<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>String comparators · Apache Druid</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><link rel="canonical" href="https://druid.apache.org/docs/24.0.2/querying/sorting-orders.html"/><meta name="generator" content="Docusaurus"/><meta name="description" content="&lt;!--"/><meta name="docsearch:language" content="en"/><meta name="docsearch:version" content="24.0.2" /><meta property="og:title" content="String comparators · 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/npm/docsearch.js@2/dist/cdn/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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<blockquote>
<p>Apache Druid supports two query languages: <a href="/docs/24.0.2/querying/sql.html">Druid SQL</a> and <a href="/docs/24.0.2/querying/querying.html">native queries</a>.
This document describes the native
language. For information about functions available in SQL, refer to the
<a href="/docs/24.0.2/querying/sql-scalar.html">SQL documentation</a>.</p>
</blockquote>
<p>These sorting orders are used by the <a href="/docs/24.0.2/querying/topnmetricspec.html">TopNMetricSpec</a>, <a href="/docs/24.0.2/querying/searchquery.html">SearchQuery</a>, GroupByQuery's <a href="/docs/24.0.2/querying/limitspec.html">LimitSpec</a>, and <a href="/docs/24.0.2/querying/filters.html#bound-filter">BoundFilter</a>.</p>
<h2><a class="anchor" aria-hidden="true" id="lexicographic"></a><a href="#lexicographic" 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>Lexicographic</h2>
<p>Sorts values by converting Strings to their UTF-8 byte array representations and comparing lexicographically, byte-by-byte.</p>
<h2><a class="anchor" aria-hidden="true" id="alphanumeric"></a><a href="#alphanumeric" 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>Alphanumeric</h2>
<p>Suitable for strings with both numeric and non-numeric content, e.g.: &quot;file12 sorts after file2&quot;</p>
<p>See <a href="https://github.com/amjjd/java-alphanum">https://github.com/amjjd/java-alphanum</a> for more details on how this ordering sorts values.</p>
<p>This ordering is not suitable for numbers with decimal points or negative numbers.</p>
<ul>
<li>For example, &quot;1.3&quot; precedes &quot;1.15&quot; in this ordering because &quot;15&quot; has more significant digits than &quot;3&quot;.</li>
<li>Negative numbers are sorted after positive numbers (because numeric characters precede the &quot;-&quot; in the negative numbers).</li>
</ul>
<h2><a class="anchor" aria-hidden="true" id="numeric"></a><a href="#numeric" 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>Numeric</h2>
<p>Sorts values as numbers, supports integers and floating point values. Negative values are supported.</p>
<p>This sorting order will try to parse all string values as numbers. Unparseable values are treated as nulls, and nulls precede numbers.</p>
<p>When comparing two unparseable values (e.g., &quot;hello&quot; and &quot;world&quot;), this ordering will sort by comparing the unparsed strings lexicographically.</p>
<h2><a class="anchor" aria-hidden="true" id="strlen"></a><a href="#strlen" 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>Strlen</h2>
<p>Sorts values by their string lengths. When there is a tie, this comparator falls back to using the String compareTo method.</p>
<h2><a class="anchor" aria-hidden="true" id="version"></a><a href="#version" 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>Version</h2>
<p>Sorts values as versions, e.g.: &quot;10.0 sorts after 9.0&quot;, &quot;1.0.0-SNAPSHOT sorts after 1.0.0&quot;.</p>
<p>See <a href="https://maven.apache.org/ref/3.6.0/maven-artifact/apidocs/org/apache/maven/artifact/versioning/ComparableVersion.html">https://maven.apache.org/ref/3.6.0/maven-artifact/apidocs/org/apache/maven/artifact/versioning/ComparableVersion.html</a> for more details on how this ordering sorts values.</p>
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