import{_ as s,c as a,b as t,o as p}from"./app-CftaLYVE.js";const e={};function c(o,n){return p(),a("div",null,n[0]||(n[0]=[t(`<h2 id="jdbc-not-recommend" tabindex="-1"><a class="header-anchor" href="#jdbc-not-recommend"><span>JDBC (Not Recommend)</span></a></h2><p><em>NOTICE: CURRENTLY, JDBC IS USED FOR CONNECTING SOME THIRD-PART TOOLS.<br> IT CAN NOT PROVIDE HIGH THROUGHPUT FOR WRITE OPERATIONS.<br> PLEASE USE <a href="https://iotdb.apache.org/UserGuide/Master/API/Programming-Java-Native-API.html" target="_blank" rel="noopener noreferrer">JAVA NATIVE API</a> INSTEAD</em></p><h3 id="dependencies" tabindex="-1"><a class="header-anchor" href="#dependencies"><span>Dependencies</span></a></h3><ul><li>JDK &gt;= 1.8</li><li>Maven &gt;= 3.6</li></ul><h3 id="installation" tabindex="-1"><a class="header-anchor" href="#installation"><span>Installation</span></a></h3><p>In root directory:</p><div class="language-bash line-numbers-mode" data-highlighter="prismjs" data-ext="sh" data-title="sh"><pre><code><span class="line">mvn clean <span class="token function">install</span> <span class="token parameter variable">-pl</span> jdbc <span class="token parameter variable">-am</span> <span class="token parameter variable">-Dmaven.test.skip</span><span class="token operator">=</span>true</span>
<span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><h3 id="use-iotdb-jdbc-with-maven" tabindex="-1"><a class="header-anchor" href="#use-iotdb-jdbc-with-maven"><span>Use IoTDB JDBC with Maven</span></a></h3><div class="language-xml line-numbers-mode" data-highlighter="prismjs" data-ext="xml" data-title="xml"><pre><code><span class="line"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependencies</span><span class="token punctuation">&gt;</span></span></span>
<span class="line">    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependency</span><span class="token punctuation">&gt;</span></span></span>
<span class="line">      <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">&gt;</span></span>org.apache.iotdb<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">&gt;</span></span></span>
<span class="line">      <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">&gt;</span></span>iotdb-jdbc<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">&gt;</span></span></span>
<span class="line">      <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>version</span><span class="token punctuation">&gt;</span></span>0.13.4<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>version</span><span class="token punctuation">&gt;</span></span></span>
<span class="line">    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependency</span><span class="token punctuation">&gt;</span></span></span>
<span class="line"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependencies</span><span class="token punctuation">&gt;</span></span></span>
<span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="coding-examples" tabindex="-1"><a class="header-anchor" href="#coding-examples"><span>Coding Examples</span></a></h3><p>This chapter provides an example of how to open a database connection, execute a SQL query, and display the results.</p><p>It requires including the packages containing the JDBC classes needed for database programming.</p><p><strong>NOTE: For faster insertion, the insertTablet() in Session is recommended.</strong></p><div class="language-java line-numbers-mode" data-highlighter="prismjs" data-ext="java" data-title="java"><pre><code><span class="line"><span class="token keyword">import</span> <span class="token import"><span class="token namespace">java<span class="token punctuation">.</span>sql<span class="token punctuation">.</span></span><span class="token operator">*</span></span><span class="token punctuation">;</span></span>
<span class="line"><span class="token keyword">import</span> <span class="token import"><span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>iotdb<span class="token punctuation">.</span>jdbc<span class="token punctuation">.</span></span><span class="token class-name">IoTDBSQLException</span></span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line"><span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">JDBCExample</span> <span class="token punctuation">{</span></span>
<span class="line">  <span class="token doc-comment comment">/**</span>
<span class="line">   * Before executing a SQL statement with a Statement object, you need to create a Statement object using the createStatement() method of the Connection object.</span>
<span class="line">   * After creating a Statement object, you can use its execute() method to execute a SQL statement</span>
<span class="line">   * Finally, remember to close the &#39;statement&#39; and &#39;connection&#39; objects by using their close() method</span>
<span class="line">   * For statements with query results, we can use the getResultSet() method of the Statement object to get the result set.</span>
<span class="line">   */</span></span>
<span class="line">  <span class="token keyword">public</span> <span class="token keyword">static</span> <span class="token keyword">void</span> <span class="token function">main</span><span class="token punctuation">(</span><span class="token class-name">String</span><span class="token punctuation">[</span><span class="token punctuation">]</span> args<span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">SQLException</span> <span class="token punctuation">{</span></span>
<span class="line">    <span class="token class-name">Connection</span> connection <span class="token operator">=</span> <span class="token function">getConnection</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token keyword">if</span> <span class="token punctuation">(</span>connection <span class="token operator">==</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span></span>
<span class="line">      <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">&quot;get connection defeat&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">      <span class="token keyword">return</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token punctuation">}</span></span>
<span class="line">    <span class="token class-name">Statement</span> statement <span class="token operator">=</span> connection<span class="token punctuation">.</span><span class="token function">createStatement</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token comment">//Create storage group</span></span>
<span class="line">    <span class="token keyword">try</span> <span class="token punctuation">{</span></span>
<span class="line">      statement<span class="token punctuation">.</span><span class="token function">execute</span><span class="token punctuation">(</span><span class="token string">&quot;SET STORAGE GROUP TO root.demo&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token punctuation">}</span><span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">IoTDBSQLException</span> e<span class="token punctuation">)</span><span class="token punctuation">{</span></span>
<span class="line">      <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>e<span class="token punctuation">.</span><span class="token function">getMessage</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token punctuation">}</span></span>
<span class="line"></span>
<span class="line"></span>
<span class="line">    <span class="token comment">//Show storage group</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">execute</span><span class="token punctuation">(</span><span class="token string">&quot;SHOW STORAGE GROUP&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token function">outputResult</span><span class="token punctuation">(</span>statement<span class="token punctuation">.</span><span class="token function">getResultSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line">    <span class="token comment">//Create time series</span></span>
<span class="line">    <span class="token comment">//Different data type has different encoding methods. Here use INT32 as an example</span></span>
<span class="line">    <span class="token keyword">try</span> <span class="token punctuation">{</span></span>
<span class="line">      statement<span class="token punctuation">.</span><span class="token function">execute</span><span class="token punctuation">(</span><span class="token string">&quot;CREATE TIMESERIES root.demo.s0 WITH DATATYPE=INT32,ENCODING=RLE;&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token punctuation">}</span><span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">IoTDBSQLException</span> e<span class="token punctuation">)</span><span class="token punctuation">{</span></span>
<span class="line">      <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>e<span class="token punctuation">.</span><span class="token function">getMessage</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token punctuation">}</span></span>
<span class="line">    <span class="token comment">//Show time series</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">execute</span><span class="token punctuation">(</span><span class="token string">&quot;SHOW TIMESERIES root.demo&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token function">outputResult</span><span class="token punctuation">(</span>statement<span class="token punctuation">.</span><span class="token function">getResultSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token comment">//Show devices</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">execute</span><span class="token punctuation">(</span><span class="token string">&quot;SHOW DEVICES&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token function">outputResult</span><span class="token punctuation">(</span>statement<span class="token punctuation">.</span><span class="token function">getResultSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token comment">//Count time series</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">execute</span><span class="token punctuation">(</span><span class="token string">&quot;COUNT TIMESERIES root&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token function">outputResult</span><span class="token punctuation">(</span>statement<span class="token punctuation">.</span><span class="token function">getResultSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token comment">//Count nodes at the given level</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">execute</span><span class="token punctuation">(</span><span class="token string">&quot;COUNT NODES root LEVEL=3&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token function">outputResult</span><span class="token punctuation">(</span>statement<span class="token punctuation">.</span><span class="token function">getResultSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token comment">//Count timeseries group by each node at the given level</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">execute</span><span class="token punctuation">(</span><span class="token string">&quot;COUNT TIMESERIES root GROUP BY LEVEL=3&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token function">outputResult</span><span class="token punctuation">(</span>statement<span class="token punctuation">.</span><span class="token function">getResultSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    </span>
<span class="line"></span>
<span class="line">    <span class="token comment">//Execute insert statements in batch</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">addBatch</span><span class="token punctuation">(</span><span class="token string">&quot;insert into root.demo(timestamp,s0) values(1,1);&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">addBatch</span><span class="token punctuation">(</span><span class="token string">&quot;insert into root.demo(timestamp,s0) values(1,1);&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">addBatch</span><span class="token punctuation">(</span><span class="token string">&quot;insert into root.demo(timestamp,s0) values(2,15);&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">addBatch</span><span class="token punctuation">(</span><span class="token string">&quot;insert into root.demo(timestamp,s0) values(2,17);&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">addBatch</span><span class="token punctuation">(</span><span class="token string">&quot;insert into root.demo(timestamp,s0) values(4,12);&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">executeBatch</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">clearBatch</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line">    <span class="token comment">//Full query statement</span></span>
<span class="line">    <span class="token class-name">String</span> sql <span class="token operator">=</span> <span class="token string">&quot;select * from root.demo&quot;</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token class-name">ResultSet</span> resultSet <span class="token operator">=</span> statement<span class="token punctuation">.</span><span class="token function">executeQuery</span><span class="token punctuation">(</span>sql<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">&quot;sql: &quot;</span> <span class="token operator">+</span> sql<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token function">outputResult</span><span class="token punctuation">(</span>resultSet<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line">    <span class="token comment">//Exact query statement</span></span>
<span class="line">    sql <span class="token operator">=</span> <span class="token string">&quot;select s0 from root.demo where time = 4;&quot;</span><span class="token punctuation">;</span></span>
<span class="line">    resultSet<span class="token operator">=</span> statement<span class="token punctuation">.</span><span class="token function">executeQuery</span><span class="token punctuation">(</span>sql<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">&quot;sql: &quot;</span> <span class="token operator">+</span> sql<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token function">outputResult</span><span class="token punctuation">(</span>resultSet<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line">    <span class="token comment">//Time range query</span></span>
<span class="line">    sql <span class="token operator">=</span> <span class="token string">&quot;select s0 from root.demo where time &gt;= 2 and time &lt; 5;&quot;</span><span class="token punctuation">;</span></span>
<span class="line">    resultSet <span class="token operator">=</span> statement<span class="token punctuation">.</span><span class="token function">executeQuery</span><span class="token punctuation">(</span>sql<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">&quot;sql: &quot;</span> <span class="token operator">+</span> sql<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token function">outputResult</span><span class="token punctuation">(</span>resultSet<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line">    <span class="token comment">//Aggregate query</span></span>
<span class="line">    sql <span class="token operator">=</span> <span class="token string">&quot;select count(s0) from root.demo;&quot;</span><span class="token punctuation">;</span></span>
<span class="line">    resultSet <span class="token operator">=</span> statement<span class="token punctuation">.</span><span class="token function">executeQuery</span><span class="token punctuation">(</span>sql<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">&quot;sql: &quot;</span> <span class="token operator">+</span> sql<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token function">outputResult</span><span class="token punctuation">(</span>resultSet<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line">    <span class="token comment">//Delete time series</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">execute</span><span class="token punctuation">(</span><span class="token string">&quot;delete timeseries root.demo.s0&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line">    <span class="token comment">//close connection</span></span>
<span class="line">    statement<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    connection<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">  <span class="token punctuation">}</span></span>
<span class="line"></span>
<span class="line">  <span class="token keyword">public</span> <span class="token keyword">static</span> <span class="token class-name">Connection</span> <span class="token function">getConnection</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span></span>
<span class="line">    <span class="token comment">// JDBC driver name and database URL</span></span>
<span class="line">    <span class="token class-name">String</span> driver <span class="token operator">=</span> <span class="token string">&quot;org.apache.iotdb.jdbc.IoTDBDriver&quot;</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token class-name">String</span> url <span class="token operator">=</span> <span class="token string">&quot;jdbc:iotdb://127.0.0.1:6667/&quot;</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token comment">// set rpc compress mode</span></span>
<span class="line">    <span class="token comment">// String url = &quot;jdbc:iotdb://127.0.0.1:6667?rpc_compress=true&quot;;</span></span>
<span class="line"></span>
<span class="line">    <span class="token comment">// Database credentials</span></span>
<span class="line">    <span class="token class-name">String</span> username <span class="token operator">=</span> <span class="token string">&quot;root&quot;</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token class-name">String</span> password <span class="token operator">=</span> <span class="token string">&quot;root&quot;</span><span class="token punctuation">;</span></span>
<span class="line"></span>
<span class="line">    <span class="token class-name">Connection</span> connection <span class="token operator">=</span> <span class="token keyword">null</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token keyword">try</span> <span class="token punctuation">{</span></span>
<span class="line">      <span class="token class-name">Class</span><span class="token punctuation">.</span><span class="token function">forName</span><span class="token punctuation">(</span>driver<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">      connection <span class="token operator">=</span> <span class="token class-name">DriverManager</span><span class="token punctuation">.</span><span class="token function">getConnection</span><span class="token punctuation">(</span>url<span class="token punctuation">,</span> username<span class="token punctuation">,</span> password<span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">ClassNotFoundException</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span></span>
<span class="line">      e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">SQLException</span> e<span class="token punctuation">)</span> <span class="token punctuation">{</span></span>
<span class="line">      e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token punctuation">}</span></span>
<span class="line">    <span class="token keyword">return</span> connection<span class="token punctuation">;</span></span>
<span class="line">  <span class="token punctuation">}</span></span>
<span class="line"></span>
<span class="line">  <span class="token doc-comment comment">/**</span>
<span class="line">   * This is an example of outputting the results in the ResultSet</span>
<span class="line">   */</span></span>
<span class="line">  <span class="token keyword">private</span> <span class="token keyword">static</span> <span class="token keyword">void</span> <span class="token function">outputResult</span><span class="token punctuation">(</span><span class="token class-name">ResultSet</span> resultSet<span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">SQLException</span> <span class="token punctuation">{</span></span>
<span class="line">    <span class="token keyword">if</span> <span class="token punctuation">(</span>resultSet <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span></span>
<span class="line">      <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">&quot;--------------------------&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">      <span class="token keyword">final</span> <span class="token class-name">ResultSetMetaData</span> metaData <span class="token operator">=</span> resultSet<span class="token punctuation">.</span><span class="token function">getMetaData</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">      <span class="token keyword">final</span> <span class="token keyword">int</span> columnCount <span class="token operator">=</span> metaData<span class="token punctuation">.</span><span class="token function">getColumnCount</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">      <span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">int</span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator">&lt;</span> columnCount<span class="token punctuation">;</span> i<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token punctuation">{</span></span>
<span class="line">        <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">print</span><span class="token punctuation">(</span>metaData<span class="token punctuation">.</span><span class="token function">getColumnLabel</span><span class="token punctuation">(</span>i <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token string">&quot; &quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">      <span class="token punctuation">}</span></span>
<span class="line">      <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">      <span class="token keyword">while</span> <span class="token punctuation">(</span>resultSet<span class="token punctuation">.</span><span class="token function">next</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span></span>
<span class="line">        <span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">int</span> i <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">;</span> <span class="token punctuation">;</span> i<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token punctuation">{</span></span>
<span class="line">          <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">print</span><span class="token punctuation">(</span>resultSet<span class="token punctuation">.</span><span class="token function">getString</span><span class="token punctuation">(</span>i<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">          <span class="token keyword">if</span> <span class="token punctuation">(</span>i <span class="token operator">&lt;</span> columnCount<span class="token punctuation">)</span> <span class="token punctuation">{</span></span>
<span class="line">            <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">print</span><span class="token punctuation">(</span><span class="token string">&quot;, &quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">          <span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span></span>
<span class="line">            <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">            <span class="token keyword">break</span><span class="token punctuation">;</span></span>
<span class="line">          <span class="token punctuation">}</span></span>
<span class="line">        <span class="token punctuation">}</span></span>
<span class="line">      <span class="token punctuation">}</span></span>
<span class="line">      <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">&quot;--------------------------\\n&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span>
<span class="line">    <span class="token punctuation">}</span></span>
<span class="line">  <span class="token punctuation">}</span></span>
<span class="line"><span class="token punctuation">}</span></span>
<span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div 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class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="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 parameter <code>version</code> can be used in the url:</p><div class="language-java line-numbers-mode" data-highlighter="prismjs" data-ext="java" data-title="java"><pre><code><span class="line"><span class="token class-name">String</span> url <span class="token operator">=</span> <span class="token string">&quot;jdbc:iotdb://127.0.0.1:6667?version=V_0_12&quot;</span><span class="token punctuation">;</span></span>
<span class="line"></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div></div></div><p>The parameter <code>version</code> represents the SQL semantic version used by the client, which is used to be compatible with the SQL semantics of 0.12 when upgrading 0.13. The possible values are: <code>V_0_12</code>, <code>V_0_13</code>.</p>`,17)]))}const i=s(e,[["render",c],["__file","Programming-JDBC.html.vue"]]),u=JSON.parse('{"path":"/UserGuide/V0.13.x/API/Programming-JDBC.html","title":"","lang":"en-US","frontmatter":{"description":"JDBC (Not Recommend) NOTICE: CURRENTLY, JDBC IS USED FOR CONNECTING SOME THIRD-PART TOOLS. IT CAN NOT PROVIDE HIGH THROUGHPUT FOR WRITE OPERATIONS. PLEASE USE JAVA NATIVE API IN...","head":[["link",{"rel":"alternate","hreflang":"zh-cn","href":"https://iotdb.apache.org/zh/UserGuide/V0.13.x/API/Programming-JDBC.html"}],["meta",{"property":"og:url","content":"https://iotdb.apache.org/UserGuide/V0.13.x/API/Programming-JDBC.html"}],["meta",{"property":"og:site_name","content":"IoTDB Website"}],["meta",{"property":"og:description","content":"JDBC (Not Recommend) NOTICE: CURRENTLY, JDBC IS USED FOR CONNECTING SOME THIRD-PART TOOLS. IT CAN NOT PROVIDE HIGH THROUGHPUT FOR WRITE OPERATIONS. PLEASE USE JAVA NATIVE API IN..."}],["meta",{"property":"og:type","content":"article"}],["meta",{"property":"og:locale","content":"en-US"}],["meta",{"property":"og:locale:alternate","content":"zh-CN"}],["meta",{"property":"og:updated_time","content":"2024-08-12T04:20:54.000Z"}],["meta",{"property":"article:modified_time","content":"2024-08-12T04:20:54.000Z"}],["script",{"type":"application/ld+json"},"{\\"@context\\":\\"https://schema.org\\",\\"@type\\":\\"Article\\",\\"headline\\":\\"\\",\\"image\\":[\\"\\"],\\"dateModified\\":\\"2024-08-12T04:20:54.000Z\\",\\"author\\":[]}"]]},"headers":[{"level":2,"title":"JDBC (Not Recommend)","slug":"jdbc-not-recommend","link":"#jdbc-not-recommend","children":[{"level":3,"title":"Dependencies","slug":"dependencies","link":"#dependencies","children":[]},{"level":3,"title":"Installation","slug":"installation","link":"#installation","children":[]},{"level":3,"title":"Use IoTDB JDBC with Maven","slug":"use-iotdb-jdbc-with-maven","link":"#use-iotdb-jdbc-with-maven","children":[]},{"level":3,"title":"Coding Examples","slug":"coding-examples","link":"#coding-examples","children":[]}]}],"git":{"createdTime":1688958677000,"updatedTime":1723436454000,"contributors":[{"name":"CritasWang","email":"critas@outlook.com","commits":1},{"name":"W1y1r","email":"150988475+W1y1r@users.noreply.github.com","commits":1},{"name":"Zhijia Cao","email":"caozhijia@126.com","commits":1}]},"readingTime":{"minutes":2.56,"words":768},"filePathRelative":"UserGuide/V0.13.x/API/Programming-JDBC.md","localizedDate":"July 10, 2023","autoDesc":true}');export{i as comp,u as data};