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array.from() function

content/flux/v0/stdlib/array/from.md

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<!------------------------------------------------------------------------------ IMPORTANT: This page was generated from comments in the Flux source code. Any edits made directly to this page will be overwritten the next time the documentation is generated. To make updates to this documentation, update the function comments above the function definition in the Flux source code: https://github.com/influxdata/flux/blob/master/stdlib/array/array.flux#L48-L48 Contributing to Flux: https://github.com/influxdata/flux#contributing Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md ------------------------------------------------------------------------------->

array.from() constructs a table from an array of records.

Each record in the array is converted into an output row or record. All records must have the same keys and data types.

Function type signature
js
(<-rows: [A]) => stream[A] where A: Record

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

Parameters

rows

Array of records to construct a table with. Default is the piped-forward array (<-).

Examples

Build an arbitrary table

js
import "array"

rows = [{foo: "bar", baz: 21.2}, {foo: "bar", baz: 23.8}]

array.from(rows: rows)

{{< expand-wrapper >}} {{% expand "View example output" %}}

Output data

foobaz
bar21.2
bar23.8

{{% /expand %}} {{< /expand-wrapper >}}

Union custom rows with query results

js
import "influxdata/influxdb/v1"
import "array"

tags = v1.tagValues(bucket: "example-bucket", tag: "host")

wildcard_tag = array.from(rows: [{_value: "*"}])

union(tables: [tags, wildcard_tag])