-cpp <span class="token parameter variable">-pl</span> example/client-cpp-example <span class="token parameter variable">-am</span> <span class="token parameter variable">-DskipTest</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div></li><li><p>Windows:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code>mvn package <span class="token parameter variable">-P</span> compile-cpp <span class="token parameter variable">-pl</span> iotdb-client/client-cpp,iotdb-core/datanode,example/client-cpp-example <span class="token parameter variable">-am</span> <span class="token parameter variable">-Dcmake.generator</span><span class="token operator">=</span><span class="token string">&quot;your cmake generator&quot;</span> <span class="token parameter variable">-Dboost.include.dir</span><span class="token operator">=</span><span class="token variable">\${your boost header folder}</span> <span class="token parameter variable">-Dboost.library.dir</span><span class="token operator">=</span><span class="token variable">\${your boost lib (stage) folder}</span> <span class="token parameter variable">-DskipTests</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>When building the client-cpp project, use the <code>-Dcmake.generator=&quot;&quot;</code> option to specify a Cmake generator. E.g. <code>-Dcmake.generator=&quot;Visual Studio 16 2019&quot;</code> (<code>cmake --help</code> shows a long list of supported Cmake generators.)</li><li>To help CMake find your Boost libraries on windows, you should also append <code>-DboostIncludeDir=&quot;C:\\Program Files (x86)\\boost_1_78_0&quot; -DboostLibraryDir=&quot;C:\\Program Files (x86)\\boost_1_78_0\\stage\\lib&quot;</code> to your mvn build command.<br> \`\`</li></ul></li></ul><p>As soon as the compilation finishes successfully, the packaged zip file will be placed under <code>client-cpp/target/client-cpp-1.3.0-SNAPSHOT-cpp-\${os}.zip</code></p><h2 id="native-apis" tabindex="-1"><a class="header-anchor" href="#native-apis" aria-hidden="true">#</a> Native APIs</h2><p>Here we demonstrate the most commonly used interfaces and their parameters in the Native API:</p><h3 id="initialization" tabindex="-1"><a class="header-anchor" href="#initialization" aria-hidden="true">#</a> Initialization</h3><ul><li><p>Open a Session:</p><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">open</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> 
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div></li><li><p>Open a session, with a parameter controlling if RPC compression should be used:</p><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">open</span><span class="token punctuation">(</span><span class="token keyword">bool</span> enableRPCCompression<span class="token punctuation">)</span><span class="token punctuation">;</span> 
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Notice: The RPC compression setting of the client is required to match that of the IoTDB server</p></li><li><p>Close a session:</p><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> 
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div></li></ul><h3 id="data-definition-interface-ddl" tabindex="-1"><a class="header-anchor" href="#data-definition-interface-ddl" aria-hidden="true">#</a> Data Definition Interface (DDL)</h3><h4 id="database-management" tabindex="-1"><a class="header-anchor" href="#database-management" aria-hidden="true">#</a> Database Management</h4><ul><li>Create database:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">setStorageGroup</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>storageGroupId<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Delete one or several databases:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">deleteStorageGroup</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>storageGroup<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">void</span> <span class="token function">deleteStorageGroups</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>storageGroups<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><h4 id="timeseries-management" tabindex="-1"><a class="header-anchor" href="#timeseries-management" aria-hidden="true">#</a> Timeseries Management</h4><ul><li>Create one or multiple timeseries:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">createTimeseries</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>path<span class="token punctuation">,</span> TSDataType<span class="token double-colon punctuation">::</span>TSDataType dataType<span class="token punctuation">,</span> TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding encoding<span class="token punctuation">,</span>
                          CompressionType<span class="token double-colon punctuation">::</span>CompressionType compressor<span class="token punctuation">)</span><span class="token punctuation">;</span>
                          
<span class="token keyword">void</span> <span class="token function">createMultiTimeseries</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>paths<span class="token punctuation">,</span>
                           <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>dataTypes<span class="token punctuation">,</span>
                           <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>encodings<span class="token punctuation">,</span>
                           <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>compressors<span class="token punctuation">,</span>
                           std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>map<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token punctuation">,</span> std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">*</span>propsList<span class="token punctuation">,</span>
                           std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>map<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token punctuation">,</span> std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">*</span>tagsList<span class="token punctuation">,</span>
                           std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>map<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token punctuation">,</span> std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">*</span>attributesList<span class="token punctuation">,</span>
                           std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">*</span>measurementAliasList<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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>Create aligned timeseries:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">createAlignedTimeseries</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>deviceId<span class="token punctuation">,</span>
                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span>
                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>dataTypes<span class="token punctuation">,</span>
                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>encodings<span class="token punctuation">,</span>
                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>compressors<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Delete one or several timeseries:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">deleteTimeseries</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">void</span> <span class="token function">deleteTimeseries</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>paths<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Check whether a specific timeseries exists:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">bool</span> <span class="token function">checkTimeseriesExists</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h4 id="schema-template" tabindex="-1"><a class="header-anchor" href="#schema-template" aria-hidden="true">#</a> Schema Template</h4><ul><li>Create a schema template:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">createSchemaTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> Template <span class="token operator">&amp;</span>templ<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Set the schema template named <code>templateName</code> at path <code>prefixPath</code>:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">setSchemaTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>prefix_path<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Unset the schema template:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">unsetSchemaTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>prefix_path<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>After a schema template was created, you can edit the template with following functions:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token comment">// Add aligned measurements to a template</span>
<span class="token keyword">void</span> <span class="token function">addAlignedMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">,</span>
                                      <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span>
                                      <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>dataTypes<span class="token punctuation">,</span>
                                      <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>encodings<span class="token punctuation">,</span>
                                      <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>compressors<span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token comment">// Add one aligned measurement to a template</span>
<span class="token keyword">void</span> <span class="token function">addAlignedMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">,</span>
                                      <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>measurement<span class="token punctuation">,</span>
                                      TSDataType<span class="token double-colon punctuation">::</span>TSDataType dataType<span class="token punctuation">,</span>
                                      TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding encoding<span class="token punctuation">,</span>
                                      CompressionType<span class="token double-colon punctuation">::</span>CompressionType compressor<span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token comment">// Add unaligned measurements to a template</span>
<span class="token keyword">void</span> <span class="token function">addUnalignedMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">,</span>
                                        <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span>
                                        <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>dataTypes<span class="token punctuation">,</span>
                                        <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>encodings<span class="token punctuation">,</span>
                                        <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>CompressionType<span class="token double-colon punctuation">::</span>CompressionType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>compressors<span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token comment">// Add one unaligned measurement to a template</span>
<span class="token keyword">void</span> <span class="token function">addUnalignedMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">,</span>
                                        <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>measurement<span class="token punctuation">,</span>
                                        TSDataType<span class="token double-colon punctuation">::</span>TSDataType dataType<span class="token punctuation">,</span>
                                        TSEncoding<span class="token double-colon punctuation">::</span>TSEncoding encoding<span class="token punctuation">,</span>
                                        CompressionType<span class="token double-colon punctuation">::</span>CompressionType compressor<span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token comment">// Delete a node in template and its children</span>
<span class="token keyword">void</span> <span class="token function">deleteNodeInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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>You can query schema templates with these APIs:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token comment">// Return the amount of measurements inside a template</span>
<span class="token keyword">int</span> <span class="token function">countMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token comment">// Return true if path points to a measurement, otherwise returne false</span>
<span class="token keyword">bool</span> <span class="token function">isMeasurementInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token comment">// Return true if path exists in template, otherwise return false</span>
<span class="token keyword">bool</span> <span class="token function">isPathExistInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>path<span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token comment">// Return all measurements paths inside template</span>
std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token function">showMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token comment">// Return all measurements paths under the designated patter inside template</span>
std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token function">showMeasurementsInTemplate</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>template_name<span class="token punctuation">,</span> <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>pattern<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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-manipulation-interface-dmi" tabindex="-1"><a class="header-anchor" href="#data-manipulation-interface-dmi" aria-hidden="true">#</a> Data Manipulation Interface (DMI)</h3><h4 id="insert" tabindex="-1"><a class="header-anchor" href="#insert" aria-hidden="true">#</a> Insert</h4><ul><li>Insert one record, which contains multiple measurement value of a given device and timestamp:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertRecord</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>deviceId<span class="token punctuation">,</span> 
                  <span class="token keyword">int64_t</span> time<span class="token punctuation">,</span> 
                  <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span>
                  <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>values<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Insert multiple Records for multiple devices (With type info in the <code>typesList</code> parameter the server doesn&#39;t need to do type inference, which results in better performance):</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertRecords</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>deviceIds<span class="token punctuation">,</span>
                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span>
                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span>
                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><ul><li>Insert multiple Records for the same device:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertRecordsOfOneDevice</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>deviceId<span class="token punctuation">,</span>
                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span>
                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span>
                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>All of the above versions require the server to figure out the data-types of each value, which comes with quite a performance-cost, therefore all of the above are also available in a version without type-inference:</p><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertRecord</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>deviceId<span class="token punctuation">,</span> 
                  <span class="token keyword">int64_t</span> time<span class="token punctuation">,</span> 
                  <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span>
                  <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>types<span class="token punctuation">,</span>
                  <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>values<span class="token punctuation">)</span><span class="token punctuation">;</span>


<span class="token keyword">void</span> <span class="token function">insertRecords</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>deviceIds<span class="token punctuation">,</span>
                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span>
                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span>
                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>typesList<span class="token punctuation">,</span>
                   <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span>


<span class="token keyword">void</span> <span class="token function">insertRecordsOfOneDevice</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>deviceId<span class="token punctuation">,</span>
                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span>
                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span>
                              std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>typesList<span class="token punctuation">,</span>
                              <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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>For even better performance, it is recommended to use Tablets to help improve write efficiency.</p><ul><li>Insert a Tablet，which inserts multiple rows of data for a given device. Each row has the same structure: <ul><li>Better write performance</li><li>Support null values: Fill the null value with any value, and then mark the null value via BitMap</li></ul></li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertTablet</span><span class="token punctuation">(</span>Tablet <span class="token operator">&amp;</span>tablet<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><ul><li>Insert multiple Tablets</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">insertTablets</span><span class="token punctuation">(</span>std<span class="token double-colon punctuation">::</span>unordered_map<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token punctuation">,</span> Tablet <span class="token operator">*</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>tablets<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h4 id="insert-data-into-aligned-timeseries" tabindex="-1"><a class="header-anchor" href="#insert-data-into-aligned-timeseries" aria-hidden="true">#</a> Insert data into Aligned Timeseries</h4><p>The insertion of aligned timeseries is performed by functions such as <code>insertAlignedXXX</code> however semantically they align to the non-aligned versions of the previous chapter:</p><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code>    <span class="token keyword">void</span> <span class="token function">insertAlignedRecord</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>deviceId<span class="token punctuation">,</span>
                             <span class="token keyword">int64_t</span> time<span class="token punctuation">,</span> 
                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span>
                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>values<span class="token punctuation">)</span><span class="token punctuation">;</span>

    <span class="token keyword">void</span> <span class="token function">insertAlignedRecord</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>deviceId<span class="token punctuation">,</span> 
                             <span class="token keyword">int64_t</span> time<span class="token punctuation">,</span> 
                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>measurements<span class="token punctuation">,</span>
                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>types<span class="token punctuation">,</span>
                             <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>values<span class="token punctuation">)</span><span class="token punctuation">;</span>

    <span class="token keyword">void</span> <span class="token function">insertAlignedRecords</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>deviceIds<span class="token punctuation">,</span>
                              <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span>
                              <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span>
                              <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span>

    <span class="token keyword">void</span> <span class="token function">insertAlignedRecords</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>deviceIds<span class="token punctuation">,</span>
                              <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span>
                              <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span>
                              <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>typesList<span class="token punctuation">,</span>
                              <span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span>

    <span class="token keyword">void</span> <span class="token function">insertAlignedRecordsOfOneDevice</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>deviceId<span class="token punctuation">,</span>
                                         std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span>
                                         std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span>
                                         std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>typesList<span class="token punctuation">,</span>
                                         std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">)</span><span class="token punctuation">;</span>

    <span class="token keyword">void</span> <span class="token function">insertAlignedRecordsOfOneDevice</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>deviceId<span class="token punctuation">,</span>
                                         std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">int64_t</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>times<span class="token punctuation">,</span>
                                         std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>measurementsList<span class="token punctuation">,</span>
                                         std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>TSDataType<span class="token double-colon punctuation">::</span>TSDataType<span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>typesList<span class="token punctuation">,</span>
                                         std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span><span class="token keyword">char</span> <span class="token operator">*</span><span class="token operator">&gt;&gt;</span> <span class="token operator">&amp;</span>valuesList<span class="token punctuation">,</span>
                                         <span class="token keyword">bool</span> sorted<span class="token punctuation">)</span><span class="token punctuation">;</span>

    <span class="token keyword">void</span> <span class="token function">insertAlignedTablet</span><span class="token punctuation">(</span>Tablet <span class="token operator">&amp;</span>tablet<span class="token punctuation">)</span><span class="token punctuation">;</span>

    <span class="token keyword">void</span> <span class="token function">insertAlignedTablet</span><span class="token punctuation">(</span>Tablet <span class="token operator">&amp;</span>tablet<span class="token punctuation">,</span> 
                             <span class="token keyword">bool</span> sorted<span class="token punctuation">)</span><span class="token punctuation">;</span>

    <span class="token keyword">void</span> <span class="token function">insertAlignedTablets</span><span class="token punctuation">(</span>std<span class="token double-colon punctuation">::</span>unordered_map<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token punctuation">,</span> Tablet <span class="token operator">*</span><span class="token operator">&gt;</span> <span class="token operator">&amp;</span>tablets<span class="token punctuation">,</span> 
                              <span class="token keyword">bool</span> sorted <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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" tabindex="-1"><a class="header-anchor" href="#delete" aria-hidden="true">#</a> Delete</h4><ul><li>Delete data with timestamps before or equal to a given timestamp of one or several timeseries:</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">deleteData</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>path<span class="token punctuation">,</span> <span class="token keyword">int64_t</span> time<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">void</span> <span class="token function">deleteData</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>vector<span class="token operator">&lt;</span>std<span class="token double-colon punctuation">::</span>string<span class="token operator">&gt;</span> <span class="token operator">&amp;</span>deviceId<span class="token punctuation">,</span> <span class="token keyword">int64_t</span> time<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="iotdb-sql-interface" tabindex="-1"><a class="header-anchor" href="#iotdb-sql-interface" aria-hidden="true">#</a> IoTDB-SQL Interface</h3><ul><li>Execute query statement</li></ul><p>Query statements return data.</p><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code>unique_ptr<span class="token operator">&lt;</span>SessionDataSet<span class="token operator">&gt;</span> <span class="token function">executeQueryStatement</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>sql<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Non-Query statements don&#39;t return data (Delete, Create, ... statements)</p><ul><li>Execute non query statement</li></ul><div class="language-cpp line-numbers-mode" data-ext="cpp"><pre class="language-cpp"><code><span class="token keyword">void</span> <span class="token function">executeNonQueryStatement</span><span class="token punctuation">(</span><span class="token keyword">const</span> std<span class="token double-colon punctuation">::</span>string <span class="token operator">&amp;</span>sql<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><h2 id="examples" tabindex="-1"><a class="header-anchor" href="#examples" aria-hidden="true">#</a> Examples</h2><p>The sample code for using these interfaces is located in:</p><ul><li><code>example/client-cpp-example/src/SessionExample.cpp</code></li><li><code>example/client-cpp-example/src/AlignedTimeseriesSessionExample.cpp</code></li></ul><p>As soon as the compilation finishes, the example project will be located at <code>example/client-cpp-example/target</code></p><h2 id="faq" tabindex="-1"><a class="header-anchor" href="#faq" aria-hidden="true">#</a> FAQ</h2><h3 id="on-mac" tabindex="-1"><a class="header-anchor" href="#on-mac" aria-hidden="true">#</a> on Mac</h3><p>If errors occur when compiling thrift source code, try to downgrade your xcode-commandline from 12 to 11.5</p>`,72),C={href:"https://stackoverflow.com/questions/63592445/ld-unsupported-tapi-file-type-tapi-tbd-in-yaml-file/65518087#65518087",target:"_blank",rel:"noopener noreferrer"},A=t(`<h3 id="on-windows" tabindex="-1"><a class="header-anchor" href="#on-windows" aria-hidden="true">#</a> on Windows</h3><p>When Building Thrift and downloading packages via &quot;wget&quot;, a possible annoying issue may occur with<br> error message looks like:</p><div class="language-bash line-numbers-mode" data-ext="sh"><pre class="language-bash"><code>Failed to delete cached <span class="token function">file</span> C:<span class="token punctuation">\\</span>Users<span class="token punctuation">\\</span>Administrator<span class="token punctuation">\\</span>.m2<span class="token punctuation">\\</span>repository<span class="token punctuation">\\</span>.cache<span class="token punctuation">\\</span>download-maven-plugin<span class="token punctuation">\\</span>index.ser
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div></div></div><p>Possible fixes:</p><ul><li>Try to delete the &quot;.m2\\repository.cache&quot; directory and try again.</li><li>Add &quot;&lt;skipCache&gt;true&lt;/skipCache&gt;&quot; configuration to the download-maven-plugin maven phase that complains this error.</li></ul>`,5);function L(q,E){const a=p("ExternalLinkIcon");return l(),c("div",null,[i(`

    Licensed to the Apache Software Foundation (ASF) under one
    or more contributor license agreements.  See the NOTICE file
    distributed with this work for additional information
    regarding copyright ownership.  The ASF licenses this file
    to you under the Apache License, Version 2.0 (the
    "License"); you may not use this file except in compliance
    with the License.  You may obtain a copy of the License at
    
        http://www.apache.org/licenses/LICENSE-2.0
    
    Unless required by applicable law or agreed to in writing,
    software distributed under the License is distributed on an
    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, either express or implied.  See the License for the
    specific language governing permissions and limitations
    under the License.

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