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<blockquote>
<p>Apache Druid supports two query languages: <a href="/docs/latest/querying/sql.html">Druid SQL</a> and <a href="/docs/latest/querying/querying.html">native queries</a>.
This document describes a feature that is only available in the native language.</p>
</blockquote>
<p>Apache Druid supports filtering spatially indexed columns based on an origin and a bound.</p>
<p>This topic explains how to ingest and query spatial filters.
For information on other filters supported by Druid, see <a href="/docs/latest/querying/filters.html">Query filters</a>.</p>
<h2><a class="anchor" aria-hidden="true" id="spatial-indexing"></a><a href="#spatial-indexing" 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>Spatial indexing</h2>
<p>Spatial indexing refers to ingesting data of a spatial data type, such as geometry or geography, into Druid.</p>
<p>Spatial dimensions are string columns that contain coordinates separated by a comma.
In the ingestion spec, you configure spatial dimensions in the <code>dimensionsSpec</code> object of the <code>dataSchema</code> component.</p>
<p>You can provide spatial dimensions in any of the <a href="/docs/latest/ingestion/data-formats.html">data formats</a> supported by Druid.
The following example shows an ingestion spec with a spatial dimension named <code>coordinates</code>, which is constructed from the input fields <code>x</code> and <code>y</code>:</p>
<pre><code class="hljs css language-json">{
  <span class="hljs-attr">"type"</span>: <span class="hljs-string">"hadoop"</span>,
  <span class="hljs-attr">"dataSchema"</span>: {
    <span class="hljs-attr">"dataSource"</span>: <span class="hljs-string">"DatasourceName"</span>,
    <span class="hljs-attr">"parser"</span>: {
      <span class="hljs-attr">"type"</span>: <span class="hljs-string">"string"</span>,
      <span class="hljs-attr">"parseSpec"</span>: {
        <span class="hljs-attr">"format"</span>: <span class="hljs-string">"json"</span>,
        <span class="hljs-attr">"timestampSpec"</span>: {
          <span class="hljs-attr">"column"</span>: <span class="hljs-string">"timestamp"</span>,
          <span class="hljs-attr">"format"</span>: <span class="hljs-string">"auto"</span>
        },
        <span class="hljs-attr">"dimensionsSpec"</span>: {
          <span class="hljs-attr">"dimensions"</span>: [
            {
              <span class="hljs-attr">"type"</span>: <span class="hljs-string">"double"</span>,
              <span class="hljs-attr">"name"</span>: <span class="hljs-string">"x"</span>
            },
            {
              <span class="hljs-attr">"type"</span>: <span class="hljs-string">"double"</span>,
              <span class="hljs-attr">"name"</span>: <span class="hljs-string">"y"</span>
            }
          ],
          <span class="hljs-attr">"spatialDimensions"</span>: [
            {
              <span class="hljs-attr">"dimName"</span>: <span class="hljs-string">"coordinates"</span>,
              <span class="hljs-attr">"dims"</span>: [
                <span class="hljs-string">"x"</span>,
                <span class="hljs-string">"y"</span>
              ]
            }
          ]
        }
      }
    }
  }
}
</code></pre>
<p>Each spatial dimension object in the <code>spatialDimensions</code> array is defined by the following fields:</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Required</th></tr>
</thead>
<tbody>
<tr><td><code>dimName</code></td><td>The name of a spatial dimension. You can construct a spatial dimension from other dimensions or it may already exist as part of an event. If a spatial dimension already exists, it must be an array of coordinate values.</td><td>yes</td></tr>
<tr><td><code>dims</code></td><td>The list of dimension names that comprise the spatial dimension.</td><td>no</td></tr>
</tbody>
</table>
<p>For information on how to use the ingestion spec to configure ingestion, see <a href="/docs/latest/ingestion/ingestion-spec.html">Ingestion spec reference</a>.
For general information on loading data in Druid, see <a href="/docs/latest/ingestion/index.html">Ingestion</a>.</p>
<h2><a class="anchor" aria-hidden="true" id="spatial-filters"></a><a href="#spatial-filters" 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>Spatial filters</h2>
<p>A <a href="/docs/latest/querying/filters.html">filter</a> is a JSON object indicating which rows of data should be included in the computation for a query.
You can filter on spatial structures, such as rectangles and polygons, using the spatial filter.</p>
<p>Spatial filters have the following structure:</p>
<pre><code class="hljs css language-json">"filter": {
  "type": "spatial",
  "dimension": &lt;name_of_spatial_dimension&gt;,
  "bound": &lt;bound_type&gt;
}
</code></pre>
<p>The following example shows a spatial filter with a rectangular bound type:</p>
<pre><code class="hljs css language-json">"filter" : {
    "type": "spatial",
    "dimension": "spatialDim",
    "bound": {
        "type": "rectangular",
        "minCoords": [10.0, 20.0],
        "maxCoords": [30.0, 40.0]
    }
</code></pre>
<p>The order of the dimension coordinates in the spatial filter must be equal to the order of the dimension coordinates in the <code>spatialDimensions</code> array.</p>
<h3><a class="anchor" aria-hidden="true" id="bound-types"></a><a href="#bound-types" 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>Bound types</h3>
<p>The <code>bound</code> property of the spatial filter object lets you filter on ranges of dimension values.
You can define rectangular, radius, and polygon filter bounds.</p>
<h4><a class="anchor" aria-hidden="true" id="rectangular"></a><a href="#rectangular" 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>Rectangular</h4>
<p>The <code>rectangular</code> bound has the following elements:</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Required</th></tr>
</thead>
<tbody>
<tr><td><code>minCoords</code></td><td>The list of minimum dimension coordinates in the form [x, y]</td><td>yes</td></tr>
<tr><td><code>maxCoords</code></td><td>The list of maximum dimension coordinates in the form [x, y]</td><td>yes</td></tr>
</tbody>
</table>
<h4><a class="anchor" aria-hidden="true" id="radius"></a><a href="#radius" 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>Radius</h4>
<p>The <code>radius</code> bound has the following elements:</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Required</th></tr>
</thead>
<tbody>
<tr><td><code>coords</code></td><td>Origin coordinates in the form [x, y]</td><td>yes</td></tr>
<tr><td><code>radius</code></td><td>The float radius value</td><td>yes</td></tr>
</tbody>
</table>
<h4><a class="anchor" aria-hidden="true" id="polygon"></a><a href="#polygon" 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>Polygon</h4>
<p>The <code>polygon</code> bound has the following elements:</p>
<table>
<thead>
<tr><th>Property</th><th>Description</th><th>Required</th></tr>
</thead>
<tbody>
<tr><td><code>abscissa</code></td><td>Horizontal coordinates for the corners of the polygon</td><td>yes</td></tr>
<tr><td><code>ordinate</code></td><td>Vertical coordinates for the corners of the polygon</td><td>yes</td></tr>
</tbody>
</table>
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