Warning! This page documents an earlier version of Flux, which is no longer actively developed. Flux v0.36 is the most recent stable version of Flux.
first() function selects the first non-null record from an input table.
Function type: Selector
Output data type: Object
from(bucket:"telegraf/autogen") |> range(start:-1h) |> filter(fn: (r) => r._measurement == "cpu" and r._field == "usage_system" ) |> first()