javascript: Constructs a JavaScript aggregator for the given Druid columns
Description
Constructs a JavaScript aggregator for the given Druid columns
Usage
javascript(fieldNames, fnAggregate, fnCombine, fnReset, name = "javascript")
Arguments
fieldNames
list of Druid columns fnAggregate depends on
fnCombine
JavaScript function combining aggregate values
fnReset
JavaScript function returning the initial aggregate value
fnAggregte
JavaScript function updating the current aggregate value