promql.changes() function

promql.changes() implements functionality equivalent to PromQL’s changes() function.

Important: The internal/promql package is not meant for external use.

Function type signature

(<-tables: stream[{A with _value: float}]) => stream[{B with _value: float}]

Parameters

tables

Input data. Default is piped-forward data (<-).

Examples

Return the number of times that values in a series change

import "internal/promql"
import "sampledata"

sampledata.float()
    |> promql.changes()