highestMax() function

highestMax() selects the record with the highest value in the specified column from each input table and returns the highest n records.

Note: highestMax() drops empty tables.

Function type signature

(<-tables: stream[A], n: int, ?column: string, ?groupColumns: [string]) => stream[A] where A: Record

Parameters

n

(Required) Number of records to return.

column

Column to evaluate. Default is _value.

groupColumns

List of columns to group by. Default is [].

tables

Input data. Default is piped-forward data (<-).

Examples

Return the highest two values from a stream of tables

import "sampledata"

sampledata.int()
    |> highestMax(n: 2, groupColumns: ["tag"])