97 lines
2.1 KiB
Markdown
97 lines
2.1 KiB
Markdown
---
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title: array.from() function
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description: >
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`array.from()` constructs a table from an array of records.
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menu:
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flux_v0_ref:
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name: array.from
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parent: array
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identifier: array/from
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weight: 101
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flux/v0/tags: [inputs]
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---
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<!------------------------------------------------------------------------------
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IMPORTANT: This page was generated from comments in the Flux source code. Any
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edits made directly to this page will be overwritten the next time the
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documentation is generated.
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To make updates to this documentation, update the function comments above the
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function definition in the Flux source code:
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https://github.com/influxdata/flux/blob/master/stdlib/array/array.flux#L48-L48
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Contributing to Flux: https://github.com/influxdata/flux#contributing
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Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md
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------------------------------------------------------------------------------->
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`array.from()` constructs a table from an array of records.
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Each record in the array is converted into an output row or record. All
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records must have the same keys and data types.
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##### Function type signature
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```js
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(<-rows: [A]) => stream[A] where A: Record
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```
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{{% caption %}}
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For more information, see [Function type signatures](/flux/v0/function-type-signatures/).
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{{% /caption %}}
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## Parameters
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### rows
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Array of records to construct a table with. Default is the piped-forward array (`<-`).
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## Examples
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- [Build an arbitrary table](#build-an-arbitrary-table)
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- [Union custom rows with query results](#union-custom-rows-with-query-results)
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### Build an arbitrary table
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```js
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import "array"
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rows = [{foo: "bar", baz: 21.2}, {foo: "bar", baz: 23.8}]
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array.from(rows: rows)
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```
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{{< expand-wrapper >}}
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{{% expand "View example output" %}}
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#### Output data
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| foo | baz |
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| ---- | ---- |
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| bar | 21.2 |
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| bar | 23.8 |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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### Union custom rows with query results
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```js
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import "influxdata/influxdb/v1"
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import "array"
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tags = v1.tagValues(bucket: "example-bucket", tag: "host")
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wildcard_tag = array.from(rows: [{_value: "*"}])
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union(tables: [tags, wildcard_tag])
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```
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