schema.measurementFieldKeys() function
The schema.measurementFieldKeys()
function returns a list of fields in a measurement. The return value is always a single table with a single column, _value
.
import "influxdata/influxdb/schema"
schema.measurementFieldKeys(
bucket: "example-bucket",
measurement: "example-measurement",
start: -30d
)
Parameters
bucket
Bucket to retrieve field keys from.
*Data type: String*
measurement
Measurement to list field keys from.
*Data type: String*
start
Oldest time to include in results. Defaults to -30d
.
Relative start times are defined using negative durations. Negative durations are relative to now. Absolute start times are defined using time values.
*Data type: Duration*
Examples
import "influxdata/influxdb/schema"
schema.measurementFieldKeys(
bucket: "telegraf",
measurement: "cpu",
)
Function definition
package schema
measurementFieldKeys = (bucket, measurement, start=-30d) =>
fieldKeys(bucket: bucket, predicate: (r) => r._measurement == measurement, start: start)
*Used functions: schema.fieldKeys*