deng2 opened a new issue #10957:
URL: https://github.com/apache/druid/issues/10957
doubleMean aggregation metric in subquery cannot be further aggregated
### Affected Version
0.20
### Description
I have a groupBy query with subquery.
In the subquery, I aggregate the metric with doubleMean. I wish to further
aggregate with doubleSum in outer query. It won't work and the result is always
0. Is this expected?
`{
"queryType": "groupBy",
"dataSource": {
"type": "query",
"query": {
"queryType": "groupBy",
"dataSource": "viaops_metric_specguide",
"intervals": [
"2020-02-23T04:00+12:00/2020-03-01T04:00+12:00",
"2020-02-16T04:00+12:00/2020-02-23T04:00+12:00",
"2020-02-09T04:00+12:00/2020-02-16T04:00+12:00",
"2020-02-02T04:00+12:00/2020-02-09T04:00+12:00",
"2020-01-26T04:00+12:00/2020-02-02T04:00+12:00"
],
"filter": {
"type": "and",
"fields": [
{
"type": "selector",
"dimension": "metric_name",
"value": "Successful API Attempt"
},
{
"type": "selector",
"dimension": "app",
"value": "Quantum"
},
{
"type": "in",
"dimension": "api",
"values": [
"",
"stbDeviceEdgeRefresh",
"deviceEdgeDevices",
"avappsTermsAndConditions",
"viewingHistoryEdgeViewingHistory",
"loginEdgeSessionInfo",
"searchEdgeSavedSearchRecent",
"searchEdgeUnfiltered",
"networkSettingsEdgeSettings",
"viewingHistoryEdgeCollated",
"watchListEdgeWatchList",
"lrmEdgeEntitlements",
"companionDevicesEdgeHandoff",
"searchedgeV1CatalogUnfiltered",
"loginEdgeLogin",
"savedSearchEdgeSavedSearch"
]
}
]
},
"granularity": {
"type": "period",
"period": "PT5M",
"timeZone": "Pacific/Kwajalein",
"origin": "2020-03-01T04:00+12:00"
},
"dimensions": [
{
"type": "default",
"dimension": "app"
},
{
"type": "default",
"dimension": "metric_name"
}
],
"aggregations": [
{
"type": "doubleMean",
"name": "__aggr",
"fieldName": "metric_value"
}
],
"context": {
"populateCache": false,
"useCache": false,
"serializeDateTimeAsLong": true
}
}
},
"aggregations": [
{
"type": "count",
"name": "__count"
},
{
"type": "doubleSum",
"name": "__sum",
"fieldName": "__aggr"
}
],
"intervals": [
"-10000/10000"
],
"granularity": {
"type": "period",
"period": "PT1H",
"timeZone": "Pacific/Kwajalein",
"origin": "2020-03-01T04:00+12:00"
},
"dimensions": [
{
"type": "default",
"dimension": "app"
},
{
"type": "default",
"dimension": "metric_name"
}
],
"context": {
"populateCache": false,
"useCache": false,
"serializeDateTimeAsLong": true
}
}`
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