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class="navGroups"><div class="navGroup"><h3 class="navGroupCategoryTitle collapsible">Getting started<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/26.0.0/design/index.html">Introduction to Apache Druid</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/tutorials/index.html">Quickstart (local)</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/operations/single-server.html">Single server deployment</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/tutorials/cluster.html">Clustered deployment</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle collapsible">Tutorials<span class="arrow"><svg width="24" height="24" viewBox="0 0 24 24"><path fill="#565656" d="M7.41 15.41L12 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storage</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/tutorials/tutorial-msq-convert-spec.html">Convert ingestion spec to SQL</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/tutorials/tutorial-sql-query-view.html">Get to know Query view</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/tutorials/tutorial-unnest-arrays.html">Unnesting arrays</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/tutorials/tutorial-jupyter-index.html">Jupyter Notebook tutorials</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/tutorials/tutorial-jupyter-docker.html">Docker for tutorials</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/tutorials/tutorial-jdbc.html">JDBC connector</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle collapsible">Design<span class="arrow"><svg width="24" height="24" viewBox="0 0 24 24"><path fill="#565656" d="M7.41 15.41L12 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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/26.0.0/ingestion/index.html">Ingestion</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/data-formats.html">Data formats</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/data-model.html">Data model</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/rollup.html">Data rollup</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/partitioning.html">Partitioning</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/ingestion-spec.html">Ingestion spec</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/schema-design.html">Schema design tips</a></li><div class="navGroup subNavGroup"><h4 class="navGroupSubcategoryTitle">Stream ingestion</h4><ul><li class="navListItem"><a class="navItem" href="/docs/26.0.0/development/extensions-core/kafka-ingestion.html">Apache Kafka ingestion</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/development/extensions-core/kafka-supervisor-reference.html">Apache Kafka supervisor</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/development/extensions-core/kafka-supervisor-operations.html">Apache Kafka operations</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/development/extensions-core/kinesis-ingestion.html">Amazon Kinesis</a></li></ul></div><div class="navGroup subNavGroup"><h4 class="navGroupSubcategoryTitle">Batch ingestion</h4><ul><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/native-batch.html">Native batch</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/native-batch-input-sources.html">Native batch: input sources</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/migrate-from-firehose.html">Migrate from firehose</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/hadoop.html">Hadoop-based</a></li></ul></div><div class="navGroup subNavGroup"><h4 class="navGroupSubcategoryTitle">SQL-based ingestion 🆕</h4><ul><li class="navListItem"><a class="navItem" href="/docs/26.0.0/multi-stage-query/index.html">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/multi-stage-query/concepts.html">Key concepts</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/multi-stage-query/api.html">API</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/multi-stage-query/security.html">Security</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/multi-stage-query/examples.html">Examples</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/multi-stage-query/reference.html">Reference</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/multi-stage-query/known-issues.html">Known issues</a></li></ul></div><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/tasks.html">Task reference</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/ingestion/faq.html">Troubleshooting FAQ</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle collapsible">Data management<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/26.0.0/data-management/index.html">Overview</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/data-management/update.html">Data updates</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/data-management/delete.html">Data deletion</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/data-management/schema-changes.html">Schema changes</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/data-management/compaction.html">Compaction</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/data-management/automatic-compaction.html">Automatic compaction</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle collapsible">Querying<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"><div class="navGroup subNavGroup"><h4 class="navGroupSubcategoryTitle">Druid SQL</h4><ul><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql.html">Overview and syntax</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-data-types.html">SQL data types</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-operators.html">Operators</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-scalar.html">Scalar functions</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-aggregations.html">Aggregation functions</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-multivalue-string-functions.html">Multi-value string functions</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-json-functions.html">JSON functions</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-functions.html">All functions</a></li><li class="navListItem navListItemActive"><a class="navItem" href="/docs/26.0.0/querying/sql-api.html">Druid SQL API</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-jdbc.html">JDBC driver API</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-query-context.html">SQL query context</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-metadata-tables.html">SQL metadata tables</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sql-translation.html">SQL query translation</a></li></ul></div><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/querying.html">Native queries</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/query-execution.html">Query execution</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/troubleshooting.html">Troubleshooting</a></li><div class="navGroup subNavGroup"><h4 class="navGroupSubcategoryTitle">Concepts</h4><ul><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/datasource.html">Datasources</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/joins.html">Joins</a></li><li class="navListItem"><a 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class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/topnquery.html">TopN</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/groupbyquery.html">GroupBy</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/scan-query.html">Scan</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/searchquery.html">Search</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/timeboundaryquery.html">TimeBoundary</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/segmentmetadataquery.html">SegmentMetadata</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/datasourcemetadataquery.html">DatasourceMetadata</a></li></ul></div><div class="navGroup subNavGroup"><h4 class="navGroupSubcategoryTitle">Native query components</h4><ul><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/filters.html">Filters</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/granularities.html">Granularities</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/dimensionspecs.html">Dimensions</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/aggregations.html">Aggregations</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/post-aggregations.html">Post-aggregations</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/misc/math-expr.html">Expressions</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/having.html">Having filters (groupBy)</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/limitspec.html">Sorting and limiting (groupBy)</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/topnmetricspec.html">Sorting (topN)</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/sorting-orders.html">String comparators</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/querying/virtual-columns.html">Virtual columns</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/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/26.0.0/configuration/index.html">Configuration reference</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/development/extensions.html">Extensions</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/configuration/logging.html">Logging</a></li></ul></div><div class="navGroup"><h3 class="navGroupCategoryTitle collapsible">Operations<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/26.0.0/operations/web-console.html">Web console</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/operations/java.html">Java runtime</a></li><div class="navGroup subNavGroup"><h4 class="navGroupSubcategoryTitle">Security</h4><ul><li class="navListItem"><a class="navItem" href="/docs/26.0.0/operations/security-overview.html">Security overview</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/operations/security-user-auth.html">User authentication and authorization</a></li><li class="navListItem"><a class="navItem" href="/docs/26.0.0/operations/auth-ldap.html">LDAP auth</a></li><li 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| <blockquote> |
| <p>Apache Druid supports two query languages: Druid SQL and <a href="/docs/26.0.0/querying/querying.html">native queries</a>. |
| This document describes the SQL language.</p> |
| </blockquote> |
| <p>You can submit and cancel <a href="/docs/26.0.0/querying/sql.html">Druid SQL</a> queries using the Druid SQL API. |
| The Druid SQL API is available at <code>https://ROUTER:8888/druid/v2/sql</code>, where <code>ROUTER</code> is the IP address of the Druid Router.</p> |
| <h2><a class="anchor" aria-hidden="true" id="submit-a-query"></a><a href="#submit-a-query" 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>Submit a query</h2> |
| <p>To use the SQL API to make Druid SQL queries, send your query to the Router using the POST method:</p> |
| <pre><code class="hljs">POST https:<span class="hljs-regexp">//</span>ROUTER:<span class="hljs-number">8888</span><span class="hljs-regexp">/druid/</span>v2<span class="hljs-regexp">/sql/</span> |
| </code></pre> |
| <p>Submit your query as the value of a "query" field in the JSON object within the request payload. For example:</p> |
| <pre><code class="hljs css language-json">{<span class="hljs-attr">"query"</span> : <span class="hljs-string">"SELECT COUNT(*) FROM data_source WHERE foo = 'bar'"</span>} |
| </code></pre> |
| <h3><a class="anchor" aria-hidden="true" id="request-body"></a><a href="#request-body" 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>Request body</h3> |
| <table> |
| <thead> |
| <tr><th>Property</th><th>Description</th><th>Default</th></tr> |
| </thead> |
| <tbody> |
| <tr><td><code>query</code></td><td>SQL query string.</td><td>none (required)</td></tr> |
| <tr><td><code>resultFormat</code></td><td>Format of query results. See <a href="#responses">Responses</a> for details.</td><td><code>"object"</code></td></tr> |
| <tr><td><code>header</code></td><td>Whether or not to include a header row for the query result. See <a href="#responses">Responses</a> for details.</td><td><code>false</code></td></tr> |
| <tr><td><code>typesHeader</code></td><td>Whether or not to include type information in the header. Can only be set when <code>header</code> is also <code>true</code>. See <a href="#responses">Responses</a> for details.</td><td><code>false</code></td></tr> |
| <tr><td><code>sqlTypesHeader</code></td><td>Whether or not to include SQL type information in the header. Can only be set when <code>header</code> is also <code>true</code>. See <a href="#responses">Responses</a> for details.</td><td><code>false</code></td></tr> |
| <tr><td><code>context</code></td><td>JSON object containing <a href="/docs/26.0.0/querying/sql-query-context.html">SQL query context parameters</a>.</td><td><code>{}</code> (empty)</td></tr> |
| <tr><td><code>parameters</code></td><td>List of query parameters for parameterized queries. Each parameter in the list should be a JSON object like <code>{"type": "VARCHAR", "value": "foo"}</code>. The type should be a SQL type; see <a href="/docs/26.0.0/querying/sql-data-types.html">Data types</a> for a list of supported SQL types.</td><td><code>[]</code> (empty)</td></tr> |
| </tbody> |
| </table> |
| <p>You can use <em>curl</em> to send SQL queries from the command-line:</p> |
| <pre><code class="hljs css language-bash">$ cat query.json |
| {<span class="hljs-string">"query"</span>:<span class="hljs-string">"SELECT COUNT(*) AS TheCount FROM data_source"</span>} |
| |
| $ curl -XPOST -H<span class="hljs-string">'Content-Type: application/json'</span> http://ROUTER:8888/druid/v2/sql/ -d @query.json |
| [{<span class="hljs-string">"TheCount"</span>:24433}] |
| </code></pre> |
| <p>There are a variety of <a href="/docs/26.0.0/querying/sql-query-context.html">SQL query context parameters</a> you can provide by adding a "context" map, |
| like:</p> |
| <pre><code class="hljs css language-json">{ |
| <span class="hljs-attr">"query"</span> : <span class="hljs-string">"SELECT COUNT(*) FROM data_source WHERE foo = 'bar' AND __time > TIMESTAMP '2000-01-01 00:00:00'"</span>, |
| <span class="hljs-attr">"context"</span> : { |
| <span class="hljs-attr">"sqlTimeZone"</span> : <span class="hljs-string">"America/Los_Angeles"</span> |
| } |
| } |
| </code></pre> |
| <p>Parameterized SQL queries are also supported:</p> |
| <pre><code class="hljs css language-json">{ |
| <span class="hljs-attr">"query"</span> : <span class="hljs-string">"SELECT COUNT(*) FROM data_source WHERE foo = ? AND __time > ?"</span>, |
| <span class="hljs-attr">"parameters"</span>: [ |
| { <span class="hljs-attr">"type"</span>: <span class="hljs-string">"VARCHAR"</span>, <span class="hljs-attr">"value"</span>: <span class="hljs-string">"bar"</span>}, |
| { <span class="hljs-attr">"type"</span>: <span class="hljs-string">"TIMESTAMP"</span>, <span class="hljs-attr">"value"</span>: <span class="hljs-string">"2000-01-01 00:00:00"</span> } |
| ] |
| } |
| </code></pre> |
| <p>Metadata is available over HTTP POST by querying <a href="/docs/26.0.0/querying/sql-metadata-tables.html">metadata tables</a>.</p> |
| <h3><a class="anchor" aria-hidden="true" id="responses"></a><a href="#responses" 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>Responses</h3> |
| <h4><a class="anchor" aria-hidden="true" id="result-formats"></a><a href="#result-formats" 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>Result formats</h4> |
| <p>Druid SQL's HTTP POST API supports a variety of result formats. You can specify these by adding a "resultFormat" |
| parameter, like:</p> |
| <pre><code class="hljs css language-json">{ |
| <span class="hljs-attr">"query"</span> : <span class="hljs-string">"SELECT COUNT(*) FROM data_source WHERE foo = 'bar' AND __time > TIMESTAMP '2000-01-01 00:00:00'"</span>, |
| <span class="hljs-attr">"resultFormat"</span> : <span class="hljs-string">"array"</span> |
| } |
| </code></pre> |
| <p>To request a header with information about column names, set <code>header</code> to true in your request. |
| When you set <code>header</code> to true, you can optionally include <code>typesHeader</code> and <code>sqlTypesHeader</code> as well, which gives |
| you information about <a href="/docs/26.0.0/querying/sql-data-types.html">Druid runtime and SQL types</a> respectively. You can request all these headers |
| with a request like:</p> |
| <pre><code class="hljs css language-json">{ |
| <span class="hljs-attr">"query"</span> : <span class="hljs-string">"SELECT COUNT(*) FROM data_source WHERE foo = 'bar' AND __time > TIMESTAMP '2000-01-01 00:00:00'"</span>, |
| <span class="hljs-attr">"resultFormat"</span> : <span class="hljs-string">"array"</span>, |
| <span class="hljs-attr">"header"</span> : <span class="hljs-literal">true</span>, |
| <span class="hljs-attr">"typesHeader"</span> : <span class="hljs-literal">true</span>, |
| <span class="hljs-attr">"sqlTypesHeader"</span> : <span class="hljs-literal">true</span> |
| } |
| </code></pre> |
| <p>The following table shows supported result formats:</p> |
| <table> |
| <thead> |
| <tr><th>Format</th><th>Description</th><th>Header description</th><th>Content-Type</th></tr> |
| </thead> |
| <tbody> |
| <tr><td><code>object</code></td><td>The default, a JSON array of JSON objects. Each object's field names match the columns returned by the SQL query, and are provided in the same order as the SQL query.</td><td>If <code>header</code> is true, the first row is an object where the fields are column names. Each field's value is either null (if <code>typesHeader</code> and <code>sqlTypesHeader</code> are false) or an object that contains the Druid type as <code>type</code> (if <code>typesHeader</code> is true) and the SQL type as <code>sqlType</code> (if <code>sqlTypesHeader</code> is true).</td><td>application/json</td></tr> |
| <tr><td><code>array</code></td><td>JSON array of JSON arrays. Each inner array has elements matching the columns returned by the SQL query, in order.</td><td>If <code>header</code> is true, the first row is an array of column names. If <code>typesHeader</code> is true, the next row is an array of Druid types. If <code>sqlTypesHeader</code> is true, the next row is an array of SQL types.</td><td>application/json</td></tr> |
| <tr><td><code>objectLines</code></td><td>Like <code>object</code>, but the JSON objects are separated by newlines instead of being wrapped in a JSON array. This can make it easier to parse the entire response set as a stream, if you do not have ready access to a streaming JSON parser. To make it possible to detect a truncated response, this format includes a trailer of one blank line.</td><td>Same as <code>object</code>.</td><td>text/plain</td></tr> |
| <tr><td><code>arrayLines</code></td><td>Like <code>array</code>, but the JSON arrays are separated by newlines instead of being wrapped in a JSON array. This can make it easier to parse the entire response set as a stream, if you do not have ready access to a streaming JSON parser. To make it possible to detect a truncated response, this format includes a trailer of one blank line.</td><td>Same as <code>array</code>, except the rows are separated by newlines.</td><td>text/plain</td></tr> |
| <tr><td><code>csv</code></td><td>Comma-separated values, with one row per line. Individual field values may be escaped by being surrounded in double quotes. If double quotes appear in a field value, they will be escaped by replacing them with double-double-quotes like <code>""this""</code>. To make it possible to detect a truncated response, this format includes a trailer of one blank line.</td><td>Same as <code>array</code>, except the lists are in CSV format.</td><td>text/csv</td></tr> |
| </tbody> |
| </table> |
| <p>If <code>typesHeader</code> is set to true, <a href="/docs/26.0.0/querying/sql-data-types.html">Druid type</a> information is included in the response. Complex types, |
| like sketches, will be reported as <code>COMPLEX<typeName></code> if a particular complex type name is known for that field, |
| or as <code>COMPLEX</code> if the particular type name is unknown or mixed. If <code>sqlTypesHeader</code> is set to true, |
| <a href="/docs/26.0.0/querying/sql-data-types.html">SQL type</a> information is included in the response. It is possible to set both <code>typesHeader</code> and |
| <code>sqlTypesHeader</code> at once. Both parameters require that <code>header</code> is also set.</p> |
| <p>To aid in building clients that are compatible with older Druid versions, Druid returns the HTTP header |
| <code>X-Druid-SQL-Header-Included: yes</code> if <code>header</code> was set to true and if the version of Druid the client is connected to |
| understands the <code>typesHeader</code> and <code>sqlTypesHeader</code> parameters. This HTTP response header is present irrespective of |
| whether <code>typesHeader</code> or <code>sqlTypesHeader</code> are set or not.</p> |
| <p>Druid returns the SQL query identifier in the <code>X-Druid-SQL-Query-Id</code> HTTP header. |
| This query id will be assigned the value of <code>sqlQueryId</code> from the <a href="/docs/26.0.0/querying/sql-query-context.html">query context parameters</a> |
| if specified, else Druid will generate a SQL query id for you.</p> |
| <h4><a class="anchor" aria-hidden="true" id="errors"></a><a href="#errors" 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>Errors</h4> |
| <p>Errors that occur before the response body is sent will be reported in JSON, with an HTTP 500 status code, in the |
| same format as <a href="/docs/26.0.0/querying/querying.html#query-errors">native Druid query errors</a>. If an error occurs while the response body is |
| being sent, at that point it is too late to change the HTTP status code or report a JSON error, so the response will |
| simply end midstream and an error will be logged by the Druid server that was handling your request.</p> |
| <p>As a caller, it is important that you properly handle response truncation. This is easy for the <code>object</code> and <code>array</code> |
| formats, since truncated responses will be invalid JSON. For the line-oriented formats, you should check the |
| trailer they all include: one blank line at the end of the result set. If you detect a truncated response, either |
| through a JSON parsing error or through a missing trailing newline, you should assume the response was not fully |
| delivered due to an error.</p> |
| <h2><a class="anchor" aria-hidden="true" id="cancel-a-query"></a><a href="#cancel-a-query" 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>Cancel a query</h2> |
| <p>You can use the HTTP DELETE method to cancel a SQL query on either the Router or the Broker. When you cancel a query, Druid handles the cancellation in a best-effort manner. It marks the query canceled immediately and aborts the query execution as soon as possible. However, your query may run for a short time after your cancellation request.</p> |
| <p>Druid SQL's HTTP DELETE method uses the following syntax:</p> |
| <pre><code class="hljs">DELETE https:<span class="hljs-regexp">//</span>ROUTER:<span class="hljs-number">8888</span><span class="hljs-regexp">/druid/</span>v2<span class="hljs-regexp">/sql/</span>{sqlQueryId} |
| </code></pre> |
| <p>The DELETE method requires the <code>sqlQueryId</code> path parameter. To predict the query id you must set it in the query context. Druid does not enforce unique <code>sqlQueryId</code> in the query context. If you issue a cancel request for a <code>sqlQueryId</code> active in more than one query context, Druid cancels all requests that use the query id.</p> |
| <p>For example if you issue the following query:</p> |
| <pre><code class="hljs css language-bash">curl --request POST <span class="hljs-string">'https://ROUTER:8888/druid/v2/sql'</span> \ |
| --header <span class="hljs-string">'Content-Type: application/json'</span> \ |
| --data-raw <span class="hljs-string">'{"query" : "SELECT sleep(CASE WHEN sum_added > 0 THEN 1 ELSE 0 END) FROM wikiticker WHERE sum_added > 0 LIMIT 15", |
| "context" : {"sqlQueryId" : "myQuery01"}}'</span> |
| </code></pre> |
| <p>You can cancel the query using the query id <code>myQuery01</code> as follows:</p> |
| <pre><code class="hljs css language-bash">curl --request DELETE <span class="hljs-string">'https://ROUTER:8888/druid/v2/sql/myQuery01'</span> \ |
| </code></pre> |
| <p>Cancellation requests require READ permission on all resources used in the sql query.</p> |
| <p>Druid returns an HTTP 202 response for successful deletion requests.</p> |
| <p>Druid returns an HTTP 404 response in the following cases:</p> |
| <ul> |
| <li><code>sqlQueryId</code> is incorrect.</li> |
| <li>The query completes before your cancellation request is processed.</li> |
| </ul> |
| <p>Druid returns an HTTP 403 response for authorization failure.</p> |
| </span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/26.0.0/querying/sql-functions.html"><span class="arrow-prev">← </span><span>All functions</span></a><a class="docs-next button" href="/docs/26.0.0/querying/sql-jdbc.html"><span>JDBC driver API</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#submit-a-query">Submit a query</a><ul class="toc-headings"><li><a href="#request-body">Request body</a></li><li><a href="#responses">Responses</a></li></ul></li><li><a href="#cancel-a-query">Cancel a query</a></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/26.0.0/">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 © 2022 <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/npm/docsearch.js@2/dist/cdn/docsearch.min.js"></script><script> |
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