first() function

first() returns the first non-null record from each input table.

Note: first() drops empty tables.

Function type signature

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

Parameters

column

Column to operate on. Default is _value.

tables

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

Examples

Return the first row in each input table

import "sampledata"

sampledata.int()
    |> first()