docs-v2/content/flux/v0.x/stdlib/experimental/table/fill.md

title	description	menu	weight	flux/v0.x/tags
table.fill() function	`table.fill()` adds a single row to empty tables in a stream of tables.	flux_0_x_ref name parent identifier table.fill experimental/table experimental/table/fill	201	transformations table

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

{{% caption %}}For more information, see Function type signatures.{{% /caption %}}

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()

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Input data

_time	_value	*tag
2021-01-01T00:00:00Z	-2	t1
2021-01-01T00:00:10Z	10	t1
2021-01-01T00:00:20Z	7	t1
2021-01-01T00:00:30Z	17	t1
2021-01-01T00:00:40Z	15	t1
2021-01-01T00:00:50Z	4	t1

_time	_value	*tag

Output data

_time	_value	*tag
2021-01-01T00:00:00Z	-2	t1
2021-01-01T00:00:10Z	10	t1
2021-01-01T00:00:20Z	7	t1
2021-01-01T00:00:30Z	17	t1
2021-01-01T00:00:40Z	15	t1
2021-01-01T00:00:50Z	4	t1

_time	_value	*tag
		t2

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