Flux Contents

bottom() function

Warning! This page documents an earlier version of Flux, which is no longer actively developed. Flux v0.24 is the most recent stable version of Flux.

The bottom() function sorts a table by columns and keeps only the bottom n records.

Function type: Selector
Output data type: Object

bottom(n:10, columns: ["_value"])

Parameters

n

Number of records to return.

Data type: Integer

columns

List of columns by which to sort. Sort precedence is determined by list order (left to right). Default is ["_value"].

Data type: Array of strings

Examples

from(bucket:"telegraf/autogen")
  |> range(start:-1h)
  |> filter(fn: (r) =>
    r._measurement == "mem" AND
    r._field == "used_percent"
  )
  |> bottom(n:10)

Function definition

// _sortLimit is a helper function, which sorts and limits a table.
_sortLimit = (n, desc, columns=["_value"], tables=<-) =>
  tables
    |> sort(columns:columns, desc:desc)
    |> limit(n:n)

bottom = (n, columns=["_value"], tables=<-) =>
  _sortLimit(n:n, columns:columns, desc:false)

BOTTOM()

Revert to Default