{
    "queryType": "groupBy",
    "dataSource": "randSeq",
    "granularity": "all",
    "dimensions": [],
    "aggregations":[
    { "type": "count", "name": "rows"},
    { "type": "doubleSum", "fieldName": "events", "name": "e"},
    { "type": "doubleSum", "fieldName": "outColumn", "name": "randomNumberSum"}
    ],
    "postAggregations":[
    {  "type":"arithmetic",
       "name":"avg_random",
       "fn":"/",
       "fields":[ {"type":"fieldAccess","name":"randomNumberSum","fieldName":"randomNumberSum"},
                  {"type":"fieldAccess","name":"rows","fieldName":"rows"} ]}
    ],
    "intervals":["2012-10-01T00:00/2020-01-01T00"]
}