96 lines
2.6 KiB
Markdown
96 lines
2.6 KiB
Markdown
---
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title: experimental.set() function
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description: >
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`experimental.set()` sets multiple static column values on all records.
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menu:
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flux_v0_ref:
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name: experimental.set
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parent: experimental
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identifier: experimental/set
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weight: 101
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flux/v0/tags: [transformations]
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introduced: 0.40.0
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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/experimental/experimental.flux#L248-L248
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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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`experimental.set()` sets multiple static column values on all records.
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If a column already exists, the function updates the existing value.
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If a column does not exist, the function adds it with the specified value.
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##### Function type signature
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```js
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(<-tables: stream[B], o: A) => stream[C] where A: Record, B: Record, C: 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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### o
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({{< req >}})
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Record that defines the columns and values to set.
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The key of each key-value pair defines the column name.
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The value of each key-value pair defines the column value.
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### tables
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Input data. Default is piped-forward data (`<-`).
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## Examples
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### Set values for multiple columns
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```js
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import "experimental"
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data
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|> experimental.set(o: {_field: "temperature", unit: "°F", location: "San Francisco"})
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```
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{{< expand-wrapper >}}
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{{% expand "View example input and output" %}}
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#### Input data
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| _time | _field | _value |
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| -------------------- | ------- | ------- |
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| 2019-09-16T12:00:00Z | temp | 71.2 |
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| 2019-09-17T12:00:00Z | temp | 68.4 |
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| 2019-09-18T12:00:00Z | temp | 70.8 |
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#### Output data
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| _time | _field | _value | unit | location |
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| -------------------- | ----------- | ------- | ----- | ------------- |
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| 2019-09-16T12:00:00Z | temperature | 71.2 | °F | San Francisco |
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| 2019-09-17T12:00:00Z | temperature | 68.4 | °F | San Francisco |
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| 2019-09-18T12:00:00Z | temperature | 70.8 | °F | San Francisco |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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