<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Search queries · Apache Druid</title><meta name="viewport" content="width=device-width"/><link rel="canonical" href="https://druid.apache.org/docs/0.23.0/querying/searchquery.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="&lt;!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="0.23.0" /><meta property="og:title" content="Search queries · Apache Druid"/><meta property="og:type" content="website"/><meta property="og:url" content="https://druid.apache.org/index.html"/><meta property="og:description" content="&lt;!--"/><meta property="og:image" content="https://druid.apache.org/img/druid_nav.png"/><meta name="twitter:card" content="summary"/><meta name="twitter:image" content="https://druid.apache.org/img/druid_nav.png"/><link rel="shortcut icon" href="/img/favicon.png"/><link rel="stylesheet" href="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.css"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css"/><script async="" src="https://www.googletagmanager.com/gtag/js?id=UA-131010415-1"></script><script>
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(topN)</a></li><li class="navListItem"><a class="navItem" href="/docs/0.23.0/querying/sorting-orders.html">String comparators</a></li><li class="navListItem"><a class="navItem" href="/docs/0.23.0/querying/virtual-columns.html">Virtual columns</a></li><li class="navListItem"><a class="navItem" href="/docs/0.23.0/development/geo.html">Spatial filters</a></li></ul></div></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle collapsible">Configuration<span class="arrow"><svg width="24" height="24" viewBox="0 0 24 24"><path fill="#565656" d="M7.41 15.41L12 10.83l4.59 4.58L18 14l-6-6-6 6z"></path><path d="M0 0h24v24H0z" fill="none"></path></svg></span></h3><ul class="hide"><li class="navListItem"><a class="navItem" href="/docs/0.23.0/configuration/index.html">Configuration reference</a></li><li class="navListItem"><a class="navItem" href="/docs/0.23.0/development/extensions.html">Extensions</a></li><li class="navListItem"><a class="navItem" 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<blockquote>
<p>Apache Druid supports two query languages: <a href="/docs/0.23.0/querying/sql.html">Druid SQL</a> and <a href="/docs/0.23.0/querying/querying.html">native queries</a>.
This document describes a query
type that is only available in the native language.</p>
</blockquote>
<p>A search query returns dimension values that match the search specification.</p>
<pre><code class="hljs css language-json">{
  <span class="hljs-attr">"queryType"</span>: <span class="hljs-string">"search"</span>,
  <span class="hljs-attr">"dataSource"</span>: <span class="hljs-string">"sample_datasource"</span>,
  <span class="hljs-attr">"granularity"</span>: <span class="hljs-string">"day"</span>,
  <span class="hljs-attr">"searchDimensions"</span>: [
    <span class="hljs-string">"dim1"</span>,
    <span class="hljs-string">"dim2"</span>
  ],
  <span class="hljs-attr">"query"</span>: {
    <span class="hljs-attr">"type"</span>: <span class="hljs-string">"insensitive_contains"</span>,
    <span class="hljs-attr">"value"</span>: <span class="hljs-string">"Ke"</span>
  },
  <span class="hljs-attr">"sort"</span> : {
    <span class="hljs-attr">"type"</span>: <span class="hljs-string">"lexicographic"</span>
  },
  <span class="hljs-attr">"intervals"</span>: [
    <span class="hljs-string">"2013-01-01T00:00:00.000/2013-01-03T00:00:00.000"</span>
  ]
}
</code></pre>
<p>There are several main parts to a search query:</p>
<table>
<thead>
<tr><th>property</th><th>description</th><th>required?</th></tr>
</thead>
<tbody>
<tr><td>queryType</td><td>This String should always be &quot;search&quot;; this is the first thing Apache Druid looks at to figure out how to interpret the query.</td><td>yes</td></tr>
<tr><td>dataSource</td><td>A String or Object defining the data source to query, very similar to a table in a relational database. See <a href="/docs/0.23.0/querying/datasource.html">DataSource</a> for more information.</td><td>yes</td></tr>
<tr><td>granularity</td><td>Defines the granularity of the query. See <a href="/docs/0.23.0/querying/granularities.html">Granularities</a>.</td><td>no (default to <code>all</code>)</td></tr>
<tr><td>filter</td><td>See <a href="/docs/0.23.0/querying/filters.html">Filters</a>.</td><td>no</td></tr>
<tr><td>limit</td><td>Defines the maximum number per Historical process (parsed as int) of search results to return.</td><td>no (default to 1000)</td></tr>
<tr><td>intervals</td><td>A JSON Object representing ISO-8601 Intervals. This defines the time ranges to run the query over.</td><td>yes</td></tr>
<tr><td>searchDimensions</td><td>The dimensions to run the search over. Excluding this means the search is run over all dimensions.</td><td>no</td></tr>
<tr><td>query</td><td>See <a href="#searchqueryspec">SearchQuerySpec</a>.</td><td>yes</td></tr>
<tr><td>sort</td><td>An object specifying how the results of the search should be sorted.<br/>Possible types are &quot;lexicographic&quot; (the default sort), &quot;alphanumeric&quot;, &quot;strlen&quot;, and &quot;numeric&quot;.<br/>See <a href="/docs/0.23.0/querying/sorting-orders.html">Sorting Orders</a> for more details.</td><td>no</td></tr>
<tr><td>context</td><td>See <a href="/docs/0.23.0/querying/query-context.html">Context</a></td><td>no</td></tr>
</tbody>
</table>
<p>The format of the result is:</p>
<pre><code class="hljs css language-json">[
  {
    <span class="hljs-attr">"timestamp"</span>: <span class="hljs-string">"2013-01-01T00:00:00.000Z"</span>,
    <span class="hljs-attr">"result"</span>: [
      {
        <span class="hljs-attr">"dimension"</span>: <span class="hljs-string">"dim1"</span>,
        <span class="hljs-attr">"value"</span>: <span class="hljs-string">"Ke$ha"</span>,
        <span class="hljs-attr">"count"</span>: <span class="hljs-number">3</span>
      },
      {
        <span class="hljs-attr">"dimension"</span>: <span class="hljs-string">"dim2"</span>,
        <span class="hljs-attr">"value"</span>: <span class="hljs-string">"Ke$haForPresident"</span>,
        <span class="hljs-attr">"count"</span>: <span class="hljs-number">1</span>
      }
    ]
  },
  {
    <span class="hljs-attr">"timestamp"</span>: <span class="hljs-string">"2013-01-02T00:00:00.000Z"</span>,
    <span class="hljs-attr">"result"</span>: [
      {
        <span class="hljs-attr">"dimension"</span>: <span class="hljs-string">"dim1"</span>,
        <span class="hljs-attr">"value"</span>: <span class="hljs-string">"SomethingThatContainsKe"</span>,
        <span class="hljs-attr">"count"</span>: <span class="hljs-number">1</span>
      },
      {
        <span class="hljs-attr">"dimension"</span>: <span class="hljs-string">"dim2"</span>,
        <span class="hljs-attr">"value"</span>: <span class="hljs-string">"SomethingElseThatContainsKe"</span>,
        <span class="hljs-attr">"count"</span>: <span class="hljs-number">2</span>
      }
    ]
  }
]
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="implementation-details"></a><a href="#implementation-details" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Implementation details</h3>
<h4><a class="anchor" aria-hidden="true" id="strategies"></a><a href="#strategies" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Strategies</h4>
<p>Search queries can be executed using two different strategies. The default strategy is determined by the
&quot;druid.query.search.searchStrategy&quot; runtime property on the Broker. This can be overridden using &quot;searchStrategy&quot; in the
query context. If neither the context field nor the property is set, the &quot;useIndexes&quot; strategy will be used.</p>
<ul>
<li><p>&quot;useIndexes&quot; strategy, the default, first categorizes search dimensions into two groups according to their support for
bitmap indexes. And then, it applies index-only and cursor-based execution plans to the group of dimensions supporting
bitmaps and others, respectively. The index-only plan uses only indexes for search query processing. For each dimension,
it reads the bitmap index for each dimension value, evaluates the search predicate, and finally checks the time interval
and filter predicates. For the cursor-based execution plan, please refer to the &quot;cursorOnly&quot; strategy. The index-only
plan shows low performance for the search dimensions of large cardinality which means most values of search dimensions
are unique.</p></li>
<li><p>&quot;cursorOnly&quot; strategy generates a cursor-based execution plan. This plan creates a cursor which reads a row from a
queryableIndexSegment, and then evaluates search predicates. If some filters support bitmap indexes, the cursor can read
only the rows which satisfy those filters, thereby saving I/O cost. However, it might be slow with filters of low selectivity.</p></li>
<li><p>&quot;auto&quot; strategy uses a cost-based planner for choosing an optimal search strategy. It estimates the cost of index-only
and cursor-based execution plans, and chooses the optimal one. Currently, it is not enabled by default due to the overhead
of cost estimation.</p></li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="server-configuration"></a><a href="#server-configuration" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Server configuration</h2>
<p>The following runtime properties apply:</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Default</th></tr>
</thead>
<tbody>
<tr><td><code>druid.query.search.searchStrategy</code></td><td>Default search query strategy.</td><td>useIndexes</td></tr>
</tbody>
</table>
<h2><a class="anchor" aria-hidden="true" id="query-context"></a><a href="#query-context" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Query context</h2>
<p>The following query context parameters apply:</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td><code>searchStrategy</code></td><td>Overrides the value of <code>druid.query.search.searchStrategy</code> for this query.</td></tr>
</tbody>
</table>
<h2><a class="anchor" aria-hidden="true" id="searchqueryspec"></a><a href="#searchqueryspec" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>SearchQuerySpec</h2>
<h3><a class="anchor" aria-hidden="true" id="insensitive_contains"></a><a href="#insensitive_contains" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code>insensitive_contains</code></h3>
<p>If any part of a dimension value contains the value specified in this search query spec, regardless of case, a &quot;match&quot; occurs. The grammar is:</p>
<pre><code class="hljs css language-json">{
  <span class="hljs-attr">"type"</span>  : <span class="hljs-string">"insensitive_contains"</span>,
  <span class="hljs-attr">"value"</span> : <span class="hljs-string">"some_value"</span>
}
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="fragment"></a><a href="#fragment" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code>fragment</code></h3>
<p>If any part of a dimension value contains all of the values specified in this search query spec, regardless of case by default, a &quot;match&quot; occurs. The grammar is:</p>
<pre><code class="hljs css language-json">{
  <span class="hljs-attr">"type"</span> : <span class="hljs-string">"fragment"</span>,
  <span class="hljs-attr">"case_sensitive"</span> : <span class="hljs-literal">false</span>,
  <span class="hljs-attr">"values"</span> : [<span class="hljs-string">"fragment1"</span>, <span class="hljs-string">"fragment2"</span>]
}
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="contains"></a><a href="#contains" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code>contains</code></h3>
<p>If any part of a dimension value contains the value specified in this search query spec, a &quot;match&quot; occurs. The grammar is:</p>
<pre><code class="hljs css language-json">{
  <span class="hljs-attr">"type"</span>  : <span class="hljs-string">"contains"</span>,
  <span class="hljs-attr">"case_sensitive"</span> : <span class="hljs-literal">true</span>,
  <span class="hljs-attr">"value"</span> : <span class="hljs-string">"some_value"</span>
}
</code></pre>
<h3><a class="anchor" aria-hidden="true" id="regex"></a><a href="#regex" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a><code>regex</code></h3>
<p>If any part of a dimension value contains the pattern specified in this search query spec, a &quot;match&quot; occurs. The grammar is:</p>
<pre><code class="hljs css language-json">{
  <span class="hljs-attr">"type"</span>  : <span class="hljs-string">"regex"</span>,
  <span class="hljs-attr">"pattern"</span> : <span class="hljs-string">"some_pattern"</span>
}
</code></pre>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/0.23.0/querying/scan-query.html"><span class="arrow-prev">← </span><span>Scan</span></a><a class="docs-next button" href="/docs/0.23.0/querying/timeboundaryquery.html"><span class="function-name-prevnext">TimeBoundary</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#server-configuration">Server configuration</a></li><li><a href="#query-context">Query context</a></li><li><a href="#searchqueryspec">SearchQuerySpec</a><ul class="toc-headings"><li><a href="#insensitive_contains"><code>insensitive_contains</code></a></li><li><a href="#fragment"><code>fragment</code></a></li><li><a href="#contains"><code>contains</code></a></li><li><a href="#regex"><code>regex</code></a></li></ul></li></ul></nav></div><footer class="nav-footer druid-footer" id="footer"><div class="container"><div class="text-center"><p><a href="/technology">Technology</a> · <a href="/use-cases">Use Cases</a> · <a href="/druid-powered">Powered by Druid</a> · <a href="/docs/0.23.0/latest">Docs</a> · <a href="/community/">Community</a> · <a href="/downloads.html">Download</a> · <a href="/faq">FAQ</a></p></div><div class="text-center"><a title="Join the user group" href="https://groups.google.com/forum/#!forum/druid-user" target="_blank"><span class="fa fa-comments"></span></a> · <a title="Follow Druid" href="https://twitter.com/druidio" target="_blank"><span class="fab fa-twitter"></span></a> · <a title="Download via Apache" href="https://www.apache.org/dyn/closer.cgi?path=/incubator/druid/{{ site.druid_versions[0].versions[0].version }}/apache-druid-{{ site.druid_versions[0].versions[0].version }}-bin.tar.gz" target="_blank"><span class="fas fa-feather"></span></a> · <a title="GitHub" href="https://github.com/apache/druid" target="_blank"><span class="fab fa-github"></span></a></div><div class="text-center license">Copyright © 2019 <a href="https://www.apache.org/" target="_blank">Apache Software Foundation</a>.<br/>Except where otherwise noted, licensed under <a rel="license" href="http://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA 4.0</a>.<br/>Apache Druid, Druid, and the Druid logo are either registered trademarks or trademarks of The Apache Software Foundation in the United States and other countries.</div></div></footer></div><script type="text/javascript" src="https://cdn.jsdelivr.net/docsearch.js/1/docsearch.min.js"></script><script>
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