set() function

set() assigns a static column value to each row in the input tables.

set() may modify an existing column or add a new column. If the modified column is part of the group key, output tables are regrouped as needed. set() can only set string values.

Function type signature

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

Parameters

key

(Required) Label of the column to modify or set.

value

(Required) String value to set.

tables

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

Examples

Set a column to a specific string value

import "sampledata"

sampledata.int()
    |> set(key: "host", value: "prod1")