table.fill() function

table.fill() adds a single row to empty tables in a stream of tables.

Columns that are in the group key are filled with the column value defined in the group key. Columns not in the group key are filled with a null value.

Function type signature

(<-tables: stream[A]) => stream[A] where A: Record

Parameters

tables

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

Examples

Fill empty tables

import "experimental/table"
import "sampledata"

data =
    sampledata.int()
        |> filter(fn: (r) => r.tag != "t2", onEmpty: "keep")

data
    |> table.fill()