---
id: sql-api
title: Druid SQL API
sidebar_label: Druid SQL
---
Apache Druid supports two query languages: [Druid SQL](../querying/sql.md) and [native queries](../querying/querying.md). This topic describes the SQL language.
In this topic, `http://ROUTER_IP:ROUTER_PORT` is a placeholder for your Router service address and port. Replace it with the information for your deployment. For example, use `http://localhost:8888` for quickstart deployments.
## Query from Historicals
### Submit a query
Submits a SQL-based query in the JSON request body. Returns a JSON object with the query results and optional metadata for the results. You can also use this endpoint to query [metadata tables](../querying/sql-metadata-tables.md).
Each query has an associated SQL query ID. You can set this ID manually using the SQL context parameter `sqlQueryId`. If not set, Druid automatically generates `sqlQueryId` and returns it in the response header for `X-Druid-SQL-Query-Id`. Note that you need the `sqlQueryId` to [cancel a query](#cancel-a-query) endpoint.
#### URL
POST /druid/v2/sql
#### Request body
The request body takes the following properties:
* `query`: SQL query string.
* `resultFormat`: String that indicates the format to return query results. Select one of the following formats:
* `object`: Returns a JSON array of JSON objects with the HTTP header `Content-Type: application/json`.
* `array`: Returns a JSON array of JSON arrays with the HTTP header `Content-Type: application/json`.
* `objectLines`: Returns newline-delimited JSON objects with a trailing blank line. Returns the HTTP header `Content-Type: text/plain`.
* `arrayLines`: Returns newline-delimited JSON arrays with a trailing blank line. Returns the HTTP header `Content-Type: text/plain`.
* `csv`: Returns a comma-separated values with one row per line and a trailing blank line. Returns the HTTP header `Content-Type: text/csv`.
* `header`: Boolean value that determines whether to return information on column names. When set to `true`, Druid returns the column names as the first row of the results. To also get information on the column types, set `typesHeader` or `sqlTypesHeader` to `true`. For a comparative overview of data formats and configurations for the header, see the [Query output format](#query-output-format) table.
* `typesHeader`: Adds Druid runtime type information in the header. Requires `header` to be set to `true`. Complex types, like sketches, will be reported as `COMPLEX` if a particular complex type name is known for that field, or as `COMPLEX` if the particular type name is unknown or mixed.
* `sqlTypesHeader`: Adds SQL type information in the header. Requires `header` to be set to `true`.
* `context`: JSON object containing optional [SQL query context parameters](../querying/sql-query-context.md), such as to set the query ID, time zone, and whether to use an approximation algorithm for distinct count.
* `parameters`: List of query parameters for parameterized queries. Each parameter in the array should be a JSON object containing the parameter's SQL data type and parameter value. For a list of supported SQL types, see [Data types](../querying/sql-data-types.md).
For example:
```
"parameters": [
{
"type": "VARCHAR",
"value": "bar"
}
]
```
#### Responses
*Successfully submitted query*
*Error thrown due to bad query. Returns a JSON object detailing the error with the following format:*
```json
{
"error": "A well-defined error code.",
"errorMessage": "A message with additional details about the error.",
"errorClass": "Class of exception that caused this error.",
"host": "The host on which the error occurred."
}
```
*Request not sent due to unexpected conditions. Returns a JSON object detailing the error with the following format:*
```json
{
"error": "A well-defined error code.",
"errorMessage": "A message with additional details about the error.",
"errorClass": "Class of exception that caused this error.",
"host": "The host on which the error occurred."
}
```
Older versions of Druid that support the `typesHeader` and `sqlTypesHeader` parameters return the HTTP header `X-Druid-SQL-Header-Included: yes` when you set `header` to `true`. Druid returns the HTTP response header for compatibility, regardless of whether `typesHeader` and `sqlTypesHeader` are set.
---
#### Sample request
The following example retrieves all rows in the `wikipedia` datasource where the `user` is `BlueMoon2662`. The query is assigned the ID `request01` using the `sqlQueryId` context parameter. The optional properties `header`, `typesHeader`, and `sqlTypesHeader` are set to `true` to include type information to the response.
```shell
curl "http://ROUTER_IP:ROUTER_PORT/druid/v2/sql" \
--header 'Content-Type: application/json' \
--data '{
"query": "SELECT * FROM wikipedia WHERE user='\''BlueMoon2662'\''",
"context" : {"sqlQueryId" : "request01"},
"header" : true,
"typesHeader" : true,
"sqlTypesHeader" : true
}'
```
```HTTP
POST /druid/v2/sql HTTP/1.1
Host: http://ROUTER_IP:ROUTER_PORT
Content-Type: application/json
Content-Length: 192
{
"query": "SELECT * FROM wikipedia WHERE user='BlueMoon2662'",
"context" : {"sqlQueryId" : "request01"},
"header" : true,
"typesHeader" : true,
"sqlTypesHeader" : true
}
```
#### Sample response
Click to show sample response
```json
[
{
"__time": {
"type": "LONG",
"sqlType": "TIMESTAMP"
},
"channel": {
"type": "STRING",
"sqlType": "VARCHAR"
},
"cityName": {
"type": "STRING",
"sqlType": "VARCHAR"
},
"comment": {
"type": "STRING",
"sqlType": "VARCHAR"
},
"countryIsoCode": {
"type": "STRING",
"sqlType": "VARCHAR"
},
"countryName": {
"type": "STRING",
"sqlType": "VARCHAR"
},
"isAnonymous": {
"type": "LONG",
"sqlType": "BIGINT"
},
"isMinor": {
"type": "LONG",
"sqlType": "BIGINT"
},
"isNew": {
"type": "LONG",
"sqlType": "BIGINT"
},
"isRobot": {
"type": "LONG",
"sqlType": "BIGINT"
},
"isUnpatrolled": {
"type": "LONG",
"sqlType": "BIGINT"
},
"metroCode": {
"type": "LONG",
"sqlType": "BIGINT"
},
"namespace": {
"type": "STRING",
"sqlType": "VARCHAR"
},
"page": {
"type": "STRING",
"sqlType": "VARCHAR"
},
"regionIsoCode": {
"type": "STRING",
"sqlType": "VARCHAR"
},
"regionName": {
"type": "STRING",
"sqlType": "VARCHAR"
},
"user": {
"type": "STRING",
"sqlType": "VARCHAR"
},
"delta": {
"type": "LONG",
"sqlType": "BIGINT"
},
"added": {
"type": "LONG",
"sqlType": "BIGINT"
},
"deleted": {
"type": "LONG",
"sqlType": "BIGINT"
}
},
{
"__time": "2015-09-12T00:47:53.259Z",
"channel": "#ja.wikipedia",
"cityName": "",
"comment": "/* 対戦通算成績と得失点 */",
"countryIsoCode": "",
"countryName": "",
"isAnonymous": 0,
"isMinor": 1,
"isNew": 0,
"isRobot": 0,
"isUnpatrolled": 0,
"metroCode": 0,
"namespace": "Main",
"page": "アルビレックス新潟の年度別成績一覧",
"regionIsoCode": "",
"regionName": "",
"user": "BlueMoon2662",
"delta": 14,
"added": 14,
"deleted": 0
}
]
```
### Cancel a query
Cancels a query on the Router or the Broker with the associated `sqlQueryId`. The `sqlQueryId` can be manually set when the query is submitted in the query context parameter, or if not set, Druid will generate one and return it in the response header when the query is successfully submitted. Note that Druid does not enforce a unique `sqlQueryId` in the query context. If you've set the same `sqlQueryId` for multiple queries, Druid cancels all requests with that query ID.
When you cancel a query, Druid handles the cancellation in a best-effort manner. Druid immediately marks the query as canceled and aborts the query execution as soon as possible. However, the query may continue running for a short time after you make the cancellation request.
Cancellation requests require READ permission on all resources used in the SQL query.
#### URL
DELETE /druid/v2/sql/:sqlQueryId
#### Responses
*Successfully deleted query*
*Authorization failure*
*Invalid `sqlQueryId` or query was completed before cancellation request*
---
#### Sample request
The following example cancels a request with the set query ID `request01`.
```shell
curl --request DELETE "http://ROUTER_IP:ROUTER_PORT/druid/v2/sql/request01"
```
```HTTP
DELETE /druid/v2/sql/request01 HTTP/1.1
Host: http://ROUTER_IP:ROUTER_PORT
```
#### Sample response
A successful response results in an `HTTP 202` message code and an empty response body.
### Query output format
The following table shows examples of how Druid returns the column names and data types based on the result format and the type request. The examples includes the first row of results, where the value of `user` is `BlueMoon2662`.
```
| Format | typesHeader | sqlTypesHeader | Example Output |
|--------|-------------|----------------|--------------------------------------------------------------------------------------------|
| object | true | false | [ { "user" : { "type" : "STRING" } }, { "user" : "BlueMoon2662" } ] |
| object | true | true | [ { "user" : { "type" : "STRING", "sqlType" : "VARCHAR" } }, { "user" : "BlueMoon2662" } ] |
| object | false | true | [ { "user" : { "sqlType" : "VARCHAR" } }, { "user" : "BlueMoon2662" } ] |
| object | false | false | [ { "user" : null }, { "user" : "BlueMoon2662" } ] |
| array | true | false | [ [ "user" ], [ "STRING" ], [ "BlueMoon2662" ] ] |
| array | true | true | [ [ "user" ], [ "STRING" ], [ "VARCHAR" ], [ "BlueMoon2662" ] ] |
| array | false | true | [ [ "user" ], [ "VARCHAR" ], [ "BlueMoon2662" ] ] |
| array | false | false | [ [ "user" ], [ "BlueMoon2662" ] ] |
| csv | true | false | user STRING BlueMoon2662 |
| csv | true | true | user STRING VARCHAR BlueMoon2662 |
| csv | false | true | user VARCHAR BlueMoon2662 |
| csv | false | false | user BlueMoon2662 |
```
## Query from deep storage
> Query from deep storage is an [experimental feature](../development/experimental.md).
You can use the `sql/statements` endpoint to query segments that exist only in deep storage and are not loaded onto your Historical processes as determined by your load rules.
Note that at least one segment of a datasource must be available on a Historical process so that the Broker can plan your query. A quick way to check if this is true is whether or not a datasource is visible in the Druid console.
For more information, see [Query from deep storage](../querying/query-from-deep-storage.md).
### Submit a query
Submit a query for data stored in deep storage. Any data ingested into Druid is placed into deep storage. The query is contained in the "query" field in the JSON object within the request payload.
Note that at least part of a datasource must be available on a Historical process so that Druid can plan your query and only the user who submits a query can see the results.
#### URL
POST /druid/v2/sql/statements
#### Request body
Generally, the `sql` and `sql/statements` endpoints support the same response body fields with minor differences. For general information about the available fields, see [Submit a query to the `sql` endpoint](#submit-a-query).
Keep the following in mind when submitting queries to the `sql/statements` endpoint:
- There are additional context parameters for `sql/statements`:
- `executionMode` determines how query results are fetched. Druid currently only supports `ASYNC`. You must manually retrieve your results after the query completes.
- `selectDestination` determines where final results get written. By default, results are written to task reports. Set this parameter to `durableStorage` to instruct Druid to write the results from SELECT queries to durable storage, which allows you to fetch larger result sets. Note that this requires you to have [durable storage for MSQ enabled](../operations/durable-storage.md).
- The only supported value for `resultFormat` is JSON LINES.
#### Responses
*Successfully queried from deep storage*
*Error thrown due to bad query. Returns a JSON object detailing the error with the following format:*
```json
{
"error": "Summary of the encountered error.",
"errorClass": "Class of exception that caused this error.",
"host": "The host on which the error occurred.",
"errorCode": "Well-defined error code.",
"persona": "Role or persona associated with the error.",
"category": "Classification of the error.",
"errorMessage": "Summary of the encountered issue with expanded information.",
"context": "Additional context about the error."
}
```
---
#### Sample request
```shell
curl "http://ROUTER_IP:ROUTER_PORT/druid/v2/sql/statements" \
--header 'Content-Type: application/json' \
--data '{
"query": "SELECT * FROM wikipedia WHERE user='\''BlueMoon2662'\''",
"context": {
"executionMode":"ASYNC"
}
}'
```
```HTTP
POST /druid/v2/sql/statements HTTP/1.1
Host: http://ROUTER_IP:ROUTER_PORT
Content-Type: application/json
Content-Length: 134
{
"query": "SELECT * FROM wikipedia WHERE user='BlueMoon2662'",
"context": {
"executionMode":"ASYNC"
}
}
```
#### Sample response
Click to show sample response
```json
{
"queryId": "query-b82a7049-b94f-41f2-a230-7fef94768745",
"state": "ACCEPTED",
"createdAt": "2023-07-26T21:16:25.324Z",
"schema": [
{
"name": "__time",
"type": "TIMESTAMP",
"nativeType": "LONG"
},
{
"name": "channel",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "cityName",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "comment",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "countryIsoCode",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "countryName",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "isAnonymous",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "isMinor",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "isNew",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "isRobot",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "isUnpatrolled",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "metroCode",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "namespace",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "page",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "regionIsoCode",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "regionName",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "user",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "delta",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "added",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "deleted",
"type": "BIGINT",
"nativeType": "LONG"
}
],
"durationMs": -1
}
```
### Get query status
Retrieves information about the query associated with the given query ID. The response matches the response from the POST API if the query is accepted or running and the execution mode is `ASYNC`. In addition to the fields that this endpoint shares with `POST /sql/statements`, a completed query's status includes the following:
- A `result` object that summarizes information about your results, such as the total number of rows and sample records.
- A `pages` object that includes the following information for each page of results:
- `numRows`: the number of rows in that page of results.
- `sizeInBytes`: the size of the page.
- `id`: the page number that you can use to reference a specific page when you get query results.
#### URL
GET /druid/v2/sql/statements/:queryId
#### Responses
*Successfully retrieved query status*
*Error thrown due to bad query. Returns a JSON object detailing the error with the following format:*
```json
{
"error": "Summary of the encountered error.",
"errorCode": "Well-defined error code.",
"persona": "Role or persona associated with the error.",
"category": "Classification of the error.",
"errorMessage": "Summary of the encountered issue with expanded information.",
"context": "Additional context about the error."
}
```
#### Sample request
The following example retrieves the status of a query with specified ID `query-9b93f6f7-ab0e-48f5-986a-3520f84f0804`.
```shell
curl "http://ROUTER_IP:ROUTER_PORT/druid/v2/sql/statements/query-9b93f6f7-ab0e-48f5-986a-3520f84f0804"
```
```HTTP
GET /druid/v2/sql/statements/query-9b93f6f7-ab0e-48f5-986a-3520f84f0804 HTTP/1.1
Host: http://ROUTER_IP:ROUTER_PORT
```
#### Sample response
Click to show sample response
```json
{
"queryId": "query-9b93f6f7-ab0e-48f5-986a-3520f84f0804",
"state": "SUCCESS",
"createdAt": "2023-07-26T22:57:46.620Z",
"schema": [
{
"name": "__time",
"type": "TIMESTAMP",
"nativeType": "LONG"
},
{
"name": "channel",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "cityName",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "comment",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "countryIsoCode",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "countryName",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "isAnonymous",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "isMinor",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "isNew",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "isRobot",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "isUnpatrolled",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "metroCode",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "namespace",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "page",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "regionIsoCode",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "regionName",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "user",
"type": "VARCHAR",
"nativeType": "STRING"
},
{
"name": "delta",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "added",
"type": "BIGINT",
"nativeType": "LONG"
},
{
"name": "deleted",
"type": "BIGINT",
"nativeType": "LONG"
}
],
"durationMs": 25591,
"result": {
"numTotalRows": 1,
"totalSizeInBytes": 375,
"dataSource": "__query_select",
"sampleRecords": [
[
1442018873259,
"#ja.wikipedia",
"",
"/* 対戦通算成績と得失点 */",
"",
"",
0,
1,
0,
0,
0,
0,
"Main",
"アルビレックス新潟の年度別成績一覧",
"",
"",
"BlueMoon2662",
14,
14,
0
]
],
"pages": [
{
"id": 0,
"numRows": 1,
"sizeInBytes": 375
}
]
}
}
```
### Get query results
Retrieves results for completed queries. Results are separated into pages, so you can use the optional `page` parameter to refine the results you get. Druid returns information about the composition of each page and its page number (`id`). For information about pages, see [Get query status](#get-query-status).
If a page number isn't passed, all results are returned sequentially in the same response. If you have large result sets, you may encounter timeouts based on the value configured for `druid.router.http.readTimeout`.
When getting query results, keep the following in mind:
- JSON Lines is the only supported result format.
- Getting the query results for an ingestion query returns an empty response.
#### URL
GET /druid/v2/sql/statements/:queryId/results
#### Query parameters
* `page` (optional)
* Type: Int
* Refine paginated results
#### Responses
*Successfully retrieved query results*
*Query in progress. Returns a JSON object detailing the error with the following format:*
```json
{
"error": "Summary of the encountered error.",
"errorCode": "Well-defined error code.",
"persona": "Role or persona associated with the error.",
"category": "Classification of the error.",
"errorMessage": "Summary of the encountered issue with expanded information.",
"context": "Additional context about the error."
}
```
*Query not found, failed or canceled*
*Error thrown due to bad query. Returns a JSON object detailing the error with the following format:*
```json
{
"error": "Summary of the encountered error.",
"errorCode": "Well-defined error code.",
"persona": "Role or persona associated with the error.",
"category": "Classification of the error.",
"errorMessage": "Summary of the encountered issue with expanded information.",
"context": "Additional context about the error."
}
```
---
#### Sample request
The following example retrieves the status of a query with specified ID `query-f3bca219-173d-44d4-bdc7-5002e910352f`.
```shell
curl "http://ROUTER_IP:ROUTER_PORT/druid/v2/sql/statements/query-f3bca219-173d-44d4-bdc7-5002e910352f/results"
```
```HTTP
GET /druid/v2/sql/statements/query-f3bca219-173d-44d4-bdc7-5002e910352f/results HTTP/1.1
Host: http://ROUTER_IP:ROUTER_PORT
```
#### Sample response
Click to show sample response
```json
[
{
"__time": 1442018818771,
"channel": "#en.wikipedia",
"cityName": "",
"comment": "added project",
"countryIsoCode": "",
"countryName": "",
"isAnonymous": 0,
"isMinor": 0,
"isNew": 0,
"isRobot": 0,
"isUnpatrolled": 0,
"metroCode": 0,
"namespace": "Talk",
"page": "Talk:Oswald Tilghman",
"regionIsoCode": "",
"regionName": "",
"user": "GELongstreet",
"delta": 36,
"added": 36,
"deleted": 0
},
{
"__time": 1442018820496,
"channel": "#ca.wikipedia",
"cityName": "",
"comment": "Robot inserta {{Commonscat}} que enllaça amb [[commons:category:Rallicula]]",
"countryIsoCode": "",
"countryName": "",
"isAnonymous": 0,
"isMinor": 1,
"isNew": 0,
"isRobot": 1,
"isUnpatrolled": 0,
"metroCode": 0,
"namespace": "Main",
"page": "Rallicula",
"regionIsoCode": "",
"regionName": "",
"user": "PereBot",
"delta": 17,
"added": 17,
"deleted": 0
},
{
"__time": 1442018825474,
"channel": "#en.wikipedia",
"cityName": "Auburn",
"comment": "/* Status of peremptory norms under international law */ fixed spelling of 'Wimbledon'",
"countryIsoCode": "AU",
"countryName": "Australia",
"isAnonymous": 1,
"isMinor": 0,
"isNew": 0,
"isRobot": 0,
"isUnpatrolled": 0,
"metroCode": 0,
"namespace": "Main",
"page": "Peremptory norm",
"regionIsoCode": "NSW",
"regionName": "New South Wales",
"user": "60.225.66.142",
"delta": 0,
"added": 0,
"deleted": 0
},
{
"__time": 1442018828770,
"channel": "#vi.wikipedia",
"cityName": "",
"comment": "fix Lỗi CS1: ngày tháng",
"countryIsoCode": "",
"countryName": "",
"isAnonymous": 0,
"isMinor": 1,
"isNew": 0,
"isRobot": 1,
"isUnpatrolled": 0,
"metroCode": 0,
"namespace": "Main",
"page": "Apamea abruzzorum",
"regionIsoCode": "",
"regionName": "",
"user": "Cheers!-bot",
"delta": 18,
"added": 18,
"deleted": 0
},
{
"__time": 1442018831862,
"channel": "#vi.wikipedia",
"cityName": "",
"comment": "clean up using [[Project:AWB|AWB]]",
"countryIsoCode": "",
"countryName": "",
"isAnonymous": 0,
"isMinor": 0,
"isNew": 0,
"isRobot": 1,
"isUnpatrolled": 0,
"metroCode": 0,
"namespace": "Main",
"page": "Atractus flammigerus",
"regionIsoCode": "",
"regionName": "",
"user": "ThitxongkhoiAWB",
"delta": 18,
"added": 18,
"deleted": 0
},
{
"__time": 1442018833987,
"channel": "#vi.wikipedia",
"cityName": "",
"comment": "clean up using [[Project:AWB|AWB]]",
"countryIsoCode": "",
"countryName": "",
"isAnonymous": 0,
"isMinor": 0,
"isNew": 0,
"isRobot": 1,
"isUnpatrolled": 0,
"metroCode": 0,
"namespace": "Main",
"page": "Agama mossambica",
"regionIsoCode": "",
"regionName": "",
"user": "ThitxongkhoiAWB",
"delta": 18,
"added": 18,
"deleted": 0
},
{
"__time": 1442018837009,
"channel": "#ca.wikipedia",
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"comment": "/* Imperi Austrohongarès */",
"countryIsoCode": "",
"countryName": "",
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"isMinor": 0,
"isNew": 0,
"isRobot": 0,
"isUnpatrolled": 0,
"metroCode": 0,
"namespace": "Main",
"page": "Campanya dels Balcans (1914-1918)",
"regionIsoCode": "",
"regionName": "",
"user": "Jaumellecha",
"delta": -20,
"added": 0,
"deleted": 20
},
{
"__time": 1442018839591,
"channel": "#en.wikipedia",
"cityName": "",
"comment": "adding comment on notability and possible COI",
"countryIsoCode": "",
"countryName": "",
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"namespace": "Talk",
"page": "Talk:Dani Ploeger",
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"delta": 345,
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},
{
"__time": 1442018841578,
"channel": "#en.wikipedia",
"cityName": "",
"comment": "Copying assessment table to wiki",
"countryIsoCode": "",
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"isMinor": 0,
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"namespace": "User",
"page": "User:WP 1.0 bot/Tables/Project/Pubs",
"regionIsoCode": "",
"regionName": "",
"user": "WP 1.0 bot",
"delta": 121,
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},
{
"__time": 1442018845821,
"channel": "#vi.wikipedia",
"cityName": "",
"comment": "clean up using [[Project:AWB|AWB]]",
"countryIsoCode": "",
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"isMinor": 0,
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}
]
```
### Cancel a query
Cancels a running or accepted query.
#### URL
DELETE /druid/v2/sql/statements/:queryId
#### Responses
*A no op operation since the query is not in a state to be cancelled*
*Successfully accepted query for cancellation*
*Invalid query ID. Returns a JSON object detailing the error with the following format:*
```json
{
"error": "Summary of the encountered error.",
"errorCode": "Well-defined error code.",
"persona": "Role or persona associated with the error.",
"category": "Classification of the error.",
"errorMessage": "Summary of the encountered issue with expanded information.",
"context": "Additional context about the error."
}
```
---
#### Sample request
The following example cancels a query with specified ID `query-945c9633-2fa2-49ab-80ae-8221c38c024da`.
```shell
curl --request DELETE "http://ROUTER_IP:ROUTER_PORT/druid/v2/sql/statements/query-945c9633-2fa2-49ab-80ae-8221c38c024da"
```
```HTTP
DELETE /druid/v2/sql/statements/query-945c9633-2fa2-49ab-80ae-8221c38c024da HTTP/1.1
Host: http://ROUTER_IP:ROUTER_PORT
```
#### Sample response
A successful request returns an HTTP `202 ACCEPTED` message code and an empty response body.