ighack opened a new issue #8147: I don't understand {"name": "latencyMs",
"type": "doubleSum", "fieldName": "latencyMs"}
URL: https://github.com/apache/incubator-druid/issues/8147
I need
select avg(latencyMs),min(latencyMs),sum(latencyMs) from mytable
so make config
I can only do that
"metricsSpec": [
{"name": "views", "type": "count"},
{"name": "latencyMs", "type": "doubleSum", "fieldName": "latencyMs"}
]
or
I should do this
"metricsSpec": [
{"name": "views", "type": "count"},
{"name": "latencyMs", "type": "doubleSum", "fieldName": "latencyMs"},
{"name": "latencyMs", "type": "doubleMin", "fieldName": "latencyMs"},
]
and what about avg?
"metricsSpec": [
{"name": "rows", "type": "count"},
{"name": "latencyMs_SUM", "type": "doubleSum", "fieldName":
"latencyMs"},
{"name": "latencyMs_MIN", "type": "doubleMin", "fieldName":
"latencyMs"},
],
"aggregations" : [{
{"type" : "count", "name" : "rows"},
{"type" : "doubleSum", "name" : "latencyMs_SUM", "fieldName" :
"latencyMs_SUM"}
}],
"postAggregations" : [{
"type" : "arithmetic",
"name" : "latencyMs_AVG",
"fn" : "/",
"fields" : [
{ "type" : "fieldAccess", "fieldName" : "latencyMs_SUM" },
{ "type" : "fieldAccess", "name" : "rows", "fieldName" : "rows" }
]
}]
is that right?
why do I use aggregations?
If I don't make aggregations,can I also "select
avg(latencyMs),min(latencyMs),sum(latencyMs) from mytable"
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