docs-v2/content/v2.0/reference/flux/stdlib/strings/trimprefix.md

title	description	aliases	menu	weight	related
strings.trimPrefix() function	The `strings.trimPrefix()` function removes a prefix from a string. Strings that do not start with the prefix are returned unchanged.	/v2.0/reference/flux/functions/strings/trimprefix/	v2_0_ref name parent strings.trimPrefix Strings	301	/v2.0/reference/flux/stdlib/strings/trim /v2.0/reference/flux/stdlib/strings/trimleft /v2.0/reference/flux/stdlib/strings/trimright /v2.0/reference/flux/stdlib/strings/trimsuffix /v2.0/reference/flux/stdlib/strings/trimspace

The strings.trimPrefix() function removes a prefix from a string. Strings that do not start with the prefix are returned unchanged.

Output data type: String

import "strings"

strings.trimPrefix(v: "123_abc", prefix: "123")

// returns "_abc"

Parameters

v

The string value to trim.

Data type: String

prefix

The prefix to remove.

Data type: String

Examples

Remove a prefix from all values in a column

import "strings"

data
  |> map(fn: (r) => ({
      r with
      sensorID: strings.trimPrefix(v: r.sensorId, prefix: "s12_")
    })
  )