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    <link rel="alternate" hreflang="en-us" href="https://iotdb.apache.org/UserGuide/V1.1.x/Syntax-Conventions/KeyValue-Pair.html"><meta property="og:url" content="https://iotdb.apache.org/zh/UserGuide/V1.1.x/Syntax-Conventions/KeyValue-Pair.html"><meta property="og:site_name" content="IoTDB Website"><meta property="og:description" content="键值对 键值对的键和值可以被定义为标识符或者常量。 下面将介绍键值对的使用场景。 触发器中表示触发器属性的键值对。参考示例语句中 WITH 后的属性键值对。 时间序列中用于表示标签和属性的键值对。 创建 Pipe 以及 PipeSink 时表示属性的键值对。"><meta property="og:type" content="article"><meta property="og:locale" content="zh-CN"><meta property="og:locale:alternate" content="en-US"><meta property="og:updated_time" content="2023-07-10T03:11:17.000Z"><meta property="article:modified_time" content="2023-07-10T03:11:17.000Z"><script type="application/ld+json">{"@context":"https://schema.org","@type":"Article","headline":"","image":[""],"dateModified":"2023-07-10T03:11:17.000Z","author":[]}</script><link rel="icon" href="/favicon.ico"><meta name="Description" content="Apache IoTDB: Time Series Database for IoT"><meta name="Keywords" content="TSDB, time series, time series database, IoTDB, IoT database, IoT data management,时序数据库, 时间序列管理, IoTDB, 物联网数据库, 实时数据库, 物联网数据管理, 物联网数据"><meta name="baidu-site-verification" content="wfKETzB3OT"><meta name="google-site-verification" content="mZWAoRY0yj_HAr-s47zHCGHzx5Ju-RVm5wDbPnwQYFo"><script type="text/javascript">
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       </script><title>IoTDB Website</title><meta name="description" content="键值对 键值对的键和值可以被定义为标识符或者常量。 下面将介绍键值对的使用场景。 触发器中表示触发器属性的键值对。参考示例语句中 WITH 后的属性键值对。 时间序列中用于表示标签和属性的键值对。 创建 Pipe 以及 PipeSink 时表示属性的键值对。">
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44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button><div class="arrow end"></div></div><div class="vp-toc-wrapper"><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#键值对">键值对</a></li><!----><!--]--></ul><div class="vp-toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!--[--><!----><!--]--><div class="theme-hope-content"><h2 id="键值对" tabindex="-1"><a class="header-anchor" href="#键值对"><span>键值对</span></a></h2><p><strong>键值对的键和值可以被定义为标识符或者常量。</strong></p><p>下面将介绍键值对的使用场景。</p><ul><li>触发器中表示触发器属性的键值对。参考示例语句中 WITH 后的属性键值对。</li></ul><div class="language-SQL line-numbers-mode" data-ext="SQL" data-title="SQL"><pre class="language-SQL"><code># 以字符串形式表示键值对
CREATE TRIGGER `alert-listener-sg1d1s1`
AFTER INSERT
ON root.sg1.d1.s1
AS &#39;org.apache.iotdb.db.engine.trigger.example.AlertListener&#39;
WITH (
  &#39;lo&#39; = &#39;0&#39;, 
  &#39;hi&#39; = &#39;100.0&#39;
)

# 以标识符和常量形式表示键值对
CREATE TRIGGER `alert-listener-sg1d1s1`
AFTER INSERT
ON root.sg1.d1.s1
AS &#39;org.apache.iotdb.db.engine.trigger.example.AlertListener&#39;
WITH (
  lo = 0, 
  hi = 100.0
)
</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><ul><li>时间序列中用于表示标签和属性的键值对。</li></ul><div class="language-sql line-numbers-mode" data-ext="sql" data-title="sql"><pre class="language-sql"><code><span class="token comment"># 创建时间序列时设定标签和属性，用字符串来表示键值对。</span>
<span class="token keyword">CREATE</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1<span class="token punctuation">(</span>temprature<span class="token punctuation">)</span> 
<span class="token keyword">WITH</span> datatype <span class="token operator">=</span> <span class="token keyword">FLOAT</span><span class="token punctuation">,</span> encoding <span class="token operator">=</span> RLE<span class="token punctuation">,</span> compression <span class="token operator">=</span> SNAPPY<span class="token punctuation">,</span> <span class="token string">&#39;max_point_number&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;5&#39;</span>
TAGS<span class="token punctuation">(</span><span class="token string">&#39;tag1&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;v1&#39;</span><span class="token punctuation">,</span> <span class="token string">&#39;tag2&#39;</span><span class="token operator">=</span> <span class="token string">&#39;v2&#39;</span><span class="token punctuation">)</span> ATTRIBUTES<span class="token punctuation">(</span><span class="token string">&#39;attr1&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;v1&#39;</span><span class="token punctuation">,</span> <span class="token string">&#39;attr2&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;v2&#39;</span><span class="token punctuation">)</span>

<span class="token comment"># 创建时间序列时设定标签和属性，用标识符和常量来表示键值对。</span>
<span class="token keyword">CREATE</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1<span class="token punctuation">(</span>temprature<span class="token punctuation">)</span> 
<span class="token keyword">WITH</span> datatype <span class="token operator">=</span> <span class="token keyword">FLOAT</span><span class="token punctuation">,</span> encoding <span class="token operator">=</span> RLE<span class="token punctuation">,</span> compression <span class="token operator">=</span> SNAPPY<span class="token punctuation">,</span> max_point_number <span class="token operator">=</span> <span class="token number">5</span>
TAGS<span class="token punctuation">(</span>tag1 <span class="token operator">=</span> v1<span class="token punctuation">,</span> tag2 <span class="token operator">=</span> v2<span class="token punctuation">)</span> ATTRIBUTES<span class="token punctuation">(</span>attr1 <span class="token operator">=</span> v1<span class="token punctuation">,</span> attr2 <span class="token operator">=</span> v2<span class="token punctuation">)</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-ext="sql" data-title="sql"><pre class="language-sql"><code><span class="token comment"># 修改时间序列的标签和属性</span>
<span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">SET</span> <span class="token string">&#39;newTag1&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;newV1&#39;</span><span class="token punctuation">,</span> <span class="token string">&#39;attr1&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;newV1&#39;</span>

<span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">SET</span> newTag1 <span class="token operator">=</span> newV1<span class="token punctuation">,</span> attr1 <span class="token operator">=</span> newV1
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-ext="sql" data-title="sql"><pre class="language-sql"><code><span class="token comment"># 修改标签名</span>
<span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">RENAME</span> <span class="token string">&#39;tag1&#39;</span> <span class="token keyword">TO</span> <span class="token string">&#39;newTag1&#39;</span>

<span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">RENAME</span> tag1 <span class="token keyword">TO</span> newTag1
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-ext="sql" data-title="sql"><pre class="language-sql"><code><span class="token comment"># 插入别名、标签、属性</span>
<span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 UPSERT 
ALIAS<span class="token operator">=</span><span class="token string">&#39;newAlias&#39;</span> TAGS<span class="token punctuation">(</span><span class="token string">&#39;tag2&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;newV2&#39;</span><span class="token punctuation">,</span> <span class="token string">&#39;tag3&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;v3&#39;</span><span class="token punctuation">)</span> ATTRIBUTES<span class="token punctuation">(</span><span class="token string">&#39;attr3&#39;</span> <span class="token operator">=</span><span class="token string">&#39;v3&#39;</span><span class="token punctuation">,</span> <span class="token string">&#39;attr4&#39;</span><span class="token operator">=</span><span class="token string">&#39;v4&#39;</span><span class="token punctuation">)</span>

<span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 UPSERT 
ALIAS <span class="token operator">=</span> newAlias TAGS<span class="token punctuation">(</span>tag2 <span class="token operator">=</span> newV2<span class="token punctuation">,</span> tag3 <span class="token operator">=</span> v3<span class="token punctuation">)</span> ATTRIBUTES<span class="token punctuation">(</span>attr3 <span class="token operator">=</span> v3<span class="token punctuation">,</span> attr4 <span class="token operator">=</span> v4<span class="token punctuation">)</span>
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-ext="sql" data-title="sql"><pre class="language-sql"><code><span class="token comment"># 添加新的标签</span>
<span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">ADD</span> TAGS <span class="token string">&#39;tag3&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;v3&#39;</span><span class="token punctuation">,</span> <span class="token string">&#39;tag4&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;v4&#39;</span>

<span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">ADD</span> TAGS tag3 <span class="token operator">=</span> v3<span class="token punctuation">,</span> tag4 <span class="token operator">=</span> v4
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-ext="sql" data-title="sql"><pre class="language-sql"><code><span class="token comment"># 添加新的属性</span>
<span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">ADD</span> ATTRIBUTES <span class="token string">&#39;attr3&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;v3&#39;</span><span class="token punctuation">,</span> <span class="token string">&#39;attr4&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;v4&#39;</span>

<span class="token keyword">ALTER</span> timeseries root<span class="token punctuation">.</span>turbine<span class="token punctuation">.</span>d1<span class="token punctuation">.</span>s1 <span class="token keyword">ADD</span> ATTRIBUTES attr3 <span class="token operator">=</span> v3<span class="token punctuation">,</span> attr4 <span class="token operator">=</span> v4
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><div class="language-sql line-numbers-mode" data-ext="sql" data-title="sql"><pre class="language-sql"><code><span class="token comment"># 查询符合条件的时间序列信息</span>
<span class="token keyword">SHOW</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> WHRER <span class="token string">&#39;unit&#39;</span> <span class="token operator">=</span> <span class="token string">&#39;c&#39;</span>

<span class="token keyword">SHOW</span> timeseries root<span class="token punctuation">.</span>ln<span class="token punctuation">.</span><span class="token operator">*</span><span class="token operator">*</span> WHRER unit <span class="token operator">=</span> c
</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>创建 Pipe 以及 PipeSink 时表示属性的键值对。</li></ul><div class="language-SQL line-numbers-mode" data-ext="SQL" data-title="SQL"><pre class="language-SQL"><code># 创建 PipeSink 时表示属性
CREATE PIPESINK my_iotdb AS IoTDB (&#39;ip&#39; = &#39;输入你的IP&#39;)

# 创建 Pipe 时在 WITH 子句中表示属性
CREATE PIPE my_pipe TO my_iotdb FROM 
(select ** from root WHERE time&gt;=yyyy-mm-dd HH:MM:SS) WITH &#39;SyncDelOp&#39; = &#39;true&#39;
</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div></div><!--[--><!----><!--]--><footer class="vp-page-meta"><div class="vp-meta-item edit-link"><a href="https://github.com/apache/iotdb-docs/edit/main/src/zh/UserGuide/V1.1.x/Syntax-Conventions/KeyValue-Pair.md" rel="noopener noreferrer" target="_blank" aria-label="发现错误？在 GitHub 上编辑此页" class="nav-link vp-meta-label"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->发现错误？在 GitHub 上编辑此页<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span><!----></a></div><div class="vp-meta-item git-info"><div class="update-time"><span class="vp-meta-label">上次编辑于: </span><!----></div><!----></div></footer><nav class="vp-page-nav"><a class="route-link nav-link prev" href="/zh/UserGuide/V1.1.x/Syntax-Conventions/NodeName-In-Path.html" aria-label="路径结点名"><div class="hint"><span class="arrow start"></span>上一页</div><div class="link"><!---->路径结点名</div></a><a class="route-link nav-link next" href="/zh/UserGuide/V1.1.x/Syntax-Conventions/Keywords-And-Reserved-Words.html" aria-label="关键字"><div class="hint">下一页<span class="arrow end"></span></div><div class="link">关键字<!----></div></a></nav><!----><!--[--><!----><!--]--><!--]--></main><!--]--><footer style="padding-bottom:2rem;"><span id="doc-version" style="display:none;">rel/1.1</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2024 The Apache Software Foundation.<br> Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>Have a question?</strong> Connect with us on QQ, WeChat, or Slack. <a href="https://github.com/apache/iotdb/issues/1995">Join the community</a> now.</p></footer></div><!--]--><!--]--><!--[--><!----><!--]--><!--]--></div>
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