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APIs

Broker Query API

REST API on the Broker

Pinot can be queried via a broker endpoint as follows. This example assumes broker is running on localhost:8099

The Pinot REST API can be accessed by invoking POST operation with a JSON body containing the parameter sql to the /query/sql endpoint on a broker.

$ curl -H "Content-Type: application/json" -X POST \
   -d '{"sql":"select foo, count(*) from myTable group by foo limit 100"}' \
   http://localhost:8099/query/sql

Note

This endpoint is deprecated, and will soon be removed. The standard-SQL endpoint is the recommended endpoint.

The PQL endpoint can be accessed by invoking POST operation with a JSON body containing the parameter pql to the /query endpoint on a broker.

$ curl -H "Content-Type: application/json" -X POST \
   -d '{"pql":"select count(*) from myTable group by foo top 100"}' \
   http://localhost:8099/query

Query Console

Query Console can be used for running ad-hoc queries (checkbox available to query the PQL endpoint). The Query Console can be accessed by entering the <controller host>:<controller port> in your browser

pinot-admin

You can also query using the pinot-admin scripts. Make sure you follow instructions in Getting Pinot to get Pinot locally, and then

cd incubator-pinot/pinot-tools/target/pinot-tools-pkg 
bin/pinot-admin.sh PostQuery \
  -queryType sql \
  -brokerPort 8000 \
  -query "select count(*) from baseballStats"
2020/03/04 12:46:33.459 INFO [PostQueryCommand] [main] Executing command: PostQuery -brokerHost localhost -brokerPort 8000 -queryType sql -query select count(*) from baseballStats
2020/03/04 12:46:33.854 INFO [PostQueryCommand] [main] Result: {"resultTable":{"dataSchema":{"columnDataTypes":["LONG"],"columnNames":["count(*)"]},"rows":[[97889]]},"exceptions":[],"numServersQueried":1,"numServersResponded":1,"numSegmentsQueried":1,"numSegmentsProcessed":1,"numSegmentsMatched":1,"numConsumingSegmentsQueried":0,"numDocsScanned":97889,"numEntriesScannedInFilter":0,"numEntriesScannedPostFilter":0,"numGroupsLimitReached":false,"totalDocs":97889,"timeUsedMs":185,"segmentStatistics":[],"traceInfo":{},"minConsumingFreshnessTimeMs":0}

Query Response Format

Standard-SQL response

Response is returned in a SQL-like tabular structure. Note, this is the response returned from the standard-SQL endpoint. For PQL endpoint response, skip to PQL endpoint response

$ curl -H "Content-Type: application/json" -X POST \
   -d '{"sql":"SELECT moo, bar, foo FROM myTable ORDER BY foo DESC"}' \
   http://localhost:8099/query/sql
{
  "exceptions": [], 
  "minConsumingFreshnessTimeMs": 0, 
  "numConsumingSegmentsQueried": 0, 
  "numDocsScanned": 6, 
  "numEntriesScannedInFilter": 0, 
  "numEntriesScannedPostFilter": 18, 
  "numGroupsLimitReached": false, 
  "numSegmentsMatched": 2, 
  "numSegmentsProcessed": 2, 
  "numSegmentsQueried": 2, 
  "numServersQueried": 1, 
  "numServersResponded": 1, 
  "resultTable": {
    "dataSchema": {
      "columnDataTypes": [
        "LONG",
        "INT",
        "STRING"
      ], 
      "columnNames": [
        "moo", 
        "bar",
        "foo"
      ]
    }, 
    "rows": [
      [ 
        40015, 
        2019,
        "xyz"
      ], 
      [
        1002,
        2001,
        "pqr"
      ], 
      [
        20555,
        1988,
        "pqr"
      ],
      [ 
        203,
        2010,
        "pqr"
      ], 
      [
        500,
        2008,
        "abc"
      ], 
      [
        60, 
        2003,
        "abc"
      ]
    ]
  }, 
  "segmentStatistics": [], 
  "timeUsedMs": 4, 
  "totalDocs": 6, 
  "traceInfo": {}
}

$ curl -X POST \
  -d '{"sql":"SELECT SUM(moo), MAX(bar), COUNT(*) FROM myTable"}' \
  localhost:8099/query/sql -H "Content-Type: application/json" 
{
  "exceptions": [], 
  "minConsumingFreshnessTimeMs": 0, 
  "numConsumingSegmentsQueried": 0, 
  "numDocsScanned": 6, 
  "numEntriesScannedInFilter": 0, 
  "numEntriesScannedPostFilter": 12, 
  "numGroupsLimitReached": false, 
  "numSegmentsMatched": 2, 
  "numSegmentsProcessed": 2, 
  "numSegmentsQueried": 2, 
  "numServersQueried": 1, 
  "numServersResponded": 1, 
  "resultTable": {
    "dataSchema": {
      "columnDataTypes": [
        "DOUBLE", 
        "DOUBLE", 
        "LONG"
      ], 
      "columnNames": [
        "sum(moo)", 
        "max(bar)", 
        "count(*)"
      ]
    }, 
    "rows": [
      [
        62335, 
        2019.0, 
        6
      ]
    ]
  }, 
  "segmentStatistics": [], 
  "timeUsedMs": 87, 
  "totalDocs": 6, 
  "traceInfo": {}
}

$ curl -X POST \
  -d '{"sql":"SELECT SUM(moo), MAX(bar) FROM myTable GROUP BY foo ORDER BY foo"}' \
  localhost:8099/query/sql -H "Content-Type: application/json" 
{
  "exceptions": [], 
  "minConsumingFreshnessTimeMs": 0, 
  "numConsumingSegmentsQueried": 0, 
  "numDocsScanned": 6, 
  "numEntriesScannedInFilter": 0, 
  "numEntriesScannedPostFilter": 18, 
  "numGroupsLimitReached": false, 
  "numSegmentsMatched": 2, 
  "numSegmentsProcessed": 2, 
  "numSegmentsQueried": 2, 
  "numServersQueried": 1, 
  "numServersResponded": 1, 
  "resultTable": {
    "dataSchema": {
      "columnDataTypes": [
        "STRING", 
        "DOUBLE", 
        "DOUBLE"
      ], 
      "columnNames": [
        "foo", 
        "sum(moo)", 
        "max(bar)"
      ]
    }, 
    "rows": [
      [
        "abc", 
        560.0, 
        2008.0
      ], 
      [
        "pqr", 
        21760.0, 
        2010.0
      ], 
      [
        "xyz", 
        40015.0, 
        2019.0
      ]
    ]
  }, 
  "segmentStatistics": [], 
  "timeUsedMs": 15, 
  "totalDocs": 6, 
  "traceInfo": {}
}

PQL response

Note

PQL endpoint is deprecated, and will soon be removed. The standard sql endpoint is the recommended endpoint.

The response received from PQL endpoint is different depending on the type of the query.

curl -X POST \
  -d '{"pql":"select * from flights limit 3"}' \
  http://localhost:8099/query


{
 "selectionResults":{
    "columns":[
       "Cancelled",
       "Carrier",
       "DaysSinceEpoch",
       "Delayed",
       "Dest",
       "DivAirports",
       "Diverted",
       "Month",
       "Origin",
       "Year"
    ],
    "results":[
       [
          "0",
          "AA",
          "16130",
          "0",
          "SFO",
          [],
          "0",
          "3",
          "LAX",
          "2014"
       ],
       [
          "0",
          "AA",
          "16130",
          "0",
          "LAX",
          [],
          "0",
          "3",
          "SFO",
          "2014"
       ],
       [
          "0",
          "AA",
          "16130",
          "0",
          "SFO",
          [],
          "0",
          "3",
          "LAX",
          "2014"
       ]
    ]
 },
 "traceInfo":{},
 "numDocsScanned":3,
 "aggregationResults":[],
 "timeUsedMs":10,
 "segmentStatistics":[],
 "exceptions":[],
 "totalDocs":102
}

curl -X POST \
  -d '{"pql":"select count(*) from flights"}' \
  http://localhost:8099/query


{
 "traceInfo":{},
 "numDocsScanned":17,
 "aggregationResults":[
    {
       "function":"count_star",
       "value":"17"
    }
 ],
 "timeUsedMs":27,
 "segmentStatistics":[],
 "exceptions":[],
 "totalDocs":17
}

curl -X POST \
  -d '{"pql":"select count(*) from flights group by Carrier"}' \
  http://localhost:8099/query


{
 "traceInfo":{},
 "numDocsScanned":23,
 "aggregationResults":[
    {
       "groupByResult":[
          {
             "value":"10",
             "group":["AA"]
          },
          {
             "value":"9",
             "group":["VX"]
          },
          {
             "value":"4",
             "group":["WN"]
          }
       ],
       "function":"count_star",
       "groupByColumns":["Carrier"]
    }
 ],
 "timeUsedMs":47,
 "segmentStatistics":[],
 "exceptions":[],
 "totalDocs":23
}