docs-v2/content/flux/v0/stdlib/influxdata/influxdb/schema/measurementfieldkeys.md

title	description	menu	weight	flux/v0/tags
schema.measurementFieldKeys() function	`schema.measurementFieldKeys()` returns a list of fields in a measurement.	flux_v0_ref name parent identifier schema.measurementFieldKeys influxdata/influxdb/schema influxdata/influxdb/schema/measurementFieldKeys	301	metadata

schema.measurementFieldKeys() returns a list of fields in a measurement.

Results include a single table with a single column, _value.

Function type signature

(bucket: string, measurement: A, ?start: B, ?stop: C) => stream[D] where A: Equatable, D: Record

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

Parameters

bucket

({{< req >}}) Bucket to retrieve field keys from.

measurement

({{< req >}}) Measurement to list field keys from.

start

Oldest time to include in results. Default is -30d.

stop

Newest time include in results. The stop time is exclusive, meaning values with a time equal to stop time are excluded from the results. Default is now().

Relative start times are defined using negative durations. Negative durations are relative to now(). Absolute start times are defined using time values.

Examples

Query field keys from an InfluxDB measurement

import "influxdata/influxdb/schema"

schema.measurementFieldKeys(bucket: "example-bucket", measurement: "example-measurement")