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| <h1 id="tutorial-querying-data">Tutorial: Querying data</h1> |
| |
| <p>This tutorial will demonstrate how to query data in Druid, with examples for Druid's native query format and Druid SQL.</p> |
| |
| <p>The tutorial assumes that you've already completed one of the 4 ingestion tutorials, as we will be querying the sample Wikipedia edits data.</p> |
| |
| <ul> |
| <li><a href="../tutorials/tutorial-batch.html">Tutorial: Loading a file</a></li> |
| <li><a href="../tutorials/tutorial-kafka.html">Tutorial: Loading stream data from Kafka</a></li> |
| <li><a href="../tutorials/tutorial-batch-hadoop.html">Tutorial: Loading a file using Hadoop</a></li> |
| <li><a href="../tutorials/tutorial-tranquility.html">Tutorial: Loading stream data using Tranquility</a></li> |
| </ul> |
| |
| <h2 id="native-json-queries">Native JSON queries</h2> |
| |
| <p>Druid's native query format is expressed in JSON. We have included a sample native TopN query under <code>quickstart/tutorial/wikipedia-top-pages.json</code>:</p> |
| <div class="highlight"><pre><code class="language-json" data-lang="json"><span></span><span class="p">{</span> |
| <span class="nt">"queryType"</span> <span class="p">:</span> <span class="s2">"topN"</span><span class="p">,</span> |
| <span class="nt">"dataSource"</span> <span class="p">:</span> <span class="s2">"wikipedia"</span><span class="p">,</span> |
| <span class="nt">"intervals"</span> <span class="p">:</span> <span class="p">[</span><span class="s2">"2015-09-12/2015-09-13"</span><span class="p">],</span> |
| <span class="nt">"granularity"</span> <span class="p">:</span> <span class="s2">"all"</span><span class="p">,</span> |
| <span class="nt">"dimension"</span> <span class="p">:</span> <span class="s2">"page"</span><span class="p">,</span> |
| <span class="nt">"metric"</span> <span class="p">:</span> <span class="s2">"count"</span><span class="p">,</span> |
| <span class="nt">"threshold"</span> <span class="p">:</span> <span class="mi">10</span><span class="p">,</span> |
| <span class="nt">"aggregations"</span> <span class="p">:</span> <span class="p">[</span> |
| <span class="p">{</span> |
| <span class="nt">"type"</span> <span class="p">:</span> <span class="s2">"count"</span><span class="p">,</span> |
| <span class="nt">"name"</span> <span class="p">:</span> <span class="s2">"count"</span> |
| <span class="p">}</span> |
| <span class="p">]</span> |
| <span class="p">}</span> |
| </code></pre></div> |
| <p>This query retrieves the 10 Wikipedia pages with the most page edits on 2015-09-12.</p> |
| |
| <p>Let's submit this query to the Druid broker:</p> |
| <div class="highlight"><pre><code class="language-bash" data-lang="bash"><span></span>curl -X <span class="s1">'POST'</span> -H <span class="s1">'Content-Type:application/json'</span> -d @quickstart/tutorial/wikipedia-top-pages.json http://localhost:8082/druid/v2?pretty |
| </code></pre></div> |
| <p>You should see the following query results:</p> |
| <div class="highlight"><pre><code class="language-json" data-lang="json"><span></span><span class="p">[</span> <span class="p">{</span> |
| <span class="nt">"timestamp"</span> <span class="p">:</span> <span class="s2">"2015-09-12T00:46:58.771Z"</span><span class="p">,</span> |
| <span class="nt">"result"</span> <span class="p">:</span> <span class="p">[</span> <span class="p">{</span> |
| <span class="nt">"count"</span> <span class="p">:</span> <span class="mi">33</span><span class="p">,</span> |
| <span class="nt">"page"</span> <span class="p">:</span> <span class="s2">"Wikipedia:Vandalismusmeldung"</span> |
| <span class="p">},</span> <span class="p">{</span> |
| <span class="nt">"count"</span> <span class="p">:</span> <span class="mi">28</span><span class="p">,</span> |
| <span class="nt">"page"</span> <span class="p">:</span> <span class="s2">"User:Cyde/List of candidates for speedy deletion/Subpage"</span> |
| <span class="p">},</span> <span class="p">{</span> |
| <span class="nt">"count"</span> <span class="p">:</span> <span class="mi">27</span><span class="p">,</span> |
| <span class="nt">"page"</span> <span class="p">:</span> <span class="s2">"Jeremy Corbyn"</span> |
| <span class="p">},</span> <span class="p">{</span> |
| <span class="nt">"count"</span> <span class="p">:</span> <span class="mi">21</span><span class="p">,</span> |
| <span class="nt">"page"</span> <span class="p">:</span> <span class="s2">"Wikipedia:Administrators' noticeboard/Incidents"</span> |
| <span class="p">},</span> <span class="p">{</span> |
| <span class="nt">"count"</span> <span class="p">:</span> <span class="mi">20</span><span class="p">,</span> |
| <span class="nt">"page"</span> <span class="p">:</span> <span class="s2">"Flavia Pennetta"</span> |
| <span class="p">},</span> <span class="p">{</span> |
| <span class="nt">"count"</span> <span class="p">:</span> <span class="mi">18</span><span class="p">,</span> |
| <span class="nt">"page"</span> <span class="p">:</span> <span class="s2">"Total Drama Presents: The Ridonculous Race"</span> |
| <span class="p">},</span> <span class="p">{</span> |
| <span class="nt">"count"</span> <span class="p">:</span> <span class="mi">18</span><span class="p">,</span> |
| <span class="nt">"page"</span> <span class="p">:</span> <span class="s2">"User talk:Dudeperson176123"</span> |
| <span class="p">},</span> <span class="p">{</span> |
| <span class="nt">"count"</span> <span class="p">:</span> <span class="mi">18</span><span class="p">,</span> |
| <span class="nt">"page"</span> <span class="p">:</span> <span class="s2">"Wikipédia:Le Bistro/12 septembre 2015"</span> |
| <span class="p">},</span> <span class="p">{</span> |
| <span class="nt">"count"</span> <span class="p">:</span> <span class="mi">17</span><span class="p">,</span> |
| <span class="nt">"page"</span> <span class="p">:</span> <span class="s2">"Wikipedia:In the news/Candidates"</span> |
| <span class="p">},</span> <span class="p">{</span> |
| <span class="nt">"count"</span> <span class="p">:</span> <span class="mi">17</span><span class="p">,</span> |
| <span class="nt">"page"</span> <span class="p">:</span> <span class="s2">"Wikipedia:Requests for page protection"</span> |
| <span class="p">}</span> <span class="p">]</span> |
| <span class="p">}</span> <span class="p">]</span> |
| </code></pre></div> |
| <h2 id="druid-sql-queries">Druid SQL queries</h2> |
| |
| <p>Druid also supports a dialect of SQL for querying. Let's run a SQL query that is equivalent to the native JSON query shown above:</p> |
| <div class="highlight"><pre><code class="language-text" data-lang="text"><span></span>SELECT page, COUNT(*) AS Edits FROM wikipedia WHERE "__time" BETWEEN TIMESTAMP '2015-09-12 00:00:00' AND TIMESTAMP '2015-09-13 00:00:00' GROUP BY page ORDER BY Edits DESC LIMIT 10; |
| </code></pre></div> |
| <p>The SQL queries are submitted as JSON over HTTP.</p> |
| |
| <h3 id="topn-query-example">TopN query example</h3> |
| |
| <p>The tutorial package includes an example file that contains the SQL query shown above at <code>quickstart/tutorial/wikipedia-top-pages-sql.json</code>. Let's submit that query to the Druid broker:</p> |
| <div class="highlight"><pre><code class="language-bash" data-lang="bash"><span></span>curl -X <span class="s1">'POST'</span> -H <span class="s1">'Content-Type:application/json'</span> -d @quickstart/tutorial/wikipedia-top-pages-sql.json http://localhost:8082/druid/v2/sql |
| </code></pre></div> |
| <p>The following results should be returned:</p> |
| <div class="highlight"><pre><code class="language-json" data-lang="json"><span></span><span class="p">[</span> |
| <span class="p">{</span> |
| <span class="nt">"page"</span><span class="p">:</span> <span class="s2">"Wikipedia:Vandalismusmeldung"</span><span class="p">,</span> |
| <span class="nt">"Edits"</span><span class="p">:</span> <span class="mi">33</span> |
| <span class="p">},</span> |
| <span class="p">{</span> |
| <span class="nt">"page"</span><span class="p">:</span> <span class="s2">"User:Cyde/List of candidates for speedy deletion/Subpage"</span><span class="p">,</span> |
| <span class="nt">"Edits"</span><span class="p">:</span> <span class="mi">28</span> |
| <span class="p">},</span> |
| <span class="p">{</span> |
| <span class="nt">"page"</span><span class="p">:</span> <span class="s2">"Jeremy Corbyn"</span><span class="p">,</span> |
| <span class="nt">"Edits"</span><span class="p">:</span> <span class="mi">27</span> |
| <span class="p">},</span> |
| <span class="p">{</span> |
| <span class="nt">"page"</span><span class="p">:</span> <span class="s2">"Wikipedia:Administrators' noticeboard/Incidents"</span><span class="p">,</span> |
| <span class="nt">"Edits"</span><span class="p">:</span> <span class="mi">21</span> |
| <span class="p">},</span> |
| <span class="p">{</span> |
| <span class="nt">"page"</span><span class="p">:</span> <span class="s2">"Flavia Pennetta"</span><span class="p">,</span> |
| <span class="nt">"Edits"</span><span class="p">:</span> <span class="mi">20</span> |
| <span class="p">},</span> |
| <span class="p">{</span> |
| <span class="nt">"page"</span><span class="p">:</span> <span class="s2">"Total Drama Presents: The Ridonculous Race"</span><span class="p">,</span> |
| <span class="nt">"Edits"</span><span class="p">:</span> <span class="mi">18</span> |
| <span class="p">},</span> |
| <span class="p">{</span> |
| <span class="nt">"page"</span><span class="p">:</span> <span class="s2">"User talk:Dudeperson176123"</span><span class="p">,</span> |
| <span class="nt">"Edits"</span><span class="p">:</span> <span class="mi">18</span> |
| <span class="p">},</span> |
| <span class="p">{</span> |
| <span class="nt">"page"</span><span class="p">:</span> <span class="s2">"Wikipédia:Le Bistro/12 septembre 2015"</span><span class="p">,</span> |
| <span class="nt">"Edits"</span><span class="p">:</span> <span class="mi">18</span> |
| <span class="p">},</span> |
| <span class="p">{</span> |
| <span class="nt">"page"</span><span class="p">:</span> <span class="s2">"Wikipedia:In the news/Candidates"</span><span class="p">,</span> |
| <span class="nt">"Edits"</span><span class="p">:</span> <span class="mi">17</span> |
| <span class="p">},</span> |
| <span class="p">{</span> |
| <span class="nt">"page"</span><span class="p">:</span> <span class="s2">"Wikipedia:Requests for page protection"</span><span class="p">,</span> |
| <span class="nt">"Edits"</span><span class="p">:</span> <span class="mi">17</span> |
| <span class="p">}</span> |
| <span class="p">]</span> |
| </code></pre></div> |
| <h3 id="dsql-client">dsql client</h3> |
| |
| <p>For convenience, the Druid package includes a SQL command-line client, located at <code>bin/dsql</code> from the Druid package root.</p> |
| |
| <p>Let's now run <code>bin/dsql</code>; you should see the following prompt:</p> |
| <div class="highlight"><pre><code class="language-bash" data-lang="bash"><span></span>Welcome to dsql, the command-line client <span class="k">for</span> Druid SQL. |
| Type <span class="s2">"\h"</span> <span class="k">for</span> help. |
| dsql> |
| </code></pre></div> |
| <p>To submit the query, paste it to the <code>dsql</code> prompt and press enter:</p> |
| <div class="highlight"><pre><code class="language-bash" data-lang="bash"><span></span>dsql> SELECT page, COUNT<span class="o">(</span>*<span class="o">)</span> AS Edits FROM wikipedia WHERE <span class="s2">"__time"</span> BETWEEN TIMESTAMP <span class="s1">'2015-09-12 00:00:00'</span> AND TIMESTAMP <span class="s1">'2015-09-13 00:00:00'</span> GROUP BY page ORDER BY Edits DESC LIMIT <span class="m">10</span><span class="p">;</span> |
| ┌──────────────────────────────────────────────────────────┬───────┐ |
| │ page │ Edits │ |
| ├──────────────────────────────────────────────────────────┼───────┤ |
| │ Wikipedia:Vandalismusmeldung │ <span class="m">33</span> │ |
| │ User:Cyde/List of candidates <span class="k">for</span> speedy deletion/Subpage │ <span class="m">28</span> │ |
| │ Jeremy Corbyn │ <span class="m">27</span> │ |
| │ Wikipedia:Administrators<span class="err">'</span> noticeboard/Incidents │ <span class="m">21</span> │ |
| │ Flavia Pennetta │ <span class="m">20</span> │ |
| │ Total Drama Presents: The Ridonculous Race │ <span class="m">18</span> │ |
| │ User talk:Dudeperson176123 │ <span class="m">18</span> │ |
| │ Wikipédia:Le Bistro/12 septembre <span class="m">2015</span> │ <span class="m">18</span> │ |
| │ Wikipedia:In the news/Candidates │ <span class="m">17</span> │ |
| │ Wikipedia:Requests <span class="k">for</span> page protection │ <span class="m">17</span> │ |
| └──────────────────────────────────────────────────────────┴───────┘ |
| Retrieved <span class="m">10</span> rows in <span class="m">0</span>.06s. |
| </code></pre></div> |
| <h3 id="additional-druid-sql-queries">Additional Druid SQL queries</h3> |
| |
| <h4 id="timeseries">Timeseries</h4> |
| |
| <p><code>SELECT FLOOR(__time to HOUR) AS HourTime, SUM(deleted) AS LinesDeleted FROM wikipedia WHERE "__time" BETWEEN TIMESTAMP '2015-09-12 00:00:00' AND TIMESTAMP '2015-09-13 00:00:00' GROUP BY FLOOR(__time to HOUR);</code></p> |
| <div class="highlight"><pre><code class="language-bash" data-lang="bash"><span></span>dsql> SELECT FLOOR<span class="o">(</span>__time to HOUR<span class="o">)</span> AS HourTime, SUM<span class="o">(</span>deleted<span class="o">)</span> AS LinesDeleted FROM wikipedia WHERE <span class="s2">"__time"</span> BETWEEN TIMESTAMP <span class="s1">'2015-09-12 00:00:00'</span> AND TIMESTAMP <span class="s1">'2015-09-13 00:00:00'</span> GROUP BY FLOOR<span class="o">(</span>__time to HOUR<span class="o">)</span><span class="p">;</span> |
| ┌──────────────────────────┬──────────────┐ |
| │ HourTime │ LinesDeleted │ |
| ├──────────────────────────┼──────────────┤ |
| │ <span class="m">2015</span>-09-12T00:00:00.000Z │ <span class="m">1761</span> │ |
| │ <span class="m">2015</span>-09-12T01:00:00.000Z │ <span class="m">16208</span> │ |
| │ <span class="m">2015</span>-09-12T02:00:00.000Z │ <span class="m">14543</span> │ |
| │ <span class="m">2015</span>-09-12T03:00:00.000Z │ <span class="m">13101</span> │ |
| │ <span class="m">2015</span>-09-12T04:00:00.000Z │ <span class="m">12040</span> │ |
| │ <span class="m">2015</span>-09-12T05:00:00.000Z │ <span class="m">6399</span> │ |
| │ <span class="m">2015</span>-09-12T06:00:00.000Z │ <span class="m">9036</span> │ |
| │ <span class="m">2015</span>-09-12T07:00:00.000Z │ <span class="m">11409</span> │ |
| │ <span class="m">2015</span>-09-12T08:00:00.000Z │ <span class="m">11616</span> │ |
| │ <span class="m">2015</span>-09-12T09:00:00.000Z │ <span class="m">17509</span> │ |
| │ <span class="m">2015</span>-09-12T10:00:00.000Z │ <span class="m">19406</span> │ |
| │ <span class="m">2015</span>-09-12T11:00:00.000Z │ <span class="m">16284</span> │ |
| │ <span class="m">2015</span>-09-12T12:00:00.000Z │ <span class="m">18672</span> │ |
| │ <span class="m">2015</span>-09-12T13:00:00.000Z │ <span class="m">30520</span> │ |
| │ <span class="m">2015</span>-09-12T14:00:00.000Z │ <span class="m">18025</span> │ |
| │ <span class="m">2015</span>-09-12T15:00:00.000Z │ <span class="m">26399</span> │ |
| │ <span class="m">2015</span>-09-12T16:00:00.000Z │ <span class="m">24759</span> │ |
| │ <span class="m">2015</span>-09-12T17:00:00.000Z │ <span class="m">19634</span> │ |
| │ <span class="m">2015</span>-09-12T18:00:00.000Z │ <span class="m">17345</span> │ |
| │ <span class="m">2015</span>-09-12T19:00:00.000Z │ <span class="m">19305</span> │ |
| │ <span class="m">2015</span>-09-12T20:00:00.000Z │ <span class="m">22265</span> │ |
| │ <span class="m">2015</span>-09-12T21:00:00.000Z │ <span class="m">16394</span> │ |
| │ <span class="m">2015</span>-09-12T22:00:00.000Z │ <span class="m">16379</span> │ |
| │ <span class="m">2015</span>-09-12T23:00:00.000Z │ <span class="m">15289</span> │ |
| └──────────────────────────┴──────────────┘ |
| Retrieved <span class="m">24</span> rows in <span class="m">0</span>.08s. |
| </code></pre></div> |
| <h4 id="groupby">GroupBy</h4> |
| |
| <p><code>SELECT channel, SUM(added) FROM wikipedia WHERE "__time" BETWEEN TIMESTAMP '2015-09-12 00:00:00' AND TIMESTAMP '2015-09-13 00:00:00' GROUP BY channel ORDER BY SUM(added) DESC LIMIT 5;</code></p> |
| <div class="highlight"><pre><code class="language-bash" data-lang="bash"><span></span>dsql> SELECT channel, SUM<span class="o">(</span>added<span class="o">)</span> FROM wikipedia WHERE <span class="s2">"__time"</span> BETWEEN TIMESTAMP <span class="s1">'2015-09-12 00:00:00'</span> AND TIMESTAMP <span class="s1">'2015-09-13 00:00:00'</span> GROUP BY channel ORDER BY SUM<span class="o">(</span>added<span class="o">)</span> DESC LIMIT <span class="m">5</span><span class="p">;</span> |
| ┌───────────────┬─────────┐ |
| │ channel │ EXPR<span class="nv">$1</span> │ |
| ├───────────────┼─────────┤ |
| │ <span class="c1">#en.wikipedia │ 3045299 │</span> |
| │ <span class="c1">#it.wikipedia │ 711011 │</span> |
| │ <span class="c1">#fr.wikipedia │ 642555 │</span> |
| │ <span class="c1">#ru.wikipedia │ 640698 │</span> |
| │ <span class="c1">#es.wikipedia │ 634670 │</span> |
| └───────────────┴─────────┘ |
| Retrieved <span class="m">5</span> rows in <span class="m">0</span>.05s. |
| </code></pre></div> |
| <h4 id="scan">Scan</h4> |
| |
| <p><code>SELECT user, page FROM wikipedia WHERE "__time" BETWEEN TIMESTAMP '2015-09-12 02:00:00' AND TIMESTAMP '2015-09-12 03:00:00' LIMIT 5;</code></p> |
| <div class="highlight"><pre><code class="language-bash" data-lang="bash"><span></span> dsql> SELECT user, page FROM wikipedia WHERE <span class="s2">"__time"</span> BETWEEN TIMESTAMP <span class="s1">'2015-09-12 02:00:00'</span> AND TIMESTAMP <span class="s1">'2015-09-12 03:00:00'</span> LIMIT <span class="m">5</span><span class="p">;</span> |
| ┌────────────────────────┬────────────────────────────────────────────────────────┐ |
| │ user │ page │ |
| ├────────────────────────┼────────────────────────────────────────────────────────┤ |
| │ Thiago89 │ Campeonato Mundial de Voleibol Femenino Sub-20 de <span class="m">2015</span> │ |
| │ <span class="m">91</span>.34.200.249 │ Friede von Schönbrunn │ |
| │ TuHan-Bot │ Trĩ vàng │ |
| │ Lowercase sigmabot III │ User talk:ErrantX │ |
| │ BattyBot │ Hans W. Jung │ |
| └────────────────────────┴────────────────────────────────────────────────────────┘ |
| Retrieved <span class="m">5</span> rows in <span class="m">0</span>.04s. |
| </code></pre></div> |
| <h4 id="explain-plan-for">EXPLAIN PLAN FOR</h4> |
| |
| <p>By prepending <code>EXPLAIN PLAN FOR</code> to a Druid SQL query, it is possible to see what native Druid queries a SQL query will plan into.</p> |
| |
| <p>Using the TopN query above as an example:</p> |
| |
| <p><code>EXPLAIN PLAN FOR SELECT page, COUNT(*) AS Edits FROM wikipedia WHERE "__time" BETWEEN TIMESTAMP '2015-09-12 00:00:00' AND TIMESTAMP '2015-09-13 00:00:00' GROUP BY page ORDER BY Edits DESC LIMIT 10;</code></p> |
| <div class="highlight"><pre><code class="language-bash" data-lang="bash"><span></span>dsql> EXPLAIN PLAN FOR SELECT page, COUNT<span class="o">(</span>*<span class="o">)</span> AS Edits FROM wikipedia WHERE <span class="s2">"__time"</span> BETWEEN TIMESTAMP <span class="s1">'2015-09-12 00:00:00'</span> AND TIMESTAMP <span class="s1">'2015-09-13 00:00:00'</span> GROUP BY page ORDER BY Edits DESC LIMIT <span class="m">10</span><span class="p">;</span> |
| ┌─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐ |
| │ PLAN │ |
| ├─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤ |
| │ DruidQueryRel<span class="o">(</span><span class="nv">query</span><span class="o">=[{</span><span class="s2">"queryType"</span>:<span class="s2">"topN"</span>,<span class="s2">"dataSource"</span>:<span class="o">{</span><span class="s2">"type"</span>:<span class="s2">"table"</span>,<span class="s2">"name"</span>:<span class="s2">"wikipedia"</span><span class="o">}</span>,<span class="s2">"virtualColumns"</span>:<span class="o">[]</span>,<span class="s2">"dimension"</span>:<span class="o">{</span><span class="s2">"type"</span>:<span class="s2">"default"</span>,<span class="s2">"dimension"</span>:<span class="s2">"page"</span>,<span class="s2">"outputName"</span>:<span class="s2">"d0"</span>,<span class="s2">"outputType"</span>:<span class="s2">"STRING"</span><span class="o">}</span>,<span class="s2">"metric"</span>:<span class="o">{</span><span class="s2">"type"</span>:<span class="s2">"numeric"</span>,<span class="s2">"metric"</span>:<span class="s2">"a0"</span><span class="o">}</span>,<span class="s2">"threshold"</span>:10,<span class="s2">"intervals"</span>:<span class="o">{</span><span class="s2">"type"</span>:<span class="s2">"intervals"</span>,<span class="s2">"intervals"</span>:<span class="o">[</span><span class="s2">"2015-09-12T00:00:00.000Z/2015-09-13T00:00:00.001Z"</span><span class="o">]}</span>,<span class="s2">"filter"</span>:null,<span class="s2">"granularity"</span>:<span class="o">{</span><span class="s2">"type"</span>:<span class="s2">"all"</span><span class="o">}</span>,<span class="s2">"aggregations"</span>:<span class="o">[{</span><span class="s2">"type"</span>:<span class="s2">"count"</span>,<span class="s2">"name"</span>:<span class="s2">"a0"</span><span class="o">}]</span>,<span class="s2">"postAggregations"</span>:<span class="o">[]</span>,<span class="s2">"context"</span>:<span class="o">{}</span>,<span class="s2">"descending"</span>:false<span class="o">}]</span>, <span class="nv">signature</span><span class="o">=[{</span>d0:STRING, a0:LONG<span class="o">}])</span> │ |
| └─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘ |
| Retrieved <span class="m">1</span> row in <span class="m">0</span>.03s. |
| </code></pre></div> |
| <h2 id="further-reading">Further reading</h2> |
| |
| <p>The <a href="../querying/querying.html">Queries documentation</a> has more information on Druid's native JSON queries.</p> |
| |
| <p>The <a href="../querying/sql.html">Druid SQL documentation</a> has more information on using Druid SQL queries.</p> |
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